I tried overclocking my athlon 64 3500+ 90nm (winchester core) with both an Abit AV8 and a MSI neo2 platinum motherboard. On the AV8, I was able to get it to do 261x10 at 1.55V (I think I set the memory to the lowest speed using a divider). Prime95's small FFT test ran without errors for 22 hours at this setting. The uGuru reported the temp as 61, which was a little high but since the XP-90 HSF was still pretty cool I figured the bios temp is just off.
After I was satisfied with my CPU hitting 2.61ghz, I started testing the other parts of the system and was soon having trouble running my TCCD memory (patriot PC3200+XBL) on the Abit AV8 at 261Mhz. After reading on the net that Abit AV8 has mixed results with TCCD memory, I swaped it for an MSI neo2 platinum which people seem to love with winchesters and TCCD memory. Much to my surprise, putting my CPU into this board and it won't even post at 261x10 at 1.55V (I used the bios setting of 8.3% + 1.425v). I then decided to reinvestigate the CPU limit with my motherboard and found the highest speed I could get it to stablize is about 2.5Ghz at 1.44V. Increasing the voltage to 1.5 and higher would kick temperature into the 65-70C range and prime would fail for 2.5Ghz. The HSF does not get hot.
I was very surprised at this result. The only positive thing that came out of the swap for an MSI is that I was finally able to prime 261x8 at 1:1, proving that the MSI board work with my memory better.
Has anyone seen anything like this?
Edit: I should mention the other parts of my system:
PSU: 500W Mad Dog surepower
Video: PNY 6800GT @ stock speed
Thermal: XP-90, Arctic Silver Ceremique, 43CFM 92mm fan
The 261 FSB tests were done with 3X HTT on both boards.
After I was satisfied with my CPU hitting 2.61ghz, I started testing the other parts of the system and was soon having trouble running my TCCD memory (patriot PC3200+XBL) on the Abit AV8 at 261Mhz. After reading on the net that Abit AV8 has mixed results with TCCD memory, I swaped it for an MSI neo2 platinum which people seem to love with winchesters and TCCD memory. Much to my surprise, putting my CPU into this board and it won't even post at 261x10 at 1.55V (I used the bios setting of 8.3% + 1.425v). I then decided to reinvestigate the CPU limit with my motherboard and found the highest speed I could get it to stablize is about 2.5Ghz at 1.44V. Increasing the voltage to 1.5 and higher would kick temperature into the 65-70C range and prime would fail for 2.5Ghz. The HSF does not get hot.
I was very surprised at this result. The only positive thing that came out of the swap for an MSI is that I was finally able to prime 261x8 at 1:1, proving that the MSI board work with my memory better.
Has anyone seen anything like this?
Edit: I should mention the other parts of my system:
PSU: 500W Mad Dog surepower
Video: PNY 6800GT @ stock speed
Thermal: XP-90, Arctic Silver Ceremique, 43CFM 92mm fan
The 261 FSB tests were done with 3X HTT on both boards.
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