Radeon R7 M260X vs Radeon R9 380 4G

Intro

Compare all of that to the Radeon R9 380 4G, which comes with GPU clock speed of 970 MHz, and 4096 MB of GDDR5 RAM running at 1425 MHz through a 256-bit bus. It also is comprised of 1792 SPUs, 112 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon R9 380 4G should theoretically be quite a bit superior to the Radeon R7 M260X in general. (explain)

Radeon R9 380 4G		182400 MB/sec
Radeon R7 M260X		64000 MB/sec
	Difference: 118400 (185%)

Texel Rate

The Radeon R9 380 4G will be a lot (approximately 449%) better at AF than the Radeon R7 M260X. (explain)

Radeon R9 380 4G		108640 Mtexels/sec
Radeon R7 M260X		19800 Mtexels/sec
	Difference: 88840 (449%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 380 4G is the winner, and very much so. (explain)

Radeon R9 380 4G		31040 Mpixels/sec
Radeon R7 M260X		6600 Mpixels/sec
	Difference: 24440 (370%)

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 information (counted in MB per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated 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 drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.