GeForce GTX 560 Ti 448 vs Radeon HD 7870

Intro

Compare that to the Radeon HD 7870, which comes with a GPU core clock speed of 1000 MHz, and 2048 MB of GDDR5 RAM running at 1200 MHz through a 256-bit bus. It also is comprised of 1280 SPUs, 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

Radeon HD 7870		6230 points
GeForce GTX 560 Ti 448		4200 points
	Difference: 2030 (48%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870		175 Watts
GeForce GTX 560 Ti 448		210 Watts
	Difference: 35 Watts (20%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7870 should be 7% quicker than the GeForce GTX 560 Ti 448 overall, because of its greater data rate. (explain)

Radeon HD 7870		153600 MB/sec
GeForce GTX 560 Ti 448		144000 MB/sec
	Difference: 9600 (7%)

Texel Rate

The Radeon HD 7870 should be a lot (about 95%) more effective at texture filtering than the GeForce GTX 560 Ti 448. (explain)

Radeon HD 7870		80000 Mtexels/sec
GeForce GTX 560 Ti 448		40992 Mtexels/sec
	Difference: 39008 (95%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 7870 is a better choice, but it probably won't make a huge difference. (explain)

Radeon HD 7870		32000 Mpixels/sec
GeForce GTX 560 Ti 448		29280 Mpixels/sec
	Difference: 2720 (9%)

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 information (in units of megabytes per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses 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 high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.