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Radeon HD 6750 vs Radeon R7 250

Intro

The Radeon HD 6750 has a clock frequency of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It features 720 SPUs, 36 TAUs, and 16 ROPs.

Compare all of that to the Radeon R7 250, which has GPU core speed of 1000 MHz, and 1024 MB of GDDR5 memory running at 1150 MHz through a 128-bit bus. It also is comprised of 384 Stream Processors, 24 Texture Address Units, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250 65 Watts
Radeon HD 6750 86 Watts
Difference: 21 Watts (32%)

Memory Bandwidth

Performance-wise, the Radeon R7 250 should theoretically be a bit superior to the Radeon HD 6750 in general. (explain)

Radeon R7 250 73600 MB/sec
Radeon HD 6750 64000 MB/sec
Difference: 9600 (15%)

Texel Rate

The Radeon HD 6750 should be just a bit (more or less 9%) faster with regards to anisotropic filtering than the Radeon R7 250. (explain)

Radeon HD 6750 26100 Mtexels/sec
Radeon R7 250 24000 Mtexels/sec
Difference: 2100 (9%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 6750 is a better choice, by a large margin. (explain)

Radeon HD 6750 11600 Mpixels/sec
Radeon R7 250 8000 Mpixels/sec
Difference: 3600 (45%)

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

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 6750 Radeon R7 250
Manufacturer AMD AMD
Year January 2011 October 2013
Code Name Juniper Pro Oland XT
Memory 512 MB 1024 MB
Core Speed 725 MHz 1000 MHz
Memory Speed 4000 MHz 4600 MHz
Power (Max TDP) 86 watts 65 watts
Bandwidth 64000 MB/sec 73600 MB/sec
Texel Rate 26100 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 11600 Mpixels/sec 8000 Mpixels/sec
Unified Shaders 720 384
Texture Mapping Units 36 24
Render Output Units 16 8
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 1040 million 1040 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 4.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of data (measured in MB per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's 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 applied per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the 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 could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 6750

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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