Hynix Shows The Fastest 1Gb GDDR5 Graphics DRAM
Yesterday Hynix Semiconductor announced the first and fastest graphics DRAM in the whole industry.
Built on 54nm technology, 1Gb GDDR5 works on 1.35V voltage. It runs at high speed of 7Gbps, which means itβs 40% faster than current 5Gbps GDDR5. It can process up to 28 Gigabytes of data per second with 32-bit interface.
Hynix 1Gb GDDR5 graphics DRAM totally meets JEDEC Standard, and its volume production is scheduled to happen in the first half of next year. It mainly targets at high-end graphics cards and game PCs.
November 24th, 2008 at 9:15 pm
That’s a pretty big jump. Current GDDR5 on a Radeon 4870 gives us 115GB/s while this would scale up to 179GB/s on a 256-bit bus. Not bad at all, even when you consider the 512-bit GTX 280 pushing 140GB/s.
However, I don’t think we will see these in action until next-gen.
November 27th, 2008 at 6:04 am
7Gbps GDDR5 would be 224Gbps on a 256-bit bus.
7000×256/8 = 224000 bps
My guess is that the R800 series will use 1 gigabit 5Gbp/s on the lower-end, and this on the higher end. Perhaps a reference clock of something like 4700mhz for a 5850 (150Gbp/s) and 6250mhz (200Gbp/s) on a 5870, if they use a 256-bit bus. Half those if it’s 128-bit (per chip) or twice that if it’s 512-bit (per card). Doesn’t seem out of the question if you consider the rumors of a single core “little dragon’ being 1.2x Rv770 (960sp/48Tmus), and the possibility of a dual-core package.