Memory bandwidth is good; real good. That crude maxim has particular significance for GPU designers looking for ample 'space' to let their cutting-edge processors work at high resolutions and with realistic-looking effects.

To that end, if  ~1.2GHz-rated (2.4GBps) GDDR4 simply isn't fast enough, Samsung will be obliging the likes of NVIDIA and AMD with some ultra-high-speed GDDR5, operating at some 6Gbps per pin - more than double the fastest presently-shipping Samsung modules, K4U52324QE-BC070.

Given the module density of 512MBit (16MiB x 32), i.e. 32 pins, there's 24GiB/s on tap, too. Wowsers! What's more, operating voltage drops down to 1.5V from the incumbent 1.8V on GDDR4.

There's always a need for bandwidth, and GDDR5 is what brand-new, high-end GPUs will be equipped in the H2 2008, we reckon.

Source: Samsung.