GeForce GTX 660 vs Radeon R9 M375

Intro

Compare those specs to the Radeon R9 M375, which makes use of a 28 nm design. AMD has clocked the core frequency at 1015 MHz. The DDR3 memory works at a speed of 1100 MHz on this particular card. It features 640 SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce GTX 660 should theoretically be much better than the Radeon R9 M375 in general. (explain)

GeForce GTX 660		144192 MB/sec
Radeon R9 M375		35200 MB/sec
	Difference: 108992 (310%)

Texel Rate

The GeForce GTX 660 will be a lot (approximately 93%) better at AF than the Radeon R9 M375. (explain)

GeForce GTX 660		78400 Mtexels/sec
Radeon R9 M375		40600 Mtexels/sec
	Difference: 37800 (93%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 660 is superior to the Radeon R9 M375, by a large margin. (explain)

GeForce GTX 660		23520 Mpixels/sec
Radeon R9 M375		16240 Mpixels/sec
	Difference: 7280 (45%)

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 megabytes per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at 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 video card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many 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.