Radeon HD 6750 1GB vs Radeon R9 270X

Intro

Compare those specifications to the Radeon R9 270X, which uses a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 memory runs at a speed of 1400 MHz on this specific model. It features 1280 SPUs along with 80 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 1GB		86 Watts
Radeon R9 270X		180 Watts
	Difference: 94 Watts (109%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 270X will be 180% quicker than the Radeon HD 6750 1GB in general, because of its higher data rate. (explain)

Radeon R9 270X		179200 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 115200 (180%)

Texel Rate

The Radeon R9 270X should be much (more or less 207%) better at AF than the Radeon HD 6750 1GB. (explain)

Radeon R9 270X		80000 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 53900 (207%)

Pixel Rate

The Radeon R9 270X is a lot (about 176%) faster with regards to AA than the Radeon HD 6750 1GB, and also capable of handling higher screen resolutions better. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon HD 6750 1GB		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 largest amount of data (counted in megabytes per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better 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 texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at 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 chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.