GeForce GTX 260 Core 216 vs Radeon R9 M395X

Intro

Compare those specifications to the Radeon R9 M395X, which comes with a clock speed of 723 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 256-bit memory bus, and uses a 28 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
GeForce GTX 260 Core 216		202 Watts
	Difference: 77 Watts (62%)

Memory Bandwidth

Theoretically, the Radeon R9 M395X should perform much faster than the GeForce GTX 260 Core 216 in general. (explain)

Radeon R9 M395X		160000 MB/sec
GeForce GTX 260 Core 216		111888 MB/sec
	Difference: 48112 (43%)

Texel Rate

The Radeon R9 M395X should be much (more or less 123%) more effective at AF than the GeForce GTX 260 Core 216. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce GTX 260 Core 216		41472 Mtexels/sec
	Difference: 51072 (123%)

Pixel Rate

The Radeon R9 M395X should be a lot (more or less 43%) more effective at full screen anti-aliasing than the GeForce GTX 260 Core 216, and should be capable of handling higher resolutions without slowing down too much. (explain)

Radeon R9 M395X		23136 Mpixels/sec
GeForce GTX 260 Core 216		16128 Mpixels/sec
	Difference: 7008 (43%)

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 data (counted in megabytes per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at 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 the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.