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Radeon HD 6750 vs Radeon HD 7750


The Radeon HD 6750 uses a 40 nm design. AMD has set the core speed at 725 MHz. The GDDR5 RAM works at a frequency of 1000 MHz on this specific card. It features 720 SPUs along with 36 Texture Address Units and 16 Rasterization Operator Units.

Compare those specifications to the Radeon HD 7750, which uses a 28 nm design. AMD has set the core speed at 800 MHz. The GDDR5 RAM is set to run at a frequency of 1125 MHz on this model. It features 512 SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750 55 Watts
Radeon HD 6750 86 Watts
Difference: 31 Watts (56%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7750 should perform a little bit faster than the Radeon HD 6750 in general. (explain)

Radeon HD 7750 72000 MB/sec
Radeon HD 6750 64000 MB/sec
Difference: 8000 (13%)

Texel Rate

The Radeon HD 6750 should be just a bit (approximately 2%) faster with regards to AF than the Radeon HD 7750. (explain)

Radeon HD 6750 26100 Mtexels/sec
Radeon HD 7750 25600 Mtexels/sec
Difference: 500 (2%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 7750 is a better choice, though only just barely. (explain)

Radeon HD 7750 12800 Mpixels/sec
Radeon HD 6750 11600 Mpixels/sec
Difference: 1200 (10%)

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

Radeon HD 7750

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.


Display Specifications

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Model Radeon HD 6750 Radeon HD 7750
Manufacturer AMD AMD
Year January 2011 February 2012
Code Name Juniper Pro Cape Verde Pro
Memory 512 MB 1024 MB
Core Speed 725 MHz 800 MHz
Memory Speed 4000 MHz 4500 MHz
Power (Max TDP) 86 watts 55 watts
Bandwidth 64000 MB/sec 72000 MB/sec
Texel Rate 26100 Mtexels/sec 25600 Mtexels/sec
Pixel Rate 11600 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 720 512
Texture Mapping Units 36 32
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 11.1
OpenGL Version OpenGL 4.0 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

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


One Response to “Radeon HD 6750 vs Radeon HD 7750”
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