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Radeon HD 6750 vs Radeon R7 250X

Intro

The Radeon HD 6750 uses a 40 nm design. AMD has clocked the core speed at 725 MHz. The GDDR5 memory runs at a frequency of 1000 MHz on this specific model. It features 720 SPUs along with 36 Texture Address Units and 16 ROPs.

Compare all that to the Radeon R7 250X, which makes use of a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 RAM is set to run at a frequency of 1125 MHz on this specific model. It features 640 SPUs along with 40 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

The Radeon R7 250X, in theory, should perform a bit faster than the Radeon HD 6750 in general. (explain)

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

Texel Rate

The Radeon R7 250X is quite a bit (more or less 53%) faster with regards to AF than the Radeon HD 6750. (explain)

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

Pixel Rate

The Radeon R7 250X should be quite a bit (approximately 38%) faster with regards to AA than the Radeon HD 6750, and capable of handling higher screen resolutions better. (explain)

Radeon R7 250X 16000 Mpixels/sec
Radeon HD 6750 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

Amazon.com

Check prices at:

Radeon R7 250X

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 250X
Manufacturer AMD AMD
Year January 2011 February 2014
Code Name Juniper Pro Cape Verde XT
Memory 512 MB 1024 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 4.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 6750

Amazon.com

Check prices at:

Radeon R7 250X

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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