GeForce GTS 150 vs Radeon R9 M395X

Intro

Compare those specifications to the Radeon R9 M395X, which makes use of a 28 nm design. AMD has set the core frequency at 723 MHz. The GDDR5 memory is set to run at a frequency of 1250 MHz on this model. It features 2048 SPUs as well as 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 GTS 150		141 Watts
	Difference: 16 Watts (13%)

Memory Bandwidth

In theory, the Radeon R9 M395X is 400% quicker than the GeForce GTS 150 in general, due to its higher data rate. (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 (approximately 95%) faster with regards to 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

If running with a high screen resolution is important to you, then the Radeon R9 M395X is the winner, by far. (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: Bandwidth is the max amount of information (counted in MB per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units by the core 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs 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 fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.