So I'm building a new Windows 98 box just to play around with, and I'm looking for some resources about its limits, and I found this forum. Anyway, I need to pick up an LGA 775/Socket T chip, and I was just wondering if Windows 98 SE supported all processor speeds

Also, does it have support for HyperThreading or Celeron D?

Thanks in advance you guys

98se doesnt support but as far as i know there is now cpu speed limit
98se can see multiple cpus or cores it can only see 1 cpu

Nope.

Windows 9x does not support Hyperthreading or Multi Core/Processors.

However it may work on the system if you disable HT or Multiple processors in the bios.

im pretty sure i ran 98se on a computer which had ht enabled but you can disable it anyway

I ran a Windows ME system with HT enabled, No diffrence in speed.

i didnt mean speed difference because i doubt there is any, what i meant was that 98se didnt crash when i tried it on a computer with ht enabled

That's right. W9x runs fine on a multiprocessor (multicore,hyperthreading) system. But it will only detect and use 1 processor.

Have a look here > http://support.microsoft.com/kb/312108/en-us

There is a problem with NDIS with CPU speeds of 2.2gHz or faster. MS USED to publish a patch, which I downloaded and subsequently lost
(as my CPU is only 500 MHz it probably got dumped in the 6 monthly clearout) but MS now claim that there is no fix, probably they lost it as well.

that problem is for 98 fe and 95 not 98se, ive definatly run 98se on a p4 2.6ghz anyway

Sweet, thanks. I'm actually picking up a P4 2.6GHz

My motherboard tops out at 2.8, but I can't find one for cheap. The 2.6 I found for around a hundred, and the 2.8s I found are around two hundred. Bah!

In my thinking many of answer which has come to this question has been wrong.

Speed of CPU problem on Windows 98 SE do not exist. I can say that looking my PC.

I having Core 2 Duo E 4300 with 1 GB RAM and everything (Windows 98 SE and all programs) is working without problems

This patch is available here:
http://www.mdgx.com/web.htm#W98

* Microsoft Windows 98 CPU > 2.1 GHz NDIS Error NDIS.VXD 4.10.2000 Fix:
http://support.microsoft.com/?id=312108
Direct download [213 KB, English]:
http://www.autourdupc.com/Logiciel/WIN98/S.../312108USA8.EXE

HTH [Hope This Helps]

not quite correct, awergh. The patch is for Win98 FE ONLY. There is NO Win95 patch. The Resolution section in MS article 312108 now sounds convoluted. I know there was a 98fe hotfix for it but NO 95 hotfix was available.
Win98 SE already supports 2.1 GHz & faster CPUs w/out the patch so the problem in MS article 312108 is already resolved in 98se

what i meant was that the error effect 95 and 98fe as it stated at the bottom of the article