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Radeon HD 5670 vs Radeon HD 5770

Intro

The Radeon HD 5670 features clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 400(80x5) SPUs as well as 20 TAUs and 8 ROPs.

Compare all of that to the Radeon HD 5770, which makes use of a 40 nm design. AMD has set the core speed at 850 MHz. The GDDR5 RAM runs at a frequency of 1200 MHz on this particular card. It features 800(160x5) SPUs as well as 40 TAUs and 16 ROPs.

Avatar

Settings: Ultra High Quality
AA: 8x
AF: none
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
Radeon HD 5770 37 FPS
Radeon HD 5670 25 FPS
Difference: 12 FPS (48%)

Battlefield Bad Company 2

Settings: High Quality
AA: 4x
AF: 8x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
Radeon HD 5770 30 FPS
Radeon HD 5670 19 FPS
Difference: 11 FPS (58%)

Left4Dead 2

Settings: Very High
AA: 8x
AF: 16x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
Radeon HD 5770 70 FPS
Radeon HD 5670 49 FPS
Difference: 21 FPS (43%)

Mass Effect 2

Settings: Maximum Quality
AA: none
AF: 8x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
Radeon HD 5770 87 FPS
Radeon HD 5670 57 FPS
Difference: 30 FPS (53%)

Supreme Commander 2

Settings: High
AA: 8x
AF: 16x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
Radeon HD 5770 62 FPS
Radeon HD 5670 37 FPS
Difference: 25 FPS (68%)

Radeon HD 5770 wins

(Based entirely on the benchmarks listed above)

When combining all game benchmark scores on this page together, the Radeon HD 5770 wins overall, by 99 FPS. Please note that we do not have the results of every benchmark ever done for these cards, so the results may differ wildly in different games.

Radeon HD 5770 286 FPS
Radeon HD 5670 187 FPS
Difference: 99 FPS (53%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670 61 Watts
Radeon HD 5770 108 Watts
Difference: 47 Watts (77%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5770 should theoretically be a bit better than the Radeon HD 5670 in general. (explain)

Radeon HD 5770 76800 MB/sec
Radeon HD 5670 64000 MB/sec
Difference: 12800 (20%)

Texel Rate

The Radeon HD 5770 will be quite a bit (approximately 119%) faster with regards to anisotropic filtering than the Radeon HD 5670. (explain)

Radeon HD 5770 34000 Mtexels/sec
Radeon HD 5670 15500 Mtexels/sec
Difference: 18500 (119%)

Pixel Rate

The Radeon HD 5770 should be much (about 119%) faster with regards to FSAA than the Radeon HD 5670, and capable of handling higher resolutions better. (explain)

Radeon HD 5770 13600 Mpixels/sec
Radeon HD 5670 6200 Mpixels/sec
Difference: 7400 (119%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Radeon HD 5670

Amazon.com

Radeon HD 5770

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

Model Radeon HD 5670 Radeon HD 5770
Manufacturer AMD AMD
Year January 14, 2010 October 13, 2009
Code Name Redwood XT Juniper XT
Fab Process 40 nm 40 nm
Bus PCIe 2.1 x16 PCIe 2.1 x16
Memory 1024 MB 1024 MB
Core Speed 775 MHz 850 MHz
Shader Speed N/A MHz (N/A) MHz
Memory Speed 1000 MHz (4000 MHz effective) 1200 MHz (4800 MHz effective)
Unified Shaders 400(80x5) 800(160x5)
Texture Mapping Units 20 40
Render Output Units 8 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 3.2
Power (Max TDP) 61 watts 108 watts
Shader Model 5.0 5.0
Bandwidth 64000 MB/sec 76800 MB/sec
Texel Rate 15500 Mtexels/sec 34000 Mtexels/sec
Pixel Rate 6200 Mpixels/sec 13600 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Comments

5 Responses to “Radeon HD 5670 vs Radeon HD 5770”
Grant says:
5770 FTW!
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