Radeon R7 260X vs Radeon R9 M380

Intro

Compare that to the Radeon R9 M380, which uses a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 memory works at a frequency of 1500 MHz on this particular model. It features 640 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R7 260X is 8% quicker than the Radeon R9 M380 overall, because of its greater bandwidth. (explain)

Radeon R7 260X		104000 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 8000 (8%)

Texel Rate

The Radeon R7 260X should be much (more or less 54%) better at AF than the Radeon R9 M380. (explain)

Radeon R7 260X		61600 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 21600 (54%)

Pixel Rate

The Radeon R7 260X will be a little bit (about 10%) more effective at anti-aliasing than the Radeon R9 M380, and should be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R7 260X		17600 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 1600 (10%)

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 largest amount of information (in units of MB per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, 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 can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.