GeForce GTX 560 Ti vs Radeon HD 4670 512MB

Intro

Compare all that to the Radeon HD 4670 512MB, which has a clock speed of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory frequency of 1000 MHz. It also uses a 128-bit memory bus, and makes use of a 55 nm design. It is comprised of 320(64x5) SPUs, 32 TAUs, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 512MB		70 Watts
GeForce GTX 560 Ti		170 Watts
	Difference: 100 Watts (143%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 560 Ti should in theory be a lot better than the Radeon HD 4670 512MB in general. (explain)

GeForce GTX 560 Ti		128256 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 96256 (301%)

Texel Rate

The GeForce GTX 560 Ti should be a lot (more or less 119%) more effective at AF than the Radeon HD 4670 512MB. (explain)

GeForce GTX 560 Ti		52608 Mtexels/sec
Radeon HD 4670 512MB		24000 Mtexels/sec
	Difference: 28608 (119%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 560 Ti is the winner, and very much so. (explain)

GeForce GTX 560 Ti		26304 Mpixels/sec
Radeon HD 4670 512MB		6000 Mpixels/sec
	Difference: 20304 (338%)

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 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 bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is worked out by multiplying the total amount of texture units of the card by the core 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 processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.