I have win7 32bits installed and with the 2gb ddr ram it not very slow. if i put an ssd in a old pci sata card Will the ssd speed slow down by the pci bus to ATA like speeds making not worth the upgrade?Almost anything from the time period (2002, plus or minus a year) would be fine.
And no, it's not worth putting an SSD in it. For one, you need a PCI based expansion card to add SATA ports. For another, they don't really need it. In my experience (both from what I can remember and from my XP build from a couple years ago), the computer was still pretty responsive. Plus there'd be no TRIM support unless you threw on Windows 7, though I'd argue Windows 7 is a little too new for a system of that vintage.
The maximum speed PCI can provide, assuming you don't have other PCI cards (because PCI is a shared bus), is 133MB/sec. You'll still get the IOPs benefits though.I have win7 32bits installed and with the 2gb ddr ram it not very slow. if i put an ssd in a old pci sata card Will the ssd speed slow down by the pci bus to ATA like speeds making not worth the upgrade?