supercordo wrote on 2026-09-02, 22:24:
Waste of money. The later agp cards are already using a PCIE bridge chip. Putting it on the slowwer pci bus is retarded.
The value of bandwidth is less time loading textures before the benchmark run begins, and nobody seems to care to measure that particular delay. When comparing AGPx2, AGPx4 and AGPx8, I think we see an FPS improvements of ~2% when increasing bandwidth from 266MB/s to 2133MB/s.
The more valid criticism is that adding any bridge (e.g. PCIe to AGP, or PCIe to PCI) will also add a translation layer with command queue batching. Some A/B testing is needed to know if its really painful or not. It is easier to design a test than to find the time to execute it 😉
Could be a waste of money. The PCIe-PCI bridge probably does not support VBIOS at POST, but any attached PCIe card can be detected by the OS, so.. I don't know!
Desktop timeline [ MOS 7501 → 68030 → x86(P5/MMX) → x86(K6-2) → x86(K7*) → PPC(G3*) → x86-64(K8) → x86-64(Xeon) → x86-64(i7) ] * lost