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**Ivy Bridge Overclocking Guide** (with LN2 Guide at The End) - Page 22

post #211 of 1225
Quote:
Originally Posted by PMantis24 View Post

With Prime95, make sure you have version 27.7 with AVX instructions, it stresses the CPU a lot more than previous versions. Set it to custom, change the memory to 90% of your total, so if you have 8GB (8000mb), set that number to 7200. You can change the time per FFT if you don't want to wait close to 24hrs for it to finish an entire loop. There are 82 FFT lengths, so you can figure the time required to finish that. Let it run through the entire loop.
Afterwards you can do a quick 1 thread test to make sure your stable on that. If you crash it's probably cause the voltage is dropping too much during a single core load.
IBT is a good quick test and heat generator, to see what your temps are like at MAX.

If you do 90% RAM, make sure your pagefile is set to 1.5 times the RAM at max because if not, that will cause a worker to stop. That happened to me.
post #212 of 1225
Quote:
Originally Posted by Nihilo View Post

If you do 90% RAM, make sure your pagefile is set to 1.5 times the RAM at max because if not, that will cause a worker to stop. That happened to me.

Well this could maybe explain some quick stopped workers... how did you determine that this was a fix?
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post #213 of 1225
Quote:
Originally Posted by bgineng View Post

Well this could maybe explain some quick stopped workers... how did you determine that this was a fix?

It said it stopped due to system memory page or something of that nature. Googled it and found out that it was related to pagefile system. Windows recommends 1.5 x RAM size, but if you let the system take care of it, it puts it well below that.
post #214 of 1225
Quote:
Originally Posted by Nihilo View Post

It said it stopped due to system memory page or something of that nature. Googled it and found out that it was related to pagefile system. Windows recommends 1.5 x RAM size, but if you let the system take care of it, it puts it well below that.

I really don't want to use a 12GB pagefile... That seems ridiculous.
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post #215 of 1225
Quote:
Originally Posted by bgineng View Post

I really don't want to use a 12GB pagefile... That seems ridiculous.

LOL mine is set to 24GB, but I'm ok with that. Not like I'm ever going to actually fill that up. Here's windows recommendations on pagefile sizes.
post #216 of 1225
For some reason I never got that memory error without changing my pagefile size. You don't have to do 90%, 80-90% is fine as well. You just wanna work as much of your available memory and cpu at the same time.
post #217 of 1225
Is that b/c you are Oc'ing your cpu and ram?

Hey PMantis24, were you ever able to get above 4800? I was able to get my 4700 stable using your settings way back at the beginning of this thread, but having trouble with my temps with 48 (max 92 using prime blend).
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post #218 of 1225
Quote:
Originally Posted by PMantis24 View Post

For some reason I never got that memory error without changing my pagefile size. You don't have to do 90%, 80-90% is fine as well. You just wanna work as much of your available memory and cpu at the same time.
See, I didn't run that much memory on mine. I did probably 12GB out of 16GB. I did run memtest for 12 hours before I even started OCing this rig and I haven't OC'ed the ram yet, so I'm pretty sure it's good.
post #219 of 1225
Quote:
Originally Posted by Nihilo View Post

See, I didn't run that much memory on mine. I did probably 12GB out of 16GB. I did run memtest for 12 hours before I even started OCing this rig and I haven't OC'ed the ram yet, so I'm pretty sure it's good.

Yea, if you ran memtest beforehand then you know your memory is good to go thumb.gif
post #220 of 1225
Quote:
Originally Posted by barkeater View Post

Is that b/c you are Oc'ing your cpu and ram?
Hey PMantis24, were you ever able to get above 4800? I was able to get my 4700 stable using your settings way back at the beginning of this thread, but having trouble with my temps with 48 (max 92 using prime blend).

Furthest I went was 4.7 @ 1.2V, I could probably do 4.8. Temps @ 1.2V were about 80-85C on load. Just guessing i'd probably need 1.25+ for 4.8, temps around there would probably start to reach 90C. Getting uncomfortable for me personally, even though it's only during stress testing. Once I found out I could do 4.5 close to stock voltage I was happy and stopped playing around biggrin.gif

4.7 stable is damn good though from what I'm seeing. A lot of people are having trouble just hitting 4.5 stable without bumping the voltage to uncomfortable levels. Temps really rise quick on this chip. Of course with awesome cooling one could push further.
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