GTX 10/16/20 series cards often do not work on older AM2/AM2+ motherboards, because the motherboard lacks UEFI firmware, relying instead on a "Legacy" BIOS. Modern NVIDIA GPUs require UEFI to initialize properly during boot.

Many old motherboards from the transition period have buggy UEFI implementation, so that too is a problem.

robertmo3 wrote on Yesterday, 14:19:

i tried gtx 1660 in a Phenom X4 9550 cpu, ASUS M2N-SLI Deluxe board (socket AM2) and it doesn't work. win11 works on that board though.

I bet that video card requires UEFI.

Or the board cannot map memory how it needs to for that video card.

robertmo3 wrote on Yesterday, 14:33:

GTX 10/16/20 series cards often do not work on older AM2/AM2+ motherboards, because the motherboard lacks UEFI firmware, relying instead on a "Legacy" BIOS. Modern NVIDIA GPUs require UEFI to initialize properly during boot.

Didn't know that, that's very interesting.
So I suppose this applies to most modern GPUs (anything DirectX 12 more or less)??

Last year I acquired a Radeon RX550 from the flea market and I couldn't get it working on two of my tests systems - one being an old socket 939 motherboard, the other a socket 775 system, and the last a AM2 system. Do you think/know if Radeon RX 5xx series also need UEFI BIOS in order to work? If so, perhaps that might explain why. Then again, most of the stuff I get from my local flea market don't work right (or at least not very frequently). Would be nice if the card actually worked... though I probably shouldn't get my hope up too much.

Anyways, thanks for sharing the above info.

The mains ones are:
GTX4070 12GB in my main "modern" pc
7800GTX in Pentium 4
4 port SATA card in TV PC
GTX980TI 6GB in XP PC

I've built a new system recently (pre rampocalypse) and I only have two PCIe cards; a 5070TI and a SoundBlaster Audigy Rx.

To be honest, the SoundBlaster is more of a nostalgia totem, I've always had one in my machines since the 90's. In theory this card allows me to have EAX in old games, but I've been having too much fun playing new games, and this card doesn't add anything over the USB DAC (Dragonfly) I'm using atm.
I love expansion cards, but let's be real, for mainstream use there is not really any use beyond the GPU anymore.

momaka wrote on Yesterday, 21:12:

Do you think/know if Radeon RX 5xx series also need UEFI BIOS in order to work?

RX580 Sapphire pulse & GA-MA785-UD3 (Award bios PG6.0) work fine together.
https://winraid.level1techs.com/t/request-del … e-rx560/34936/5
https://winraid.level1techs.com/t/amd-and-nvi … uests-diy/30917

Other than GPUs, I have some USB 3.0 interface cards and an eSATA interface card. The move to USB 3.X and USB 3.X WiFi adapters has made many add-in cards superfluous.

Spread across my PCs and homelab are GPUs, 4 port gigabit and 10 gigabit LAN cards, LSI and Adaptec SAS RAID cards, Infiniband cards, USB 3.0 cards.