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AMD launches Radeon HD 6770 and HD 6750 by 'rebranding' old cards

by Tarinder Sandhu on 28 April 2011, 10:04


Quick Link: HEXUS.net/qa5qj

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A flurry of new press releases this morning have announced that AMD's partners are now retailing Radeon HD 6750 and HD 6770 cards.

New launches are usually accompanied by a comprehensive, in-depth review at HEXUS, but we've heard nary a word from AMD on these 'new' cards. The reason for this silence appears to centre on AMD wanting to slip these mid-range GPUs in with the minimum of fuss. Why? Because, in the main, they're rebranded HD 5770 and HD 5750 GPUs.

Let's spell it out with ye old table.

HD 6790
HD 6770
HD 5770
HD 6750
HD 5750
Transistors 1.75bn 1.04bn 1.04bn 1.04bn 1.04bn
Die size 255mm² 170mm² 170mm² 170mm² 170mm²
General clock 840MHz 850MHz 850MHz 700MHz 700MHz
Shader clock 840MHz 850MHz 850MHz 700MHz 700MHz
Memory clock 4,200MHz 4,800MHz 4,800MHz 4,600MHz 4,600MHz
Memory size 1,024MB GDDR5 1,024MB GDDR5 1,024MB GDDR5 1,024MB GDDR5 1,024MB GDDR5
Memory interface 256-bit 128-bit 128-bit 128-bit 128-bit
Memory bandwidth 134.4GB/s 76.8GB/s 76.8GB/s 73.6GB/s 73.6GB/s
Shaders 800 800 800 720 720
GFLOPS 1,340 1,360 1,360 1,008 1,008
Texturing 40ppc bilinear
20ppc FP16
40ppc bilinear
20ppc FP16
40ppc bilinear
20ppc FP16
36ppc bilinear
18ppc FP16
36ppc bilinear
18ppc FP16
ROPs 16 16 16 16 16
ROP rate 13.4 13.6 13.6 11.2 11.2
GTexel/s bilinear 33.6 34 34 28 28
FP16 rate 16.8 17 17 14 14
Board power (TDP) 150W 108W 108W 86W 86W
Retail price £105 ? £95 ? £85

The table shows that there is no obvious difference between the specifications of the two sets of cards - HD 6770 vs. HD 5770 and HD 6750 vs. HD 5750. What's more, they're both based on the Juniper core, rather than the Barts LE of the HD 6790.

So how can AMD get away with simply increasing the generation number without any meaningful change in specifications, you may be asking? Well, the HD 6770/50 are slightly different, insofar as they have the very last Unified Video Decoder (UVD) block present in the silicon. Version 3 enables DisplayPort v1.2, HDMI 1.4a, and hardware-based acceleration for Multi-View (MVC, Blu-ray 3D) DivX and Xvid codecs.

But that's your lot, folks, so don't be expecting a brand-new architecture in these mainstream offerings. Indeed, researching further, AMD snuck these under the radar back in January, in OEM form, to large system builders such as Dell.

While increasing the model number is nothing new, for AMD and NVIDIA are both past-masters at rebranding older GPUs as newer iterations, are you miffed at AMD's rebrand this time around, or do you consider it, well, par for the course these days? We'd love to hear your thoughts in the forums.


HEXUS Forums :: 12 Comments

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AMD fail!!
After nVidia's 8800/9800/240 line, nothing surprises me.
You would've thought with the flak nVidia got for it, AMD would steer well clear.

But I guess nVidia are the ones with the biggest fanboy camp, so perhaps copying their mistakes is the right thing to do :(
I guess it pay$ to keep up with what's going on.
At least there are some new features in the hardware, albeit minor ones.