GeForce GTS 250 512MB vs Radeon R9 M375

Intro

Compare those specifications to the Radeon R9 M375, which features GPU clock speed of 1015 MHz, and 4096 MB of DDR3 RAM running at 1100 MHz through a 128-bit bus. It also features 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTS 250 512MB should be much faster than the Radeon R9 M375 overall. (explain)

GeForce GTS 250 512MB		70400 MB/sec
Radeon R9 M375		35200 MB/sec
	Difference: 35200 (100%)

Texel Rate

The GeForce GTS 250 512MB should be a small bit (more or less 16%) better at AF than the Radeon R9 M375. (explain)

GeForce GTS 250 512MB		47232 Mtexels/sec
Radeon R9 M375		40600 Mtexels/sec
	Difference: 6632 (16%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 M375 is a better choice, by a large margin. (explain)

Radeon R9 M375		16240 Mpixels/sec
GeForce GTS 250 512MB		11808 Mpixels/sec
	Difference: 4432 (38%)

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 MB per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.