GeForce GTS 150 vs Radeon R9 M395X

Intro

Compare that to the Radeon R9 M395X, which comes with GPU core 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 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
GeForce GTS 150		141 Watts
	Difference: 16 Watts (13%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 M395X is 400% quicker than the GeForce GTS 150 in general, because of its higher bandwidth. (explain)

Radeon R9 M395X		160000 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 128000 (400%)

Texel Rate

The Radeon R9 M395X should be a lot (more or less 95%) faster with regards to anisotropic filtering than the GeForce GTS 150. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce GTS 150		47360 Mtexels/sec
	Difference: 45184 (95%)

Pixel Rate

The Radeon R9 M395X should be a lot (more or less 95%) faster with regards to FSAA than the GeForce GTS 150, and also able to handle higher resolutions without losing too much performance. (explain)

Radeon R9 M395X		23136 Mpixels/sec
GeForce GTS 150		11840 Mpixels/sec
	Difference: 11296 (95%)

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 (in units of megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better 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 are applied in one second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, 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 amount of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.