GeForce GTX 660 vs Radeon RX 480

Intro

Compare that to the Radeon RX 480, which has a core clock frequency of 1120 MHz and a GDDR5 memory speed of 2000 MHz. It also makes use of a 256-bit memory bus, and makes use of a 14 nm design. It is made up of 2304 SPUs, 144 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon RX 480		13349 points
GeForce GTX 660		5063 points
	Difference: 8286 (164%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660		140 Watts
Radeon RX 480		150 Watts
	Difference: 10 Watts (7%)

Memory Bandwidth

In theory, the Radeon RX 480 will be 82% quicker than the GeForce GTX 660 overall, because of its higher data rate. (explain)

Radeon RX 480		262144 MB/sec
GeForce GTX 660		144192 MB/sec
	Difference: 117952 (82%)

Texel Rate

The Radeon RX 480 will be much (about 106%) more effective at texture filtering than the GeForce GTX 660. (explain)

Radeon RX 480		161280 Mtexels/sec
GeForce GTX 660		78400 Mtexels/sec
	Difference: 82880 (106%)

Pixel Rate

The Radeon RX 480 is much (more or less 52%) better at AA than the GeForce GTX 660, and able to handle higher resolutions without slowing down too much. (explain)

Radeon RX 480		35840 Mpixels/sec
GeForce GTX 660		23520 Mpixels/sec
	Difference: 12320 (52%)

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 (counted in MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at 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 that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. 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 is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.