For the record, if anyone's interested, I have this Patriot RAM, 2 full kits of it (for a total of 4x2GB, 8GB altogether) installed on my EVGA 132-CK-NF78-A1 board, with stock BIOS, and it runs VERY stable.  No issues whatsoever.  I don't have anything OC'd however, the RAM is all at default voltage and timing settings (NOT the mobo's, the RAM's settings, which had to be manually adjusted in BIOS), etc., so I wouldn't know if it would cause any issues if I did (don't really care to OC honestly), but at stock (marked/labeled) voltage and timing settings, it runs fine.

Call Sean at the toll free number ,i know he could suggest start and end values to try .

Been away from forums for a long while. Just decided to do 4x2 with Patriot Sector 5 PGV34G2000ELK. Glad I saw this post. Taking the tRFC from 94 to 100 was what I needed to do. I saw that Gryphon recommended 110 but I felt since I was underclocking these sticks, I am running 1700 L/S that I would not need to go that far. Passes Intel Burn test, Memtest 4.20 3 passes and Prime has been running all day no problems so far. Before going to 100 Memtest passed no issues but prime would always stop on one worker usually #2.
I do have the CPU Core at 1.45v, CPU FSB 1.30v, SPP 1.40v MCP 1.550 (Lots of USB Stuff) and the Memory is stock voltage 1.65v.
I am going to try to back down on CPU Core but this Q9450 eats juice for breakfast, lunch and dinner. Even when had only 4gb memory. Had to run it at 1.475 when ran @1800 so I am not expecting it do lower much if at all. But I am glad that it appears to be stable now. Love this board and don't expect to upgrade for awhile. I see no point yet. I may just upgrade video card. That would give me more of a boost. Still have my 9800GX2 dual. Would love a GTX590 but may wait for the new 600 series.
 
Anyway thanks for the post and glad to see there are still some of us pluggin away on this board!

feniks

^ at 1700MHz you shouldn't need more than 1.25V on VTT (FSB voltage) and with some GTLVREF playing around you should be able to easily run it at 1.15V, that's what I have at 1800MHz now, fully stable

 
Got the VTT down to 1.25v. Tried to take it to 1.20v but no success on that. Happy to shave off this much. Thanks. Good suggestion. I revisited the rest of my voltages and timings and shaved off a little there as well.
Seems very stable. Thanks.
 
Loving the 8gb memory.  Even though the Patriot Sector 5 sticks I have are XMP not EPP (Intel not Nvidia) they work great. My last set were Patriot as well and they were EPP. I have not noticed any difference in behavior. I think if you spend time in researching your purchase and are willing to spend much time in your BIOS and in testing all will be well. This is a very good post because no matter what and how much you know you can always get something from this type of post. Glad it is a sticky.

removed

For whatever it's worth;
 
I went out and bought a whole wack of different 2x4GB kits to try on my 790i Ultra. Many of the kits I purchased seemed finicky and the computer behaved in a flakey unstable way with 2x4-8GB or RAM.
I ended up with some GSKILL Ripjaws 1866MHz 9-10-9 stuff that runs on 1.5V and its great. Using 1.4V SPP, 1.5V MCP and the stock 1.5V to run this RAM at 1800 linked and synced with my Q9650 sitting at 4.05GHz. P1 and P2 enabled. No freezes no glitches, been more stable than my old 2x2 Patriot Vipers ever were.

yes 2 4 g sticks is much more stable and less strain on the controller.Mushkin advised me of this and im so happy with the suggested memory they pointed out .Runs a tad slower (i mean really small diff in timing )and runs at a massively lesser amount of voltage .The ones Mushkin sold me on can be found on my Mods rig link to the left .Since changing over i have had 0 issues and use less voltage with the same performance

the guys at Mushkin were so happy to walk me threw suggested timings and even while i test booted each one .spent like 10+ mins on phone with him.Great company with solid products and EVGA like support .Wish EVGA would do some Mushkin type giveaways in contests.

can you guys supply me a link to a inexpensive 4gb stick?
 
otherwise id be willing to use 4 2gb sticks if the stuff on the front page isnt too much of a headache

anywhere under 100. i know these can be expensive

oh and my board is a 750i sli ftw.

oo 750,im not seeing  any kits for 750's above 2g .might be a hardware limit ,we are talking about 790 series mobo's in this post
http://www.mushkin.com/Me...VGA.aspx?systemid=6332

biscuit1

Just added 8 gb to my 780i sli board. Got the matched set at newegg (pricey-$150.00). Gskill guarantees them to work on any 7xx series motherboard. Part #F2-6400CL5-2GBPQ . Just reset my memory settings to stock & plugged them in. Moterboard reconized all right away w/no issue .

 
 I've been running the same ram since 2008 and running it 2X4 with a memory fan
 

Has anyone tried 8gb of pc8500 1066mhz on a 750i FTW? Im seeing alot of posts on the 790i boards but not much on the 750i. Ive gotten 8gb of pc6400 to work @800mhz but unsure of 1066. Thanks

stealthrt2007
Has anyone tried 8gb of pc8500 1066mhz on a 750i FTW? Im seeing alot of posts on the 790i boards but not much on the 750i. Ive gotten 8gb of pc6400 to work @800mhz but unsure of 1066. Thanks

Yea I run the following kit when i build the machine way back then. Running 8gb at the recommended configuration from mushkin. Extremely stable haven't had any issues since 2008. http://www.newegg.com/Product/Product.aspx?Item=N82E16820146785
 
When you put it in the mobo itll have the wrong speed and timings. You have to configure it manually to the ones mushkin provides. So mine is running at 1066.