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DDR3 Reaches 2032 - Page 4

post #31 of 33
Quote:
Originally Posted by Ihatethedukes View Post
Quote:
1000mhz is 1ns, cas10x1ns = 10ns so this is about as fast as running Cas5 at 1000MHZ DDR.

Now if he was running Cas9 at 1000MHZ (2000DDR) i would have been impressed
Quote from Tony at XS.

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post #32 of 33
Question: What's the difference between GDDR3 and DDR3? Isn't one just direct at graphics cards and the other DRAM, even though they are essentially the same thing?

Just wondering why we didn't have DDR3 sooner, like instead of DDR2 since it was already on GPU's and obviously kicks arse...
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post #33 of 33
Is the bandwidth really going to be worth the performance penalty? Those timings are ludicrous!

Quote:
Originally Posted by kidwolf909 View Post
Question: What's the difference between GDDR3 and DDR3? Isn't one just direct at graphics cards and the other DRAM, even though they are essentially the same thing?

Just wondering why we didn't have DDR3 sooner, like instead of DDR2 since it was already on GPU's and obviously kicks arse...
Here's what the Wikipedia article says:

Quote:
GDDR3, Graphics Double Data Rate 3, is a graphics card-specific memory technology, designed by ATI Technologies.

It has much the same technological base as DDR2, but the power and heat dispersal requirements have been reduced somewhat, allowing for higher-speed memory modules, and simplified cooling systems. Unlike the DDR2 used on graphics cards, GDDR3 is unrelated to the upcoming JEDEC DDR3 specification. This memory uses internal terminators, enabling it to better handle certain graphics demands. To improve bandwidth, GDDR3 memory transfers 4 bits of data per pin in 2 clock cycles.

Despite being designed by ATI, the first card to use the technology was nVidia's GeForce FX 5700 Ultra, where it replaced the DDR2 modules used up to that time. The next card to use GDDR3 was nVidia's GeForce 6800 Ultra, where it was key in maintaining reasonable power requirements compared to the card's predecessor, the GeForce 5950 Ultra. ATI began using the memory on its Radeon X800 cards. GDDR3 is Sony's choice for the PlayStation 3 gaming console's graphics processor, although the main system memory is comprised of XDR DRAM. Microsoft's Xbox 360 is also shipped with 512 MiB of GDDR3 memory, and is helping to pioneer the use of this memory as standard system memory rather than only video memory.
    
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