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Finaly made 4.0, 1.2 GHz overclock. - Page 2

post #11 of 19
To be fully compliant with the JEDEC DDR2 standard specifications the modules must adhere to 1.8V. This voltage operating feature lowers power consumption, board temperature and extends battery life in mobile applications and this standard was created for for this in mind.

Corsair rates it's DDR2 modules at 2.1 within specific warranties. There is a difference between the JDEC rating and the actual ability of the dram.

Quote:
Originally Posted by TheRamGuy-Corsair
All of our DDR2 modules are warranted up to 2.1 Volts.
http://www.houseofhelp.com/forums/sh...ad.php?t=47897

My view? You will never hurt the DRAM at levels ~2.1V

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post #12 of 19
Could you post your BIOS settings so I could compare them to mine?

I'm stuck at 261 (3.66GHz) and can't seem to go an inch higher.
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post #13 of 19
Quote:
Originally Posted by Nasgul
W/ 4-4-4-8 or 4-4-4-12 you'd be pulling a 1:1 ratio, that 4:3 is weak. Just set RAM to 2.3v. BTW, my ratio is a 1:2.

Nice job also.
Though divider works, you don't want your RAM faster than the CPU freq. It just doesn't give you the full performance.
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post #14 of 19
Thread Starter 
Ok guys I started primein the system but forgot to set the ram back to 1:1 ratio, so Im priming it again and will let it run all night just to make sure, if it does a 12 hour prime Im going to pump the FSB higher and start all over. Im very happy with the temps so I think Ill be pushing for more soon.

Quote:
Great job

Great work you have done there with that 2.0 chip
Awesome job.
Now the hard part of making it stable.
Prime it for at least 7hrs and keep us posted
Thanks, its actualy a Pentium D 2.8 I dont think getting it stable at this point will be to hard as my main issue is temps, and frankly at this point Im finer then a frog hair split 4 ways(very happy) . I havent had a single problem yet during prime95 and everything Im doing but only time will tell.

Quote:
To be fully compliant with the JEDEC DDR2 standard specifications the modules must adhere to 1.8V. This voltage operating feature lowers power consumption, board temperature and extends battery life in mobile applications and this standard was created for for this in mind.

Corsair rates it's DDR2 modules at 2.1 within specific warranties. There is a difference between the JDEC rating and the actual ability of the dram.
Hmm thats some good info, as is Im only at 2.0 right now running 4-4-4-8 timings with a 1:1 ratio

Quote:
Could you post your BIOS settings so I could compare them to mine?

I'm stuck at 261 (3.66GHz) and can't seem to go an inch higher.
Anyways as for bios settings I have everything disabled except manual items and auto voltage for the chipsets and what not. My PCI is locked at 100, the other 33.3. I have all the auto ram features disabled. Pretty much everything is manualy adjusted.

Heres a post of temps before I change the ram setting back to 1:1.
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post #15 of 19
Quote:
Originally Posted by Zipnogg
Quote:
Originally Posted by Nasgul
W/ 4-4-4-8 or 4-4-4-12 you'd be pulling a 1:1 ratio, that 4:3 is weak. Just set RAM to 2.3v. BTW, my ratio is a 1:2.
Nice job also.
Though divider works, you don't want your RAM faster than the CPU freq. It just doesn't give you the full performance.
From personal experience, best way to achive some extra performance not going over the 300fsb is to run RAM at 3:5, some but not all can achive a 1:2, personally I feel that 1:2 is the best and 3:5 2nd best. 300fsb+ @ 1:1 is the very best.

Look at my sig.

The way I see it:

First, MoBo makers such ASUS, ABIT and GIGABYTE fully support DDR2 800 and can hit as much as 1000mhz but in dividers like 3:5 and 1:2 which is what I run my system at.

My system is not 100% stable @ 250fsb, my guess is because I don't want to give it a 1.5+v.Core but I've hit 500mhz before: SEE HERE but since that I like to run my system at stock voltages I've found that 236fsb is what I'd be running it at, so the RAM does 473mhz (or 946mhz) @ 4-4-4-4(2) timings and 2.1v, that's 0.1v less than the recommended voltage: SEE HERE ONE and then SEE HERE TWO.

I like DDR2 way better than DDR, for the longest I had RAMBUS because I run my CPU and RAM at the same 400mhz fsb for both, with DDR I never felt it was good an 800mhz cpu and 400mhz memory (that's just my personal opinion) but with DDR2 I feel more like in the RAMBUS days.....236fsb x 4 = 944mhz (quad pump CPU) and RAM @ 473fsb x 2 = 946mhz (Double Data Rate RAM). I had RAMBUS for 3-1/2 years and my affair with DDR only lasted 4 months.

And so that's how you can achive 800mhz memory, Intel based motherboars support DDR2 800, unless they don't come from Intel itself, and not necessarily you have to use a 1:1 ratio to hit 800mhz, it can be done with 3:5 and 1:2.

^^^That's from when I had my 650 and now that I have my 660 it just works out the same way. ^^^
post #16 of 19
http://www.tomshardware.com/2006/02/...ry/page27.html

Tom's Hardware Guide just finished an intensive DDR2 test OCing and overvolting to 2.2--they stated in the article that 2.2 produced no problems--apparently DDR2 modules are significantly more robust than DDR.

I would say you could easily gain more stability and lower your divider by raising the voltage to 2.2
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post #17 of 19
Thread Starter 
Well I ran Prime all night, so its Prime stable at 10 hours, Heres a screen shot of the temps clock and 6 hours into the test. temps stayed at 45C load pretty much the whole time with some minor spikes to 47C. Man now I just need to get a new video card and start playing some games... Maybe
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post #18 of 19
Quote:
Originally Posted by Adeoliver
Well I ran Prime all night, so its Prime stable at 10 hours
Great stuff. Now have some fun

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post #19 of 19
You inspired me! I pushed it to 4.2--2.8 to 4.0 is really out there--congrats on the Nice OC keep it uP!
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