Hey S,
If there is only a slight performance gain from going CL3 to CL2 just leave it at CL3. It will be more stable at the slower latency. I have not had a problem running a CL3 at CL2, safety wise, but sometimes your system will just not boot, and the pc speaker will make that continuous beep. At that point I have had to clear the cmos and leave the setting at default or CL3. Is this safe? I really don't know for sure, should you try it? No, I wouldn't if I were in your shoes. At work, I hang with a group of like-minded nerds and geeks and we all tweak everything that we can(and some things that we can't). Yes, I have lost mobos and cpus trying to get a little better bench-marks. For everyone that I don't know, I tell them just to get a Dell......when something goes wrong, I say thats what Tech-support is for and the reason you got a Dell. Either you are a Tweaker or you aren't. Either you live safe & happy in your own little world(& I wish I could go back there) or you want to find out what you can really do at the limits.
Last thing, I don't know what your bios flashing procedure is like or if it is hard. You will most likely have to flash your bios to run a Athlon XP. My advice: do not get a Athlon XP, do not flash your bios, unless you absolutely have to. Do get a new Radeon 8500 and be happy. Good Luck!
Peace out............tile
P.S. I am running a Athlon XP 1700+ @1540mhz(140fsb) with a OCZ Goliath HSF @38C, 512mb of OCZ PC2400 DDR, Gainward GeForce3 Ti 200, EPoX 8KHA+ mobo, 4 front intake fans, 1 120mm side intake fan(over cpu), 2 rear exhaust fans, 2 80mm & 1 120mm exhaust fans on top of case. I am getting higher scores then evrybody at work, except one guy running his OC'ed P4 1.8ghz, who beats me with a higher SiSoft Sandra Memory Benchmark with his 512mb of Rambus ram, but I kick his ass on all other scores! To get even higher scores, I have set the FSB to 143. This OC'ing is not a good thing for your system life.........@138FSB, I lose my USB ports, and I have to constantly watch the CPU & mobo temps. But if you want to walk the walk, keep I mind all systems are going to react just a little different to OC'ing even with the same parts, and you could be just throwing your money away.
WHAT????? I CAN'T HEAR YOU OVER THE ROAR OF MY CASE FANS! YOU'LL HAVE TO SCREAM!