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Radeon HD 6750 1GB vs Radeon R7 250X 2GB

Intro

The Radeon HD 6750 1GB features a GPU core clock speed of 725 MHz, and the 1024 MB of GDDR5 memory is set to run at 1000 MHz through a 128-bit bus. It also features 720 SPUs, 36 TAUs, and 16 Raster Operation Units.

Compare that to the Radeon R7 250X 2GB, which comes with a clock speed of 1000 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 1GB 86 Watts
Radeon R7 250X 2GB 95 Watts
Difference: 9 Watts (10%)

Memory Bandwidth

Theoretically speaking, the Radeon R7 250X 2GB should be 13% quicker than the Radeon HD 6750 1GB in general, due to its higher data rate. (explain)

Radeon R7 250X 2GB 72000 MB/sec
Radeon HD 6750 1GB 64000 MB/sec
Difference: 8000 (13%)

Texel Rate

The Radeon R7 250X 2GB is quite a bit (approximately 53%) better at texture filtering than the Radeon HD 6750 1GB. (explain)

Radeon R7 250X 2GB 40000 Mtexels/sec
Radeon HD 6750 1GB 26100 Mtexels/sec
Difference: 13900 (53%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R7 250X 2GB is the winner, by far. (explain)

Radeon R7 250X 2GB 16000 Mpixels/sec
Radeon HD 6750 1GB 11600 Mpixels/sec
Difference: 4400 (38%)

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

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Radeon R7 250X 2GB

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 R7 250X 2GB
Manufacturer AMD AMD
Year January 2011 February 2014
Code Name Juniper Pro Cape Verde XT
Memory 1024 MB 2048 MB
Core Speed 725 MHz 1000 MHz
Memory Speed 4000 MHz 4500 MHz
Power (Max TDP) 86 watts 95 watts
Bandwidth 64000 MB/sec 72000 MB/sec
Texel Rate 26100 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 11600 Mpixels/sec 16000 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 1500 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: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better 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 texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its 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 the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 6750 1GB

Amazon.com

Check prices at:

Radeon R7 250X 2GB

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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