GeForce GTX 660 vs Radeon R9 M375

Intro

Compare all that to the Radeon R9 M375, which has clock speeds of 1015 MHz on the GPU, and 1100 MHz on the 4096 MB of DDR3 RAM. It features 640 SPUs as well as 40 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX 660 is 310% faster than the Radeon R9 M375 overall, due to its greater bandwidth. (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%) faster with regards to anisotropic filtering 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 much (approximately 45%) faster with regards to FSAA than the Radeon R9 M375, and also 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: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units of the card 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 in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.