Im still really impressed by the performance of this chip.
Its clearly the fastest 128bit bus chip on the market.
The GTX
650 Ti (
~10% slower than the 7790 (1075mhz)) (
128bit bus chip) (
221mm^2 chip)
The AMD
6870 (
~1% slower than the 7790 (1075mhz)) (
256bit bus chip) (
255mm^2 chip)
The AMD
7790 -------------------------------------- (
128bit bus chip)
(160mm^2 chip)
The GTX
560 Ti (
~5% faster than the 7790 (1075mhz)) (
192bit bus chip) (
360mm^2 chip)
Its a 128bit bus chip giveing some 192bit/256bit cards a run for the money.
The small bus means its a smaller chip => should translate into cheaper to produce, than the 192/256bit ones its competeing against. This card is gonna drive prices around this range down, which is a win for the consumers.
All in all I'd say prices represent performance quite well, except GTX650Ti has to go down a bit.
Yep if the 7790 ends up around 140$, then the 650ti would have to go down in price.
~10% performance differnce would be enough to make most people pick a AMD card instead of the simularly priced nvidia card.
Competition is good for the consumer.
----- my thoughts:
when AMD had the better of nvidia back with the 4xxx-5xxx series, that was partly because of fast GDDR speeds and lower bus widths.
Now nvidia has the better of AMD, and again its probably because of bus widths.
Its clear to me, that if you can make a chip smaller by useing smaller bus, the "increased" power usage of faster Ram speeds, is a good price to pay. Because smaller chip = less power used, so it "pays" of the increased power usage of the ram (no loss). At the same time, your chip is smaller than it would have been if you went with a wide(r) bus width = better profits / lower prices to compete on.
It has me wondering why AMD went with "384" bit width busses for their bigger cards,
instead of just going 256bit + faster GDDR speeds like nvidia did.
Would AMD have been better off this generation with 256bit bus cards for their 79xx series, and instead haveing 1600mhz GDDR ram speeds, and smaller chips clocked higher? I think so.
Anyways.... I think the 7790 is a strong addition, and is gonna drive competiton in that price range, by alot.
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