Here is a question I have been asked and I'm stumped. Anyone got any ideas? Thanks
"I have a system based around an AMD K62 500mhz chip on an ali5 chipset mbd (Microstar MS-5169). I've recently installed Win2k Pro (and SP2), and now find that Windows seems to be running the CPU at half its speed: 250mhz. Msinfo32 lists the CPU speed as 250mhz, and SiSoft Sandra 2001 & 3DMark2000 both concur (when I run 3DMark, I can *see* how slow it is...). Bizarrely enough, DXdiag gives the correct CPU speed, but like I said, the system is visibly a lot slower.
This is not a BIOS or a motherboard configuration issue - I have the latest bios and have tweaked the all the settings endlessly. Also the CPU is listed correctly by the mbd in the boot-up screens. It's not the chip itself either, since I have an old K62 350 lying around which produces the same result (i.e. listed as 175mhz in Win2k). Furthermore, the system is a dual-boot with Win98, and the CPU is listed correctly under that O/S. However, I do have to leave the on-board second level cache disabled in the BIOS otherwise the system is just chronically unstable in any O/S (well documented bug with the MS-5169 board), but surely that can't be responsible, can it?
So I'm guessing it's a compatibility problem between Win2k and either the AMD K62, or the ali5 chipset, but have never seen it documented by Microsoft, AMD or Acer Labs. I have seen a few other posts on various forums reporting the same symptoms, all from people with K62 chips, but never any solutions.
So, what I'd like to know is has anyone encountered this before, and more importantly, does anyone know of a fix?!
If it were the L2 cache, how come Win98 runs faster & benchmarks fine?"
Thanks
"I have a system based around an AMD K62 500mhz chip on an ali5 chipset mbd (Microstar MS-5169). I've recently installed Win2k Pro (and SP2), and now find that Windows seems to be running the CPU at half its speed: 250mhz. Msinfo32 lists the CPU speed as 250mhz, and SiSoft Sandra 2001 & 3DMark2000 both concur (when I run 3DMark, I can *see* how slow it is...). Bizarrely enough, DXdiag gives the correct CPU speed, but like I said, the system is visibly a lot slower.
This is not a BIOS or a motherboard configuration issue - I have the latest bios and have tweaked the all the settings endlessly. Also the CPU is listed correctly by the mbd in the boot-up screens. It's not the chip itself either, since I have an old K62 350 lying around which produces the same result (i.e. listed as 175mhz in Win2k). Furthermore, the system is a dual-boot with Win98, and the CPU is listed correctly under that O/S. However, I do have to leave the on-board second level cache disabled in the BIOS otherwise the system is just chronically unstable in any O/S (well documented bug with the MS-5169 board), but surely that can't be responsible, can it?
So I'm guessing it's a compatibility problem between Win2k and either the AMD K62, or the ali5 chipset, but have never seen it documented by Microsoft, AMD or Acer Labs. I have seen a few other posts on various forums reporting the same symptoms, all from people with K62 chips, but never any solutions.
So, what I'd like to know is has anyone encountered this before, and more importantly, does anyone know of a fix?!
If it were the L2 cache, how come Win98 runs faster & benchmarks fine?"
Thanks
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