Radeon HD 6750 vs Radeon R9 270X

Intro

Compare that to the Radeon R9 270X, which comes with a core clock frequency of 1000 MHz and a GDDR5 memory speed of 1400 MHz. It also uses a 256-bit memory bus, and uses a 28 nm design. It features 1280 SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750		86 Watts
Radeon R9 270X		180 Watts
	Difference: 94 Watts (109%)

Memory Bandwidth

Performance-wise, the Radeon R9 270X should theoretically be much superior to the Radeon HD 6750 in general. (explain)

Radeon R9 270X		179200 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 115200 (180%)

Texel Rate

The Radeon R9 270X will be quite a bit (more or less 207%) more effective at AF than the Radeon HD 6750. (explain)

Radeon R9 270X		80000 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 53900 (207%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 270X is the winner, by far. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 20400 (176%)

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

Specifications

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip 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 ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.