"The GT200 with DDR5 would Absolutely Destroy Utterly the 4870"

palladium

Senior member
Dec 24, 2007
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Part of a comment from an old AT article (here).

Here is another remark from the same poster that deserves a LOL:

Gosh, the GT200 with DDR5 huh - no how about the G92/9800GTX with DDR5 - gueess what ? THAT'S EQUIVALENT TO A 4870 !

Apart from his wild fanboism, this guy doesn't seem to understand that all GDDR5 provides is extra memory bandwidth - it doesn't matter jack if the GPU core cannot use them.

Someone ought to slap some sense into this guy - perhaps I would reply to his next comment, maybe when AT publishes the GT300 vs RV800 article.



Why don't you address the person's comments over at the main AT site...instead of posting a callout thread about it here. Alternatively, feel free to create a new thread to discuss the technical aspect, but without the callout.

AmberClad
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Scali

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Dec 3, 2004
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Originally posted by: palladium
Apart from his wild fanboism, this guy doesn't seem to understand that all GDDR5 provides is extra memory bandwidth - it doesn't matter jack if the GPU core cannot use them.

He understands that. He's just saying that the GPU core COULD use more bandwidth if it were available.
Problem with the G92 core is that it only has a 256 bit bus for GDDR3. They've taken the memory about as far as it will go, at 2.2+ GHz. So you can't get more bandwidth out of 256-bit GDDR3, even though the G92 core may be able to use it.
With GDDR5 you could suddenly get a lot more out of a 256-bit interface, which he believes will increase performance on the G92.
I think that's quite sensible really. One way to see if he's right is to try and overclock the memory on an G92 card with some extreme cooling solution, to get it past 2.2 GHz, and simulate what GDDR5 could do for the core.
 

exar333

Diamond Member
Feb 7, 2004
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I would guess GDDR5 would help a little in some cases, but you wouldn't see substantial gains unless you are in a very bandwith-starved situation such as extremely high resolutions.