I want to say hell yeah, man! Usually available AND cheap. I had one as a tot and I loved it. I have one again and the feeling is the same.
There are many variants of this system, so you'll have to open it to check details, but I haven't seen one with ISA. The one I had as a child had Slot Pentium3 and 3 RAM slots, my current one is Socket 370 with 2 RAM slots. I know we all like looking at things, so here's my Dell. It has a TDK drive with a cool blue tray and Audigy now. Didn't skip a beat upgrading from SBLive CT4830 to Audigy (SB0090), still loads the SB emulation and can boot directly into 7.1 DOS and works with pretty much every game I have.

Currently:
Pentium 3 933
2x128MB 133Mhz SDRAM
GeForce 4 MX4000 128MB
SB Audigy with Front Panel
D-Line DFE-530tx
Quantum Fireball lct 30GB

It dual boots 98/XP on the same drive (separate partitions). It's a damn good system. Runs UT 1280x1024, Quake 3 1280x1024, and 'almost' runs BF1942 (it "runs", 🤣)

Good luck if you pick one up! It'll for sure be better than your current rig. AGP is necessary for W98 gaming as the cards are easier to acquire and FAR more plentiful.

Holy shat! Thanks dude! Gotta convince my parents now to let me get it for myself

The Dimension 4100 is Dell's last system in the beige case they used for the second half of the 1990s. Compared to its predecessor the 440BX/slot 1 XPS Txxxsr series, switched to i815 chipset, upped the FSB to 133MHz, dropped ISA, added 4X AGP, upped the RAM to PC133 SDRAM but dropped the third slot to go with the i815 max of 512 megs of RAM.

The nice thing about the Dimension 4100 is that they seem to be plentiful on eBay. Hopefully you don't get an early builds as those had noise issues. And they are your typical late 1990s Dell - if you get the right model, no onboard sound, no onboard video, just discrete cards of at least reasonable quality. These are the systems that made Dell's reputation in the late 1990s.

Meanwhile, if you wanted an XPS Txxxr, well, good luck finding one. I have seen almost no Txxxr (coppermines) on eBay; there are some T500/T600 Katmais occasionally. Meanwhile the 4100s are in the 800/866/933MHz range which is a big improvement.

But, one of the things that make them much cheaper than 440BX systems is the lack of ISA slots. This is not a system you get for the best retro DOS experience. This is a system you get for an outstanding ~2000 Win98SE experience, maybe Win2000 except Win2000 is meh for games, early XP, etc.

As for the floppy situation, I'm pretty sure these only support one drive, and it probably has to be 3.5". If you want to play with 5.25" drives and software only found on 5.25" drives, that machine is at least... 4-6 years too new.

Sounds good. To get a 5.25 floppy, could I use some type of 3.5 to 5.25 floppy adapter from the interwebs? Let me know. Thanks

What would you recommend for a balance between 90s dos and 90s 3d windows gaming? One that supports 5.25 floppy?

The board on 4100s is very rock solid, it's an oem version of Intel D815EEA if I'm not wrong (I use this board - Intel version - on my Tualatin build, via adapter).

Only difference is propietary PSU in Dell system, do not connect a standard ATX one!

Regarding the Dell PSU proprietariness, as far as I know, Intel boards have footprints for both the Dell PSU connector and an ATX connector.

But here's the trick, that so-called Dell PSU connector is just an ATX connector which is just ...shifted to the next row..

Now I'm not sure if this also applies to their P3 systems, so don't take this for granted.

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