Radeon HD 5670 vs Radeon R9 M280X

Intro

Compare all of that to the Radeon R9 M280X, which has a core clock speed of 900 MHz and a GDDR5 memory speed of 1375 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It features 896 SPUs, 56 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
Radeon R9 M280X		75 Watts
	Difference: 14 Watts (23%)

Memory Bandwidth

In theory, the Radeon R9 M280X is 38% faster than the Radeon HD 5670 in general, due to its higher data rate. (explain)

Radeon R9 M280X		88000 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 24000 (38%)

Texel Rate

The Radeon R9 M280X should be quite a bit (about 225%) better at anisotropic filtering than the Radeon HD 5670. (explain)

Radeon R9 M280X		50400 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 34900 (225%)

Pixel Rate

The Radeon R9 M280X will be much (more or less 132%) better at anti-aliasing than the Radeon HD 5670, and also capable of handling higher resolutions while still performing well. (explain)

Radeon R9 M280X		14400 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 8200 (132%)

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 transported across the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, 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 figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.