GeForce GTX 660 Ti vs Radeon R9 270

Intro

Compare all that to the Radeon R9 270, which uses a 28 nm design. AMD has clocked the core frequency at 900 MHz. The GDDR5 RAM is set to run at a speed of 1400 MHz on this card. It features 1280 SPUs along with 80 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

GeForce GTX 660 Ti		6013 points
Radeon R9 270		5943 points
	Difference: 70 (1%)

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

In theory, the Radeon R9 270 should be 24% faster than the GeForce GTX 660 Ti overall, because of its higher bandwidth. (explain)

Radeon R9 270		179200 MB/sec
GeForce GTX 660 Ti		144000 MB/sec
	Difference: 35200 (24%)

Texel Rate

The GeForce GTX 660 Ti will be quite a bit (about 42%) more effective at anisotropic filtering than the Radeon R9 270. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
Radeon R9 270		72000 Mtexels/sec
	Difference: 30480 (42%)

Pixel Rate

The Radeon R9 270 should be quite a bit (more or less 31%) faster with regards to anti-aliasing than the GeForce GTX 660 Ti, and will be able to handle higher screen resolutions more effectively. (explain)

Radeon R9 270		28800 Mpixels/sec
GeForce GTX 660 Ti		21960 Mpixels/sec
	Difference: 6840 (31%)

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 (counted in megabytes per second) that can be transported over the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed 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 better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. 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, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.