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Radeon HD 6750 vs Radeon R7 250

Intro

The Radeon HD 6750 has a GPU core speed of 725 MHz, and the 512 MB of GDDR5 memory is set to run at 1000 MHz through a 128-bit bus. It also is made up of 720 SPUs, 36 Texture Address Units, and 16 Raster Operation Units.

Compare those specifications to the Radeon R7 250, which makes use of a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 RAM works at a speed of 1150 MHz on this card. It features 384 SPUs as well as 24 Texture Address Units and 8 Rasterization Operator 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

Theoretically, the Radeon R7 250 should be a small bit faster than 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 is a little bit (approximately 9%) faster with regards to AF than the Radeon R7 250. (explain)

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

Pixel Rate

The Radeon HD 6750 will be a lot (more or less 45%) better at AA than the Radeon R7 250, and able to handle higher screen resolutions more effectively. (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: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 figure is calculated by multiplying the total amount of texture units of the card 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 applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure 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 output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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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.

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