GeForce GTX 660 Ti vs Radeon R9 380X

Intro

Compare those specs to the Radeon R9 380X, which comes with a GPU core clock speed of 970 MHz, and 4096 MB of GDDR5 memory set to run at 1425 MHz through a 256-bit bus. It also is comprised of 2048 SPUs, 128 Texture Address Units, 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 R9 380X		9519 points
GeForce GTX 660 Ti		6013 points
	Difference: 3506 (58%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti		150 Watts
Radeon R9 380X		190 Watts
	Difference: 40 Watts (27%)

Memory Bandwidth

As far as performance goes, the Radeon R9 380X should theoretically be quite a bit superior to the GeForce GTX 660 Ti overall. (explain)

Radeon R9 380X		182400 MB/sec
GeForce GTX 660 Ti		144000 MB/sec
	Difference: 38400 (27%)

Texel Rate

The Radeon R9 380X should be a lot (approximately 21%) more effective at AF than the GeForce GTX 660 Ti. (explain)

Radeon R9 380X		124160 Mtexels/sec
GeForce GTX 660 Ti		102480 Mtexels/sec
	Difference: 21680 (21%)

Pixel Rate

The Radeon R9 380X will be quite a bit (more or less 41%) faster with regards to FSAA than the GeForce GTX 660 Ti, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon R9 380X		31040 Mpixels/sec
GeForce GTX 660 Ti		21960 Mpixels/sec
	Difference: 9080 (41%)

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 maximum amount of information (in units of megabytes per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the graphics 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 chip can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out 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 outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.