GeForce GTX 260 Core 216 vs Radeon R9 M395X

Intro

Compare that to the Radeon R9 M395X, which features clock speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs as well as 128 TAUs 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

In theory, the Radeon R9 M395X should be 43% quicker than the GeForce GTX 260 Core 216 in general, because of its greater bandwidth. (explain)

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

Texel Rate

The Radeon R9 M395X is a lot (more or less 123%) more effective at texture filtering 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 will be much (more or less 43%) faster with regards to full screen anti-aliasing than the GeForce GTX 260 Core 216, and will be capable of handling higher screen resolutions better. (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 maximum amount of data (measured in megabytes per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 are processed in one second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the graphics 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 maximum amount of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends 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.