Stream Processing Units

ok I've just seen an ATI Radeon HD 4670 for £65 and it has 320 Stream processors where as a £300-£400 GeForce GTX 280 has only 240:huh: i thought the more stream processors the better the card? I dont know much about ATI cards as I've always presumed NVIDIA's GeForce cards were the best.How does ATI's best card compare to NVIDIA's best for example?

ATI & Nvidia SP's cannot be compared as they work completely different...


the way ATI cards are made forces the stream processors run at the same speed as the core... NVIDIA however makes less of them but they have their own speed (much faster than the gpu core speed)

the difference becomes apparent when you have 800 (4870) on one, & 240 (GTX280) on another and they have similar performance....

hope this helps.....



SK

Cool i was begining to wonder lol

Also Nvidia cards have a much higher texture fill rate and pixel fill rate if I remember right, so with the more SPU's the ATI cards have, the texture rate of Nvidia cards balance it out.