For gaming surely Nforce . . .
Depends!
But currently, its Intel based are better value for money!
i've read that, nforce meant only for SLI. otherwise INTEL anyday.
^^Thats right, If you are gonna use 2 cards with SLI, go for nforce, otherwise intel ftw.
intel is known for it's reliability & nforce is known for it's performance.
Also with latest nforce you can overclock without worrying
about cpu ram ratio as intel maintains a cpu ram ratio
intel makes much better & stable chips compared 2 nvidia
yeah, intel is stable but for extreme over clocking delight it's nvidia that rules the scene.
For example old nvidia chip like 680 sli has better overclock features compared to intel p35.
Also that 680 chip supports 2 gfx cards @ 16x sli where 965 only supports crossfire @ only 4x.