Radeon R7 370 2G vs Radeon R9 M390X

Intro

Compare all of that to the Radeon R9 M390X, which features a GPU core clock 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 Stream Processors, 128 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 370 2G		110 Watts
Radeon R9 M390X		125 Watts
	Difference: 15 Watts (14%)

Memory Bandwidth

The Radeon R7 370 2G should in theory perform just a bit faster than the Radeon R9 M390X overall. (explain)

Radeon R7 370 2G		179200 MB/sec
Radeon R9 M390X		160000 MB/sec
	Difference: 19200 (12%)

Texel Rate

The Radeon R9 M390X is much (more or less 48%) more effective at anisotropic filtering than the Radeon R7 370 2G. (explain)

Radeon R9 M390X		92544 Mtexels/sec
Radeon R7 370 2G		62400 Mtexels/sec
	Difference: 30144 (48%)

Pixel Rate

The Radeon R7 370 2G is quite a bit (about 35%) more effective at full screen anti-aliasing than the Radeon R9 M390X, and capable of handling higher screen resolutions better. (explain)

Radeon R7 370 2G		31200 Mpixels/sec
Radeon R9 M390X		23136 Mpixels/sec
	Difference: 8064 (35%)

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 information (counted in megabytes per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total number of texture units 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. 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 also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.