GeForce GTX 660 Ti vs Radeon R9 285

Intro

Compare all of that to the Radeon R9 285, which has a clock speed of 918 MHz and a GDDR5 memory frequency of 1375 MHz. It also features a 256-bit bus, and makes use of a 28 nm design. It is comprised of 1792 SPUs, 112 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 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

As far as performance goes, the Radeon R9 285 should theoretically be much superior to the GeForce GTX 660 Ti overall. (explain)

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

Texel Rate

The Radeon R9 285 will be a bit (approximately 0%) better 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 much (approximately 34%) faster with regards to anti-aliasing than the GeForce GTX 660 Ti, and should be capable of handling higher resolutions without losing too much performance. (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: Memory bandwidth is the max amount of information (in units of MB per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster 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 can be applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.