GeForce GTX 560 Ti 448 vs Radeon HD 4870 512MB

Intro

Compare those specs to the Radeon HD 4870 512MB, which uses a 55 nm design. AMD has clocked the core speed at 750 MHz. The GDDR5 memory runs at a frequency of 900 MHz on this specific model. It features 800(160x5) SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 512MB		150 Watts
GeForce GTX 560 Ti 448		210 Watts
	Difference: 60 Watts (40%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 560 Ti 448 should theoretically be a lot better than the Radeon HD 4870 512MB in general. (explain)

GeForce GTX 560 Ti 448		144000 MB/sec
Radeon HD 4870 512MB		115200 MB/sec
	Difference: 28800 (25%)

Texel Rate

The GeForce GTX 560 Ti 448 should be much (more or less 37%) faster with regards to AF than the Radeon HD 4870 512MB. (explain)

GeForce GTX 560 Ti 448		40992 Mtexels/sec
Radeon HD 4870 512MB		30000 Mtexels/sec
	Difference: 10992 (37%)

Pixel Rate

The GeForce GTX 560 Ti 448 should be much (approximately 144%) more effective at anti-aliasing than the Radeon HD 4870 512MB, and capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
Radeon HD 4870 512MB		12000 Mpixels/sec
	Difference: 17280 (144%)

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 (counted in megabytes per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, 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 maximum number of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.