Radeon HD 5770 vs Radeon R9 M375X

Intro

Compare those specifications to the Radeon R9 M375X, which comes with GPU 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 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 5770 will be 7% faster than the Radeon R9 M375X in general, because of its greater data rate. (explain)

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

Texel Rate

The Radeon R9 M375X is a little bit (approximately 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

If using lots of anti-aliasing is important to you, then the Radeon R9 M375X is superior to the Radeon HD 5770, not by a very large margin though. (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: Memory bandwidth is the maximum amount of data (counted in megabytes per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better 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 number of pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.