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[vr-zone] RV770 & GT200 specs chart - Page 2

post #11 of 48
Quote:
Originally Posted by skunksmash View Post
am i right in thinking the ram on the 4870 is running nearly 4ghz stock ...
Where are you seeing that?
    
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post #12 of 48
Quote:
Originally Posted by Arjy View Post
Where are you seeing that?
RAM is listed as running 1935MHz, but because it's DDR it is really double that, or 3870MHz. (Ironic, I know)

Should be easy to O/C this up to 4GHz
post #13 of 48
Quote:
Originally Posted by darkcloud89 View Post
RAM is listed as running 1935MHz, but because it's DDR it is really double that, or 3870MHz. (Ironic, I know).
Oh, I assumed those speed were after its being doubled. EDIT: After looking again, you're right.
    
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post #14 of 48
After that fat odl chunk of GDDR5 memory why dont the ATI have a better memory bandwith than the Nvidea counterpart...
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post #15 of 48
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Originally Posted by Panderas View Post
After that fat odl chunk of GDDR5 memory why dont the ATI have a better memory bandwith than the Nvidea counterpart...
Bigger bus. ATI still lacks in pixel fill-rate.
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post #16 of 48
Quote:
Originally Posted by Panderas View Post
After that fat odl chunk of GDDR5 memory why dont the ATI have a better memory bandwith than the Nvidea counterpart...
It's not clocked fast enough to make up entirely for the difference in bus width:

RV770XT: 3.87GHz * (256/8) = 123.84GB/s
GT200: 2.2GHz * (512/8) = 140.8GB/s

So really, the two have a difference of 17GB/s. But, overall bandwidth isn't everything. The GT200's bandwidth is a 13.7% increase over the RV770XT, but that isn't a huge advantage given the cost of implementing the 512-bit interafce not only in terms of the actual cost to buy the card, but the additional die space it takes up. It's all a compromise to get the required amount of bandwidth to the processor, and ATI/Nvidia just took different paths to get there. The bandwidth difference probably isn't big enough to be THE deciding factor between the two cards anyway. Will the GT200 beat the RV770XT? Probably, but more bandwidth isn't likely to give the RV770 a better chance, the real competition comes in the form of the RV700, which thanks to the die size and power requirements of the GT200 Nvidia won't be able to answer to quickly by slapping two of them together (instead, they'll release a die-shrink version of the GT200).
Edited by darkcloud89 - 5/26/08 at 8:08am
post #17 of 48
Quote:
Originally Posted by stargate125645 View Post
2) How am I supposed to believe this when they have the 8800 Ultra as retailing for $830? It never was that high.
Wasn't that their initial launch price, which dropped down below $800 within weeks of its launch?
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post #18 of 48
Quote:
Originally Posted by RayvinAzn View Post
Wasn't that their initial launch price, which dropped down below $800 within weeks of its launch?
$830 was indeed the launch price. A lot of places it even sold for ~$1000+. It didn't stay that high very long, but prices are always high at release.
post #19 of 48
Quote:
Originally Posted by darkcloud89 View Post
$830 was indeed the launch price. A lot of places it even sold for ~$1000+. It didn't stay that high very long, but prices are always high at release.
Ridiculous.
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post #20 of 48
That RV770XT is looking good.
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