Radeon HD 7000 Series

LeoSnow900

LeoSnow900

New Member
I've been searchin around, and guess what I found...

Specs on the 7000 series

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Following are the Tahiti, Thames and Lombok based GPU details:

HD 7970: 256bit/1000MHz/32CUs/2048ALUs/128TMUs/64ROPs/XDR2 8.0Gbps 256GB/S /190W TDP/ 2GB Memory
HD 7950: 256bit/900MHz/30CUs/1920ALUs/120TMUs/64ROPs/XDR2 7.2Gbps 230GB/S /150W TDP/ 2GB Memory
The HD7970 (Tahiti XT) will replace the current HD6970 (Cayman XT) Card, It would feature 2048 Stream Processors running at 1000Mhz with a max 190W TDP and 2GB GDDR5 256bit wide Memory interface compared to the 1536 Stream Processors @ 880Mhz of the HD6970 GPU.

The HD7950 (Tahiti Pro) would be the replacement for HD6950 (Cayman Pro) featuring 1920 Steam Processors clocked at 900Mhz with a 2GB memory buffer and rated TDP of 150W, While the older 6950 featured 1408 Stream Processors clocked at 800Mhz and 160GB/s memory bandwidth compared to 7950Œs 230GB/s.

Next up are the Thames XT and Thames Pro Based GPUfs:

HD 7870: 950MHz/24SIMDs/1536ALUs/96TMUs/32ROPs/256bit GDDR5 5.8Gbps 186GB/S /2GB/ TDP 120W
HD 7850: 850MHz/22SIMDs/1408ALUs/88TMUs/32ROPs/256bit GDDR5 5.2Gbps 166GB/S /2GB/ TDP 90W

he HD7870 (Thames XT) with its 1536 Steam Processor (Equivalent of HD6970) clocked at a higher 950Mhz Core clock, 32 ROPfs and 2GB 256-bit wide memory interface would replace the HD6870 (Barts XT) which had 1120 Stream Processors running at 900mhz. The HD7870 has a max TDP of 120W.

The HD 7850 (Thames Pro) will feature 1408 Stream Processors and 166GB Memory Bandwidth with its 2GB 256-bit wide memory interface rated at 5.2GBps. This would replace the Barts Pro based HD6850 960 Stream Processors at 775Mhz.

Last up is AMDfs Entry level or Low Profile lineup based on the Lombok Core. The Two GPUfs included in this lineup are:

HD 7670: 12SIMDs/768ALUs/48TMUs/16ROPs/900MHz/128bit/GDDR5 5.0Gbps 80GB/S /1GB/TDP 60W
HD 7570: 750MHz/12SIMDs/768ALUs/48TMUs/16ROPs/128bit GDDR5 4.0Gbps 64GB/s/1GB/50W TDP

Site: CLICK!!!
 
I read somewhere that this will be PCI 3.0. If it is, will it be backwards compatible with PCI 2.0?
 
all pci-e x16's work together, just the 3.0 should be faster, although the 2.0 isn't even taken advantage of fully, and i doubt they'd use xdr2 if they hadn't tested it and found it faster.
 
jonnyp11 said:
all pci-e x16's work together, just the 3.0 should be faster, although the 2.0 isn't even taken advantage of fully, and i doubt they'd use xdr2 if they hadn't tested it and found it faster.
Click to expand...

No, 3.0 is not faster, it simply has greater bandwidth. As we aren't using x8 fully, it is pretty pointless at this point
 
no, i think that's x8, cuz i remeber them saying x4 drops performance a good bit but x8 is almost the same if not the same performance as x16
 
hd's aren't made for amd mobo's, and there are am3 boards that only support the nvidia gfx cards, the 3rd party dvelopers like asus and gigabyte that manufacture the board itself program that stuff.
 
LeoSnow900 said:
How would you loose more with an AMD board when the chipsets of the Radeon HD series are made by AMD? They are made for use on an AMD board.
Click to expand...

Whats that got to do with anything. On a Intel board, the second X4 PCIe slot runs off the northbridge.

On a AMD it runs off the southbridge. The 4 lanes are really for the PCIe X1 slots. A 770/870/970 are not meant to be a crossfire board. Some board manufacturers cheat, put a second PCIe X16 slot and divert the lanes from the PCIe X1 slots. If you use the second PCIe X16 slot, it disables the PCIe X1 slots. I'm suprised AMD hasnt put a stop to it. The 790/890/990 X/GX/FX are the only true crossfire boards.
 
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