Hey all! Processor is barton 2500+, board is Asus A7N8X-X. I tried to change the cpu external freq. to 200 mhz, and it just hung. Had to manually reboot and change back to 166, so I assume it's locked. Do I need to change the jumper and vcore setting also? Thanks.
Instead of jumping straight from a 166 fsb to 200, try taking it a little slower: 166 to 175 to 185... You shouldn't need to adjust the Vcore setting until you start to reach the limit of standard overclocking. When you're system won't overclock on the default voltage any higher, you can try increasing the Voltage slightly to see if you get more headroom.
Also, because your system did not post at a 200fsb does not mean that your cpu is locked. If a processor is locked, it means that the cpu frequency multipliers are locked. To see if those are locked, you can keep your fsb steady while raising the multiplier by .5X or 1X in your BIOS. If your system boots up and displays the same cpu speed as before you changed the multiplier setting, then the multiplier change never went into effect and your processor is locked.
Thanks for your quick reply. Ok it appears the chip is locked. By inching my way up and down I was able to achieve 184 or 2.03 ghz it was unstable however and I bumped vcore up a notch. It is now flying....windows loaded at record speed. Can I continue to do this until it is unstable again and how far can you increase vcore settings before doing damage? Thanks
Also, do not forget that your memory timings need to be relaxed or throttle back the ratio of FSB to memory speed. This depends on if you are using PC2700 or PC3200 (or higher)
MF, I don't follow you on the throttling thing, could you guide me? Memory is 2- Corsair - PC3200 DDR 512MB 400MHz . As of now I've got it at 2.5 ghz, and it seems stable......can someone direct mo to a benchmarking site? Thanks
Ya, I know. I'm exec. chef for sports & entertainment company, and presently at a horse racing facility......hence the name. What did you do to fry your Sappire? I've got same one and I don't wanna do the same.
Since you have DDR400 then you should achieve 200FSB no problems.
- Have you flashed to the latest BIOS?
- Have you tried a vcore of 1.8V (max) ?
- Are your memory timings set correctly? Most of the time if you have not manually entered the timings the SPD auto-timing function will be incorrect.
- What are your system temperatures?
For benchmarking use the classic 3dMark series, SiSoft Sandra (I don't like it, Prime95 torture test, folding@home etc
As for the game issue, I can only say get the latest drivers, patches, coffee, DirectX, go-faster-racing-strips and pray.
AMD Mobile 2500+
A7N8X Deluxe rev2.0
1GB Corsair XMS PC2700
GeCube Radeon 9800 Pro
Seagate SATA 80GB
2xSegate 160GB in RAID0
Just because it loads Windows does not mean it is stable. When overclocking I usually used 3DMark2001se and a few timedemos in Quake3. If it made it past both these it was usually pretty stable. When I settled on a speed and voltage, I would then play something like UT2003 dmo for about an hour. Supprizingly Internet Explorer also would cause crashes when overclocking. It is can survive an hour of heavy gaming then a few hours of surfing, you should be good to go. I do similar tests when overclocking the video card.
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