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Radeon HD 5750 1GB vs Radeon HD 6950

Intro

The Radeon HD 5750 1GB has clock speeds of 700 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 RAM. It features 720(144x5) SPUs along with 36 Texture Address Units and 16 ROPs.

Compare those specs to the Radeon HD 6950, which features GPU core speed of 800 MHz, and 1024 MB of GDDR5 RAM running at 1250 MHz through a 256-bit bus. It also features 1408 Stream Processors, 88 Texture Address Units, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB 86 Watts
Radeon HD 6950 200 Watts
Difference: 114 Watts (133%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6950 should be much faster than the Radeon HD 5750 1GB overall. (explain)

Radeon HD 6950 160000 MB/sec
Radeon HD 5750 1GB 73600 MB/sec
Difference: 86400 (117%)

Texel Rate

The Radeon HD 6950 is quite a bit (about 179%) faster with regards to anisotropic filtering than the Radeon HD 5750 1GB. (explain)

Radeon HD 6950 70400 Mtexels/sec
Radeon HD 5750 1GB 25200 Mtexels/sec
Difference: 45200 (179%)

Pixel Rate

The Radeon HD 6950 will be quite a bit (about 129%) better at full screen anti-aliasing than the Radeon HD 5750 1GB, and capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 6950 25600 Mpixels/sec
Radeon HD 5750 1GB 11200 Mpixels/sec
Difference: 14400 (129%)

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

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Radeon HD 5750 1GB

Amazon.com

Check prices at:

Radeon HD 6950

Amazon.com

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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

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Model Radeon HD 5750 1GB Radeon HD 6950
Manufacturer AMD AMD
Year October 13, 2009 December 2010
Code Name Juniper LE Cayman Pro
Memory 1024 MB 1024 MB
Core Speed 700 MHz 800 MHz
Memory Speed 4600 MHz 5000 MHz
Power (Max TDP) 86 watts 200 watts
Bandwidth 73600 MB/sec 160000 MB/sec
Texel Rate 25200 Mtexels/sec 70400 Mtexels/sec
Pixel Rate 11200 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 720(144x5) 1408
Texture Mapping Units 36 88
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 1040 million 2640 million
Bus PCIe 2.1 x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of data (counted in megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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Radeon HD 5750 1GB

Amazon.com

Check prices at:

Radeon HD 6950

Amazon.com

Check prices at:

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.

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