Having built a number of 386 and 486 machines, my favorite for that era is my 486 DX-33. It's slow enough to handle speed sensitive games of that era and can be throttled down to 386 and even 286 speeds as needed. At the same time, it's fast enough that early 90s games don't feel sluggish. And for some games (Warcraft, Theme Park), it's an ideal sweet spot for performance.

Video card I went with is a 1MB VLB card (ET4000/W32P). Whether you go VLB or PCI will depend on the motherboard you end up with.

For sound, I would go with a basic SB Pro compatible card like a Yamaha YMF-7xxx or ESS based card. These will typically have cleaner audio output and be cheaper and more available than an authentic Sound Blaster. You can always add sound cards if you want other supported sound devices.

8MB of RAM will be more than enough. There aren't really many games or applications that can use more for a system of that era.

Installing Windows 3.1 won't hurt anything. It's an OS shell environment that runs on top of DOS, so it doesn't affect the underlying DOS install. I would only install it if there are specific Win 3.1 games or applications you want to use though.

Insofar faster systems like a Pentium, unless you are targeting specific speed sensitive games or hardware from the Pentium era, I would go with a 486 instead to cover the late 80s to early 90s.

After many many builds, i think the best one i ever made is a pentium 200 in a Triton 1 Full Yes INTEL 82430FX board with MrBIOS, 32mb ram, AWE64 and a S3 Virge

With L1 disabled L2 enabled is similar to DX2-66, with L1 and L2 disabled i can reach 386SX40/ DX25 levels

Once in SX40 speeds, with software slowdown I can reach XT levels without any problem, game like zaxxon works like a charm

And because S3 card compatibility, you can connect your computer to a CRT TV using RGB, load VGATV from coelho https://mirrors.arcadecontrols.com/VGATV/pwp. … bo.pt/pscoelho/ and enjoy CGA and EGA modes in 15khz if you want more similar true old experiencie for this era games, or use advance cab utils to do some great tricks to VGA/VESA modes

Shponglefan wrote on 2025-12-27, 22:02:

Video card I went with is a 1MB VLB card (ET4000/WP32). Whether you go VLB or PCI will depend on the motherboard you end up with.

On my test, too many incompatibilities to recommend this card

theelf wrote on 2025-12-27, 22:28:

Shponglefan wrote on 2025-12-27, 22:02:

Video card I went with is a 1MB VLB card (ET4000/WP32). Whether you go VLB or PCI will depend on the motherboard you end up with.

On my test, too many incompatibilities to recommend this card

I've tested dozens of games on this system and haven't run into any incompatibilities.

What incompatibilities are you referring to?

Shponglefan wrote on 2025-12-27, 22:33:

theelf wrote on 2025-12-27, 22:28:

Shponglefan wrote on 2025-12-27, 22:02:

Video card I went with is a 1MB VLB card (ET4000/WP32). Whether you go VLB or PCI will depend on the motherboard you end up with.

On my test, too many incompatibilities to recommend this card

I've tested dozens of games on this system and haven't run into any incompatibilities.

What incompatibilities have you found?

Check Dangerous Dave haunted mansion for example, Biomenace, another came to my mind, but more apogee games have problem with ET4000, i found in some ET4000 cards problems too with Commander keen games, in one of my cards svga option did not fix , Pinball Illusions too, dont remember fantasies

I think biomenace have a -safe command... or is dangerous dave? i dont remember, but not all games have the fix

Sorry long time ago did not test the tseng, i have 4 or 5 boards, ISA and VLB, and all give me some troubles here and there, i cant remember all incompatibilities, but mostly are in EGA games

Nicolas 2000 wrote on 2025-12-27, 20:10:

The oldest PC I currently have is a Pentium III 1000 running W98. As it has a separate DOS mode, I thought I was golden regardin […]
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The oldest PC I currently have is a Pentium III 1000 running W98. As it has a separate DOS mode, I thought I was golden regarding compatibility of DOS games. I was mistaken. While things like DOOM, Wolf3D and the last gen of DOS compatible games run fine on that PC, it fails to boot F15 Strike Eagle II and most of the games on those "500 DOS games!" CD's.

I am not looking to play some very old CPU speed dependent games nor very late 3Dfx stuff or anything. I am looking more to play the common 386-486 era DOS games without hassle. Larry, Stunts, F15, Keen, Epyx Pinball, Lemmings, Volfied...

In a previous life I had a 386-25mhz. I found it too slow for many of those games, so preferably more oomph but not so much that it hurts compatibility.

Would a 468 40 or 50mhz be a solid choice? Are graphics cards picky, or would a typical 1MB VGA card from the era do? How about sound card, is it SB or nothing, or can you safely go to other brands such as Philips based stuff? Any lower or upper RAM limits to take into account, eg is 16MB too much for some of the games I'm targetting?

Would it be safer to go for an early Pentium (60, 75) so it is powerful enough for stuff like Warcraft II, or does that risk kicking out the other end such as F15-II?

Does it hurt anything to have W3.1 installed or is it better to keep it strictly DOS?

You're trying to bridge a bit of a gap there with a system that can play games like Warcraft II (1995) and F15-II (1989), so you're probably going to have to do some speed throttling of some sort.

A lot of people here recommend the P200MMX build (or similar) ( https://www.philscomputerlab.com/136-in-1-pentium-mmx.html ) which can be throttled down to about 386-DX33 speeds, but that might be too fast for what you're looking for. As theelf says, you could use software slowdown beyond that, though. I prefer that build because I prefer later era DOS games, and the P200MMX makes a big difference there.

theelf wrote on 2025-12-27, 22:43:

Check Dangerous Dave haunted mansion for example, Biomenace, another came to my mind, but more apogee games have problem with ET4000, i found in some ET4000 cards problems too with Commander keen games, in one of my cards svga option did not fix , Pinball Illusions too, dont remember fantasies

I just tested Bio Menace, Commander Keen 1 and Commander Keen 4. Commander Keen 1 and Bio Menace worked fine. Commander Keen 4 did need the SVGA compatibility option checked, but it worked fine with that enabled.

I checked other EGA games I've played on this system. Those have included Arkanoid 2 and various Sierra games. No issues with any of those.

Shponglefan wrote on 2025-12-27, 23:02:

theelf wrote on 2025-12-27, 22:43:

Check Dangerous Dave haunted mansion for example, Biomenace, another came to my mind, but more apogee games have problem with ET4000, i found in some ET4000 cards problems too with Commander keen games, in one of my cards svga option did not fix , Pinball Illusions too, dont remember fantasies

I just tested Bio Menace, Commander Keen 1 and Commander Keen 4. Commander Keen 1 and Biomenace worked fine. Commander Keen 4 did need the SVGA compatibility option checked, but it worked fine with that enabled.

I checked other EGA games I've played on this system. Those have included Arkanoid 2 and various Sierra games. No issues with any of those.

Not all E4000 card are equal and not always with all boards, miracle can vary, but in my experiencie not a card to recommend because of this

Crystal Caves & Dangerous Dave have issues with ET4000/1MB?

Compatible chips to upgrade Hercules Dynamite Tseng ET4000 w32/p memory?

etc etc i love Et4000 cards but give me too much trouble all over the years and builds

Try Dangeroud Dave haunted mansion, but scroll up, and check. All my Et4000 cards have OK horizontal scroll, but terrible vertical one. I had same vertical scroll problem in some apogee games, like Biomenace and others i cant remember. The pinball game did not work neither in all my cards

Lesson learned with DOS machines, no single machine can run all games.. not even all the games from its period. Incompatibilities come from many sources, and some games are down right unsolvable without patches or full hardware swaps.

A PIII is quite a good platform IMO, and if you disable its caches it slows down very well to run the 386 games. So it can cover quite a wide range of DOS games. If we're talking pure DOS then I agree with the Pentium 233MMX platform as the most versatile.. but if you want to include some Windows 3D gaming, the P3 is quite good if coupled with a Voodoo3 (which has excellent DOS compatibility btw).

There will always be unsolvable cases that can't be run except with specific machines: Might & Magic 1 only plays right on an XT (not even DOSBox's XT speed is able to get it right like the real XT). Terminator 2029 refuses to run on CPUs beyond 486. Super Street Fighter 2 Turbo needs a 486 DX 33MHz (not a bit faster, not a bit slower).

Other games require lots of tinkering or hardware swapping to get right: Curse of Enchantia requires a very specific memory layout or else it freezes on launch. Many Sierra games hate SB16 and later cards, and require patches for them. The list goes on forever.

I'd aim for the latest platform that serves the main games I'm after. Anything else is an extra. If it has 90% coverage of DOS games, that's alreasy a fantastic figure! I'd first try as hard as possible to squeeze as much coverage of the PIII as possible.. if it fails badly at a software you really like, then go for a more specialized build.

theelf wrote on 2025-12-27, 23:09:

Try Dangeroud Dave haunted mansion, but scroll up, and check. All my Et4000 cards have OK horizontal scroll, but terrible vertical one. I had same vertical scroll problem in some apogee games, like Biomenace and others i cant remember. The pinball game did not work neither in all my cards

I tested Dangerous Dave, and yes, it did have graphical glitches with vertical scrolling. However, there is an option to enable SVGA compatibility via a command line switch which fixed the issue.

Is this mainly just an issue with Apogee games? Like I said, I've tried EGA games from other companies (e.g. Sierra) and not seen any issues with those games. Though admittedly the graphics engines in those games are different.

Shponglefan wrote on 2025-12-27, 23:29:

theelf wrote on 2025-12-27, 23:09:

Try Dangeroud Dave haunted mansion, but scroll up, and check. All my Et4000 cards have OK horizontal scroll, but terrible vertical one. I had same vertical scroll problem in some apogee games, like Biomenace and others i cant remember. The pinball game did not work neither in all my cards

I tested Dangerous Dave, and yes, it did have graphical glitches with vertical scrolling. However, there is an option to enable SVGA compatibility via a command line switch which fixed the issue.

Is this mainly just an issue with Apogee games? Like I said, I've tried EGA games from other companies (e.g. Sierra) and not seen any issues with those games. Though admittedly the graphics engines in those games are different.

Yes i think like i said before, EGA problem came with apogee games. The pinball illusion is a VGA one

But apogee games are some of my favorite ones, then first i test in any machine. I dont have any PC without Dangerous Dave

wbahnassi wrote on 2025-12-27, 23:26:

Lesson learned with DOS machines, no single machine can run all games.. not even all the games from its period. Incompatibilities come from many sources, and some games are down right unsolvable without patches or full hardware swaps.

and software too, not always everything work, and some times need a lot of work and tricks... like DesqView/X... a paint in the ass software

Thats why im testing this last year this pentium 200+triton 1 chipset, in my tests is the most compatible DOS computer i ever build

theelf wrote on 2025-12-27, 23:38:

Yes i think like i said before, EGA problem came with apogee games. The pinball illusion is a VGA one

But apogee games are some of my favorite ones, then first i test in any machine. I dont have any PC without Dangerous Dave

Pinball Illusions is notorious for having issues with all sorts of graphics chips. I consider games like that to be an edge case when it comes to compatibility.

This kinda reinforces that a lot of times it comes down to which games one is building a system around.

On my own 486, I mostly use it for late 80s to early 90s adventure and strategy games. A lot of those games are VGA and run just fine. And the ET4000/W32P card I have delivers good image quality and performance for those games.

Second the 486-33 (DX or SX is irrelevant unless you play that one game that uses the FPU - leave Quake for your P3 instead). It's perfectly placed to play those difficult Origin games and de-turbo it for almost XT performance. Give it an original Sound Blaster (or closest hardware clone you can find/build) and a decent VLB VGA card (Cirrus Logic GD-542x cards are easy to find, cheap and compatible, but by all means look up what works well in games you play and/or is available/affordable) and you're good to go.

Add a HardMPU (or MPU401AT/Musicquest if lucky/rich) and some MIDI goodness (MT-32 or replica, SC-55 or replica) and you go to next level.

That's actually my main 'older' DOS system. I have an UMC U5S-33 CPU (like i486SX-33, just faster), UMC UM85C418F VGA (almost Ark 1000 speed, decent compatibility if you don't like Commander Keen - which I don't) and er.. UMC I/O, UMC NIC and motherboard with UMC chipset. Sort of theme there 😉 - but apart from the UMC stuff, it has a Snark Barker SB1.0 replica, a Roland MPU401AT (hooked up to MT-32 and SC-55ST) and an SSI-2001 replica because why not.

But of course this won't run Doom very well or anything newer at all playably. So I also have a P3-600 for late DOS (with GUS, SB AWE46 and Azetch SBPro2 clone with bug-free MPU). And even though the 486-33 can de-turbo to XT-like speeds, I also have a (Turbo) XT with EGA card, AdLib replica and so on.

My experience is that you really can't cover all bases with a single system. If you really want to try, aim for a Via C3 CPU that can (more or less) handle the late DOS fast stuff, but can be clocked down to - almost -XT-like speeds. But that's just the CPU. A good sound card for a late DOS game is rarely a good choice for an early one. Similarly, graphics will be a compromise. I've played around with a Via Epia (basically a C3 on an mITX motherboard) as a jack of all trades - but it's master of none.

I have a p233mmx with an S3 trio video card, vibra 16 sound card, and 64MB ram. It is the most versatile dos machine I've ever had. It will play all the late stuff like build engine games, quake, Carmageddon (though typically in low res modes for smooth framerates). And for early speed sensitive stuff, you can just rig up bat files with setmul to nerf parts of the CPU in real-time to make the system slow down to approximately 386 or 486 levels. I've played several games of the 80s and early 90s on it this way and they perform pretty well. It's a real Swiss army knife. There are a handful of games that don't run perfectly with the vibra 16 though.

I had a pentium 75 in this same system before upgrading and it was good for just about anything dos that was not a 3d polygon game, it was fine for doom but not stuff like Screamer, whiplash, Carmageddon. That's a worthy 486 alternative. The p75 was too slow for those to be fun for me though. I also overclocked it to 90mhz for awhile, and the speed improvement in demanding games was noticeable, but they still didn't run that well even on scaled down graphics settings so I went for the p233 to increase what I could play on this system.

Thanks for all the replies! 486-33 seems a popular choice. Is it fast enough for Stunts?

Would a 486-50 loose the low-end advantages of a 33? I ask it to broaden the search on the second hand market.

I do not wish to use my P3 for this purpose. After countless attempts it works just fine for its glide+dx7 purpose, it has an Audigy2.... I don't want to mess with it. So separate pc for most DOS jobs.

Nicolas 2000 wrote on 2025-12-28, 19:14:

Thanks for all the replies! 486-33 seems a popular choice. Is it fast enough for Stunts?

Would a 486-50 loose the low-end advantages of a 33?

Yes to Stunts. It's not super demanding. A 386 DX 33 already runs it well, so 486 33Mhz should be even better. But Stunts isn't speed-sensitive at all, and can be run on the PIII at full speed without issues.

A 486 DX33 with deturbo will still not get you XT speed, but will be probably like a 12MHz 286, which IMO isn't useful for anything in particular. It's not XT slow, and not 386 fast.. I don't know any games that require this speed..

On the otherhand, the 486 DX2 66MHz can be deturboed to 33MHz.. IMO it's much more useful.

Just my 2 cents...

^Wing Commander 1 comes to mind (it's from 1990).
I vaguely remember that it's running "okay" on 12 to 16 MHz 286 PCs.

Graphics adventures/Point&Click adventures ran okay on 286 PCs, too. Same goes for well-tuned Turbo XTs.
Though I can't remember that faster 386/486 PCs caused any notable issues with these games, either.

Edit: Or let's see it this way: 10 or 12 (or 16) MHz ATs used to be the baseline setup for VGA.
Because these 286 PCs were still sold new in the 1988-1990 (or 1987-1991) era, when VGA was new.
So it's not bad to be able to run things at 286 speeds.
The first VGA games without speed-compensation probably had been coded on such PCs.
Another early game that runs fine at slower speed might be Jet Pack, maybe.
The robots are moving a bit too fast on newer PCs, I would say.

Edit: I was thinking out loud here. A 386 of its time might have been just as compatible, probably.
Also because actual performance did vary. Not all 386 PCs had external cache for example.
A 386 at 16/20/25 MHz was on the cozier sides of things, I think.
By comparison, a 386 with 64 or 128 KB motherboard cache, running at 33 or 40 MHz, was in the realms of a 486 already.

Edit:

On the otherhand, the 486 DX2 66MHz can be deturboed to 33MHz.. IMO it's much more useful.

I think same. Someone can't go wrong with a 33 or 66 MHz 486.
In the 90s, the 486DX2-66 was considered a "sweet spot" in terms of compatibility vs performance.
https://en.wikipedia.org/wiki/Intel_DX2

It also was about first time that a CPU was considered to provide enough "oomph" (power) for handling multimedia, virtual reality, cyber space and for running Windows 3.x satisfactory.

The next big thing was the Pentium, of course.
In the press of the 90s it was heavily hyped just like Motorola 68060 or Power PC or the Windows NT RISC PCs (MIPS, Alpha..).

Edit: I almost forgot, in office spaces/professional use, the 386DX-40 platform was popular, too.
It was very stable, affordable, highly integtrated, compact and cool-running.
Even Windows 3.x ran painlessly. But it was not exactly a gaming platform.

And that's the point, maybe. There were several generations of x86 PCs that very fine for a specific genre, I think.

PC/XT.. CGA and GW-BASIC games
Early ATs (6/8MHz).. EGA stuff
Late ATs (10-16MHz).. early VGA, shareware games, point&click
Early AT 386.. MS Flight Simulator 3 and 4, early 3D games, SimCity, power users
Turbo XTs.. comparable to Late ATs; users are less wealthy
486 33/66 MHz.. VLB graphics, VGA/SVGA games, first person shooters, Windows 3
386DX-40.. reliable budget PCs of Windows 3.1 era (some plastic 386 CPUs have Windows 3.1 logo imprinted)
Pentium 60 (original).. beta status, tech demo
Pentium 75-100.. SVGA, 3D games, Descent etc
Pentium Pro.. not used in gaming, Windows NT
Pentium MMX.. 3dfx Voodoo and 3D, first PCI soundcards but still with DOS-compatibility (EWS 64 XL etc)
Pentium II/III.. late DOS era, DOS-based emulators, Allegro-based DOS games, high-resolution modes, VBE 3 and AGP

^That's just a very crude overview, of course.
It's merely meant to given an idea about the different groups of DOS PCs.
In PC history, each x86 generation has a popular representative, I believe.

Edit: About the 486DX-50.. It's not bad at all. It used to be the holy grail in early 90s, so to say.
Something that CAD users wouldn't shy away from, either. Raytracing and DTP must been a joy on such a setup, too!
If the hardware chosen was running stable, it was better performing than a 486DX2-66 even.
I don't think that software compatibility was a real issue, either.
Except for PC/XT era games and some early VGA games that ran a tad bit too fast.
Though a Turbo button might have solved the issue for the latter.

Edited.

Jo22 wrote on 2025-12-28, 19:55:

Edit: Or let's see it this way: 10 or 12 (or 16) MHz ATs used to be the baseline setup for VGA.
Because these 286 PCs were still sold new in the 1988-1990 (or 1987-1991) era, when VGA was new.
So it's not bad to be able to run things at 286 speeds.

I rebuilt our original 12MHz 286 and tried running VGA games on it. While they can run, it's really not ideal.

386 or 486 is much better for VGA titles, including adventure games.

wbahnassi wrote on 2025-12-28, 19:41:

A 486 DX33 with deturbo will still not get you XT speed, but will be probably like a 12MHz 286, which IMO isn't useful for anything in particular. It's not XT slow, and not 386 fast.. I don't know any games that require this speed..

Deturbo speed depends on how the turbo functionality is implemented.

My own 486 DX-33 can hit the equivalent of a 386 DX-33, SX-25 or 8MHz 286 depending on turbo and L1 cache enabled/disabled combinations.