VOGONS


My 440BX project

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First post, by voscoboss

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Hi! I have lurked the forums for a long time, now I am ready to post something about my project. No PC pictures for now... I am not sure if that makes a lot of sense for a bunch of standard PC parts in a generic white case...

Before getting into retro PC I was, and still am, into Commodore Amiga. But I am not here to talk about Amiga 😀

My current quest is to build the ultimate 440BX PC. This is to be my one and only go-to retro PC for DOS, Windows 98 and early XP stuff. Initially I wanted it to be just the ultimate Pentium III, but after playing around with the VIA Apollo Pro 133a chipset, I couldn't help thinking the 440BX is simply the better platform. Back in the day it was considered the absolute best, most stable platform. Yes it is missing the AGP divider to run AGP at a proper speed, but all cards I have thrown at it are fine with an overclocked bus anyway. Also the VIA chipset just didn't do it for me even if it has the proper dividers. I could never get it to run just right. I would always have some microstutters or other strangeness which I just don't want to deal with. Granted I did have the VIA MVP3 chipset back in the day which was pretty horrible and has tainted my opinion about VIA chipsets forever...

For old times sake I wanted an Abit board, as Abit was my favourite brand back in the day. I had a BH6 2.0 back then, running a 100MHZ FSB Slot 1 Pentium III-850, but now I wanted the ultimate Abit board, the BX133 RAID. I found one with what seems to be the original caps in pristine condition, pretty unbelievable that the caps are still good (enough?) but it is stable as a rock even at high FSB. I might still recap it at some point though. I put a Pentium III-S 1400 Tualatin on it after modding it, using the PCB that needs to be soldered to the bottom of the CPU. I experimented with graphics cards to land on an FX 5900 XT, installed a SATA-150 card to be able to run an SSD without IDE-SATA converters which are always trouble in my experience. I searched and found a total of 512MB CL2 RAM that runs stable at 145MHz, haven't tried any higher as I think running at 145MHz on a 440BX with AGP card is already a pretty insane overclock to the AGP bus. For DOS compatibility I installed an AWE64 gold into the ISA slot. However I have not tried a single DOS game on it yet. As far as Windows XP goes, it runs games up to about 2003 pretty well. Need for Speed Most Wanted 2005 is what I really wanted to achieve smooth gameplay with, but that is a bridge too far as I was already afraid of. But that game is still good to play on modern PC for me.

I think hardware wise I am happy for now and I will do some more stability tests to see if 140MHz FSB is good for everyday use. Yeah I want a bit of an overclock, just because I can, but nothing too crazy. If all is stable, I will start to configure the OS'es and stuff.

So that's where I am at now, thanks for reading, any questions or suggestions then let me know!

Reply 1 of 3, by gmaverick2k

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My via 133T and via 333 are both stable as a rock. Truth be told I'm using a cx500 for the via133T (don't have a 20 pin extension for my period correct 300w seasonic) and an HX1200i for the via 333. I don't think about overclocking vintage parts and go stock always (or down clock). The only thing I can see is that overclocking the 440bx you're going to have issues with the agp slot.

Main: Z440/E5-1650 V4/3060Ti/64GB/iFi Zen DAC V1/Klipsch ProMedia 2.1 THX/Philips 43PUS8808/12
98/DOS: QDI Advance 10T/Pentium iii-S 1.4 GHz/Quadro2 Pro/Vortex 2/ESS 1868f/SC-55/SC-88 Pro/LG StudioWorks 995E
XP: Thinkcentre Edge 72/i5-3570K/GTX 970/X-FiTi

Reply 2 of 3, by voscoboss

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gmaverick2k wrote on 2026-10-07, 19:59:

My via 133T and via 333 are both stable as a rock. Truth be told I'm using a cx500 for the via133T (don't have a 20 pin extension for my period correct 300w seasonic) and an HX1200i for the via 333. I don't think about overclocking vintage parts and go stock always (or down clock). The only thing I can see is that overclocking the 440bx you're going to have issues with the agp slot.

My VIA 133a boards are stable, but don't run as smoothly. More demanding games run smoother on the 440BX than on the 133a with the same settings. I have a modern Seasonic PSU connected, I don't think the PSU is a factor here.

Reply 3 of 3, by AlexZ

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Even Athlon XP can't handle NFS most wanted 2005. Very fast Athlon 64 is required. FX 5900 becomes a joke in dx9.

Pentium III 900E,ECS P6BXT-A+,384MB,GeForce FX 5600, Voodoo 2,Yamaha SM718
Turion 64 MT-40@2.4Ghz,Gigabyte GA-K8NE,2GB,GeForce GTX 275,Audigy 2ZS
Phenom II X4 965,Gigabyte GA-MA770-UD3,8GB,GeForce GTX 780
Vishera FX-8370,Asus 990FX,16GB,GeForce GTX 980 Ti