Radeon R9 380 4G vs Radeon R9 M370X

Intro

Compare those specs to the Radeon R9 M370X, which uses a 28 nm design. AMD has clocked the core frequency at 800 MHz. The GDDR5 RAM works at a frequency of 1125 MHz on this specific card. It features 640 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon R9 380 4G should in theory be quite a bit better than the Radeon R9 M370X overall. (explain)

Radeon R9 380 4G		182400 MB/sec
Radeon R9 M370X		72000 MB/sec
	Difference: 110400 (153%)

Texel Rate

The Radeon R9 380 4G should be much (about 240%) more effective at anisotropic filtering than the Radeon R9 M370X. (explain)

Radeon R9 380 4G		108640 Mtexels/sec
Radeon R9 M370X		32000 Mtexels/sec
	Difference: 76640 (240%)

Pixel Rate

The Radeon R9 380 4G is much (about 143%) more effective at FSAA than the Radeon R9 M370X, and will be able to handle higher resolutions more effectively. (explain)

Radeon R9 380 4G		31040 Mpixels/sec
Radeon R9 M370X		12800 Mpixels/sec
	Difference: 18240 (143%)

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: Bandwidth is the maximum amount of data (in units of MB per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If 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 can be processed per second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied 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 calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.