GeForce GTX 560 Ti vs Radeon HD 4870 2GB

Intro

Compare all of that to the Radeon HD 4870 2GB, which makes use of a 55 nm design. AMD has clocked the core speed at 750 MHz. The GDDR5 memory works at a speed of 900 MHz on this particular card. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 2GB		150 Watts
GeForce GTX 560 Ti		170 Watts
	Difference: 20 Watts (13%)

Memory Bandwidth

The GeForce GTX 560 Ti should theoretically perform a little bit faster than the Radeon HD 4870 2GB overall. (explain)

GeForce GTX 560 Ti		128256 MB/sec
Radeon HD 4870 2GB		115200 MB/sec
	Difference: 13056 (11%)

Texel Rate

The GeForce GTX 560 Ti will be much (more or less 75%) faster with regards to AF than the Radeon HD 4870 2GB. (explain)

GeForce GTX 560 Ti		52608 Mtexels/sec
Radeon HD 4870 2GB		30000 Mtexels/sec
	Difference: 22608 (75%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 560 Ti is superior to the Radeon HD 4870 2GB, by far. (explain)

GeForce GTX 560 Ti		26304 Mpixels/sec
Radeon HD 4870 2GB		12000 Mpixels/sec
	Difference: 14304 (119%)

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 transferred over the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 texture map elements (texels) that can be applied per second. This is worked out by multiplying the total amount of texture units 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 a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.