Radeon HD 5770 vs Radeon R9 M375X

Intro

Compare all that to the Radeon R9 M375X, which comes with a GPU core clock speed of 1015 MHz, and 4096 MB of GDDR5 memory set to run at 1125 MHz through a 128-bit bus. It also features 640 Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 5770 should in theory be a little bit faster than the Radeon R9 M375X in general. (explain)

Radeon HD 5770		76800 MB/sec
Radeon R9 M375X		72000 MB/sec
	Difference: 4800 (7%)

Texel Rate

The Radeon R9 M375X is just a bit (more or less 19%) more effective at anisotropic filtering than the Radeon HD 5770. (explain)

Radeon R9 M375X		40600 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 6600 (19%)

Pixel Rate

The Radeon R9 M375X is a small bit (more or less 19%) better at AA than the Radeon HD 5770, and should be able to handle higher resolutions better. (explain)

Radeon R9 M375X		16240 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 2640 (19%)

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 information (counted in MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR type memory, it should 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 anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.