Radeon HD 5830 vs Radeon R9 M280X

Intro

Compare those specifications to the Radeon R9 M280X, which features a core clock frequency of 900 MHz and a GDDR5 memory frequency of 1375 MHz. It also uses a 128-bit bus, and makes use of a 28 nm design. It features 896 SPUs, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M280X		75 Watts
Radeon HD 5830		175 Watts
	Difference: 100 Watts (133%)

Memory Bandwidth

The Radeon HD 5830, in theory, should perform quite a bit faster than the Radeon R9 M280X overall. (explain)

Radeon HD 5830		128000 MB/sec
Radeon R9 M280X		88000 MB/sec
	Difference: 40000 (45%)

Texel Rate

The Radeon R9 M280X will be a small bit (about 13%) better at anisotropic filtering than the Radeon HD 5830. (explain)

Radeon R9 M280X		50400 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 5600 (13%)

Pixel Rate

The Radeon R9 M280X should be a bit (about 13%) more effective at anti-aliasing than the Radeon HD 5830, and also able to handle higher resolutions without losing too much performance. (explain)

Radeon R9 M280X		14400 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 1600 (13%)

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 largest amount of data (measured in megabytes per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.