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Radeon HD 5670 vs Radeon HD 7750

Intro

The Radeon HD 5670 makes use of a 40 nm design. AMD has set the core speed at 775 MHz. The GDDR5 RAM works at a frequency of 1000 MHz on this specific card. It features 400(80x5) SPUs along with 20 TAUs and 8 ROPs.

Compare those specs to the Radeon HD 7750, which features a clock frequency of 800 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is made up of 512 SPUs, 32 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750 55 Watts
Radeon HD 5670 61 Watts
Difference: 6 Watts (11%)

Memory Bandwidth

The Radeon HD 7750 should in theory be a small bit faster than the Radeon HD 5670 in general. (explain)

Radeon HD 7750 72000 MB/sec
Radeon HD 5670 64000 MB/sec
Difference: 8000 (13%)

Texel Rate

The Radeon HD 7750 will be quite a bit (approximately 65%) better at anisotropic filtering than the Radeon HD 5670. (explain)

Radeon HD 7750 25600 Mtexels/sec
Radeon HD 5670 15500 Mtexels/sec
Difference: 10100 (65%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 7750 is a better choice, by a large margin. (explain)

Radeon HD 7750 12800 Mpixels/sec
Radeon HD 5670 6200 Mpixels/sec
Difference: 6600 (106%)

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 5670

Amazon.com

Check prices at:

Radeon HD 7750

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.

Specifications

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Model Radeon HD 5670 Radeon HD 7750
Manufacturer AMD AMD
Year January 14, 2010 February 2012
Code Name Redwood XT Cape Verde Pro
Memory 1024 MB 1024 MB
Core Speed 775 MHz 800 MHz
Memory Speed 4000 MHz 4500 MHz
Power (Max TDP) 61 watts 55 watts
Bandwidth 64000 MB/sec 72000 MB/sec
Texel Rate 15500 Mtexels/sec 25600 Mtexels/sec
Pixel Rate 6200 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 400(80x5) 512
Texture Mapping Units 20 32
Render Output Units 8 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 627 million 1500 million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 3.2 OpenGL 4.2

Memory Bandwidth: Bandwidth is the largest amount of information (measured in MB per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is worked out by multiplying the total amount of texture units by the core clock 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock 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 many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 5670

Amazon.com

Check prices at:

Radeon HD 7750

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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