Complete Overclocking Guide: Sandy Bridge & Ivy Bridge | *ASRock Edition* - Page 83

I've found the exactly specs of my rams :
Model Number : OCZ3P16002G
Timings : 7-7-7-20
Freq. : 1600 Mhz
Voltage : 1.9v

Currently they are running at 1333 7-7-7-20 with voltage "auto" (monitor tab shows 1.56v); and so if i would increase voltage insn't a good idea ??
Therefore i must leave this settings or change rams....

Run the memory at 1866, 1.65v

It should run.

Awesome stuff OP, it's great to see an OCing guide that's clear helpful and not a wall of text

Thanks for the tips. I have done a ton more work on the OC stuff:

I have been keeping a spreadsheet with the OC attempts I have done today. I have omitted any redundant stuff, so if something doesn't work on the sheet, you can assume that the voltages below it don't work either. I have them in mine being that I picked a starting point and if I didn't get it stable, I increased until I got a boot and those are in the sheet.
Spreadsheet (Click to show)
I have it color coded for ones that passed. The ones in black failed. Note that a TON of sets ran fine for the original 10-15 minute tests I was running but they ALL crashed at 25 minutes of Prime95.

For the max voltage, the lowest number is the minimum voltage I saw on load, the middle is the most common voltage I saw, and the highest is the absolute max. The voltage fluctuated a bunch at load, is this normal? I noticed that WHEA errors coincided with the times that the voltage would be at the low end of the load values. Is there any way to make it fluctuate less? Note that I started doing this later on in trials, the earlier ones just show max or the range.

For the times, if it was stable, I wrote the time it was stable for, and the time I ran each FFT.

I stopped at 45 for a multiplier because I didn't want to push too much voltage through this chip, as I would like it to last a few years. What is a safe voltage to have it on load for it to last that long?

Where would you guys go from where I am now? That last run actually just finished and ran 30 minutes without problems.

I know there are tons of questions in this post, but I would really really appreciate it if you could answer them all

Thanks again,
Big Al




EDIT:

Wondering if anyone can help here... So what is the best way to quick decide if a clock is stable? I am looking for a 10-30 minute test.

Currently, I am doing Prime95 27.7 with 4 threads and 90% of my available memory. I have each FFT running 2 minutes instead of 15, thinking that I can get through more tests in the same amount of time.

The only problem I have, is that every clock I have tried so far is running into problems and fits into one of the three categories:
- WHEA errors, Prime95 runs fine until 25 minutes
- No WHEA errors, Prime95 runs fine until 25 minutes
- Any sort of crash, no start, or BSOD

I find it odd that EVERY time Prime95 crashes, it occurs just before 25 minutes of testing (24:30ish). It always gives the error "Prime95 has stopped responding". I have not once gotten any Prime95 error other than the stopped responding.

Note: I did try my stock settings, and Prime95 runs for 30 minutes on my settings.

Should I change any of my settings? Is there something I am doing wrong that is making Prime95 to stop responding at the exact same time in each test?

It is stable for 30 minutes at the 44 multiplier near the bottom as well as the stock settings for Prime.

I will try reinstalling and running it at those settings again. Thanks!

I am pretty sure my hard drive and memory are stable, as I have passed MemTest and haven't had any SSD benchmarking problems.

If I want to use the processor for 4 years or so, what is the highest voltage you guys would recommend?

Thanks!

Sweet thanks for the info! I will prolly kick up the voltage above the 1.2V that I am at now.

prime is kind of based on long testing periode(10+ min per fft) though. you would get your cpu more stable running the FFT's that give these processors most problems like the small FFTS(8k, or just the small fft test, 2688k, 1344k, 1792k). if you want to test in 30 mins i guess best would be to run IBT or Linx for 30 mins( on 2gb-4gb mem) and look if your gflops are not deviating more than 2 gflops per run and check for whea errors. if you want to assure stability your going to have to test for longer though.
Edited by punceh - 6/21/12 at 11:26pm