Radeon R7 M260X vs Radeon R9 380 2G

Intro

Compare those specs to the Radeon R9 380 2G, which features GPU clock speed of 970 MHz, and 2048 MB of GDDR5 RAM running at 1425 MHz through a 256-bit bus. It also is made up of 1792 SPUs, 112 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 380 2G will be 185% faster than the Radeon R7 M260X in general, because of its greater bandwidth. (explain)

Radeon R9 380 2G		182400 MB/sec
Radeon R7 M260X		64000 MB/sec
	Difference: 118400 (185%)

Texel Rate

The Radeon R9 380 2G will be quite a bit (approximately 449%) more effective at texture filtering than the Radeon R7 M260X. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
Radeon R7 M260X		19800 Mtexels/sec
	Difference: 88840 (449%)

Pixel Rate

The Radeon R9 380 2G is a lot (about 370%) more effective at full screen anti-aliasing than the Radeon R7 M260X, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon R9 380 2G		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 max amount of information (measured in megabytes per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are 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 this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.