Radeon HD 5750 512MB vs Radeon R9 280X

Intro

Compare those specs to the Radeon R9 280X, which comes with a clock speed of 850 MHz and a GDDR5 memory frequency of 1500 MHz. It also features a 384-bit bus, and makes use of a 28 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 512MB		86 Watts
Radeon R9 280X		250 Watts
	Difference: 164 Watts (191%)

Memory Bandwidth

In theory, the Radeon R9 280X will be 291% faster than the Radeon HD 5750 512MB overall, because of its greater data rate. (explain)

Radeon R9 280X		288000 MB/sec
Radeon HD 5750 512MB		73600 MB/sec
	Difference: 214400 (291%)

Texel Rate

The Radeon R9 280X is much (more or less 332%) more effective at AF than the Radeon HD 5750 512MB. (explain)

Radeon R9 280X		108800 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 83600 (332%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 280X is a better choice, by a large margin. (explain)

Radeon R9 280X		27200 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 16000 (143%)

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 information (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 card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 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 anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.