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In the middle of OCing, have a few questions

S

shiranai

Member
Just a few OC/stats questions:

1. CPU-Z, nTune, and the BIOS disagree on Vcore. I'm running a Venice 3200+ at stock voltage, which the BIOS lists as 1.40V, CPU-Z lists as 1.375V, and nTune lists as 1.58V. I'm guessing the voltage isn't 1.58, since changing the voltage in the BIOS does not change the 1.58V in nTune, but the discrepancy between CPU-Z and the BIOS is still 0.25V, which is a fairly significant error. Which one of these is correct, and what is up with nTune?

2. I bought a 2x512MB kit of OCZ's Value VX (OCZ4001024WV3DC-K). When checking the SPD tab of CPU-Z, one of the sticks is labelled as expected, but the other one is listed as OCZ400512P. I bought the kit retail from Newegg, and I also inspected the RAM stickers, the markings of the modules themselves, etc. and they seem identical (although I'm aware that such a surface examination could be meaningless). Is CPU-Z right, and should I RMA this?

3. If only SATA 3/4 are locked, does that mean that only 2 SATA drives can be installed while overclocking? If not, how would I add additional SATA drives?

Thanks in advance.
 
Thanks for the reply.

1. The CPU VID/special settings table in that thread is for the nF3 Ultra. Also, it is not consistent with my own results. The BIOS displays a Vcore usually within +-0.02V of the CPU VID setting. CPU-Z actually displays a smaller Vcore (stock 1.40V displays as 1.37, 1.50V displays as 1.472). nTune always displays Vcore = 1.5304, regardless of the CPU VID setting in the BIOS, so I'm guessing that value is just wrong, period. My question, then, is whether CPU-Z is right, and whether anyone knows anything about nTune and its accuracy?

2. I guess I'll PM that OCZ guy :/

3. That's good to know. Just out of curiosity though, how would you add additional SATA drives to an OC'd system with only SATA 3/4 locked?

Also, additional question: what's safe Vcore/temps for Venice 3200+? I'm running a 2x120mm box with CPU fan on max at all times (~3000rpm, IIRC), and at Vcore=1.475V I'm getting core temps of ~35C idle and ~50C full load (ie. Prime95). Is this too high?

And one last question: does running the fans at max all the time decrease their working life? I don't really care about the noise at all, so if there's no actual affect on the fan itself I'd like to keep all fans running max.
 
software always reports voltages differently.....that table can be used for any of those boards....math doesn't change.

i would say safe voltage up to 1.6...but depends on whom you ask....check out the posts at dfi-street
 
>> software always reports voltages differently.....that table can be used for any of those boards....math doesn't change.

I didn't notice that they were just doing straight multiplications, for some reason I thought there was more to it than that >_<. You say software reports voltages differently, but shouldn't they be getting their data from the same place (ie. the mobo)? Since the mobo should be the only hardware that's capable of evaluating Vcore, the software should all be reporting similar values ... right?

>> i would say safe voltage up to 1.6...but depends on whom you ask....check out the posts at dfi-street

Max selectable CPU VID on the nF4 Ultra-D is 1.5-ish (I think 1.55 or so), since it's a 90nm core. Bah, I'm going to take this up to ~1.53 or so and see what I can get ^_^.
 
that's what the cpu special vid control is for....you can set it to 2.1 volts if you want. 1.5 + 136%
you're missing the percentage part...do some more reading/nosing around on dfi street.

1.4 for CPU
1.4 for CPU VID
104% Special

that would give you 1.45 volts....thats fine for stock
 
I have the same board with some OCZ VX. I found that the #1 inhibitor of overclockin is leaving things at auto. Killed me for 3 days. Go to DFI street in the 64-bit forum there is a memory guide, follow that and you should be set. I set just about everything for stability and have it runningat ddr490 right now. Can't seem to get it to hit ddr500.
 
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