GeForce GTX 660 vs Radeon RX 470 4GB

Intro

Compare those specs to the Radeon RX 470 4GB, which has a core clock speed of 926 MHz and a GDDR5 memory frequency of 1650 MHz. It also makes use of a 256-bit memory bus, and uses a 14 nm design. It is made up of 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 4GB		120 Watts
GeForce GTX 660		140 Watts
	Difference: 20 Watts (17%)

Memory Bandwidth

The Radeon RX 470 4GB should in theory perform a lot faster than the GeForce GTX 660 overall. (explain)

Radeon RX 470 4GB		211200 MB/sec
GeForce GTX 660		144192 MB/sec
	Difference: 67008 (46%)

Texel Rate

The Radeon RX 470 4GB is much (approximately 51%) better at anisotropic filtering than the GeForce GTX 660. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
GeForce GTX 660		78400 Mtexels/sec
	Difference: 40128 (51%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 470 4GB is superior to the GeForce GTX 660, by far. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
GeForce GTX 660		23520 Mpixels/sec
	Difference: 6112 (26%)

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 max amount of information (in units of megabytes per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.