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Radeon HD 6950 vs Radeon HD 7750


The Radeon HD 6950 makes use of a 40 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 RAM runs at a frequency of 1250 MHz on this model. It features 1408 SPUs as well as 88 TAUs and 32 Rasterization Operator Units.

Compare those specs to the Radeon HD 7750, which makes use of a 28 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 memory works at a speed of 1125 MHz on this particular card. It features 512 SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750 55 Watts
Radeon HD 6950 200 Watts
Difference: 145 Watts (264%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6950 should perform much faster than the Radeon HD 7750 overall. (explain)

Radeon HD 6950 160000 MB/sec
Radeon HD 7750 72000 MB/sec
Difference: 88000 (122%)

Texel Rate

The Radeon HD 6950 will be a lot (about 175%) more effective at AF than the Radeon HD 7750. (explain)

Radeon HD 6950 70400 Mtexels/sec
Radeon HD 7750 25600 Mtexels/sec
Difference: 44800 (175%)

Pixel Rate

The Radeon HD 6950 is a lot (about 100%) better at FSAA than the Radeon HD 7750, and able to handle higher resolutions more effectively. (explain)

Radeon HD 6950 25600 Mpixels/sec
Radeon HD 7750 12800 Mpixels/sec
Difference: 12800 (100%)

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 6950

Radeon HD 7750

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.


Display Specifications

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Model Radeon HD 6950 Radeon HD 7750
Manufacturer AMD AMD
Year December 2010 February 2012
Code Name Cayman Pro Cape Verde Pro
Memory 1024 MB 1024 MB
Core Speed 800 MHz 800 MHz
Memory Speed 5000 MHz 4500 MHz
Power (Max TDP) 200 watts 55 watts
Bandwidth 160000 MB/sec 72000 MB/sec
Texel Rate 70400 Mtexels/sec 25600 Mtexels/sec
Pixel Rate 25600 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 1408 512
Texture Mapping Units 88 32
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 2640 million 1500 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.2

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 amount of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.


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