all3_n
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Hello. For some time now, I have been searching for a new set of memory for my PC. I have a nFoce 680i SLI (122-CK-NF68) and would like to upgrade my memory to 4GB, prefering a 2x2GB setup. First of all, is that possible? Because i read in the user's manual the following: "Your new motherboard has four 1.8V 240-pin slots for DDR2 memory. These slots support 256Mb, 512Mb and 1Gb DDR2 technologiesfor x8 and x16 devices." Did I got it wrong? Or does it say that 1 slot can only have a dimm that is up to 1Gb?? But then it wouldn't be possible to install 8Gb. I also found the Motherboard support page here ( http://www.evga.com/support/motherboard/) and I didn't understand the distinction between SLI Ready Memories and Standard Memory. Can I operate a certain model as an SLI ready memory kit and exceed the clocking from 800MHz?
Now concerning the clocking, would you recommend to stick to 800MHz? Is it ideal to purchase a kit with 2x2Gb operating @ 800 rather than 1066MHz?
I would very much appreciated if anyone could advise me on specific memory kits. Here are some that I consider buying: OCZ OCZ2RPR10664GK 4GB (2X2GB) PC-8500 1066MHZ REAPER HPC EDITION DUAL CHANNEL KIT http://www.e-shop.gr/show_per.phtml?id=PER.555268 KINGSTON KHX8500D2T1K2/4G 4GB (2X2GB) PC8500 1066MHZ HYPERX T1 DUAL CHANNEL KIT
http://www.e-shop.gr/show_per.phtml?id=PER.553921 OCZ OCZ2N800SR4GK DDR2 4GB (2X2GB) PC2-6400 SLI-READY EDITION DUAL CHANNEL KIT
http://www.e-shop.gr/show_per.phtml?id=PER.555251 CORSAIR TWIN2X4096-6400C5DHX DDR2 4GB (2X2GB) PC2-6400 CL5 KIT
http://www.e-shop.gr/show_per.phtml?id=PER.554028 OCZ OCZ2T800C44GK 4GB (2X2GB) PC2-6400 800MHZ TITANIUM EDITION DUAL CHANNEL KIT http://www.e-shop.gr/show_per.phtml?id=PER.555314 Bear in mind please, that soon I may want to buy another 4Gb because I consider changing to Windows 7 (from Windows XP).
Thank you in advance!
E-VGA nForce 680i SLI Intel Core 2 Duo 6700 Extreme Edition @ 2,67GHz OCZ Reaper 4GB @ 1066MHz ASUS NVIDIA EN8800 GTS 768MB GDDR3 ASUS VENTO 3600 WD Caviar 320GB & Excelstor 80GB LG DVD-ROM Pioneer DVD-RW Eizo FlexScan S1911SH
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flyinion
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Re:Search for the right memory for 680i SLI
2010/01/19 16:53:13
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I've been using this one http://www.newegg.com/Product/Product.aspx?Item=N82E16820231209 for over a year now with Vista 64bit and it's working great. I have it set to sync with the cpu which is mildly overclocked by just setting the FSB to 1333, so basically RAM speed is 666 instead of 800. I found out about doing that (syncing to CPU speed) by reading some overclocking tips in one of the forums around here. I did a number of tests because I was skeptical about the lower speed but with the overclock it was actually an improvement to not run at 800.
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all3_n
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Re:Search for the right memory for 680i SLI
2010/01/20 06:41:46
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flyinion
I've been using this one http://www.newegg.com/Product/Product.aspx?Item=N82E16820231209 for over a year now with Vista 64bit and it's working great. I have it set to sync with the cpu which is mildly overclocked by just setting the FSB to 1333, so basically RAM speed is 666 instead of 800. I found out about doing that (syncing to CPU speed) by reading some overclocking tips in one of the forums around here. I did a number of tests because I was skeptical about the lower speed but with the overclock it was actually an improvement to not run at 800.
Thanks for the infos, this will certainly be helpful... after I purschased my kit  I checked yours but couldn't find it in a good price in Greece. Could you choose one of the proposed ones? You still think I should reject the idea of buying a 1066 kit? Thank you for your response!!
E-VGA nForce 680i SLI Intel Core 2 Duo 6700 Extreme Edition @ 2,67GHz OCZ Reaper 4GB @ 1066MHz ASUS NVIDIA EN8800 GTS 768MB GDDR3 ASUS VENTO 3600 WD Caviar 320GB & Excelstor 80GB LG DVD-ROM Pioneer DVD-RW Eizo FlexScan S1911SH
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nathan48075
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Re:Search for the right memory for 680i SLI
2010/01/20 07:00:15
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either of those will be just fine. you don't need the sli ready memory even if you run 2 video cards in sli. posting your computer specs in your sig will help us to help you. what are you using your computer for? are you doing any overclocking? when you upgrade to win7 be sure to use a 64 bit version as 32 bit doesn't really address above 3.5 gig or so of ram. welcome to the forum.
Case- Coolermaster HAF Mobo- 680i-A1 P33 Proc- E8400 @4.05 (450x9) Cooler-Zalman 9700 Mem- Corsair 2x2 6400 C4DHX 4,4,4,12 @2.1 GPU- EVGA GTX 280 PSU- Corsair HX-1000 HDD- W.D. Caviar 320x2 = Raid 0 ODD- Samsung SH-S223 Sound- Audigy2 ZS OS- Vista 64 Home Premium Monitor- VX1962 wm Speakers- Logitech Z-5500 Headphones-Altec Lansing AHS615
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all3_n
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Re:Search for the right memory for 680i SLI
2010/01/20 07:21:42
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nathan48075
either of those will be just fine. you don't need the sli ready memory even if you run 2 video cards in sli. posting your computer specs in your sig will help us to help you. what are you using your computer for? are you doing any overclocking? when you upgrade to win7 be sure to use a 64 bit version as 32 bit doesn't really address above 3.5 gig or so of ram. welcome to the forum.
Nice joining you!! Yes you are right, of course I will upgrade to the 64-bit version. I use my computer firstly for my studies (Computer Engineer) and also for gaming. I avoided overclocking for a while, although if someone experienced guided me specifically for my hardware, I would very much like to enter the fascinating world of OC!! So, do you think that I will be able to use @ 1066MHz my ram kit if I purchase let's say KINGSTON KHX8500D2T1K2/4G 4GB (2X2GB) PC8500 1066MHZ HYPERX T1 DUAL CHANNEL KIT or OCZ OCZ2RPR10664GK 4GB (2X2GB) PC-8500 1066MHZ REAPER HPC EDITION DUAL CHANNEL KIT?? And by the way, which of those two you would recommend me most? I know that kingston has a tradition in the memory section but I also heard some praising words for OCZ's.  Thanks for your precious help!
E-VGA nForce 680i SLI Intel Core 2 Duo 6700 Extreme Edition @ 2,67GHz OCZ Reaper 4GB @ 1066MHz ASUS NVIDIA EN8800 GTS 768MB GDDR3 ASUS VENTO 3600 WD Caviar 320GB & Excelstor 80GB LG DVD-ROM Pioneer DVD-RW Eizo FlexScan S1911SH
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nathan48075
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Re:Search for the right memory for 680i SLI
2010/01/20 08:26:44
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i have not used either one but the ocz uses 2.1v while the kingston needs 2.2v. i have read that the 680i memory controller does not operate as stable @ higher volts due to the high northbridge temps.
Case- Coolermaster HAF Mobo- 680i-A1 P33 Proc- E8400 @4.05 (450x9) Cooler-Zalman 9700 Mem- Corsair 2x2 6400 C4DHX 4,4,4,12 @2.1 GPU- EVGA GTX 280 PSU- Corsair HX-1000 HDD- W.D. Caviar 320x2 = Raid 0 ODD- Samsung SH-S223 Sound- Audigy2 ZS OS- Vista 64 Home Premium Monitor- VX1962 wm Speakers- Logitech Z-5500 Headphones-Altec Lansing AHS615
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all3_n
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Re:Search for the right memory for 680i SLI
2010/01/20 09:09:15
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nathan48075
i have not used either one but the ocz uses 2.1v while the kingston needs 2.2v. i have read that the 680i memory controller does not operate as stable @ higher volts due to the high northbridge temps.
So you lean towards the OCZ. What about the clocking? Will it work @ 1066? Do I need to change something in the bios to work @ 1066?
E-VGA nForce 680i SLI Intel Core 2 Duo 6700 Extreme Edition @ 2,67GHz OCZ Reaper 4GB @ 1066MHz ASUS NVIDIA EN8800 GTS 768MB GDDR3 ASUS VENTO 3600 WD Caviar 320GB & Excelstor 80GB LG DVD-ROM Pioneer DVD-RW Eizo FlexScan S1911SH
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Richard99
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Re:Search for the right memory for 680i SLI
2010/01/20 09:19:49
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☄ Helpful
As Nathan says you should avoid high voltages if you want your RAM and MB to have a long life.
All of the standard 800MHz RAM works perfectly at 1.8 or 1.9 volts.
RAM rated at 1066MHz or more is only 800MHz RAM being overclocked, and it usually needs higher voltage to run at the higher speed. That's when the problems start.
The difference in actual PC performance between running RAM at 800 MHz and 1066 MHz is negligible. You need careful tests to measure it.
Very few people actually need more than 4GB - there are not many applications that can and do use it.
Current settings: MB: 680i CPU: QX6700 @3200MHz RAM: 8GB OCZ @1066MHz @ 2.0v OS: Win7 64bit
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all3_n
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Re:Search for the right memory for 680i SLI
2010/01/20 13:40:35
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Richard99
As Nathan says you should avoid high voltages if you want your RAM and MB to have a long life.
All of the standard 800MHz RAM works perfectly at 1.8 or 1.9 volts.
RAM rated at 1066MHz or more is only 800MHz RAM being overclocked, and it usually needs higher voltage to run at the higher speed. That's when the problems start.
The difference in actual PC performance between running RAM at 800 MHz and 1066 MHz is negligible. You need careful tests to measure it.
Very few people actually need more than 4GB - there are not many applications that can and do use it.
Thank you for your response!! It's funny though that despite consulting me to purchase a kit working @ 800 MHz, each of you has RAM working @ 1066MHz  Well, what I really want to know if a kit working @ 1066 is recognisable by my motherboard. Surely I understand the factor of the voltage and its connection to the lifetime of the memory but all the kits I am looking at the moment have Lifetime warranty. So it would be no problem replacing them (if anything happens). Another question that came up, the timings are better as they get smaller, right? For example 4-4-4-12 is better than 5-5-5-18?? And how is this possible if the 4-4-4-12 is produced by a kit @ 800MHz and 5-5-5-18 by a kit @ 1066. After all, it isn't about the timings?
E-VGA nForce 680i SLI Intel Core 2 Duo 6700 Extreme Edition @ 2,67GHz OCZ Reaper 4GB @ 1066MHz ASUS NVIDIA EN8800 GTS 768MB GDDR3 ASUS VENTO 3600 WD Caviar 320GB & Excelstor 80GB LG DVD-ROM Pioneer DVD-RW Eizo FlexScan S1911SH
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Richard99
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Re:Search for the right memory for 680i SLI
2010/01/20 14:57:39
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You make some pretty good points there, worth replying to. Obviously I can only speak for myself.
I'm not saying that you must get 800MHz RAM, only that you should consider that anything more is a bonus and not to be relied upon.
If you take an hour or two to read back through this forum, you will find it is full of posts from people who (a) have failed to get 1066 or faster memory to work reliably, or (b) are asking for help because their fast system has suddenly stopped booting and is giving memory fail messages. It's a very common theme.
I have been able to get 8GB of OCZ RAM running at 1066, and on "only" 2.0v, but I believe this is as much luck in the selection of parts as to any skill in setting them up.
I use the full 8GB because I develop and run some special-purpose engineering software that crunches very large amounts of data. I run the RAM at 1066 because I found that it works, but if it didn't I would run it at 800 and not be very disappointed. As I said, the difference in overall PC performance is tiny - you get a far bigger improvement by overclocking the CPU.
By all means get yourself "1066MHz" RAM (the OCZ is as good as any) - but do not be too upset if you have to run it at only 800MHz to avoid using excessive voltages that may sooner or later kill it and/or other components on the MB.
On the timings, yes smaller is better. As you increase the clock speed, the tight timings no longer work and you have to relax them in order to boot correctly and avoid crashes in use. That of course reduces or even cancels the benefit of the higher speed.
Hope that helps.
Current settings: MB: 680i CPU: QX6700 @3200MHz RAM: 8GB OCZ @1066MHz @ 2.0v OS: Win7 64bit
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nathan48075
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Re:Search for the right memory for 680i SLI
2010/01/20 16:37:27
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☄ Helpful
maybe i can explain simply a little about ram speeds. mhz refers to how fast the memory gets info to the processor while the timings are how fast the memory processes info within the memory itself.
my memory is rated at 800mhz 4,4,4,12 but i'm running it at 5,5,5,15 850mhz linked and synched. my fsb is set at 425mhz. ddr2 runs at double the bus speed so my memory is running at 850. my multiplier on the e8400 processor is 9. 425 x 9 = 3825mhz which is what im running my processor at currently.
obviously i need to update my sig. like alot of people here my settings change with the weather. my room is too small for all af the heat in the summer so i downclock some in the summer and oc more in the winter.
Case- Coolermaster HAF Mobo- 680i-A1 P33 Proc- E8400 @4.05 (450x9) Cooler-Zalman 9700 Mem- Corsair 2x2 6400 C4DHX 4,4,4,12 @2.1 GPU- EVGA GTX 280 PSU- Corsair HX-1000 HDD- W.D. Caviar 320x2 = Raid 0 ODD- Samsung SH-S223 Sound- Audigy2 ZS OS- Vista 64 Home Premium Monitor- VX1962 wm Speakers- Logitech Z-5500 Headphones-Altec Lansing AHS615
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all3_n
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Re:Search for the right memory for 680i SLI
2010/01/20 18:35:47
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So Nathan if I get this right, the more the clocking rises, the slowest the times gets, right? So to "balance" in some way both efficiency and reliability. So after all these very helpful answers, would you suggest me to go for a 800MHz kit with better timings and if possible lower voltage or a 1066MHz with more "relaxed" timings and about the same voltage?
for example: a) Mushkin 4GB @ 800MHz, 4-4-4-12, 1,8V or
b) Mushkin 4GB @ 1066MHz, 5-5-5-15, 2,1V.
p.s. If both 800MHz & 1066MHz kits work at the same voltage what's the choice? You help a lot sorting this out. And I have to tell you that this is good for my studies! 
E-VGA nForce 680i SLI Intel Core 2 Duo 6700 Extreme Edition @ 2,67GHz OCZ Reaper 4GB @ 1066MHz ASUS NVIDIA EN8800 GTS 768MB GDDR3 ASUS VENTO 3600 WD Caviar 320GB & Excelstor 80GB LG DVD-ROM Pioneer DVD-RW Eizo FlexScan S1911SH
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nathan48075
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Re:Search for the right memory for 680i SLI
2010/01/20 19:23:12
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that is a tough call because memory speeds are alot like processors, motherboards and videocards. no 2 of them, even from the same batch can be guaranteed to clock the same. any one answer is never always correct. if it were mine i would go for the tight timings at low volts, especially for the 680i mobo.
Case- Coolermaster HAF Mobo- 680i-A1 P33 Proc- E8400 @4.05 (450x9) Cooler-Zalman 9700 Mem- Corsair 2x2 6400 C4DHX 4,4,4,12 @2.1 GPU- EVGA GTX 280 PSU- Corsair HX-1000 HDD- W.D. Caviar 320x2 = Raid 0 ODD- Samsung SH-S223 Sound- Audigy2 ZS OS- Vista 64 Home Premium Monitor- VX1962 wm Speakers- Logitech Z-5500 Headphones-Altec Lansing AHS615
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all3_n
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Re:Search for the right memory for 680i SLI
2010/01/21 02:27:23
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Well, I think at last I came to a double-choice decision: CORSAIR TWIN2X4096-8500C5D 4GB (2X2GB) DOMINATOR DHX DDR2 PC2-8500 (1066MHZ) DUAL CHANNEL KIT
(5-5-5-15 timings)
OCZ OCZ2RPR10664GK 4GB (2X2GB) PC-8500 1066MHZ REAPER HPC EDITION DUAL CHANNEL KIT
(5-5-5-18 timings)
Both work @ 2,1V. The only real difference is the last timing. And the prices: Corsair 130.50Euros and OCZ 109.00Euros.
Does it worth to spend 20Euros for the corsair? Is it a better brand than the OCZ?
Just pick one to suggest me. It won't be your fault if anything happens!! 
post edited by all3_n - 2010/01/21 02:34:11
E-VGA nForce 680i SLI Intel Core 2 Duo 6700 Extreme Edition @ 2,67GHz OCZ Reaper 4GB @ 1066MHz ASUS NVIDIA EN8800 GTS 768MB GDDR3 ASUS VENTO 3600 WD Caviar 320GB & Excelstor 80GB LG DVD-ROM Pioneer DVD-RW Eizo FlexScan S1911SH
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Richard99
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Re:Search for the right memory for 680i SLI
2010/01/21 02:51:12
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The difference in price has little to do with quality. It has more to do with the production quantities, size of bulk purchases, and how keen the seller is to clear his shelf before new stock comes in. The wholesale price of RAM is more volatile than almost any other PC components.
The actual RAM chips are all made to the same JEDEC spec which is for 800MHz operation at 1.85 volts. Companies like Corsair buy in the chips and package them. Some will be sold as 800MHz and some as 1066 or 1150MHz. There were some sold as 1200MHz at one time, but I haven't seen that for a while - perhaps too many burned out. It is up to that company to say what timing and voltage should be used to make the over-clocked RAM run reliably.
You can choose to run the RAM at any timings you choose - it's a simple matter to set in the BIOS. If your timings don't work you simply reboot and try new settings in BIOS. The same with voltage - except that if you overdo the voltage you can kill the RAM and/or memory driver chip on the MB. How much you overvolt the RAM is down to how brave you are. 2.0 seems to be safe, 2.1 is about on the edge, and 2.2 is really asking for trouble.
Current settings: MB: 680i CPU: QX6700 @3200MHz RAM: 8GB OCZ @1066MHz @ 2.0v OS: Win7 64bit
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all3_n
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Re:Search for the right memory for 680i SLI
2010/01/21 03:33:37
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And the timings? Does it worth the money the difference in the timings? So let me get this straight: Timings and clocking is like acceleration in a car: the product specifications is a certain amount of time (let's say 8secs) @ a certain point in the rev's (e.g. 6000rpm). So, it isn't always that fast, especially in real life, but even the fact that it CAN actually work at those levels makes it easier to work at a lower level.
All in all, I won't be disappointed if I bought a 1066 kit and have to operate at 800. Besides, even the 1066 to 800 have very similar prices. And I think any of those two would be about the same. Dear friends, don't hesitate to propose one! I won't blame you, really.
E-VGA nForce 680i SLI Intel Core 2 Duo 6700 Extreme Edition @ 2,67GHz OCZ Reaper 4GB @ 1066MHz ASUS NVIDIA EN8800 GTS 768MB GDDR3 ASUS VENTO 3600 WD Caviar 320GB & Excelstor 80GB LG DVD-ROM Pioneer DVD-RW Eizo FlexScan S1911SH
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Richard99
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Re:Search for the right memory for 680i SLI
2010/01/21 03:50:28
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The timings are yours, not Corsairs or OCZ. You can set both makes to both sets of timings. You cannot be sure until you fit them what timings are going to be best in your PC and with your CPU. When I made my choice I looked at two things 1. the price 2. the package - to see which had the best heat sinks. At that time the prices were about the same. The OCZ package had a heat pipe with a separate heat radiator on top. The other makes just had a flat plate on top of the chips. I thought the OCZ would run cooler. (The packages may have changed since then) Your prices show the OCZ much cheaper, so I would be very tempted to choose them to save 20 euros. Do let us know what you choose and how they work!
post edited by Richard99 - 2010/01/21 03:52:55
Current settings: MB: 680i CPU: QX6700 @3200MHz RAM: 8GB OCZ @1066MHz @ 2.0v OS: Win7 64bit
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all3_n
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Re:Search for the right memory for 680i SLI
2010/01/21 10:53:53
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Richard99
The timings are yours, not Corsairs or OCZ.
Yes, that's right Richard, but in my mind, if the company proposes certain timings, this kit has what it takes to work @ those times easier, isn't that right? What I want to say is that because OCZ says that their kit works @ 5-5-5-18 it will be more difficult to keep up @ 5-5-5-15 than the corsair which is set at that timings from the factory. Richard99
You can set both makes to both sets of timings. You cannot be sure until you fit them what timings are going to be best in your PC and with your CPU.
When I made my choice I looked at two things
1. the price
2. the package - to see which had the best heat sinks.
At that time the prices were about the same. The OCZ package had a heat pipe with a separate heat radiator on top. The other makes just had a flat plate on top of the chips. I thought the OCZ would run cooler.
(The packages may have changed since then)
If you take a look, I think even now, the OCZ kit I intend to buy has this heat pipe just like yours, and is certainly something that I have taken under consideration. You see, I 've been working on a project since last year for my studies (Electrical & Computer Engineering) about heat conduction in thermal placement for cmos, so I'm quite interested in heat distribution!! All this discussion I have to admit that has been very enlightening. Thank you all for your support!! And of course you will be the first tou know my choice when I make it!!
E-VGA nForce 680i SLI Intel Core 2 Duo 6700 Extreme Edition @ 2,67GHz OCZ Reaper 4GB @ 1066MHz ASUS NVIDIA EN8800 GTS 768MB GDDR3 ASUS VENTO 3600 WD Caviar 320GB & Excelstor 80GB LG DVD-ROM Pioneer DVD-RW Eizo FlexScan S1911SH
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Richard99
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Re:Search for the right memory for 680i SLI
2010/01/21 14:57:14
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all3_n
What I want to say is that because OCZ says that their kit works @ 5-5-5-18 it will be more difficult to keep up @ 5-5-5-15 than the corsair which is set at that timings from the factory.
No. I disagree. The chips inside are the same and they are not "set at that timing" in the factory. They are set only in your computer. Compare it with your car. You can choose the gear (RAM timing) and the engine rpm (clock MHz). The manufacturer will recommend what gear to use and what rpm is safest, but you will decide for yourself. Another driver will choose to change gear at a different rpm, in the same car. 5-5-5-18 is a very, very little slower than 5-5-5-15, but that doesn't mean that the OCZ is made any slower than the Corsair. They have the same specification chips inside, perhaps from the same factory. OCZ are just being a little more cautious in their specification than Corsair. If you click on the "Mods Rigs" under my name <<<<< here and look at the bottom line, you will see that my OCZ 1066MHz is running at ... 5-5-5-15 !!
Current settings: MB: 680i CPU: QX6700 @3200MHz RAM: 8GB OCZ @1066MHz @ 2.0v OS: Win7 64bit
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all3_n
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Re:Search for the right memory for 680i SLI
2010/01/21 16:20:10
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Well Richard I think you got me convinced on this. The comparison to the car was great actually! I will think it through and decide, although I feel even closer to the OCZ than in the beginning.
Thank you once again everybody!
E-VGA nForce 680i SLI Intel Core 2 Duo 6700 Extreme Edition @ 2,67GHz OCZ Reaper 4GB @ 1066MHz ASUS NVIDIA EN8800 GTS 768MB GDDR3 ASUS VENTO 3600 WD Caviar 320GB & Excelstor 80GB LG DVD-ROM Pioneer DVD-RW Eizo FlexScan S1911SH
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Richard99
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Re:Search for the right memory for 680i SLI
2010/01/22 03:48:33
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Current settings: MB: 680i CPU: QX6700 @3200MHz RAM: 8GB OCZ @1066MHz @ 2.0v OS: Win7 64bit
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all3_n
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Re:Search for the right memory for 680i SLI
2010/01/26 19:16:28
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Well my friends I bought and already installed the OCZ OCZ2RPR10664GK 4GB and managed tou set them at 1066MHz. The timings though are CAS-TRCD-TRP-TRAS: 5-7-7-20 and the voltage only at 1,9V. What do you suggest me to do in order to take them down to 5-5-5-18 let's say? A change at the timings, will automatically change the voltage or should I do it myself?
E-VGA nForce 680i SLI Intel Core 2 Duo 6700 Extreme Edition @ 2,67GHz OCZ Reaper 4GB @ 1066MHz ASUS NVIDIA EN8800 GTS 768MB GDDR3 ASUS VENTO 3600 WD Caviar 320GB & Excelstor 80GB LG DVD-ROM Pioneer DVD-RW Eizo FlexScan S1911SH
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Richard99
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Re:Search for the right memory for 680i SLI
2010/01/27 04:03:41
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It's interesting that all the manufacturers are being more conservative with their ratings recently. I suspect they have had too many returns of burned up RAM.
If you haven't already done so, you need to turn off SLi RAM and set to Expert settings.
If it was me, I would first turn the voltage to 2.0 which is the max safe voltage.
Then reduce the timings in stages, one setting at a time, e.g.
5-7-7-20
5-7-7-18
5-5-7-18
5-5-5-18
If you have gone too far the PC will fail to boot OR Windows will crash while starting. Then you just go back to the previous setting which will be the best you can have. You cannot do any damage with the timings, only with excess voltage.
If you get it working OK at 5-5-5-18 and it is reliable it would be worth trying back at 1.9v to see if it still works.
Good luck!
Edt to say:
Even if you can get it down to 5-5-5-18 the speed improvement is very small. Don't be too disappointed if you can't get it there because you will have lost very little.
Current settings: MB: 680i CPU: QX6700 @3200MHz RAM: 8GB OCZ @1066MHz @ 2.0v OS: Win7 64bit
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suvuti
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Re:Search for the right memory for 680i SLI
2010/08/28 16:13:21
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I am currently using KINGSTON KHX8500D2T1K2/4G 4GB (2X2GB) PC8500 1066MHZ HYPERX T1 DUAL CHANNEL KIT
the timings are
cas 5
tRCD 5
tRP 5
tRAS 18
tRC 24
CR 2t
and I know that they are supposed to be -5-5-5-15 but what I don't understand is there is no tRC and CR.... do I change them or leave them be?
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Richard99
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Re:Search for the right memory for 680i SLI
2010/08/29 02:51:56
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Those settings are good. Leave them.
Current settings: MB: 680i CPU: QX6700 @3200MHz RAM: 8GB OCZ @1066MHz @ 2.0v OS: Win7 64bit
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mkupchyk
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Re:Search for the right memory for 680i SLI
2010/08/31 09:45:42
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I need to go in and look at my timings, but I am running 8GB (4 x 2GB) of this RAM:
CORSAIR XMS2 240-Pin SDRAM DDR2 800 (PC2 6400)
OS is Vista-64 Ultimate
Oh, and I know that my FSB is unlinked from the CPU and I think I have the RAM at about 810MHz
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