Radeon R7 260X vs Radeon R9 M395X

Intro

Compare those specifications to the Radeon R9 M395X, which has GPU core speed of 723 MHz, and 4096 MB of GDDR5 memory running at 1250 MHz through a 256-bit bus. It also is comprised of 2048 Stream Processors, 128 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 260X		115 Watts
Radeon R9 M395X		125 Watts
	Difference: 10 Watts (9%)

Memory Bandwidth

Performance-wise, the Radeon R9 M395X should in theory be much superior to the Radeon R7 260X in general. (explain)

Radeon R9 M395X		160000 MB/sec
Radeon R7 260X		104000 MB/sec
	Difference: 56000 (54%)

Texel Rate

The Radeon R9 M395X should be quite a bit (approximately 50%) better at AF than the Radeon R7 260X. (explain)

Radeon R9 M395X		92544 Mtexels/sec
Radeon R7 260X		61600 Mtexels/sec
	Difference: 30944 (50%)

Pixel Rate

The Radeon R9 M395X will be much (more or less 31%) more effective at AA than the Radeon R7 260X, and also should be able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 M395X		23136 Mpixels/sec
Radeon R7 260X		17600 Mpixels/sec
	Difference: 5536 (31%)

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 transferred past the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR 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 texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.