Radeon HD 5970 vs Radeon R9 M395X

Intro

Compare those specifications to the Radeon R9 M395X, which comes with GPU core speed of 723 MHz, and 4096 MB of GDDR5 memory set to run at 1250 MHz through a 256-bit bus. It also features 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
Radeon HD 5970		294 Watts
	Difference: 169 Watts (135%)

Memory Bandwidth

Performance-wise, the Radeon HD 5970 should theoretically be much better than the Radeon R9 M395X overall. (explain)

Radeon HD 5970		256000 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 96000 (60%)

Texel Rate

The Radeon HD 5970 will be a lot (approximately 151%) faster with regards to AF than the Radeon R9 M395X. (explain)

Radeon HD 5970		232000 Mtexels/sec
Radeon R9 M395X		92544 Mtexels/sec
	Difference: 139456 (151%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 5970 is superior to the Radeon R9 M395X, by a large margin. (explain)

Radeon HD 5970		92800 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 69664 (301%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of information (measured in MB per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 can be applied in one second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics 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 could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core speed of the card. 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 also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.