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Max Base Clock Strategy Guide

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statis
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Re:Max Base Clock Strategy Guide 2010/02/01 23:39:07 (permalink)
Actually I got this config stable - 4.0ghz(21x191) ,18x Uncore , 7 7 7 20 for the memory and now I am trying to tighten the timings but with no success
post edited by statis - 2010/02/02 02:26:48


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linuxrouter
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Re:Max Base Clock Strategy Guide 2010/02/02 10:16:18 (permalink)
statis

Actually I got this config stable - 4.0ghz(21x191) ,18x Uncore , 7 7 7 20 for the memory and now I am trying to tighten the timings but with no success



I would first try and run Memtest86+ before trying to load Windows and run LinX. If you get errors in Memtest then you will not pass LinX either and it is safer to use Memtest since memory errors can cause OS issues. If you get errors in Memtest, then you may have to bump up the vDIMM. Also, if you set your Uncore to 16x, then you may be able to lower the VTT.

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statis
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Re:Max Base Clock Strategy Guide 2010/02/02 13:11:56 (permalink)
I am on a totally different route now and hopefully on the right track.. Following your guide my max bclk was 206.. Now I tested 19x multi and Linx passed . Now I will test 20x.. Can you tell me why QPI link(aka Uncore correct me if I am mistaken) shows as if its multiplier is 18x when I set it to 16x.. And If I am at 4.0 Ghz how much should be uncore :)


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linuxrouter
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Re:Max Base Clock Strategy Guide 2010/02/02 13:28:31 (permalink)
statis

I am on a totally different route now and hopefully on the right track.. Following your guide my max bclk was 206.. Now I tested 19x multi and Linx passed . Now I will test 20x.. Can you tell me why QPI link(aka Uncore correct me if I am mistaken) shows as if its multiplier is 18x when I set it to 16x.. And If I am at 4.0 Ghz how much should be uncore :)



The QPI link and Uncore frequencies are separate. When you set 4.8 GT/s in BIOS for QPI frequency, this will set your QPI link multiplier to 18x. However, the Uncore multiplier in general should be 2x the memory frequency. Sometimes people set the Uncore to 2x+1 if there is some kind of stability issue with 2x.

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statis
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Re:Max Base Clock Strategy Guide 2010/02/02 13:48:59 (permalink)
When I set multiplier to 20 I get freezes .. I decided to lower bclk to 201 because I am satisfied with 4.0 Ghz.. I pushed Vcore to 1.4125 and freezes stopped. Now I get linx errors :) What is your precious advice? Imo if I understood right I shouldn't increase Vcore more :)


I am trying 201x20, Uncore x16

post edited by statis - 2010/02/02 13:55:21


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linuxrouter
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Re:Max Base Clock Strategy Guide 2010/02/02 13:57:39 (permalink)
statis

When I set multiplier to 20 I get freezes .. I decided to lower bclk to 201 because I am satisfied with 4.0 Ghz.. I pushed Vcore to 1.4125 and freezes stopped. Now I get linx errors :) What is your precious advice? Imo if I understood right I shouldn't increase Vcore more :)

I am trying 201x20, Uncore x16 Should I set QPI freq to auto? 



Provided the memory is running stable, then the freeze or errors are likely caused by the VCore not being set high enough. For every 100 MHz you add to the core frequency, you will have to add at least .05-.06v to the VCore.


Leave QPI Frequency at 4.8 GT/s.

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statis
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Re:Max Base Clock Strategy Guide 2010/02/02 14:04:17 (permalink)
How much should be safe to push it ? I read on the first page 1.45 should be safe.. 19x206 ran stable at 1.3375v. According to you I should need at least 1.3875v .. The problem is I passed this voltage long ago.. I will try to increase Vcore now and post the results..


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linuxrouter
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Re:Max Base Clock Strategy Guide 2010/02/02 14:11:43 (permalink)
statis

How much should be safe to push it ? I read on the first page 1.45 should be safe.. 19x206 ran stable at 1.3375v. According to you I should need at least 1.3875v .. The problem is I passed this voltage long ago.. I will try to increase Vcore now and post the results..



The maximum VCore will vary from chip-to-chip. I have one processor that handles 1.5v VCore just fine under 24/7 load, but the second one I would not set above 1.4v because the load temps are far too high if I do that. My guess is that one chip draws more current than the other at the same frequency. Also, when overclocking, it is not possible to be 100% safe. There is always the possibility of some kind of failure somewhere.

Make sure to keep an eye on your core temps. You want to keep the temps below 85C.

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statis
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Re:Max Base Clock Strategy Guide 2010/02/02 14:13:36 (permalink)
Yes I know that and use real temp 3.40. There degrees are 70 ...in E-leet are 83 ... That is what concerns me a bit. Although you said use realtemp , look at the difference :)

EDIT: testing now with 1.4375 .. previous voltages gave me error and one black screen (****?!) at run 9 :(
I manage to keep Vreg under 70 degrees :)


Thank you a lot linux I managed to pass here is the screenie http://img651.imageshack.us/img651/1542/testbd.jpg

Now as I set my desired clock ratio I need to tighten timings. I set them to auto.. I think there should be no problems since I am running at 1602 Mhz :) If I get some kind of Linx error what should I tweak ? I am going to sleep now because tomorrow I have exam . Thank you again for answering my million questions  :) 
post edited by statis - 2010/02/02 15:23:16


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Re:Max Base Clock Strategy Guide 2010/02/02 21:19:52 (permalink)
The screenshot looks good. I can't really explain why E-Leet is showing much higher temps. On my system, E-Leet shows around 2-3C cooler than Realtemp 3.0 on average. I normally go by Realtemp though. 

Since you made it through 9-passes, you should be fairly close to stability. If you get an error try 1 notch higher on the VCore. If you run into issues with the memory, double check to make sure the vDIMM is set to 1.65v. Also, to start with I would not tighten the timings below spec. Try spec ratings first or try 8-8-8-24 first followed by the 7-7-7-20 timings.

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statis
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Re:Max Base Clock Strategy Guide 2010/02/03 08:22:40 (permalink)
uhhh I downloaded real temp 3.0 and degrees were 2-3 higher than in E-leet. Did I manage to damage my processor? :( In e-leet temps were 82 max but for a few secs they were 85...Here is a screenie http://img251.imageshack.us/img251/3787/testdw.jpg
I cooled processor with Thermalright ultra 120 extreme+2 Scythe S-flex SS21E .. Now I changed the top fan with Scythe Ultra Kaze 2000 and there was significant temperature difference as you can see :)

Do you think I can stay with this configuration 24/7 or maybe I should buy Corsair h50 hydro and overclock a little more (I think I am getting addicted :D)

I am asking if there will be much difference with my current setup. Noise doesn't matter :) And considering that my chip can't pass 206 bclk is it worth to get corsair h50?
post edited by statis - 2010/02/03 08:39:25


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Re:Max Base Clock Strategy Guide 2010/02/03 13:43:34 (permalink)
Your processor is probably fine unless you are running into any new stability issues. I have spiked into the 90's before without any failures but I try to keep my temps far below that for daily use. Based on your screenshot, I would say your temps look fine. I run the Ultra Kaze 3000-RPM fan via the Thermalright heatsink with a fan controller and that combo works out well. I have not tested the H50 so I can't say whether or not that cooler would be of benefit over the Thermalright.

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statis
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Re:Max Base Clock Strategy Guide 2010/02/04 15:36:45 (permalink)
Thank you a lot for your help I will flash BIOS tomorrow and maybe I will try to increase bclk a bit :) Here is a screen after 1h 40 mins of prime95 blend http://img202.imageshack../img202/8094/test3cl.jpg


EDIT: linux since I respect your opinion I want you to advice me in this matter. Is it worth it to buy Swiftech-h20-220-ultima considering:
1. I move my pc for work (my current setup is not good for this)
2. Can I overclock to say 4,3-4,4 ghz considering that maybe my chip can`t pass 210 bclk.(24/7 stable overclock)

 Here there is no such cooling but a friend is coming from England on Sunday. Maybe he can buy it from there if I am lucky :)
post edited by statis - 2010/02/05 09:07:31


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Re:Max Base Clock Strategy Guide 2010/02/05 19:49:41 (permalink)
Your screenshot looks good. Nice work.

A water cooling setup should help lower your core temps some. I run the IFX-14 Thermalright on one of my systems and it has been an excellent cooler. Load temps are in the upper 60's on average at 4.3 GHz while folding 24/7. This cooler fits on the E758 board. I run a Scythe 38mm fan in the middle. This may be another option to consider. CrazyPC has a lapping option for this heatsink.


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Re:Max Base Clock Strategy Guide 2010/02/05 21:11:18 (permalink)
I think EVGA should just give you your own spot in the forum and call it "LR's Place" once again you have out done yourself.
you have inspired myself and others on this forum. and it has been educational reading all your post. LR you have been a big help to  folding@EVGA  into which I am in your debt. It is a pleasure having you as a part of this community and I am thankful that you have taken the time to enlighten us all.

Thank you!!!  and as uasual Well done!!


 
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Re:Max Base Clock Strategy Guide 2010/02/05 23:54:27 (permalink)
Tasmac

I think EVGA should just give you your own spot in the forum and call it "LR's Place" once again you have out done yourself.
you have inspired myself and others on this forum. and it has been educational reading all your post. LR you have been a big help to  folding@EVGA  into which I am in your debt. It is a pleasure having you as a part of this community and I am thankful that you have taken the time to enlighten us all.

Thank you!!!  and as uasual Well done!!



Tasmac,


Thank you for the kind words. I appreciate it. :)

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statis
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Re:Max Base Clock Strategy Guide 2010/02/06 08:34:22 (permalink)
Linux I have this IFX-14 but it can`t fit on E760.....it either touches the chipset radiator or the ram sticks :) Any ideas?


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linuxrouter
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Re:Max Base Clock Strategy Guide 2010/02/06 16:56:16 (permalink)
statis

Linux I have this IFX-14 but it can`t fit on E760.....it either touches the chipset radiator or the ram sticks :) Any ideas?



The IFX-14 does not fit well on the Classified boards. The only work around that I know of is to trim some fins on the IFX-14 to clear the chipset heatsink.

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Re:Max Base Clock Strategy Guide 2010/04/11 08:25:04 (permalink)
Thank you for this! It seems my max bclk is 212, at 213 even with increased voltages all over it hard locks (occasionally will get a full linx pass but that's not stability) I was hoping for a higher bclk but I guess all chips are different. It is unlikely that it is my 758 board right? I think if it was the board then my upping voltages would have at least stabilized 213. I only tried PCIE @ 101 though I'm a bit scared of what it'll do to GPU or other things if I increase it. Should I bother with increasing PCIE?

When I run 212 bclk it is stable throughout all linx testing even lowering voltages still stable. I really thought this was going to be a 4.5-4.8Ghz W3520 as I was able to do 4.2Ghz @ 1.25v on stock intel cooler (of course I'll be water cooling) Seems the best I'll do is 4.45Ghz.

Question? When Turbo Mode is enabled does it provide the 21X multiplier constantly or only sometimes?
 
EDIT: Tried to increase PCIE to 101, 102, didn't help at all freeze in 1 min of Linx. 213,214 are no go. What's strange is I can even have my VTT @ +75 with 212 and pass 3-4 Linx (10 pass) in a row no problem, I tried +50mv VTT and got the 0x0124 error so added +25mv more and seems rock stable @ 212. All other voltages are stock / lower than stock even, is this some kind of wall for the CPU then? If so, then I guess it is time for me to move on to see if it'll do 212x21 for 4.45Ghz. I have a Quad radiator with Swiftech XT Extreme to do it with. Was kind of hoping for that 4.5+Ghz chip but if I am stuck at 212 I guess it isn't going to happen.
post edited by Pentium777 - 2010/04/11 09:37:51
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linuxrouter
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Re:Max Base Clock Strategy Guide 2010/04/13 18:47:26 (permalink)
The lockup could be board related. My E758 is able to reach higher stable bclk than my Classified board currently. I would not set PCI-E any higher than 103-104 since you may end up with network port issues if you go too high.

Turbo mode does provide consistent 21x multiplier with the EVGA boards. There is the possibility of a 22x multiplier for one core with the 920 if only one core is in use, but I personally have not seen this with my boards.

For the freeze, you may need to increase QPI PLL. Also, you may need to add a bit more voltage to the IOH. I prefer not to go over 1.3v for the IOH.

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Re:Max Base Clock Strategy Guide 2010/05/03 11:44:14 (permalink)
Lephron I credited you and this thread here: http://forums.evga.com/tm.aspx?m=225333

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Re:Max Base Clock Strategy Guide 2010/07/03 07:10:17 (permalink)
Hey there linuxrouter, thanks for this wonderful guide. I do have some questions though.


We start at bclk 160 and run LinX. If all is well, I would suggest the following increment scheme:
 
160-180: 10 notches up for each test
180-200: 5 notches up for each test
200-210: 3 notches up for each test
210-215: 2 notches up for each test
215+: 1 notch up for each test


I just had my first i7 build so please bare with me. With the statement above, when you say 10 notches up, do you mean 10 more test?! How about the problem size? How much do I use? Sorry for those newbie questions.

I followed your guide but I jumped directly to 200 Bclk and ran LinX for 15 passes using 20014 problem size and 3Gigs of ram and it passed. All the settings in the bios are just the same with the ones on the first page, except for the QPI frequency since the lowest this motherboard has is 36x. My VTT is set to 1.3v btw.

Am I doing it right?! Thanks


"The man who can't be killed, Chuck Norris" 
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linuxrouter
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Re:Max Base Clock Strategy Guide 2010/07/04 10:17:03 (permalink)
babolgam

Hey there linuxrouter, thanks for this wonderful guide. I do have some questions though.


We start at bclk 160 and run LinX. If all is well, I would suggest the following increment scheme:

160-180: 10 notches up for each test
180-200: 5 notches up for each test
200-210: 3 notches up for each test
210-215: 2 notches up for each test
215+: 1 notch up for each test


I just had my first i7 build so please bare with me. With the statement above, when you say 10 notches up, do you mean 10 more test?! How about the problem size? How much do I use? Sorry for those newbie questions.

I followed your guide but I jumped directly to 200 Bclk and ran LinX for 15 passes using 20014 problem size and 3Gigs of ram and it passed. All the settings in the bios are just the same with the ones on the first page, except for the QPI frequency since the lowest this motherboard has is 36x. My VTT is set to 1.3v btw.

Am I doing it right?! Thanks


For 10 notches, I mean going from bclk 160 to 170 for example. Maximum problem size will vary depending on how much memory is available. I like to set between 50-80% available memory with 6GB. Usually I set around 50% while increasing bclk gradually. Then for the final test I set the memory use to a higher amount.

If 200 bclk is stable, that should be good. You can try and see what the minimum stable voltages are at bclk 200 such as VTT and QPI PLL.
post edited by linuxrouter - 2010/07/04 10:26:18

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Re:Max Base Clock Strategy Guide 2010/12/18 13:51:01 (permalink)
I used all of the exact settings but my PC fails to boot. I even tried all different QPI Compensation settings. Anyone have any idea what the problem might be? Thanks.

System:

i7 920 D0
X58 E760
Gtx 580
1000 watt PSU
60GB SSD + 1TB HDD
DDR3 1600 7-7-7-20
H50 cooling

CPU: i7 920
Mobo: EVGA 3-Way SLI Classified
RAM: Dominator 6GB 1600
GPU: EVGA GTX 580
PSU: Corsair 1000HX
HDD: OCZ Vertex 2 60GB + WD 1TB
Case: Obsidian 800D
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ReSpawNnL
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Re:Max Base Clock Strategy Guide 2011/01/15 05:27:50 (permalink)
What is your POST code on the motherboard? Mine got stuck on b8 when I used 2:6 to test the height of the bclock. When I set it on 2:8 it posted again and it seems to be running smooth yet again.
 
Currently stressing with ~37k problem size on 200 bclock.

System specs coming soon...
 

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linuxrouter
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Re:Max Base Clock Strategy Guide 2011/01/15 12:56:16 (permalink)
I agree. The 2:6 divider does not always work for every configuration in which case 2:8 is the better choice.
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Re:Max Base Clock Strategy Guide 2011/08/10 20:01:04 (permalink)
HI. MY I7 920 PASSED 10 3GB LINUX AT 195BLCK..WITH QPI PLL:1.275 and IOH VCORe: 1.275. but there no way i can go any further....my COMPUTER auto restart after i hit apply on  ELEET even with 1.3QPI PLL AND 1.3IOH VCORE....AND I DID TRY TO ADD MORE..BUT IT AUTO RESTART ANYWAY.
I HAVE AN E760 MOBOO AND I HAVE EXACT SAME BIO SETUP LIKE OP
IS 195 bclk my limit or i have to add more vtt?
post edited by kiel^cx - 2011/08/10 20:07:14



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linuxrouter
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Re:Max Base Clock Strategy Guide 2011/08/11 09:40:02 (permalink)
What is your VTT set to currently? Do you have the CPU multiplier set low while trying to increase past 195? Is your QPI link set to 4.8 GT/s?
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Re:Max Base Clock Strategy Guide 2011/08/11 12:06:11 (permalink)
linuxrouter

What is your VTT set to currently? Do you have the CPU multiplier set low while trying to increase past 195? Is your QPI link set to 4.8 GT/s?

VIT is set to auto on my E760 which is 1.3v? and CPU multipllier is set to the lowest (15x) and i believe QI LINK is set to 4.8 GT/s per OP. Might it be QPI Compensation? i set it to less instead of middle



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linuxrouter
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Re:Max Base Clock Strategy Guide 2011/08/11 17:34:59 (permalink)
kiel^cx
VIT is set to auto on my E760 which is 1.3v? and CPU multipllier is set to the lowest (15x) and i believe QI LINK is set to 4.8 GT/s per OP. Might it be QPI Compensation? i set it to less instead of middle 

 
Try a bit higher on VTT such as 1.35v. VTT is the voltage for the Uncore including the IMC and QPI link. QPI compensation at Less sometimes helps with higher bclk but not always. You might try setting to middle for now.
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