GeForce GTX 275 vs Radeon R9 M375X

Intro

Compare that to the Radeon R9 M375X, which has a clock speed of 1015 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 275 should be 76% quicker than the Radeon R9 M375X overall, because of its greater bandwidth. (explain)

GeForce GTX 275		127008 MB/sec
Radeon R9 M375X		72000 MB/sec
	Difference: 55008 (76%)

Texel Rate

The GeForce GTX 275 is quite a bit (more or less 25%) better at AF than the Radeon R9 M375X. (explain)

GeForce GTX 275		50640 Mtexels/sec
Radeon R9 M375X		40600 Mtexels/sec
	Difference: 10040 (25%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 275 is the winner, but only just. (explain)

GeForce GTX 275		17724 Mpixels/sec
Radeon R9 M375X		16240 Mpixels/sec
	Difference: 1484 (9%)

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 transferred across the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.