OCZ 3700 El Gold problems at 5:4 P4C800E

[marscay]

Having system reboots with this ram on my 2.8 M0 past 265FSB.

This is in a Mach-II and this processor is stable at 3700 265FSB with vcore of 1.55v.

I am prettty sure this cpu will get to 4ghz with 1.7/1.75v so i don't think i am reaching my limits at 3700 just yet, increasing the voltage makes no difference ....still reboots. It also seems that tighter timings even at 210 for the memory which is rated 233 @ 2.5 makes the machine crash alot quicker ...enabling PAT and Turbo etc etc so i am pretty sure this memory is crap on this board (P4C800E) at 5:4. Memory worx fine at 255FSB 1:1.

Has anyone else seen this kind of thing with this memory at 5:4?

 

[AudiMan]

My OCZ Gold EL PC-4000 doesn't like 5:4 dividers. It gets really unstable. I'm assuming it's the RAM and not your mobo.

 

[marscay]

Even though it will cost me money i hope you're right

Come to think of it ....even on my 3.0c i had trouble going past 255 with 5:4 ....at 255 1:1 it was fine yet 260 was impossible at 5:4 no matter what voltage.

 

[AudiMan]

With your setup I would go for some mushkin level 2 and sell your OCZ. You'll get much better performance running 2-2-2-6 @ 5:4 and you'll be able to push your CPU higher.

 

[marscay]

i am torn between high FSB @ 1:1 or lower FSB and tight timings.

 

[AudiMan]

Based on my experience and on your setup (SL6Z5 + Prommy) you would get better performance running 5:4 with tight timings.

Personally I think that all the PC-4000+ stuff is just a marketing gimmick.

When pushed to the limits, my Corsair and Mushkin RAM with BH-5 outperform my PC-4000 OCZ.

 

[AudiMan]

Also, 285-290 FSB is realistic with a 2.8C "M0" and a Mach II, but where are you gonna find RAM that does 285-290 1:1?

Use the 5:4 divider and run your RAM at ~230 FSB 2-2-2-6 or 2-3-2-6 which is way easier to achieve than 285-290 FSB 1:1 (3-4-4-8).

 

[itizme]

First I don't know why you are running at 5:4, go loose and see how high you can get the cpu. I would think that at 3448 you should be able to get the cpu as high as you can go. At that point try dropping the timings and see how it is going.
I would expect that for the money you spent on that ram you should get to a 300 fsb while loose.
Its just too bad these intels don't have an endless overclock to them

 

[Nomjr]

might want to hit up one of the ocz reps also and ask some questions. when I had my ocz 3700, I could run 2.5,3,3,7 @ 295 5:4 on a p4c800d with no trouble.

 

[marscay]

yeh i think you're right Audiman gonna order some Mushkin LV2 methinks and see how that performs

i have been reading on some other forums about ppl having trouble on the 5:4 divider on this board once they past 260-270FSB and getting some good quality BH-5 fixed the problem....lets hope that's the case.

I have benched this proc at 4050mhz with 1.8v for 1 hour in prime so i cant believe that its not stable at 3700 @ 1.7v. Convinced its a memory thing as the bsod's are just random too ......i had prime running for 3hours and then a BSOD ...if i was on air i would say yeh it's too hot but on phase you normally find out within 15 mins if you havent got enough volts or o/c too far coz prime will just error out, but i am always getting BSOD's.