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overclocking q6600, weird memory instability

Forum Overclocking : General Discussions - overclocking q6600, weird memory instability

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johang   02-13-2008 at 05:46:06 PM

im trying to get my q6600 g0 stable my problem is that on 320 x 9= 2.88ghz with memory in 1:1 (640) ratio is stable but as soon as i go up to 340 with memory at 680 prime95 fails blend and large fft test. my memory is ddr2-800 cl5 so it should handle that easily. if you push to 400x8 = 3.2ghz with memory on 800 with 5,5,5,15 timings then its more stable but not 100% . it seems that as soon as you go past 667 it boms out.

any help please

q6600 g0
biostar p965pt mobo
2 x 1gb ddr2-800
600w coolermaster igreen psu
lots of cooling

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richardscott   02-13-2008 at 06:22:43 PM
- 0 +

run ure mem in linked sync mode for extra stabilty

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johang   02-13-2008 at 06:54:42 PM
- 0 +

they are. i said my memory is in a 1:1 ratio with my fsb. thats why 320 fsb gives me 640 on my memory

Reply to johang
PlasticSashimi   02-13-2008 at 07:26:08 PM
- 0 +

I run mine unlinked, it alowed me to test more settings and my benchmarks tell me 1:1 isn't always a big deal.

 

just try for some kind of reasonable ratio

Message quoted 1 times
Message edited by PlasticSashimi on 02-13-2008 at 07:28:15 PM
------------------------------ Q6600 B3 @ 3.3Ghz Air 1.37v (36c Idle: 65c 100%Load) <--hottest core || Zalman 9500
BFG 680i SLI Mobo 1466 FSB (for 366x9) || 2GB GSkill DDR2 800 @ ~900Mhz 2.075v 4-4-4-12
evga 8800 GT (S.C. ed.) || Antec Titan Server Case || Vantec Stealth || 13,949
Reply to PlasticSashimi
PlasticSashimi   02-13-2008 at 07:27:24 PM
- 0 +

oops


Message edited by PlasticSashimi on 02-13-2008 at 07:27:51 PM
------------------------------ Q6600 B3 @ 3.3Ghz Air 1.37v (36c Idle: 65c 100%Load) <--hottest core || Zalman 9500
BFG 680i SLI Mobo 1466 FSB (for 366x9) || 2GB GSkill DDR2 800 @ ~900Mhz 2.075v 4-4-4-12
evga 8800 GT (S.C. ed.) || Antec Titan Server Case || Vantec Stealth || 13,949
Reply to PlasticSashimi
johang   02-13-2008 at 08:37:54 PM
- 0 +

weird i changed the module from dimm 0 to 3 and the one in 2 to 1, swapped banks and order and bobs your uncle, looks stable so far gotta run tests

Reply to johang
Mondoman   02-14-2008 at 12:39:11 AM
- 0 +

Have you set the RAM/DIMM voltage to the manufacturer's spec (which is often higher than the 1.8V DDR2 standard)?

------------------------------ e2160@3GHz: OCing my way to Ubuntuland!
 Reply to Mondoman
johang   02-14-2008 at 08:08:21 AM
- 0 +

the manufactures website says JEDEC standard 1.8v + 0.1v and VDDQ same voltage

Message quoted 1 times
Reply to johang
mugz   02-14-2008 at 09:33:41 AM
- 0 +

Give it 2.0V.

------------------------------ http://www.catb.org/~esr/faqs/smart-questions.html - I WISH PEOPLE WOULD APPLY THIS!
 Reply to mugz
Mondoman   02-14-2008 at 10:36:21 AM
- 0 +

johang wrote :

the manufactures website says JEDEC standard 1.8v + 0.1v and VDDQ same voltage


Are they saying that your specific RAM model number uses a 1.8V spec, or that the JEDEC standard uses a 1.8V spec?
What brand and model number RAM are you using?

Reply to Mondoman
johang   02-14-2008 at 03:27:32 PM
- 0 +

2 x 1gb transcend jetram ddr2-800 cl5

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