Radeon HD 5770 vs Radeon R9 M280X

Intro

Compare those specs to the Radeon R9 M280X, which comes with a GPU core clock speed of 900 MHz, and 4096 MB of GDDR5 RAM running at 1375 MHz through a 128-bit bus. It also is made up of 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 5770		108 Watts
	Difference: 33 Watts (44%)

Memory Bandwidth

Performance-wise, the Radeon R9 M280X should in theory be a little bit superior to the Radeon HD 5770 in general. (explain)

Radeon R9 M280X		88000 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 11200 (15%)

Texel Rate

The Radeon R9 M280X should be a lot (approximately 48%) faster with regards to AF than the Radeon HD 5770. (explain)

Radeon R9 M280X		50400 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 16400 (48%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 M280X is superior to the Radeon HD 5770, not by a very large margin though. (explain)

Radeon R9 M280X		14400 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 800 (6%)

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 (measured in megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better 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 number of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the 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 most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.