|09-20-2012, 08:24 PM||#1|
Join Date: Aug 2011
Phenom II 1090T freezing in Prime95
Ehh..I posted this on other forums, and I was wondering if the Steam Community can give me a hand.
So I updated my BIOS to v2002 for my Crosshair IV a few weeks ago, and I thought it would be a great chance to mess with some overclocking again. The last time I updated the BIOS was when I first got the board (v1005).
Anyways, I decided to do some overclocking with my chip by only upping the multiplier, and I can't get it to run stable.
The problem is, the whole computer would lock-up / freeze after ~3 minutes into Prime95 Blend Test. I don't get any BSOD's and nor does Prime95 stops itself - the system just freezes and only a reboot works. I can..surf the web, go onto the forums here, watch a 30 minute YouTube video and it would be okay.
I'll follow prodecures as always so...
Phenom II X6 1090T attempt at 4GHz (200MHz default bus X 20) *I was able to hit 4GHz before by only changing the Bus speed (I was running the system at 4GHz way before attempting this; 250MHz X 16)
ASUS Crosshair IV Formula 890FX Mobo with BIOS 2002
8GB (4GB X 2) GSkill RipJaws DDR3 1600MHz RAM at default (I've tried both 1333MHz and 1600MHz)
Thermaltake Frio CPU Cooler with push-pull fan config
Single XFX 5850 1GB GDDR5 @ stock (my 2nd card was getting in the way of the mobo buttons)
Corsair TX 850 PSU
120GB Corsair Force GT SATA3 SSD (I'm using JUST the SSD; fresh install of W7 Ult x64 with nothing on it but P95 and monitoring tools like CPU-Z, HWMonitor)
Using the latestest chipset / LAN / USB drivers
CCC version 12.8
I've tried these settings in BIOS:
DRAM 1600MHz or 1333MHz (1333MHz as in the Fail-safe / MemOK! )
CPU/NB 2200MHz to 3000MHz
HT 2000MHzto 2200MHz
CPU Voltage from 1.38v to 1.48v
CPU/NB from 1.25v to 1.30v
HT from 1.25v to 1.2875v
NB: from 1.20v to 1.2875v
SB from 1.20v to 1.2875v
VDDR from 1.245v to 1.272v
I left CPU VDDA at the stock 2.5v
Left NB 1.8 at...1.8v
Had CPU LLC, NB LLC, VDDR (?) LLC on Auto, 50% and 100%
Left PCIE frequency and voltage and such on auto (100MHz, Auto, etc)
When Prime95 is running the Vcore will jump up to 1.52v (as seen on CPU-Z, HWMonitor and AIDA64).
The highest I've seen the CPU temp go up to so far is ~54*C while running Prime95.
Keep in mind, I didn't jump straight to 4.0GHz; I had it at 3.6GHz and 3.8GHz (of course at lower voltages) and it had no trouble running Prime95 and 3DMark11.
I'm unsure to push the NB, SB, HT, CPU/NB higher...close to 1.3v seems a bit high. Also, ~1.52v on the Vcore for 4GHz??
When I reached 4GHz by only adjusting the Bus, I used a bit lower voltages.
Somebody told me to bring the CPU VDDA up to 2.75v but...someone had told me when I did my first overclocking with my setup back in 2010/2011...
CPU VDDA is actually PLL, mine was running 2.70v [on my GA-890GPA-UD3H] when I blew caps and basically killed the CPU with p95, so keep that under 2.6v no matter what.
Last edited by -RASCAL-: 09-20-2012 at 08:31 PM.