Does the Intel IGP 815e/845 have S3TC ?
Did not find any info about that.

dr.zeissler wrote:

I am currently searching for an S4pro PCI card to test in a p4 thinclient. S4pro should give me win3x/9x/2k drivers and these fi […]
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I am currently searching for an S4pro PCI card to test in a p4 thinclient.
S4pro should give me win3x/9x/2k drivers and these fine hires-textures.

Creative Labs 3D Blaster Savage 4 32 MB Savage 4 Pro 110 MHz 125 MHz 8.0 ns 300 MHz passiv Diamond Stealth III S540 32 MB Savage […]
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Creative Labs 3D Blaster Savage 4 32 MB Savage 4 Pro 110 MHz 125 MHz 8.0 ns 300 MHz passiv
Diamond Stealth III S540 32 MB Savage4 Pro+ 125 MHz 143 MHz 7.0 ns 300 MHz passiv
Elsa Winner II-32 32 MB Savage4 Pro+ 125 MHz 135 MHz 7.0 ns 300 MHz passiv
Elsa Winner II-16 16 MB Savage4 Pro+ 125 MHz 143 MHz 7.0 ns 300 MHz passiv
Hercules Beast 99 Savage4 Pro 32 MB Savage4 Pro 110 MHz 125 MHz 8.0 ns 300 MHz passiv
Number Nine SR9 32MB 32 MB Savage4 Pro 110 MHz 125 MHz 8.0 ns 300 MHz passiv
Number Nine SR9 16MB 16 MB Savage4 Pro 110 MHz 125 MHz 8.0 ns 300 MHz passiv

Hopefully there are PCI-Cards existing.

Diamond made S540 and S530 in PCI versions.

dr.zeissler wrote:

Does the Intel IGP 815e/845 have S3TC ?
Did not find any info about that.

No idea, but the Geforce2 MX supports S3TC natively, which I just found out when looking for something else.

Seems that i865gv supports S3TC, but I am not sure.