GeForce GTX 660 vs Radeon R7 370 4G

Intro

Compare those specs to the Radeon R7 370 4G, which features clock speeds of 975 MHz on the GPU, and 1400 MHz on the 4096 MB of GDDR5 RAM. It features 1024 SPUs as well as 64 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 370 4G		110 Watts
GeForce GTX 660		140 Watts
	Difference: 30 Watts (27%)

Memory Bandwidth

Performance-wise, the Radeon R7 370 4G should in theory be quite a bit superior to the GeForce GTX 660 overall. (explain)

Radeon R7 370 4G		179200 MB/sec
GeForce GTX 660		144192 MB/sec
	Difference: 35008 (24%)

Texel Rate

The GeForce GTX 660 will be much (about 26%) more effective at AF than the Radeon R7 370 4G. (explain)

GeForce GTX 660		78400 Mtexels/sec
Radeon R7 370 4G		62400 Mtexels/sec
	Difference: 16000 (26%)

Pixel Rate

The Radeon R7 370 4G will be a lot (about 33%) more effective at AA than the GeForce GTX 660, and also able to handle higher resolutions while still performing well. (explain)

Radeon R7 370 4G		31200 Mpixels/sec
GeForce GTX 660		23520 Mpixels/sec
	Difference: 7680 (33%)

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 data (in units of MB per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number 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 drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.