GeForce GTX 660 vs Radeon R9 M375

Intro

Compare those specifications to the Radeon R9 M375, which makes use of a 28 nm design. AMD has set the core speed at 1015 MHz. The DDR3 RAM works at a frequency of 1100 MHz on this particular card. It features 640 SPUs as well as 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 660 should perform much faster 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 should be much (approximately 93%) faster with regards to AF than the Radeon R9 M375. (explain)

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

Pixel Rate

The GeForce GTX 660 should be quite a bit (approximately 45%) more effective at AA than the Radeon R9 M375, and will be capable of handling higher resolutions better. (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: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. 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 number of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most 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 number of ROPs by the the core 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 also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.