GeForce GTS 150 vs Radeon R9 M375

Intro

Compare that to the Radeon R9 M375, which has a clock speed of 1015 MHz and a DDR3 memory frequency of 1100 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M375 should perform just a bit faster than the GeForce GTS 150 overall. (explain)

Radeon R9 M375		35200 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 3200 (10%)

Texel Rate

The GeForce GTS 150 is a little bit (more or less 17%) more effective at texture filtering than the Radeon R9 M375. (explain)

GeForce GTS 150		47360 Mtexels/sec
Radeon R9 M375		40600 Mtexels/sec
	Difference: 6760 (17%)

Pixel Rate

The Radeon R9 M375 should be much (more or less 37%) more effective at anti-aliasing than the GeForce GTS 150, and also able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 M375		16240 Mpixels/sec
GeForce GTS 150		11840 Mpixels/sec
	Difference: 4400 (37%)

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 MB per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.