GeForce GTX 660 Ti vs Radeon R9 285

Intro

Compare those specs to the Radeon R9 285, which uses a 28 nm design. AMD has set the core frequency at 918 MHz. The GDDR5 RAM runs at a frequency of 1375 MHz on this model. It features 1792 SPUs as well as 112 Texture Address Units and 32 ROPs.

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 285		8500 points
GeForce GTX 660 Ti		6013 points
	Difference: 2487 (41%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti		150 Watts
Radeon R9 285		190 Watts
	Difference: 40 Watts (27%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 285 should be 22% faster than the GeForce GTX 660 Ti overall, due to its higher data rate. (explain)

Radeon R9 285		176000 MB/sec
GeForce GTX 660 Ti		144000 MB/sec
	Difference: 32000 (22%)

Texel Rate

The Radeon R9 285 should be just a bit (approximately 0%) more effective at anisotropic filtering than the GeForce GTX 660 Ti. (explain)

Radeon R9 285		102816 Mtexels/sec
GeForce GTX 660 Ti		102480 Mtexels/sec
	Difference: 336 (0%)

Pixel Rate

The Radeon R9 285 will be a lot (approximately 34%) better at FSAA than the GeForce GTX 660 Ti, and also able to handle higher resolutions better. (explain)

Radeon R9 285		29376 Mpixels/sec
GeForce GTX 660 Ti		21960 Mpixels/sec
	Difference: 7416 (34%)

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 data (measured in megabytes per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.