Radeon HD 5750 1GB vs Radeon R9 270X

Intro

Compare those specifications to the Radeon R9 270X, which has a 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 is comprised of 1280 SPUs, 80 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
Radeon R9 270X		180 Watts
	Difference: 94 Watts (109%)

Memory Bandwidth

Theoretically, the Radeon R9 270X should be much faster than the Radeon HD 5750 1GB overall. (explain)

Radeon R9 270X		179200 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 105600 (143%)

Texel Rate

The Radeon R9 270X will be much (more or less 217%) more effective at anisotropic filtering than the Radeon HD 5750 1GB. (explain)

Radeon R9 270X		80000 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 54800 (217%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 270X is superior to the Radeon HD 5750 1GB, by far. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon HD 5750 1GB		11200 Mpixels/sec
	Difference: 20800 (186%)

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: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.