Looks like Oblivion will run on some really ghetto hardware. I'm throwing my hat in the ring with the low end stuff I've played it (for hours) on:
6600 non-gt, socket 939 Sempron 3400+, 512M of 3-3-3-7 PC3200
X200 IGP (600 3dmar05s!), socket 939 Sempron 3400+, 2G 2-3-3-5 OCZ ram
Mobility 9700, 3200+ mobile (1 meg cache 2ghz socket 754), 512M PC2700, 4500 rpm drive. I play this on the plane, so we're talking 800 mhz cpu and downclocked 9600 here.
Looks like there's a guy out there with a geforce3 who managed to run it, but I'm definitely a contendah.
6600 non-gt, socket 939 Sempron 3400+, 512M of 3-3-3-7 PC3200
X200 IGP (600 3dmar05s!), socket 939 Sempron 3400+, 2G 2-3-3-5 OCZ ram
Mobility 9700, 3200+ mobile (1 meg cache 2ghz socket 754), 512M PC2700, 4500 rpm drive. I play this on the plane, so we're talking 800 mhz cpu and downclocked 9600 here.
Looks like there's a guy out there with a geforce3 who managed to run it, but I'm definitely a contendah.