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[NHW] RV740 ES using GDDR5 - Page 3

post #21 of 41
Interesting, 64bit with GDDR5, vs 128bit with GDDR3

However, how much of a difference does it make, and this can only be applied on their entry level cards with low bandwidth. With their top of the line cards, they still have to make their chips with 256bit bus, and pair that with GDDR5, it might not even be enough in the future.

Just thinking out loud, I think one way they could go with more benefits is if they put multi(2+) GPUs on the board. By using multiple small and efficient GPUs instead of huge single GPU to get the same processing power. They could increase their yield and reduce cost.

I.e.
HD6830 = 1 GPU
HD6850 = 2 GPUs
HD6870 = 3 GPUs
Edited by Renesis_8 - 12/17/08 at 8:25pm
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post #22 of 41
Quote:
Originally Posted by Renesis_8 View Post
Interesting, 64bit with GDDR5, vs 128bit with GDDR3

However, how much of a difference does it make, and this can only be applied on their entry level cards with low bandwidth. With their top of the line cards, they still have to make their chips with 256bit bus, and pair that with GDDR5, it might not even be enough in the future.

Just thinking out loud, I think one way they could go with more benefits is if they put multi(2+) GPUs on the board. By using multiple small and efficient GPUs instead of huge single GPU to get the same processing power. They could increase their yield and reduce cost.

I.e.
HD6830 = 1 GPU
HD6850 = 2 GPUs
HD6870 = 3 GPUs
sounds like a decent idea, except for PCB real estate :/
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post #23 of 41
Quote:
Originally Posted by zomgiwin View Post
sounds like a decent idea, except for PCB real estate :/
Yes, 2 seems like the limit now, but I am sure they can come up with ways to fit 3.
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post #24 of 41
Quote:
Originally Posted by Renesis_8 View Post
Yes, 2 seems like the limit now, but I am sure they can come up with ways to fit 3.
Sandwiches for 4!

(Though heat may be an issue if they're sharing 1 heatsink)
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post #25 of 41
Quote:
Originally Posted by sLowEnd View Post
Sandwiches for 4!

(Though heat may be an issue if they're sharing 1 heatsink)
And what if you put the boards in opposite directions! OMG! THE POSSIBILITIES!

If we turn this around... OGMOGMOGMOGMOGMOMOMOGMOGMOGM :O
post #26 of 41
uhh how did you guys not get that ATI Rage Pro wouldn't be able to run crisis let alone outperform 260's 216 sp in SLI and that they were obviously fabricated as a joke.

does anyone get jokes anymore?
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post #27 of 41
Forgive my ignorance but whats the 740, i know the 4670 is the 730 or something and we all know what the 770 is

Is it some updated version of the 730 or something or is it going to be the 47xx series etc

But really it makes sense using gddr5 chips and a smaller memory bus on the lower end cards, they save money on using a smaller memory bus on each different core chip, say 256bit on performance parts, 128bit on mainstream and 64bit on entry market

Doing so would enable them to buy gddr5 in bulk since it'd be used on all their chips and buying such massive quantities would lower cost for them, not to mention saving silicon on the actual gpu itself and lowering costs that way but they also result in better performance on the lower end cards without much increase in costs compared with say needing a larger memory bus if they stuck to using gddr3 etc

it'd lower costs all around going forward not to mention the bragging rights for the company being able to say to consumers that they are using the latest tech on their low cards etc

It makes a whole lot of sense when you think about it in terms like that

I wonder how much of a boost a lower and card would get using this, throw it on even a 4550 and you'd get a real nice increase! And throw it on a 4670 and that'd rule for the price even more so

If ATI wanted im sure it wouldn't take too much to put a memory controller for the Gddr5 on the lower end chips in limited amounts and let their partners sell them as special cards etc but i doubt they would unless nvidia got too far ahead again
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post #28 of 41
Quote:
Originally Posted by AchunderG View Post
uhh how did you guys not get that ATI Rage Pro wouldn't be able to run crisis let alone outperform 260's 216 sp in SLI and that they were obviously fabricated as a joke.

does anyone get jokes anymore?
Arent jokes usually funny?

None of us took this seriously for a second. Thats why were all like
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post #29 of 41
Quote:
Originally Posted by Domino View Post
And what if you put the boards in opposite directions! OMG! THE POSSIBILITIES!

If we turn this around... OGMOGMOGMOGMOGMOMOMOGMOGMOGM :O
6 slot cards!
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post #30 of 41
Quote:
Originally Posted by Renesis_8 View Post
Interesting, 64bit with GDDR5, vs 128bit with GDDR3

However, how much of a difference does it make, and this can only be applied on their entry level cards with low bandwidth. With their top of the line cards, they still have to make their chips with 256bit bus, and pair that with GDDR5, it might not even be enough in the future.

Just thinking out loud, I think one way they could go with more benefits is if they put multi(2+) GPUs on the board. By using multiple small and efficient GPUs instead of huge single GPU to get the same processing power. They could increase their yield and reduce cost.

I.e.
HD6830 = 1 GPU
HD6850 = 2 GPUs
HD6870 = 3 GPUs

The difference is pretty big, but it won't be used by entry level cards.
Entry level will switch from DDR2 to normal DDR3 (yes the RAM kind, NOT the GDDR3 version). DDR3 chips are considered cheap now, and will be even cheaper as time goes.

DDR3 speeds range about 1.8Ghz-2Ghz for now. The 4670 1GB's using it.


However, the next midrange card (2009 Winter) should be 128-bit. GDDR5 has already reached 7Ghz in super chips, the more practical ones would range at 5Ghz or so. That amount of bandwidth is enough for a great midrange chip (40% faster than 9600GT possible) so no worries there.


RV870 will use 256-bit, though. I don't think GDDR3 will even be in the picture.
    
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