Lots of the very early PCI cards had sockets like those.
Perhaps those chips would work?

But I'm not sure if it'll accept EDO memory chips

I do have a PCI card with what appear to be identical sockets (4 of them, each with a chip). I was thinking of putting them in. What's the worst that could happen? No boot? Spontaneous combustion?

I have the exact same card and successfully upgraded it with standard 256K x 16 bits EDO DRAM chips.

batracio wrote:

I have the exact same card and successfully upgraded it with standard 256K x 16 bits EDO DRAM chips.

Cool. Found some on ebay that I hope will do the trick.

They are just SOJ chips. with 70ns of access time..

http://www.ebay.com/itm/KM416V256-416V256-416 … #ht_1563wt_1163

The memory chips are only to can use a lot higher resolution.. because it can adress more with more memory on this board.

The card wouldnt get faster..

Robin4 wrote:

The memory chips are only to can use a lot higher resolution.. because it can adress more with more memory on this board.

The card wouldnt get faster..

Actually each of those chips has a 16-bit interface. When used in pairs, they allow the resulting 1 MB of RAM to be addressed by a 32-bit width bus. If you add another pair of chips, the resulting 2 MB may be addressed by a faster 64-bit width bus if the graphics card was designed to support it. That's how S3 Trio64 and other similar cards work when you install the memory upgrade.

Good info. I'll run a benchmark before and after to see how it turns out.

OK, but that info is true for 64-bit cards only. IIRC, S3 805 is a 32-bit card.

Some ET4000 chips can do an interleave like that as well.

S3 805i supports interleaving, so you should get a speed boost.