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Radeon R7 M360 vs Radeon R9 M390X

Intro

The Radeon R7 M360 uses a 28 nm design. AMD has clocked the core speed at 1125 MHz. The DDR3 RAM is set to run at a speed of 1000 MHz on this particular card. It features 384 SPUs along with 24 Texture Address Units and 8 Rasterization Operator Units.

Compare that to the Radeon R9 M390X, which makes use of a 28 nm design. AMD has clocked the core speed at 723 MHz. The GDDR5 RAM works at a speed of 1250 MHz on this specific model. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M390X should theoretically perform a lot faster than the Radeon R7 M360 overall. (explain)

Radeon R9 M390X		160000 MB/sec
Radeon R7 M360		16000 MB/sec
	Difference: 144000 (900%)

Texel Rate

The Radeon R9 M390X will be a lot (approximately 243%) better at texture filtering than the Radeon R7 M360. (explain)

Radeon R9 M390X		92544 Mtexels/sec
Radeon R7 M360		27000 Mtexels/sec
	Difference: 65544 (243%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 M390X is superior to the Radeon R7 M360, by a large margin. (explain)

Radeon R9 M390X		23136 Mpixels/sec
Radeon R7 M360		9000 Mpixels/sec
	Difference: 14136 (157%)

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

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Radeon R7 M360

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Radeon R9 M390X

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Specifications

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Model	Radeon R7 M360	Radeon R9 M390X
Manufacturer	AMD	AMD
Year	2015	2015
Code Name	Oland	Tonga
Memory	2048 MB	4096 MB
Core Speed	1125 MHz	723 MHz
Memory Speed	2000 MHz	5000 MHz
Power (Max TDP)	(Unknown) watts	125 watts
Bandwidth	16000 MB/sec	160000 MB/sec
Texel Rate	27000 Mtexels/sec	92544 Mtexels/sec
Pixel Rate	9000 Mpixels/sec	23136 Mpixels/sec
Unified Shaders	384	2048
Texture Mapping Units	24	128
Render Output Units	8	32
Bus Type	DDR3	GDDR5
Bus Width	64-bit	256-bit
Fab Process	28 nm	28 nm
Transistors	(Unknown) million	(Unknown) million
Bus	PCIe 3.0 x16	PCIe 3.0 x16
DirectX Version	DirectX 12	DirectX 12
OpenGL Version	OpenGL 4.3	OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of data (in units of megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a 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 figure is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

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