GeForce GTX 660 vs Radeon R9 M370X

Intro

Compare all of that to the Radeon R9 M370X, which has a core clock frequency of 800 MHz and a GDDR5 memory speed of 1125 MHz. It also features a 128-bit memory bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX 660 will be 100% quicker than the Radeon R9 M370X in general, because of its greater data rate. (explain)

GeForce GTX 660		144192 MB/sec
Radeon R9 M370X		72000 MB/sec
	Difference: 72192 (100%)

Texel Rate

The GeForce GTX 660 will be much (more or less 145%) faster with regards to anisotropic filtering than the Radeon R9 M370X. (explain)

GeForce GTX 660		78400 Mtexels/sec
Radeon R9 M370X		32000 Mtexels/sec
	Difference: 46400 (145%)

Pixel Rate

The GeForce GTX 660 will be much (more or less 84%) better at AA than the Radeon R9 M370X, and also will be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 660		23520 Mpixels/sec
Radeon R9 M370X		12800 Mpixels/sec
	Difference: 10720 (84%)

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 largest amount of data (measured in megabytes per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. 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 worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.