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Radeon HD 6750 1GB vs Radeon R9 M270X

Intro

The Radeon HD 6750 1GB features core speeds of 725 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 720 SPUs along with 36 Texture Address Units and 16 Rasterization Operator Units.

Compare those specifications to the Radeon R9 M270X, which features core speeds of 725 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 memory. It features 640 SPUs as well as 40 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M270X is 13% faster than the Radeon HD 6750 1GB in general, due to its higher bandwidth. (explain)

Radeon R9 M270X 72000 MB/sec
Radeon HD 6750 1GB 64000 MB/sec
Difference: 8000 (13%)

Texel Rate

The Radeon R9 M270X should be a little bit (more or less 11%) better at AF than the Radeon HD 6750 1GB. (explain)

Radeon R9 M270X 29000 Mtexels/sec
Radeon HD 6750 1GB 26100 Mtexels/sec
Difference: 2900 (11%)

Pixel Rate

Both cards have the exact same pixel rate, so in theory they should perform equally good at at AA, and be able to handle the same screen resolutions. (explain)

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 6750 1GB

Amazon.com

Check prices at:

Radeon R9 M270X

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 6750 1GB Radeon R9 M270X
Manufacturer AMD AMD
Year January 2011 May 1 2014
Code Name Juniper Pro Venus XT
Memory 1024 MB 2048 MB
Core Speed 725 MHz 725 MHz
Memory Speed 4000 MHz 4500 MHz
Power (Max TDP) 86 watts (Unknown) watts
Bandwidth 64000 MB/sec 72000 MB/sec
Texel Rate 26100 Mtexels/sec 29000 Mtexels/sec
Pixel Rate 11600 Mpixels/sec 11600 Mpixels/sec
Unified Shaders 720 640
Texture Mapping Units 36 40
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 1040 million (Unknown) million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 4.1 OpenGL 4.3

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 6750 1GB

Amazon.com

Check prices at:

Radeon R9 M270X

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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