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Radeon HD 7750 vs Radeon HD 7850


The Radeon HD 7750 makes use of a 28 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 RAM works at a speed of 1125 MHz on this model. It features 512 SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Compare those specs to the Radeon HD 7850, which comes with core clock speeds of 860 MHz on the GPU, and 1200 MHz on the 2048 MB of GDDR5 memory. It features 1024 SPUs along with 64 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750 55 Watts
Radeon HD 7850 130 Watts
Difference: 75 Watts (136%)

Memory Bandwidth

The Radeon HD 7850 should theoretically be much faster than the Radeon HD 7750 overall. (explain)

Radeon HD 7850 153600 MB/sec
Radeon HD 7750 72000 MB/sec
Difference: 81600 (113%)

Texel Rate

The Radeon HD 7850 will be a lot (about 115%) more effective at anisotropic filtering than the Radeon HD 7750. (explain)

Radeon HD 7850 55040 Mtexels/sec
Radeon HD 7750 25600 Mtexels/sec
Difference: 29440 (115%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 7850 is superior to the Radeon HD 7750, by far. (explain)

Radeon HD 7850 27520 Mpixels/sec
Radeon HD 7750 12800 Mpixels/sec
Difference: 14720 (115%)

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 7750

Radeon HD 7850

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 7750 Radeon HD 7850
Manufacturer AMD AMD
Year February 2012 March 2012
Code Name Cape Verde Pro Pitcairn Pro
Memory 1024 MB 2048 MB
Core Speed 800 MHz 860 MHz
Memory Speed 4500 MHz 4800 MHz
Power (Max TDP) 55 watts 130 watts
Bandwidth 72000 MB/sec 153600 MB/sec
Texel Rate 25600 Mtexels/sec 55040 Mtexels/sec
Pixel Rate 12800 Mpixels/sec 27520 Mpixels/sec
Unified Shaders 512 1024
Texture Mapping Units 32 64
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 1500 million 2800 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.1 DirectX 11.1
OpenGL Version OpenGL 4.2 OpenGL 4.2

Memory Bandwidth: Bandwidth is the largest amount of data (in units of MB per second) that can be moved across the external memory interface within a second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, 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 number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core clock speed. 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 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 maximum fill rate.


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