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Radeon HD 5670 vs Radeon R9 M265X

Intro

The Radeon HD 5670 features a clock speed of 775 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It is made up of 400(80x5) SPUs, 20 Texture Address Units, and 8 ROPs.

Compare those specs to the Radeon R9 M265X, which uses a 28 nm design. AMD has set the core speed at 575 MHz. The GDDR5 memory works at a speed of 1125 MHz on this particular model. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M265X, in theory, should be just a bit faster than the Radeon HD 5670 overall. (explain)

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

Texel Rate

The Radeon R9 M265X will be a lot (about 48%) more effective at AF than the Radeon HD 5670. (explain)

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

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 M265X is a better choice, and very much so. (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: Bandwidth is the maximum amount of information (counted in MB per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the interface width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. 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 processed per second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the 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 card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs 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 many other factors, most notably the memory bandwidth of the card - the lower the 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 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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