ATI Radeon HD 4870 X2

[IamBatosai]

Review.

 

This is one beast of a card. A couple specs taken from the above review.

 

The RV770 GPUs on our early sample are clocked at 750MHz, the same speed as the regular 4870. As a result, the X2's 1600 total stream processors have a peak computational rate of 2.4 teraflops.

 

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We do know, however, that the two GPUs on the card don't share memory. The board has eight Hynix GDDR5 memory chips per graphics processor, four on the front and another four around back. Those chips are 1Gb each, so each GPU has a total of one gigabyte of memory to call its own. Cumulatively, 4870 X2's effective memory size is still 1GB, since data must be replicated into each GPU's memory space.

 

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Although the Hynix chips on our engineering sample are rated for up to 4Gbps operation, on this board, they run at the same 900MHz base clock and 3600MT/s data rate as on the Radeon HD 4870. That ain't exactly shabby, though. All told, the R700 has an aggregate 512-bit path to memory that theoretically peaks at 230GB/s. To put that into perspective, its likely closest competitor, the GeForce GTX 280, has "only" 142GB/s of peak memory bandwidth.

 

Looks like ATI is finally pushing past NVidia. This is when you get the good cards. When both companies have cards that are about the same for they're high end line. And they are pushing to be better.

 

Can't wait for this to release!