GeForce GTX 660 Ti vs Radeon R9 380X

Intro

Compare those specifications to the Radeon R9 380X, which uses a 28 nm design. AMD has clocked the core frequency at 970 MHz. The GDDR5 memory is set to run at a speed of 1425 MHz on this model. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

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

The Radeon R9 380X should theoretically be quite a bit faster than 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 much (more or less 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

If using a high screen resolution is important to you, then the Radeon R9 380X is a better choice, and very much so. (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 largest amount of information (measured in megabytes per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the 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 amount of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total number of texture units of the card by the core 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 one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units 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 fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.