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Radeon HD 5670 vs Radeon R7 250

Intro

The Radeon HD 5670 uses a 40 nm design. AMD has set the core speed at 775 MHz. The GDDR5 memory is set to run at a speed of 1000 MHz on this particular model. It features 400(80x5) SPUs as well as 20 TAUs and 8 Rasterization Operator Units.

Compare those specs to the Radeon R7 250, which comes with clock speeds of 1000 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 memory. It features 384 SPUs along with 24 TAUs and 8 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670 61 Watts
Radeon R7 250 65 Watts
Difference: 4 Watts (7%)

Memory Bandwidth

Performance-wise, the Radeon R7 250 should theoretically be a bit better than the Radeon HD 5670 in general. (explain)

Radeon R7 250 73600 MB/sec
Radeon HD 5670 64000 MB/sec
Difference: 9600 (15%)

Texel Rate

The Radeon R7 250 is much (about 55%) more effective at texture filtering than the Radeon HD 5670. (explain)

Radeon R7 250 24000 Mtexels/sec
Radeon HD 5670 15500 Mtexels/sec
Difference: 8500 (55%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R7 250 is a better choice, by far. (explain)

Radeon R7 250 8000 Mpixels/sec
Radeon HD 5670 6200 Mpixels/sec
Difference: 1800 (29%)

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 R7 250

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 R7 250
Manufacturer AMD AMD
Year January 14, 2010 October 2013
Code Name Redwood XT Oland XT
Memory 1024 MB 1024 MB
Core Speed 775 MHz 1000 MHz
Memory Speed 4000 MHz 4600 MHz
Power (Max TDP) 61 watts 65 watts
Bandwidth 64000 MB/sec 73600 MB/sec
Texel Rate 15500 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 6200 Mpixels/sec 8000 Mpixels/sec
Unified Shaders 400(80x5) 384
Texture Mapping Units 20 24
Render Output Units 8 8
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 627 million 1040 million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 3.2 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount 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, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 5670

Amazon.com

Check prices at:

Radeon R7 250

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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