So, my boss gets a new system and is talking to me about overclocking it... plus we get new development boxes and since we picked all the components ourselves with the intent of overclocking... so anyway I had my system set up fine 'n dandy and now I've got the OC bug again. So here's where I started and what I did:
The system: Epox 8RDA+ motherboard, rev 1.1; Athlon XP 2500+ (barton core, unlocked); Apacer 2x 256MB PC3200 DDR400
- First, got the latest rev of Sandra and baselined my system. Currently running 210FSB, stock voltages, 3-3-3-6 on my memory.
- Changed memory to 3-3-3-11. That improved my memory bandwidth all of .5%.
- At 223Mhz FSB, W2K blue-screened during boot. I bumped Vdimm from 2.63 to 2.77 gigawatts. Or is that volts? :D
- At 228Mhz FSB, W2K blue-screened during boot again. I dropped back to 225 for stability's sake.
Temperatures are fine. Now I'm wondering... how do I take it to the next level? Should I increase Vdimm again to 2.90? What about changing memory timings again, say 3-3-4-11 or 3-4-3-11 or 3-4-4-11? Perhaps I should increase CPU or chipset voltage?
I especially don't care to break anything, most especially my unlocked Barton. But if I can toss in a few more tweaks with a comfortable safety margin, I'm willing to give it a try. Any thoughts you all have are appreciated. Thanks!
Oh, here are the numbers from Sandra's combined performance index wizard:
Initial (FSB 210):
CPU Arith: 11881
CPU Multimedia: 43140
Memory: 5773
Final (FSB 225, Vdimm=2.77):
CPU Arith: 12705 (6.94%)
CPU Multimedia: 46137 (6.95%)
Memory: 6595 (14.24%)
The percentage values are percent improvement, in other words (new - original) / original.
Update: After further testing it appears I'm not entirely stable at 225Mhz. I'm going to drop down to 220Mhz. But I may go back and try to play with memory timings or voltages... what's everyone's thoughts?
Update 2: I boosted Vcore from 1.65 to 1.7. The system now appears to be stable at 225. At 230, I got a blue screen while booting. Temps seem alright if not great, 43 idle and 48 loaded.
Oh heck, I'm gonna try increasing Vcore again and see if I can get 230 stable. I'll be back :).
Update 3: Okay, going from 1.7 to 1.75 almost worked. I could boot, but running anything CPU-intensive crashed the system. I'm also running 46 idle.
So... what can I do to boot at 230? Bump memory voltage? CPU voltage again (yeesh)? Get some better cooling?
The system: Epox 8RDA+ motherboard, rev 1.1; Athlon XP 2500+ (barton core, unlocked); Apacer 2x 256MB PC3200 DDR400
- First, got the latest rev of Sandra and baselined my system. Currently running 210FSB, stock voltages, 3-3-3-6 on my memory.
- Changed memory to 3-3-3-11. That improved my memory bandwidth all of .5%.
- At 223Mhz FSB, W2K blue-screened during boot. I bumped Vdimm from 2.63 to 2.77 gigawatts. Or is that volts? :D
- At 228Mhz FSB, W2K blue-screened during boot again. I dropped back to 225 for stability's sake.
Temperatures are fine. Now I'm wondering... how do I take it to the next level? Should I increase Vdimm again to 2.90? What about changing memory timings again, say 3-3-4-11 or 3-4-3-11 or 3-4-4-11? Perhaps I should increase CPU or chipset voltage?
I especially don't care to break anything, most especially my unlocked Barton. But if I can toss in a few more tweaks with a comfortable safety margin, I'm willing to give it a try. Any thoughts you all have are appreciated. Thanks!
Oh, here are the numbers from Sandra's combined performance index wizard:
Initial (FSB 210):
CPU Arith: 11881
CPU Multimedia: 43140
Memory: 5773
Final (FSB 225, Vdimm=2.77):
CPU Arith: 12705 (6.94%)
CPU Multimedia: 46137 (6.95%)
Memory: 6595 (14.24%)
The percentage values are percent improvement, in other words (new - original) / original.
Update: After further testing it appears I'm not entirely stable at 225Mhz. I'm going to drop down to 220Mhz. But I may go back and try to play with memory timings or voltages... what's everyone's thoughts?
Update 2: I boosted Vcore from 1.65 to 1.7. The system now appears to be stable at 225. At 230, I got a blue screen while booting. Temps seem alright if not great, 43 idle and 48 loaded.
Oh heck, I'm gonna try increasing Vcore again and see if I can get 230 stable. I'll be back :).
Update 3: Okay, going from 1.7 to 1.75 almost worked. I could boot, but running anything CPU-intensive crashed the system. I'm also running 46 idle.
So... what can I do to boot at 230? Bump memory voltage? CPU voltage again (yeesh)? Get some better cooling?
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