Hello OCN, ive tried posting about this in the 1100T club but since the thread is kinda dead, i thought of posting up a new thread. Any tips are welcome ^^.
CPU: 1100T BE @4.0Ghz
Mobo: Sabertooth 990FX R2
Cooling: H100i Push/Pull + AC MX4
GFX: GTX 590
PSU: Corsair GS800
Case: HAF X
CPUZ Validation: http://valid.canardpc.com/2874896
So far ive gotten it pretty stable (not sure if 100% stable), ran p95 90% ram custom blend for 3 hours, did a playthrough on crysis 3, all fine no crashing or BSOD.
Note 1: HT & CPU/NB are set to 2600-Ish Mhz w/ 1.188V CPU/NB & 1.209V HT, RAM @1600Mhz w/ 1.616-1.620-ish voltage play.
Note 2: Idling at 39C CPU / 29C Cores w/ 33C room temp.
Note 3: All LLC stuff is enabled.
Anyhow, im running 1.418750V on the cores in BIOS with all LLC settings on auto and all power saving junk off, it usually idles at 1.428V sometimes 1.416V at 0% usage and 1.440V at like 35%.
Now, under load at p95 blend FFT 1024K w/ 90% RAM usage LLC bumps the voltage and plays around 1.464-1.476 with max temps 54C CPU / 45C Cores. Also @ FFT 8K Temps are 55C CPU / 48C Cores.
Note 4: I only ran p95 for 5 mins and let it go through like 3 tests just to get an example of my temps for this post, highest ive ever seen them was like 57C CPU. I dont remember the core temp bit ut was definitely below 51C .
I already tried to push my chip to 4.2 and i managed to boot fine with 1.431250V @ BIOS and get stable idling (web browsing CPUZ etc) with 1.443750 @ BIOS. in p95 it went at 1.50V from what i saw in CPUZ and BSOD after a few seconds of running so i stopped there and dropped it down to 4.1 with the same voltage since i dont wanna go over 1.55. So at 4.1 i saw that i did hit my heat wall with the H100i since at 1min p95 or so it went to 59C CPU Temp (i dont remember cores) and after a few seconds i BSOD so im guessing it needs a bump to the voltage which i cant handle heat wise atm. But i have another H100i laying around (broken pump, i think) and im gonna connect its rad to my current H100i and maybe i can go to 4.1 .
So heres the question part:
1) The most important that i havent been able to get a straight answer on: What temp do i need to make sure that stays below 62C? Is it the CPU Temp or the Core Temp? And, if its the core temp, how far can i push the CPU Temp?
2) What safe voltage do you guys prefer for 24/7 OC? I think leaving LLC on could allow you to have a high OC with low voltage when its not needed (i.e surfing internet / gaming) and a higher voltage bump when the CPU needs more juice. I could be wrong tho.
3) With LLC on would it be safe to have over 1.55 (like 1.60-1.62?) voltages under load? (I was thinking that since it bumps it down when its not needed it could be safe, but is it safe at all when its needed?)
4) Ive been thinking of attempting to re-do my OC without the CPU LLC, because some people say that sometimes LLC adds unneeded voltage under load, so i was thinking maybe i could hit 4.2 without LLC with less than 1.6V
Thanks in advance ^^
Edited by XC99 - 7/30/13 at 4:49am