Radeon HD 5970 vs Radeon R9 M395X

Intro

Compare those specifications to the Radeon R9 M395X, which features GPU core speed of 723 MHz, and 4096 MB of GDDR5 memory running at 1250 MHz through a 256-bit bus. It also is comprised of 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

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

Theoretically speaking, the Radeon HD 5970 will be 60% faster than the Radeon R9 M395X overall, because of its greater bandwidth. (explain)

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

Texel Rate

The Radeon HD 5970 is quite a bit (about 151%) more effective at 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 high levels of AA is important to you, then the Radeon HD 5970 is superior to the Radeon R9 M395X, by far. (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 data (counted in MB per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs 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 output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.