Abit KR7A-133, 17 x and 18 x multipliers availavble now.

[maluckey]

Good news for all with the KR7A-133 and the xp 2100+!!!

I just confirmed through testing that without unlocking anything more than the voltage bridge on the CPU (to allow additional voltage), that 18 x and 19 x multipliers are available. This should work for any CPU, T-Bred XP 2100+ and up as well! Any CPU over 12.5 base multi is set to "hi" range by default, and this trick should work. It might not work on the 1700+ (multiplier is "lo" range), but I would like someone to try it on a KR7A to see anyways if someone gets the time.

All you need to do is to set the bios to "User Define", and 9.5 x for 18x multi, and 9x for 17 x multi. that translates to 2.4 Ghz, and 2.26 Ghz respectively at 133 Mhz FSB. I ran out of steam at 17 x 147 Mhz FSB =2.50 Ghz, but did not run stability testing. It was able to run UT 2003 for two rounds, before I had to go to work though.

 

[myocardia]

Dang, man, nice OC! I can't believe anyone can get that kind of speed & FSB out of an old motherboard like that. Of course, I still think you should upgrade to an nForce2 board, so you can have a sychronous 400+mhz fsb... I read somewhere that, with an Athlon, almost all of the gain that you get by overclocking is obliterated by not having the ram and the processor synchronized... But, it's still an amazing OC for such an old board!

 

[maluckey]

I have gone as high as 181/76.7 FPS in Unreal Tournament flyby/botmatch benchmarks with a Ti-4200 and this same mobo at 174 x 13 = 2262 Mhz. I haven't seen many higher results with a TI-4200. It's a badge of honor that I have, to run the old stuff till it no longer can serve a useful purpose.

I have three mobos at the moment, and the KR7A-133 is the most fun to OC! I should be joining the 21st century later this year when 64 bit computing goes fully on line. Until then, I hope to hit 213 Mhz FSB next week, with faster RAM than the PC-2700 that I have at the moment.

The 2.5 Ghz was not stability tested, but at 2.4 Ghz, it is Prime95 stable indefinitely.