Radeon HD 5570 vs Radeon HD 7970

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
Radeon HD 7970		250 Watts
	Difference: 207 Watts (481%)

Memory Bandwidth

Performance-wise, the Radeon HD 7970 should in theory be quite a bit better than the Radeon HD 5570 overall. (explain)

Radeon HD 7970		264000 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 235200 (817%)

Texel Rate

The Radeon HD 7970 should be a lot (about 811%) faster with regards to texture filtering than the Radeon HD 5570. (explain)

Radeon HD 7970		118400 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 105400 (811%)

Pixel Rate

The Radeon HD 7970 is a lot (approximately 469%) better at full screen anti-aliasing than the Radeon HD 5570, and capable of handling higher screen resolutions more effectively. (explain)

Radeon HD 7970		29600 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 24400 (469%)

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 maximum amount of data (measured in MB per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

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