Practical benefits of a 512-bit bus
- Thread starter nonamer
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Check out the R600 thread, the thing has 2140 pins from the image they're working from. Nothing to suggest its fake either.
The_Wolf_Who_Cried_Boy
Newcomer
That seems to be the "big problem" with R600. With a 512 bit bus, you can't ever compete on price. Will R600 cost >$700 at launch? With it ever go under $500? $400?
Perhaps they could not compete in price with the GDDR4 version, but it would be a powerhouse.
What about with a lesser model with 1gb GDDR3? Seemed plausible enough for Fudo to report (Pele-GDDR4/UFO-GDDR3).
XTX with high-speed GDDR4, XT with slower GDDR4 or DDR3, and XL with (perhaps slower) GDDR3?
I'm sure they'll find some way to compete with (a) product(s) similarly priced to the 8800 series.
What about with a lesser model with 1gb GDDR3? Seemed plausible enough for Fudo to report (Pele-GDDR4/UFO-GDDR3).
XTX with high-speed GDDR4, XT with slower GDDR4 or DDR3, and XL with (perhaps slower) GDDR3?
I'm sure they'll find some way to compete with (a) product(s) similarly priced to the 8800 series.
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The_Wolf_Who_Cried_Boy
Newcomer
Whether ATI use GDDR3 or 4, they still need 16 of them relative to G8800 needing 12 at most, they will always be at a >30% cost disadvantage for memory.
As a sidenote what would a GDDR3/4 chip cost wholesale? (A quick google didn't reveal anything)
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This page puts the cost price of a 700MHz K4J55323QG at ~$US20, I'd guestimate from that a K4U52324QE would be in the ballpark of $US40. (?)
As a sidenote what would a GDDR3/4 chip cost wholesale? (A quick google didn't reveal anything)
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This page puts the cost price of a 700MHz K4J55323QG at ~$US20, I'd guestimate from that a K4U52324QE would be in the ballpark of $US40. (?)
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They could probably disable a few channels for the lower end stuff. I don't think they would need 16. Even the 8800GTS has less memory chips and a disabled memory channel.
Jawed
Legend
I've seen a report that some 8800GTSs come with all 12 chips installed
Can't find it again, though 
Jawed
Sound_Card
Regular
Memory side of R600 will be expensive for sure. However... Considering that R600 is 80nm and has a smaller die than G80, that should help balance a little?
I wonder even if UFO will have 512bit wide bus? It could have something like 384bit 784mb GDDR3.
I wonder even if UFO will have 512bit wide bus? It could have something like 384bit 784mb GDDR3.
Look if R600 comes with 1GB ram, 512bit wide bus, 32TMUS and 64 shaders (hoping for 96) @ 550-600 i'll buy it. That's a good deal. I could honestly care less that with that beast they're probably barely eeking a profit. Thats the price of competition. For a consumer there should be no moral dillema. Feeling bad for a company is like feeling bad for the devil. "But hell is almost overbooked!"
Well here's a pic to put your mind at ease.I've seen a report that some 8800GTSs come with all 12 chips installed
Jawed
http://img520.imageshack.us/img520/1442/g80in0456zv1.jpg
Why does it has to be Samsung brand?
I'm not sure but I thought Micron company was also working on this project....
Bahh, so that goddamn picture started it...I still maintain that tracing it, especially considering it`s 80nm, will be hell. Peharps the very high pin-count is given by the high clock-speed they`re targetting...or perhaps it really is 512-bit. Time will tell
The_Wolf_Who_Cried_Boy
Newcomer
Would it really need that many additional power and ground pins?
Quad core CPU's would have similar transistor budgets and make do as few as 771 pins.
Quad core CPU's would have similar transistor budgets and make do as few as 771 pins.
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