Monday, July 18th 2011
AMD Radeon HD 7000 Series to be PCI-Express 3.0 Compliant
AMD's next generation of graphics processors (GPUs) that will be branded under the HD 7000 series, are reported to be PCI-Express Generation 3 compliant. The desktop discrete graphics cards will feature PCI-Express 3.0 x16 bus interfaces, and will be fully backwards-compatible with older versions of the bus, including Gen 1 and Gen 2. Motherboards sold today feature Gen 2 PCI-E slots, although some of the very latest motherboards launched by major vendors feature PCI-Express 3.0 slots.
The new bus doubles the bandwidth over PCI-E 2.0, with 1 GB/s of bandwidth per lane, per direction. PCI-Express 3.0 x16 would have 32 GB/s (256 Gbps) of bandwidth at its disposal, 16 GB/s per direction. AMD's next generation of GPUs, codenamed "Southern Islands" will be built on the new 28 nm process at TSMC, and will upscale VLIW4 stream processors. Some of the first PC platforms to fully support PCI-Express 3.0 will be Intel's Sandy Bridge-E. Whether AMD's GPUs have hit a bandwidth bottleneck with PCI-E Gen 2, or is AMD trying to just be standards-compliant, is a different question altogether.
Source:
Donanim Haber
The new bus doubles the bandwidth over PCI-E 2.0, with 1 GB/s of bandwidth per lane, per direction. PCI-Express 3.0 x16 would have 32 GB/s (256 Gbps) of bandwidth at its disposal, 16 GB/s per direction. AMD's next generation of GPUs, codenamed "Southern Islands" will be built on the new 28 nm process at TSMC, and will upscale VLIW4 stream processors. Some of the first PC platforms to fully support PCI-Express 3.0 will be Intel's Sandy Bridge-E. Whether AMD's GPUs have hit a bandwidth bottleneck with PCI-E Gen 2, or is AMD trying to just be standards-compliant, is a different question altogether.
85 Comments on AMD Radeon HD 7000 Series to be PCI-Express 3.0 Compliant
now the question ive asked 3 times on TPU, does anyone know if the 990 AMD chipset is compatible?????:confused:
fair enuff ya dont know
I'm still saying that you don't need it though.
just that i feel pushed into it by all the win 7 lovers :p and by the manufacturers ,
i looked the other week for drivers for the latest ati graphics card i was thinking of getting, and they were vista/7 only :eek::twitch::cry:
www.amd.com/US/PRODUCTS/DESKTOP/CHIPSETS/9-SERIES-INTEGRATED/Pages/amd-990x-chipset.aspx
www.amd.com/US/PRODUCTS/DESKTOP/CHIPSETS/9-SERIES-INTEGRATED/Pages/amd-970-chipset.aspx
Nope
8b/10b Encoding to 128b/130b encoding
8 bits + 2 syncs bits to 128 bits + 2 sync bits
20% Overhead to 1.54% Overhead
4Gbps to 8Gbps(7.88Gbps actual)
5GT/s to 8GT/s
PCI-e links are for CPU<-->GPU talk
and GPU0 <---> GPU1 talk
but the SLI/CrossfireX bridges help with that but with every speed boost the need of those bridges vanish making it cheaper to make the gpus
(How cheaper, I wouldn't know)The internet never forgets HA HA!
N Ya those boards are still made to this day
But if it follows progression we will get 2000ish shaders
edit: going to find easier pictures
Future proofing
The SIMD Unit has 16 ALUs
A Compute Core has 64 ALUs
A Compute Array has 256 ALUs
The max possible compute arrays are 32
32x256 = 8192 ALUs
edit: I dunna know about GPUs forgiveh meh
ALUs = Shaders in GCN
Is there such a thing these days..
Far from 98 and 98 SE
ME, Vista both MS biggest mistakes.
My current computer runs Windows 7 better than any computer I had in the past ran XP, and at this point I could never imagine going back.
As for the actual topic at hand, I remain doubtful that there are any cards that are actually bottlenecking in PCIe because of a lack of bandwidth, especially since going from 16x -> 8x is only like a 1-3% performance drop. This is just a feature for AMD to tack onto the list to try and sell more cards.
And everyone thought I was insane when I kept on banging on the pci-e 3.0 8x and pci-e 2.0 bottlenecks for gpu makers. Maybe I am maybe not :toast:
Image where this can go now with all this PCI-Express 3.0 x16 would have 32 GB/s (256 Gbps) freedom.
PCI-e Express 3.0 x8(when all slots are used)
All GPUs will get 126.1Gbps(15.8GB/s) on PCI Express 2.0 8x 53.3Gbps(6.6GB/s) a significant boost(Yes, PCI-Express 3.0 8x is 18.46% faster than PCI-Express 2.0 16x)
And PCI-E 3.0 16x is 18.46% faster than PCI-Express 2.0 32x
Intel chipsets that support PCI-e 3.0 are
3x8
No word on any AMD Chipsets supporting PCI-e 3.0
Service packs, tons of megabytes of updates, and some care, did the trick. It is solid. It only has a slow startup. That's all I can complain.
They are going to stop providing security updates in April 2014, as per their latest announcement.
I haven't even got my hands on an HD5000 series and now here come the HD7000.
It is sad to be left out in the dust. :(