GeForce GTX 460 1GB vs Radeon R9 M395X

Intro

Compare those specifications to the Radeon R9 M395X, which features GPU clock speed of 723 MHz, and 4096 MB of GDDR5 memory set to run at 1250 MHz through a 256-bit bus. It also is comprised of 2048 SPUs, 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 460 1GB		160 Watts
	Difference: 35 Watts (28%)

Memory Bandwidth

The Radeon R9 M395X should theoretically perform much faster than the GeForce GTX 460 1GB in general. (explain)

Radeon R9 M395X		160000 MB/sec
GeForce GTX 460 1GB		115200 MB/sec
	Difference: 44800 (39%)

Texel Rate

The Radeon R9 M395X should be much (approximately 145%) better at anisotropic filtering than the GeForce GTX 460 1GB. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce GTX 460 1GB		37800 Mtexels/sec
	Difference: 54744 (145%)

Pixel Rate

The Radeon R9 M395X will be just a bit (about 7%) faster with regards to anti-aliasing than the GeForce GTX 460 1GB, and also will be capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 M395X		23136 Mpixels/sec
GeForce GTX 460 1GB		21600 Mpixels/sec
	Difference: 1536 (7%)

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 (in units of megabytes per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 amount of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total amount of texture units by the core 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.