Radeon HD 5670 vs Radeon HD 7970

Intro

Compare those specs to the Radeon HD 7970, which features a clock speed of 925 MHz and a GDDR5 memory frequency of 1375 MHz. It also features a 384-bit bus, and uses a 28 nm design. It features 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
Radeon HD 7970		250 Watts
	Difference: 189 Watts (310%)

Memory Bandwidth

Theoretically, the Radeon HD 7970 should be much faster than the Radeon HD 5670 in general. (explain)

Radeon HD 7970		264000 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 200000 (313%)

Texel Rate

The Radeon HD 7970 should be much (more or less 664%) better at anisotropic filtering than the Radeon HD 5670. (explain)

Radeon HD 7970		118400 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 102900 (664%)

Pixel Rate

The Radeon HD 7970 should be much (about 377%) faster with regards to FSAA than the Radeon HD 5670, and also capable of handling higher resolutions while still performing well. (explain)

Radeon HD 7970		29600 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 23400 (377%)

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 maximum amount of information (counted in MB per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type memory, it 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 AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of 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 per second.

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