Can my Pentium D 945 run 9800GT ?

Does it have a pci express slot? If so, then yes. If not, then no. You may also need to update your power supply, if it doesn't have a 6 pin power out.

you're able to could desire to coach settings on low/medium. do no longer hear to the guy that mentioned AMD is greater helpful than Intel for gaming, he hasn't a clue what he's talking approximately. The 3500+ is greater helpful than the Pentium, yet the two are extremely undesirable. you could build an fullyyt new gaming computing device for under $400USD, i could recommend basically getting a clean workstation.

no point in running the 9800 with that sort of ram i have a pc with a 945 in and 2 gig of ram and run a 7600 on it

Your CPU doesn't matter. It's your motherboard. If you motherboard has 1 pci-e x16 slot on it, then yes. And you need to make sure that your PSU has one 6 pin pci-e connector, and that is at least 450W.