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Temps and voltage on my Phenom II x4 940

post #1 of 5
Thread Starter 
So, i have a Phenom II 940, and naturally i have overclocked it. Now, the board that i have isnt exactly what i would refer to as an overclockers board, but it can handle my chip well enough to not explode (thank you VRM protection).

Now, since this is a C2 stepping chip and i am running on a less than decent board let alone lack of high grade cooling (Xigmatek Gaia in push/pull mixed fans), i can expect to not make it to anywhere near 4ghz. Right now i have it sitting at 3.6ghz 1.472v (it bounces between 1.472 and 1.488v) , entirely a multiplier overclock, and the CPU-NB is at stock. It has folding on it for about 4 hours now and the highest ive seen it on this load is 56C. I am wondering if those temps are fine at my current voltage level, and on top of that, how much higher i can crank things before i seriously start running into problems.

Tl;dr
Are my temps and voltages fine for extended use (barring extremely floating point heavy tests)?
AND
How much higher can i push things before i either run into thermal limits or i trip VRM protection? I am aware i need to get a heatsink for the VRMs but that needs to wait until i can sell some things off.
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post #2 of 5
For the Phenom II 940, it's 1.55v and 55'C max.

I'd leave it there, and 3.6GHz is probably all she wrote. You might squeeze 3.7Ghz with a couple tweaks, but possibly you'll need near 1.55v for that and obviously the temps will shoot over 60'C load.
post #3 of 5
Thread Starter 
Quote:
Originally Posted by MrTOOSHORT View Post

For the Phenom II 940, it's 1.55v and 55'C max.

I'd leave it there, and 3.6GHz is probably all she wrote. You might squeeze 3.7Ghz with a couple tweaks, but possibly you'll need near 1.55v for that and obviously the temps will shoot over 60'C load.
Ive already had it well over 60C (64C) during floating point heavy testing, specifically AIDA64's CPU floating point stress test, and it was stable at that temp. Correct me if i am wrong, but isnt 55C the "stability" line and 62C the "overheat" limit? What ive been able to find on the net seems to indicate that once i go significantly over 55C stability can become questionable due to AMD's manufacturing process.
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post #4 of 5
Keep in mind that while OCing temperature readings can be inaccurate. Also temps can can jump suddenly when volts are pushed past default. One moment at standard voltage it's 50, ad 0.05v and it may jump right to 60c. Also when OCing it's not only the CPU that heats up, got to keep close watch on other temps, usually they are the ones that can limit OC before you hit limit on CPU.
post #5 of 5
My C2 940 pushes close to 60C at 3.4, maybe its my case or fan setup, but I couldn't be bothered going any further in the end. Not worth the heat and voltage required to push any higher than 3.5. I instead pushed the NB-CPU up to 2.4 - makes a noticeable difference in everything. I can hit 2.6 on the NB with FSB, but then I can't use the sleep function with my mobo, so also called it a day there too.
 
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13" beast
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HTPC
(8 items)
 
CPUMotherboardGraphicsRAM
Lapped X4 940BE @ 3.5Ghz / NB @ 2.4GHz Biostar TA790GX 128M 1GB HD6950 @ 965/1360 (1.26V) Kingston Hyper-X 2GB x 4, 1066 MHz 5-5-5-15-22 ... 
Hard DriveOptical DriveCoolingOS
Crucial M4 64GB SSD, WD 640GB x 2 none Scythe Katana 3 Win7 64bit 
MonitorKeyboardPowerCase
Dell 24", Samsung 17" x 2 Logitech Illuminated Antec Earthwatts 750W Antec 300 
CPUGraphicsRAMHard Drive
Intel Core i5 2410M @ 2.3 Ghz stock Intel HD Graphics 3000 4GB 500 GB 
OSMonitor
Windows 7 WXGA (1366x768) 
CPUMotherboardGraphicsRAM
Athlon II X2 245 GA-MA785GM-UD2H Onboard HD4200 Kingston 2GB 
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