Radeon HD 7850 vs Radeon R9 M395X

Intro

Compare those specs to the Radeon R9 M395X, which comes with core clock speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
Radeon HD 7850		130 Watts
	Difference: 5 Watts (4%)

Memory Bandwidth

As far as performance goes, the Radeon R9 M395X should in theory be a bit superior to the Radeon HD 7850 in general. (explain)

Radeon R9 M395X		160000 MB/sec
Radeon HD 7850		153600 MB/sec
	Difference: 6400 (4%)

Texel Rate

The Radeon R9 M395X will be a lot (about 68%) more effective at anisotropic filtering than the Radeon HD 7850. (explain)

Radeon R9 M395X		92544 Mtexels/sec
Radeon HD 7850		55040 Mtexels/sec
	Difference: 37504 (68%)

Pixel Rate

The Radeon HD 7850 should be a little bit (more or less 19%) more effective at FSAA than the Radeon R9 M395X, and should be capable of handling higher resolutions better. (explain)

Radeon HD 7850		27520 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 4384 (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 largest amount of information (measured in MB per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once 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, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out 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 drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.