Radeon R7 M360 vs Radeon R9 M390X

Intro

Compare those specifications to the Radeon R9 M390X, which uses a 28 nm design. AMD has clocked the core frequency at 723 MHz. The GDDR5 memory runs at a speed of 1250 MHz on this card. It features 2048 SPUs along with 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M390X should be 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 is much (about 243%) better at AF than the Radeon R7 M360. (explain)

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

Pixel Rate

The Radeon R9 M390X is a lot (more or less 157%) faster with regards to anti-aliasing than the Radeon R7 M360, and also should be capable of handling higher resolutions without losing too much performance. (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

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 texture map elements (texels) that are processed in one second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the video 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 maximum number of pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the clock 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 also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.