For the extra few dollars, you might as well get the fastest you can.
There are almost always ways to underclock a fast thing, but no guarantee you can overclock a slow thing.

Plus you get the heat benefits of a newer process.

I assume you know 98 only uses one core. It works with more, but it will never use them. Usually they can be disabled in the bios if you want that nth degree of power saving. If you don't care, it won't matter.

myne wrote on 2025-06-24, 08:49:

For the extra few dollars, you might as well get the fastest you can. There are almost always ways to underclock a fast thing, b […]
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For the extra few dollars, you might as well get the fastest you can.
There are almost always ways to underclock a fast thing, but no guarantee you can overclock a slow thing.

Plus you get the heat benefits of a newer process.

I assume you know 98 only uses one core. It works with more, but it will never use them. Usually they can be disabled in the bios if you want that nth degree of power saving. If you don't care, it won't matter.

K8V is 754 which, afaik, was single core only - the first to get dual was 939.

thanks for the info. I am ware that win98se only supports single-core cpu.

But it news to me that socket 754 supports a core cpu. The normal Athlon 64 cpus i was refering too aber single-core cpus too.

Edit like @ pcbytes said.

The most unpleasant thing about such a system is the south bridge, which fundamentally does not work with any SATA2/3 devices.
The choice of SSD will be problematic.
VT8237R - work, but i don`t know any motherboard with it.

shevalier wrote on 2025-06-24, 09:44:

The most unpleasant thing about such a system is the south bridge, which fundamentally does not work with any SATA2/3 devices.
The choice of SSD will be problematic.
VT8237R - work, but i don`t know any motherboard with it.

I can just second this. Unless you want to use a plain slow SATA 1 HDD, those SATA ports will be useless. Same story on my MS-7075.

tehsiggi wrote on 2025-06-24, 09:51:

Unless you want to use a plain slow SATA 1 HDD, those SATA ports will be useless.

Seagate SATA2 can be switched with a jumper, IBM - via a utility.
Samsung - don`t know.
This is for HDD of about ~100 GB.
But I have never come across an SSD that could be switched to SATA1 mode.

PS.
GA-K8N51GMF s754
MCP51 from nVidia supports SATA2, but the resulting speed is like SATA1.
And on SATA2 SSD from Intel, SATA 2 did not want to work.
So more or less intelligible SATA2 in those years was only at Intel on ICH7

Thanks for the warning about potential problems with storage. Good thing that I have not purchased any other parts except the mainboard itself. I wanted to order the extra parts, not before doing some double checking into which problems I could run.

predator_085 wrote on 2025-06-24, 10:19:

Thanks for the warning about potential problems with

AGP performance 🙁
It seems to be a dependency on the K8T800 revision and BIOS version.
Moreover, the problem is only in Windows 98.
There are several threads about this here.
I have not encountered this, as I use Windows XP.

shevalier wrote on 2025-06-24, 10:04:

Seagate SATA2 can be switched with a jumper, IBM - via a utility.
Samsung - don`t know.

Some via jumper too, some others via utility https://www.chip.de/downloads/Samsung-ES-Tool_62402659.html

Ydee wrote on 2025-06-24, 14:32:

shevalier wrote on 2025-06-24, 10:04:

Seagate SATA2 can be switched with a jumper, IBM - via a utility.
Samsung - don`t know.

Some via jumper too, some others via utility https://www.chip.de/downloads/Samsung-ES-Tool_62402659.html

Thanx, BUT...
For building a PC based on the VIA K8T800, I would recommend an IDE to SATA adapter on something like a JMicron.
ATA 100 (or 133?) is not ATA33 (like BX440 or MVP3), it is fast enough.
Some SATA PCI Silicone Image do not provide more speed, but lose in transparency - drivers are needed.

Despite the shortcomings - a great platform.
I always say that "the best BX is Athlon 64 BX"
The only thing better is Turion, but it's hard to get.
Finding a SIS641 motherboard with DDR is borderline possible.
And with P3-S to boot.
S754 is a great and most underrated platform I think.

@shevalier Thanks for the further details. I will check out the threads you have mentioned to learn more about issues. Sounds like it can be quite ride to make my next project fully functional. I do not mind though. I will be interesting to the all the tinkering.