46 ~ 48 C seems slighty high for you 2600xp+ cpu when its not even overclocked and idle. My barton 3000xp+ runs at about 39 C idle and about 45 C (Max) load so I dont see why your getting high temps. When mines overclocked to 2,308mhz my idle is about 40 C, load about 45, not really much difference. Whats the air flow like in your case?? As for getting past the 185mhz level you might just have reached the max for your chip, but you could try reducing the memory timings of the multiplyer if you changed them.
I have 2 80mm fans in the front taking air into the case and 2 80mm fans in the back taking air out of the case. The case itself is full tower and its very roomy.
My CPU's multiplier is locked. I tried to change the memory timings but it didn't help, I'm not sure how this is relevant because the memory is DDR400 and I'm running it in a lower speed, so why should I change the stock timings?
AMD Athlon (Barton) XP2600+
Abit AN7 Guru
ATI Radeon 9800 Pro
512MB DDR 400 Kingmax TinyBGA
Maxtor 120GB 7200RPM 8MB Cache S-ATA
Maxtor 40GB 7200RPM
ThermalTake Volcano 7+
What do you use to get your temperature? I suggest MotherBoard Monitor 5, it will give you "many" different reading, from sensor, diod, motherboard, etc... You might be surprised by how different are those reading.
From your phenomenon....your Vcore is too high,that's for sure,set it to default and increase your FSB,that maybe work...you've just said your Mul's locked?ANd try another kind of heatsink,that's important(Arctic silver3 mayne a good choice).You can't pass the 185MHz limit?That may be the max FSB your broad can reach.
That temp is normal considering the HSF involved. Its high but should still work. Whats the temp when at load? Try dropping the multiplier down a bit with the higher FSB to see if it will work. Just look at wat I had to do with my pig to break the 200 barrier.
Barton 2500+ @ 2200mhz (10x220 vcore @ 1.8)
Asus A7N8X Dlx 440 FSB
1gb Geil GD pc3500 Dual Channel (2-3-3-6)
Segata 80gb SATA 8.5ms seek
ATI Radeon 9800 Pro(420/720)
I just overclocked an xp2600 (TB core) from fsb 166 to fsb 180. I didn't have to adjust the vcore to get this speed and left it at default (1.65v i think it is). I now idle at 37degs and under load up to 45degs. Increasing the vcore only served to increase temp and didnt seem to increase stability for me, anyway.... Regardless I now have a chip running at 2.26mhz which i believe is around the xp3200 level??? which makes me happy enough but at a fsb of 185 yur at the limit.... or should it be able to push xp2600's further? I dont know just giving my story.
"Its only when you look at ants closely with a magnifying glass on a sunny day that you realise how often they burst into flames"