OCZ 2GB PC2-7200 SLI-Ready Edition

[Unregistered]

Finally I buy PC7200 SLI Ready EPP (OCZ2N900SR2GK) because in my Region
OCZ 2GB SLI-Ready PC2-8500 costs on 60$ more than PC7200 SLI.
Here is my Results:
Max frequency:
1254-5-5-5-4-12 2.3v


Max perfomance:
1200-5-5-5-4-12 2.1v

 

[Rob Williams]

That's insane man, great overclock! You certainly have my kit beat.

Edit: That first overclock, how long does it last in MemTest for Windows, out of curiosity?

http://hcidesign.com/memtest/ (two instances, each with 900MB)

 

[Vet@L]

That's insane man, great overclock! You certainly have my kit beat.

Edit: That first overclock, how long does it last in MemTest for Windows, out of curiosity?

http://hcidesign.com/memtest/ (two instances, each with 900MB)

It was my results, I have a litle trouble to register on this forum.
At first, thank you for this link! Cool test!!! And..it was not passed Very strange, bacause SuperPi is pased over 15 min, Everest passed all his test, playing STALKER is ok, but not this test! It continue only 10-15 minutes and throw down with error
But! Now MemTest is my first program for check stability!

 

[madmat]

You had trouble registering thanks to your fellow countrymen spamming our forums with ads for cell phones and other assorted garbage. Rob did an IP ban that pretty much bans all of Russia from registering into the forums thanks to the ones that are non-stop plaguing us. I'm really sorry about that but it got to be of near epic proportions.

 

[Faiakes]

Can you verify what ICs they are using? D9GMH, D9GKX, or others?

They are D9GKX indeed.

I just bought a pair of these too and I'll be reporting my overclocks in a while.

However, I am interested in the lower possible timings at 400, 430 and 450MHz as I plan to overclock my E6600 only with 1:1 ratio.
I'd like to know the best possible timings others have managed at those speeds, at what voltage and whether active cooling was needed.

P.S. I have no case but a Tech Station rack.

 

[Rob Williams]

From my review:

• 400MHz (DDR2-800), 1.9v, 4-4-4-12-13
• 450MHz (DDR2-900), 2.1v, 4-4-3-12-13
• 500MHz (DDR2-1000), 2.1v, 4-4-4-12-13
• 533MHz (DDR2-1066), 2.3v, 4-4-4-12-13
• 575MHz (DDR2-1150), 2.4v, 5-5-5-18-13
• 600MHz (DDR2-1200), 2.4v, 5-5-5-18-13

For 1:1, I'd try for 450MHz.

 

[Faiakes]

From my review:

• 400MHz (DDR2-800), 1.9v, 4-4-4-12-13
• 450MHz (DDR2-900), 2.1v, 4-4-3-12-13
• 500MHz (DDR2-1000), 2.1v, 4-4-4-12-13
• 533MHz (DDR2-1066), 2.3v, 4-4-4-12-13
• 575MHz (DDR2-1150), 2.4v, 5-5-5-18-13
• 600MHz (DDR2-1200), 2.4v, 5-5-5-18-13

For 1:1, I'd try for 450MHz.

I've got your figures Rob, thanks.

However, 9x450 on a 1:1 ratio might be too much for my E6600 even with a Tuniq 120...
According to Anandtech the best I can hope for with a P5N32-E SLI Plus is 9x430, which is why I bought 7200 memory.

So, I guess I want to experiment with the best timings at 400MHz and 430MHz with 2.1, 2.2, 2.3 volts especially with whatever does not require active cooling.
I don't want to publicise other websites here but I have seen figures as low as 400MHz at 3-3-3-8 2T with 2.3V quoted.

 

[Rob Williams]

I am not sure what motherboard you have, but 450FSB shouldn't be too much of a problem. Just change your multiplier to 7, crank the voltage to 1.350v or 1.375v and see if it's stable. That would be 3.15GHz, and the Tuniq is a huge cooler so I assume it can handle thing minute increase in voltage.

If you are running DDR2-900 speeds, you shouldn't need to go above 2.1v as mentioned in that list. Personally, I'd go for 450FSB, 7x Multi, 1.35vcore, 2.1vdimm, 4-4-3-12 timings and see what happens. Just make sure that the memory is clocked properly in the BIOS. I am not familiar with the P5N32-E SLI (if that's what you have) so I can't give precise instructions.

400MHz 3-3-3-8 could very well be possible, but 2T wouldn't be necessary, 1T should work fine up to 425MHz. I am actually finishing up benchmarking another kit atm, and will throw in my 7200 kit to see if it will handle that overclock there. Will post results in an hour or less.

 

[NicePants42]

[OT]
@Faiakes: Are you the person behind this?
[/OT]

 

[Faiakes]

Yes sir, I am.

 

[Faiakes]

UPDATE:
Correct Rob, I do have an Asus P5N32-E SLI Plus (650/570 chipset, latest BIOS and Drivers), WinXP (of course, as if I would touch Vista...)


OK, I tried:

400MHz at 4-4-3-5 2T with 2.1V - POST, Freezed in Windows , BSOD
400MHz at 4-4-3-8 2T with 2.1V - POST, Freezed in Windows
400MHz at 4-4-3-12 2T with 2.1V - POST, Windows OK
400MHz at 4-4-3-12 2T with 2.1V, linked, 1:1, multi at 6 = 2.4GHz (E6600 standard frequency), 1.35vcore - no POST

Ooooops, these results were without having a pagefile....
I will repeat with a 2048 static pagefile and report back.

 

[Rob Williams]

By looking at your first two results, I would definitely keep the tRAS at 12 or higher. tRAS makes virtually no difference in performance anyway. The last setting confuses me though... you said multi was at 6, but that would be 266 * 6= 1.6GHz.

I took a look at some BIOS shots from another review, and this is what I would set:

FSB & Memory Config
Memory Clock Mode - Unlinked
FSB (QDR) MHz - 1066
MEM (DDR) MHz - 900 (Will result in DDR2-889 because of dividers)

Overclocking
CPU Multiplier - 9

Over Voltage
VCore Voltage - 1.350v
Memory Voltage - 2.2v

Memory Timing Setting
CAS Latency - 4
tRCD - 4
tRP - 4
tRAS - 12
CMD - 2 clocks
tRC - 21

Edited: I meant Multi 9, not 7.

 

[Faiakes]

By looking at your first two results, I would definitely keep the tRAS at 12 or higher. tRAS makes virtually no difference in performance anyway. The last setting confuses me though... you said multi was at 6, but that would be 266 * 6= 1.6GHz.

But FSB/Mem were set to Linked...or have I not understood the Intel process properly?

I set the Rated FSB to 1600 (which divided by 4 = 400), so 6x400 = 2400, the E6600 standard frequency. Is that right?

EDIT:
Quick question: when overclocking Core 2 Duos does CPU Internal Thermal Control need to be set to Disabled?

 

[Rob Williams]

I understand you now. I didn't realize you were using a 400FSB, which in that case, you are absolutely correct. However at that point, your instability is likely due to the lack of FSB voltage and nothing else. I'd bump up the Northbridge and Southbridge voltage, and try those settings again. I'd notch each up around 10% (1.30v bump to 1.45v for example).

I still believe, if you set all the settings that I mentioned above, you will have a stable overclock. You will lack the 1:1 ratio, but that's not too important. However, I still believe with bumping up your NB/SB/FSB voltage, you will have better success.

 

[Faiakes]

I see. Thanks Rob, I'll investigate the voltages issue and report back.

 

[Faiakes]

OK, I went to overclocking.net for more details and realised one thing: it's all down to your CPU week production.

Mine is a E6600 L629F which means it has it's own quirky settings.

What I have yet to determine is how much does one usually need to increase NB, SB for a target of 3.4-3.6GHz

Plus I don't even know what 1.2V HT and CPU VTT are!

 

[Rob Williams]

3.4-3.6GHz might be a little hopeful for an air cooler. I am not sure if I've ever pushed my E6600 there on water, let alone air. I could be wrong though. You were running 400x6 though and it proved unstable.. I'd worry about making that stable first and see what happens.

In addition to what I listed in post #32, if you want 400*9, you'd want at least 1.45vcore. For 400FSB, I'd put all of your FSB related voltage options to the middle setting.

Still, you should run those settings as I mentioned there, just to see if it proves stable. Play around for a bit. Overclocking gets easier the more you understand it

 

[Faiakes]

That was my fault I think because I didn't Disable all the relevant CPU options such as speed throtling nor did I increase the NB/SB voltage.

From what I read 3.6 is well within the E6600's limits even on air but it does require a quality high perfromance heatsink like the Tuniq 120 or Thermalright Ultra 120 or Thermaltake Max Orb.

 

[NicePants42]

[OT]

Yes sir, I am.

Well, I'd like to thank you for your work on that mod. I never played through the vanilla version, and haven't experimented with a whole lot of mods (yet) but Faiakes 2.3 is very enjoyable thus far. Thanks again!
[/OT]

 

[Rob Williams]

" 400MHz at 4-4-3-12 2T with 2.1V - POST, Windows OK "

I'd run that setting again, and then download MemTest for Windows, run two instances at 850MB per. This is just to make sure that your memory is functioning properly. As for the E6600, 3.6GHz should be easily possible, but I'm not sure how much voltage that would require. I'd assume at least 1.450vcore. Just remember that increasing the FSB is a big deal, and will require a voltage boost on the SB and NB. The stock FSB is 266, so pushing it up to 400 would probably need a healthy voltage nudge.