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Radeon HD 5670 vs Radeon R9 M265X

Intro

The Radeon HD 5670 makes use of a 40 nm design. AMD has clocked the core frequency 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 all that to the Radeon R9 M265X, which makes use of a 28 nm design. AMD has clocked the core speed at 575 MHz. The GDDR5 memory works at a frequency of 1125 MHz on this model. It features 640 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M265X should perform just a bit faster than the Radeon HD 5670 in general. (explain)

Radeon R9 M265X 72000 MB/sec
Radeon HD 5670 64000 MB/sec
Difference: 8000 (13%)

Texel Rate

The Radeon R9 M265X is much (more or less 48%) better at texture filtering than the Radeon HD 5670. (explain)

Radeon R9 M265X 23000 Mtexels/sec
Radeon HD 5670 15500 Mtexels/sec
Difference: 7500 (48%)

Pixel Rate

The Radeon R9 M265X is a lot (approximately 48%) faster with regards to AA than the Radeon HD 5670, and will be able to handle higher resolutions without losing too much performance. (explain)

Radeon R9 M265X 9200 Mpixels/sec
Radeon HD 5670 6200 Mpixels/sec
Difference: 3000 (48%)

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 R9 M265X

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 R9 M265X
Manufacturer AMD AMD
Year January 14, 2010 May 1 2014
Code Name Redwood XT Venus Pro
Memory 1024 MB 2048 MB
Core Speed 775 MHz 575 MHz
Memory Speed 4000 MHz 4500 MHz
Power (Max TDP) 61 watts (Unknown) watts
Bandwidth 64000 MB/sec 72000 MB/sec
Texel Rate 15500 Mtexels/sec 23000 Mtexels/sec
Pixel Rate 6200 Mpixels/sec 9200 Mpixels/sec
Unified Shaders 400(80x5) 640
Texture Mapping Units 20 40
Render Output Units 8 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 627 million (Unknown) 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: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the bus width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster 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 processed per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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Radeon HD 5670

Amazon.com

Check prices at:

Radeon R9 M265X

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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