GeForce GTX 660 Ti vs Radeon HD 7870 XT

Intro

Compare those specs to the Radeon HD 7870 XT, which uses a 28 nm design. AMD has clocked the core frequency at 925 MHz. The GDDR5 memory runs at a speed of 1500 MHz on this specific card. It features 1536 SPUs along with 96 TAUs 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 HD 7870 XT		6390 points
GeForce GTX 660 Ti		6013 points
	Difference: 377 (6%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti		150 Watts
Radeon HD 7870 XT		185 Watts
	Difference: 35 Watts (23%)

Memory Bandwidth

The Radeon HD 7870 XT should in theory perform much faster than the GeForce GTX 660 Ti overall. (explain)

Radeon HD 7870 XT		192000 MB/sec
GeForce GTX 660 Ti		144000 MB/sec
	Difference: 48000 (33%)

Texel Rate

The GeForce GTX 660 Ti is a bit (approximately 15%) better at AF than the Radeon HD 7870 XT. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
Radeon HD 7870 XT		88800 Mtexels/sec
	Difference: 13680 (15%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 7870 XT is a better choice, and very much so. (explain)

Radeon HD 7870 XT		29600 Mpixels/sec
GeForce GTX 660 Ti		21960 Mpixels/sec
	Difference: 7640 (35%)

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 over the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

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