Radeon HD 5750 1GB vs Radeon HD 7970

Intro

Compare all of that to the Radeon HD 7970, which features core clock speeds of 925 MHz on the GPU, and 1375 MHz on the 3072 MB of GDDR5 RAM. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
Radeon HD 7970		250 Watts
	Difference: 164 Watts (191%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7970 should be 259% faster than the Radeon HD 5750 1GB overall, due to its greater bandwidth. (explain)

Radeon HD 7970		264000 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 190400 (259%)

Texel Rate

The Radeon HD 7970 will be much (more or less 370%) faster with regards to anisotropic filtering than the Radeon HD 5750 1GB. (explain)

Radeon HD 7970		118400 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 93200 (370%)

Pixel Rate

The Radeon HD 7970 is much (more or less 164%) faster with regards to anti-aliasing than the Radeon HD 5750 1GB, and also able to handle higher resolutions without losing too much performance. (explain)

Radeon HD 7970		29600 Mpixels/sec
Radeon HD 5750 1GB		11200 Mpixels/sec
	Difference: 18400 (164%)

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 information (in units of megabytes per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock 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 output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.