I had a generic m810 pcchips motherboard with a tbred
512mb
64mb onboard video
120gb hd

I kept Windows 98ae as my main box through 2016 when everything online broke

Fastest PC I ever had or still have running Windows 98 (either edition)...

Asus P2B 440BX
Intel Pentium III 600MHz (Katmai, 100MHz FSB, 2.0v, Slot 1)
256MB PC-100 SDRAM
Diamond Viper V770 RIVA TNT2 32MB AGP
STB V2-1000 Voodoo² 12MB PCI
STB V2-1000 Voodoo² 12MB PCI
Creative Labs Sound Blaster AWE64 Standard ISA
10/100 PCI Ethernet
Iomega ZIP100 internal ATA

Anything I had that was faster than this ran Windows XP instead.

KM400 based board
Socket A Sempron 3000
512mb RAM
R8500LE 64mb
Matrox m3d
SB Live 5.1
Audigy 2

I decided to have a truely overpowered DOS/Win98 system, a system that could even still play many DOS games via SB16 emulation:

Asus A8V Deluxe - Socket 939.
Athlon 64 3800 Processor (2.4ghz real frequency)
512meg DDR (running 400mhz, 2.5 cas, T1 command rate)
Gainward Nvidia FX5900XT 128meg
Creative Audigy Card
250gb Western Digital 7200 rpm drive
Samsung DVD-RW drive
XFX 450W PSU.

Going with a VIA based board is important to get the DOS drivers working for the Audigy working. I have also never had a Socket 939 motherboard before, so this is fun for me. Another cool thing is the BIOS will map USB keys as hard drives automatically, and then you can access the contents of these USB keys in Pure DOS mode as though they were another hard drive.

Compared to P4 systems I have assembled, this only runs rather cool and comfortably in comparison.

Muh my fastest W98 system would be this:

-Pentium 133 (might upgrade to K6-II or 233MMX since my mobo supports K6 and MMX CPUs... Weird)
-Shuttle HOT-555A (quite a big standard VX mobo that just works, quite the reliable workhorse, alas mine is really boycotting SDRAM so I'm leaving it with the EDO SIMMs that it came with)
RAM: 80 megabytes EDO (I do have SDRAM on hand but for some reason the mobo only recognizes half of the capacity of every stick I put in...)
Graphics: S3 Trio64V2-DX (really needs a VRAM upgrade...)
Sound: Creative ViBRA 16 (with CQM... Blergh ! 😵) that's the only ISA soundcard I have 🙁 but it is still better than the SB 128PCI's horrible OPL3 emulation 😵

3.2ghz pentium 4 socket 478 Prescott
128mb agp 8x ATI/AMD chip based gamebuster GPU (passive cooled)
Biostar P4TSV motherboard
2gb pc133 gaming SDRAM (running without paging thanks to public release of R. Loew's patch)
1 tb 7200 RPM SATA running with R. Loew native SATA patch (formatted fat32 single partition with his utility.)
I put in CPU driver from windows xp to accomodate speedstep tech of this pentium 4 it also runs cooler with it.
1000 watt p4 era correct gaming PSU
No right click refresh on desktop this baby screams of real hardware bling. The ram has gold plated heat spreaders and I never overclock my classics.
Surprisingly dirt cheap to build but took years to source out parts i only go for new old stock or my own legacy reserve.
I got final fantasy 8 pc version to play on the old 748 system but it was dead motherboard it looked new too blew its old regulators so i figured if i was gonna play old games again
or mess with retro sound and video better off getting the best I can and use what i know since i lived that era i know the hurdles. (and a brand new WHOPPER GPU)
Ths would be one of the worlds fastest windows 98 compatible survivors and with SATA II 1tb and 2gb ram running native without emulation I bet the benchmarks would raise eyebrows except the GPU but nothings perfect.
Have tested with Millennium ,xp as well they're all just as good except xp has officially signed drivers for gpu available as ATI/AMD decided to end access to win 9x signed drivers they did release non signed drivers after for win98/me end of support cycle.
The Specs would get attenton on Ebay but if it were to go for sale it would be really expensive I couldn't build another like this it'd be a waste of life waiting for the parts.
I have used the GPU on my Abit VP6 as it has 4x sideband AGP that system runs 98 as well but its SMP system means best running XP and I use that system for music synthesizer fun and karaoke. A temporary GPU solution for this topic as i have a 256mb Nvidia gpu somewhere but gotta get drivers!.
Have a modded startup logo shows the more modern windows logo the dude who made it deserves an award!
Expect screenies 😁

I used to know how to mod the flash screen, think it's an RLE file you can actually force paint to open. I thought it was Funny to have a Win 3.11 Windows 95 Windows 98! scrawled on the old win3 one.

I guess the fastest I've got 98 "on" was a little ripper set up with an applebred doing 2.4Ghz, Ti4200, 1GB, but haven't run that one in a while it might have forgot it's settings and need a general spruce up. So the fastest machine most recently running it is a PII 366, 128MB which it's pretty good on.

PII 366 mobile- That is the I heard it existed but never have seen one category

Between Intel and AMD 366mhz has to be the least common clocking

333/350/400 common

Yup it's in the Compaq Armada 1750 notebook, which there's been recent discussion about here... Compaq armada 1750 and come to think of it , I think the only other CPU I've come across that's a 366 is Celerons.

At one point, I ran Windows 98 on a Dell Optiplex GX260 with the following specifications:
2.4GHz Intel Pentium 4 (Socket 478)
512MB DDR-333 SDRAM
nVidia Geforce FX 5200 128MB AGP
40GB IDE hard drive

I still have its motherboard, though it needs a recap. I do have a few computers that are more advanced than that with Windows 98 support (most notably my Athlon 64 S939 rig), I might try to install Windows 98SE on one of those computers eventually, just to see how it runs.

KCompRoom2000 wrote on 2021-06-09, 09:22:

At one point, I ran Windows 98 on a Dell Optiplex GX260 with the following specifications: 2.4GHz Intel Pentium 4 (Socket 478) 5 […]
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At one point, I ran Windows 98 on a Dell Optiplex GX260 with the following specifications:
2.4GHz Intel Pentium 4 (Socket 478)
512MB DDR-333 SDRAM
nVidia Geforce FX 5200 128MB AGP
40GB IDE hard drive

I still have its motherboard, though it needs a recap. I do have a few computers that are more advanced than that with Windows 98 support (most notably my Athlon 64 S939 rig), I might try to install Windows 98SE on one of those computers eventually, just to see how it runs.

if the caps are leaking remove them. if not the corosion will damage it

Does Windows Me counts or no 😀?

I just put together the following:
- Asus P5P800 (LGA775 Intel 865PE)
- Pentium 4 HT 670 3.8GHz (LGA775 Prescott 2M)
- Nvidia GeForce FX 5950 Ultra (Zalman FS-V7 cooler)
- 3dfx Voodoo5 55000 PCI
- Aureal Vortex 2 8830 (Diamond Monster Sound MX300)
- Sound Blaster Audigy 2 ZS
- Yamaha PCI YMF724F
- 512MB DDR400 CL2 Dual-channel RAM
- SATA SSD for storage
- IDE Plextor PX-760A DVD±RW drive
- Gotek SFR1M44-U100 floppy emulator
- Cooler Master Elite 361 case
- Seasonic GX-650 power supply
- 1x Noctua NF-S12A FLX side case fan
- 3x Noctua NF-A8 FLX front/back case fans
- Zalman CNPS7700-CU CPU cooler
- Roland SC-88 synth
- LaCie Electron 22blue IV CRT

It seems to be running great so far!

Pentium M Dothan 750 overclocked to 2.4 Ghz, 2GB RAM, Asus P4P800 SE+Asus CT-479, Geforce 7600 GT AGP.

Core 2 Duo E8600 @4.8GHz
ASUS P5Q3 motherboard
2x 2GB DDR3 @ 1333MHz
7900GT 256MB stock clocks
CMI8738 based sound card
120GB SATA SSD
Windows 98 SE with all updates, patches, fixes and drivers needed, everything works as expected (USB 2.0, SATA II, PCIe 1.1)

Main thread about that system/benchmarks: (NEW RECORD) "Ultimate" Windows 98 Gaming PC build 7900GTX + 4.89GHz E8600 + 2GB DDR2 1066MHz + ASUS Maximus II Formula