Radeon R7 370 4G vs Radeon R9 M390X

Intro

Compare all that to the Radeon R9 M390X, which comes with core speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs along with 128 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 370 4G		110 Watts
Radeon R9 M390X		125 Watts
	Difference: 15 Watts (14%)

Memory Bandwidth

Theoretically speaking, the Radeon R7 370 4G should perform just a bit faster than the Radeon R9 M390X overall. (explain)

Radeon R7 370 4G		179200 MB/sec
Radeon R9 M390X		160000 MB/sec
	Difference: 19200 (12%)

Texel Rate

The Radeon R9 M390X should be much (about 48%) better at anisotropic filtering than the Radeon R7 370 4G. (explain)

Radeon R9 M390X		92544 Mtexels/sec
Radeon R7 370 4G		62400 Mtexels/sec
	Difference: 30144 (48%)

Pixel Rate

The Radeon R7 370 4G should be a lot (approximately 35%) more effective at FSAA than the Radeon R9 M390X, and also will be capable of handling higher screen resolutions while still performing well. (explain)

Radeon R7 370 4G		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 max amount of information (counted in megabytes per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.