Radeon HD 5750 512MB vs Radeon R9 270X

Intro

Compare all that to the Radeon R9 270X, which comes with a core clock speed of 1000 MHz and a GDDR5 memory speed of 1400 MHz. It also features 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

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 512MB		86 Watts
Radeon R9 270X		180 Watts
	Difference: 94 Watts (109%)

Memory Bandwidth

In theory, the Radeon R9 270X should be 143% faster than the Radeon HD 5750 512MB overall, due to its higher bandwidth. (explain)

Radeon R9 270X		179200 MB/sec
Radeon HD 5750 512MB		73600 MB/sec
	Difference: 105600 (143%)

Texel Rate

The Radeon R9 270X should be much (more or less 217%) more effective at AF than the Radeon HD 5750 512MB. (explain)

Radeon R9 270X		80000 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 54800 (217%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 270X is a better choice, and very much so. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon HD 5750 512MB		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: Bandwidth is the max amount of data (in units of megabytes per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.