3. Motherboard
If you want a blue motherboard with an ISA slot, not newer than the year 2000, we have a few options. We’re only considering the highest-performance solutions available in the year 2000, so curiosities like this are excluded.

J-BOND PCI 500C-A, source: retroweb.com, autor: matt
Below: Big blue 2000 three

- GA-7ZXR / GA-7ZX: based on the VIA KT133 chipset, so we’re limited to FSB 100 and “B” CPUs. The fastest "B" CPU available in the year 2000 is the Athlon 1200. FSB 133 boards from 2000 based on the AMD 760 chipset do not have an ISA slot, just like the VIA KT133A. Moreover, KT133A was not present in 2000 AFAIK. The CPU itself is the easiest to obtain of the three options (at least if you don’t have a psychological barrier against paying $40 for a Socket A Thunderbird). Main issue is finding a motherboard with the correct production date — the earliest review dates back to late 2000. Performance sits in the middle of the three. The unit I owned was manufactured in 2001.
- GA-7VX: both the motherboard revision with an ISA slot and the Slot A Athlon 1000 are very hard to find. Just a few days ago I scored the board; its production date is week 19 of 2000. It is currently faulty. The performance of the Athlon 1000 “Orion” should be the lowest of the three, but as we all know, a Slot A–based retro PC has the highest “street credit” : )
- GA-BX2000+: based on the Intel 440BX chipset, which supports FSB 133 in this case. It is the only one of the three that provides native ISA support. When paired with a Pentium III 1000/133, it should deliver the highest performance of the three. Having four DIMM slots is an advantage, but in this case it becomes an additional challenge when you want to fill all of them with a Yeti blue SDRAM modules. Both units I own were manufactured in the 8th and 32nd week of 2000 respectively. There is also a twin board, the GA-6BX7+, but it uses Socket 370. From my observations, it is very rare, and I definitely prefer slot over socket.
First idea for the blue build was based on hardware from 2001 — a GA-7ZXR board, an Athlon Thunderbird 1400, a Thermaltake Volcano 7+, and a Hercules Radeon 8500. Until now I haven't had the opportunity to get a Non-LE version od Hercules 8500, but the cooler and motherboard were among the first components I got. I wanted the 7zxr instead of the 7zx in my build because it was a better model with RAID and the PCB was full ATX size
I really wanted to use the Volcano 7+, best looking 462 cooler IMO. But the earliest review I found was dated 2002*, and anyway, I couldn’t get a Hercules 8500, so the plan shifted from a 2001 build to a millennium build. I wanted to stay with 7ZXR but pairing it with an Athlon 1200 (AMS3B, FSB100) and Alpha heatsink, PAL6035 or 8035. At that time, I still didn’t know that Gigabyte motherboards have a sticker indicating the production date.
* Recently, I went through reviews and searched the Web Archive more thoroughly than before, and it turned out that there is a review of the Volcano 7+ cooler from mid-2001. This means that the 7ZXR paired with this cooler is historically accurate, and I could have used it to build a proper 2001-era PC.
A few photos from that period, i added everything blue I had on hand to the photos. There are both GA-7ZX and GA7ZXR.




Along the way, I also get three GA-BX2000+ boards. One dead , two working ones. Back then I wasn’t planning to use them in my build. The timeline looked like this:
10.2021 — Thermaltake Volcano 7+
10.2021 — First GA-7ZX — died on a benchtable, fried northbridge - scrapped
10.2021 — Second GA-7ZX — later sold to catch some money to buy GA-7ZXR
05.2022 — GA-7ZXR - sold
11.2022 - First BX2000+, bought as untested, dead on arrival, scrapped
02.2024 — Second BX2000+ - working
12.2024 — Third BX2000+ — bought in a scrap package, working, with no heatsink
In the end, I changed my mind and went with the BX2000+. 7ZXR looks too modern. The appearance of this board doesn’t evoke the ’90s at all — it could just as well be from 2005. It has integrated audio, what doesn't suit me visually with an external sound card. GA-BX2000+ PCB has a more matte finish. Based on the 440BX — surrounded by plenty of enthusiast folklore.
What about the 7VX? If the board can be repaired and I ever get an Athlon 1000 Orion, I might reconsider, in another two years I could easily change my mind again 😀 For now, I think I won’t use Slot A anyway, due to the presence of integrated audio and the fact that its performance is lower than a Pentium III 1000/133. Time will tell.
As I mentioned earlier, one of the boards was defective and ended up being scrapped. I now have two units. One came from the scrap box, missing the heatsink which I replaced. Both mobos are 100% working.
The heatsink attached to it is from AliExpress; it looks identical to the original one, just in black. This is a temporary solution—eventually it will have an orange heatsink. It’s attached with 3M-8926 thermal conductive tape, the best I could find/buy, with a thermal conductivity rating of 1.5 W/m·K. There`s also two-component thermal glues with better thermal conductivity, but I don’t want to use them for obvious reasons.


Both boards had Sanyo capacitors near the slot, while the other casps are GSP or Choyo. Since I wasn’t able to find reliable specifications for the originals, I replaced all caps, on both boards with recommended by Users Panasonic FR.


Solder quality demo

And board after lifting : )

Useful facts
The board has JP20 and JP21 jumpers, labeled as “Close for VOODOO.” In reality, closing them bypasses the voltage regulator on the motherboard (a TO-220 near the AGP slot), and the graphics card is powered directly from the PSU. With the jumpers open, a GeForce3 Ti500 was unable to function properly on this board, as it would hang shortly after entering 3D mode. This is described in more detail in this thread:
Troubleshooting Geforce 3 TI500 after professional reflow - hanging due to too high temperature
The board has "Turbo" JP11 jumper and for the past two years, I haven’t been able to figure out what it actually does. If anyone has an idea, I would be extremely grateful.

Proof
Nothing special. I didn’t find a dedicated review of the motherboard itself, but I did find a mention of it in a review of the Matrox MG-400 GPU from February 2000. In addition, we have the release dates of the various BIOS versions on the manufacturer’s website via the Web Archive. Since the motherboard has a production date sticker, that serves as the most important piece of evidence.
