Samsung releases fastest GDDR-4 SGRAM
 

512Mb GDDR-4 chips at 1.4Ghz? Samsung has them, ATI/NVIDIA will want them:

"If you pair a 384-bit wide G80 GPU with these chips, you will end up with around 134.4 GB/s, a third faster than the in the currently-available GeForce 8800GTX. However, even these chips won't be enough for the 8850/8900 to beat the R600 in terms of sheer memory bandwidth.

http://www.theinquirer.net/default.aspx?article=37559