GeForce GTX 660 Ti vs Radeon R9 390X 8G

Intro

Compare all that to the Radeon R9 390X 8G, which makes use of a 28 nm design. AMD has clocked the core speed at 1050 MHz. The GDDR5 RAM works at a speed of 1500 MHz on this specific model. It features 2816 SPUs along with 176 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

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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 390X 8G		13555 points
GeForce GTX 660 Ti		6013 points
	Difference: 7542 (125%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti		150 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 125 Watts (83%)

Memory Bandwidth

The Radeon R9 390X 8G, in theory, should be quite a bit faster than the GeForce GTX 660 Ti overall. (explain)

Radeon R9 390X 8G		384000 MB/sec
GeForce GTX 660 Ti		144000 MB/sec
	Difference: 240000 (167%)

Texel Rate

The Radeon R9 390X 8G will be a lot (approximately 80%) better at anisotropic filtering than the GeForce GTX 660 Ti. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
GeForce GTX 660 Ti		102480 Mtexels/sec
	Difference: 82320 (80%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 390X 8G is superior to the GeForce GTX 660 Ti, by far. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
GeForce GTX 660 Ti		21960 Mpixels/sec
	Difference: 45240 (206%)

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 (in units of megabytes per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied 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 better the texel rate, the better the video 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 number of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.