GeForce GTX 560 Ti vs Radeon HD 4650 512MB

Intro

Compare those specs to the Radeon HD 4650 512MB, which comes with clock speeds of 600 MHz on the GPU, and 500 MHz on the 512 MB of DDR2 RAM. It features 320(64x5) SPUs along with 32 TAUs and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 512MB		55 Watts
GeForce GTX 560 Ti		170 Watts
	Difference: 115 Watts (209%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 560 Ti should theoretically be a lot superior to the Radeon HD 4650 512MB in general. (explain)

GeForce GTX 560 Ti		128256 MB/sec
Radeon HD 4650 512MB		16000 MB/sec
	Difference: 112256 (702%)

Texel Rate

The GeForce GTX 560 Ti will be a lot (more or less 174%) more effective at AF than the Radeon HD 4650 512MB. (explain)

GeForce GTX 560 Ti		52608 Mtexels/sec
Radeon HD 4650 512MB		19200 Mtexels/sec
	Difference: 33408 (174%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 560 Ti is superior to the Radeon HD 4650 512MB, by a large margin. (explain)

GeForce GTX 560 Ti		26304 Mpixels/sec
Radeon HD 4650 512MB		4800 Mpixels/sec
	Difference: 21504 (448%)

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 data (counted in megabytes per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the graphics 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 maximum number of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.