GeForce GTS 150 vs Radeon R9 M395X

Intro

Compare those specs to the Radeon R9 M395X, which features a clock speed of 723 MHz and a GDDR5 memory frequency 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 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 GTS 150		141 Watts
	Difference: 16 Watts (13%)

Memory Bandwidth

The Radeon R9 M395X should theoretically be much faster than the GeForce GTS 150 in general. (explain)

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

Texel Rate

The Radeon R9 M395X should be much (more or less 95%) better at texture 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 quite a bit (approximately 95%) better at full screen anti-aliasing than the GeForce GTS 150, and also should be able to handle higher screen resolutions better. (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 largest amount of information (measured in MB per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the clock 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 output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.