- May 8, 2009
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I started this thread really to answer another OPs question about how well a Phenom II 940 Overclocks in comparison to a PII 550. Well I thought about it and it was just a click away. MY first remarks were for a previous 3DMARK Vantage score. This score was lacking in just the fact that it was using a GTX 280 and its synthetics were way to high.
PII940 @ 3.4Ghz Thermal Take Spin-Q cooled
GA-MA790x-UD4P Motherboard
4 Gigs DDR2 XMS2 Extreme 800
GTX 280 @ 666 MHZ
A-Power 850W Power Supply
I went on to install a fresh copy of Vista X64 (my other install was all cracked up.) Since the time of the original bench with the GTX 280 I have upgraded to a Diamond ATI Radeon HD4870x2. Its OCed clocks are 800Mhz core and 955Mhz RAM.
So the following tests will be done @ 3.4, 3.6, 3.7, 3.8 Ghz On the cpu and stock clocks on the Graphics card. I am fairly certain I can obtain certain I can obtain 3.8 on Air.
My PII Runs at 3.4 most of the time and so I left it there and ran a bench With Vantage. To run stable here all that is required is raising the Multiplier to a 17x and leaving the HT ref. clock at 200, this attains the 3400Mhz . I also raise the cpu core voltage to 1.375 at this point, and upped the HT to 2000 Mhz. Other than that nothing else has changed from stock.
After seeing these results I imediately I OCed to 3.6Ghz. I Raised the Multiplier to 18x and upped the voltage to 1.40v. I had stability issues With HT at 2000Mhz so dropped it to 1800Mhz and ran the next bench.
Next I Raised to the Clocks again this time to 3.8Ghz by only raising Multi to 19x. This caused severe problems and it would not bench..... BSOD!
So I lowered it to an 18.5x Multi and raised corev to 1.4125v, BSOD. Thought about it for a moment and "OH YEAH" I forgot that it doesnt like 1800mhz HT at this clock it must have 2000Mhz HT to be stable. I also wanted to try stock diamond speeds on the HD 4870x2. It worked! I benched here.
Thats all for tonight people! Ill do some more tomorrow!
PII940 @ 3.4Ghz Thermal Take Spin-Q cooled
GA-MA790x-UD4P Motherboard
4 Gigs DDR2 XMS2 Extreme 800
GTX 280 @ 666 MHZ
A-Power 850W Power Supply
I went on to install a fresh copy of Vista X64 (my other install was all cracked up.) Since the time of the original bench with the GTX 280 I have upgraded to a Diamond ATI Radeon HD4870x2. Its OCed clocks are 800Mhz core and 955Mhz RAM.
So the following tests will be done @ 3.4, 3.6, 3.7, 3.8 Ghz On the cpu and stock clocks on the Graphics card. I am fairly certain I can obtain certain I can obtain 3.8 on Air.
My PII Runs at 3.4 most of the time and so I left it there and ran a bench With Vantage. To run stable here all that is required is raising the Multiplier to a 17x and leaving the HT ref. clock at 200, this attains the 3400Mhz . I also raise the cpu core voltage to 1.375 at this point, and upped the HT to 2000 Mhz. Other than that nothing else has changed from stock.
After seeing these results I imediately I OCed to 3.6Ghz. I Raised the Multiplier to 18x and upped the voltage to 1.40v. I had stability issues With HT at 2000Mhz so dropped it to 1800Mhz and ran the next bench.
Next I Raised to the Clocks again this time to 3.8Ghz by only raising Multi to 19x. This caused severe problems and it would not bench..... BSOD!
So I lowered it to an 18.5x Multi and raised corev to 1.4125v, BSOD. Thought about it for a moment and "OH YEAH" I forgot that it doesnt like 1800mhz HT at this clock it must have 2000Mhz HT to be stable. I also wanted to try stock diamond speeds on the HD 4870x2. It worked! I benched here.
Thats all for tonight people! Ill do some more tomorrow!
:lol: :lol:
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