Tuesday, May 5th 2009
GT300 to Boast Around 256 GB/s Memory Bandwidth
Recently, early-information on NVIDIA's next-generation GT300 graphics processor surfaced, that suggested it to pack 512 shader processors, and an enhanced processing model. A fresh report from Hardware-Infos sheds some light on its memory interface, revealing it to be stronger than that of any production GPU. According to a piece of information that has been doing ping-pong between Hardware-Infos and Bright Side of News, GT300 might feature a 512-bit wide GDDR5 memory interface.
The memory interface in conjunction with the use of the lowest latency GDDR5 memory available, at a theoretical 1000 MHz (2000 MHz DDR) would churn out 256 GB/s of bandwidth, the highest for a GPU so far. Although Hardware-Infos puts the lowest-latency figure at 0.5 ns, the math wouldn't work out. At 0.5 ns, memory with actual clock rate of 1000 MHz would churn out 512 GB/s, so a slight inaccuracy there. Qimonda's IDGV1G-05A1F1C-40X leads production today with its "40X" rating. With these chips across a 512-bit interface, the 256 GB/s bandwidth equation is satisfied. The clock speeds of the memory isn't known just as yet, the above is just an example that uses the commonly available high-performance GDDR5 memory chip. The new GPU, at least from these little information leaks, is shaping up to be another silicon-monstrosity by NVIDIA in the making.
Source:
Hardware-Infos
The memory interface in conjunction with the use of the lowest latency GDDR5 memory available, at a theoretical 1000 MHz (2000 MHz DDR) would churn out 256 GB/s of bandwidth, the highest for a GPU so far. Although Hardware-Infos puts the lowest-latency figure at 0.5 ns, the math wouldn't work out. At 0.5 ns, memory with actual clock rate of 1000 MHz would churn out 512 GB/s, so a slight inaccuracy there. Qimonda's IDGV1G-05A1F1C-40X leads production today with its "40X" rating. With these chips across a 512-bit interface, the 256 GB/s bandwidth equation is satisfied. The clock speeds of the memory isn't known just as yet, the above is just an example that uses the commonly available high-performance GDDR5 memory chip. The new GPU, at least from these little information leaks, is shaping up to be another silicon-monstrosity by NVIDIA in the making.
106 Comments on GT300 to Boast Around 256 GB/s Memory Bandwidth
i do hope its true and ati have somthing lined up to counter as i dont want to see nv sit on their ass for a year again just milking the one core like they did the g80, and again with the g92.
my awesome 8600GT runs WiC(High settings) at...
So such a card would be needed in my rig:(
Please, even if you put them up F/S and donate to charity or site upkeep. Damn! That's alot of cards.
Probably keep them around for review purposes though eh?
Or does the card plug into an external box then a cable goes from that to the mobo
yes it measures pcie bus power too
Edit: I had to put a laugh at the end of that one. Someone may think I'm serious.
@ Wiz: Very nice. This will help alot in your reviews, which are already jam packed with information.