GeForce GTX 560 Ti vs Radeon HD 4750

Intro

Compare all that to the Radeon HD 4750, which comes with a core clock frequency of 730 MHz and a GDDR5 memory speed of 800 MHz. It also makes use of a 128-bit memory bus, and makes use of a 40 nm design. It is comprised of 640(128x5) SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4750		75 Watts
GeForce GTX 560 Ti		170 Watts
	Difference: 95 Watts (127%)

Memory Bandwidth

The GeForce GTX 560 Ti should theoretically perform much faster than the Radeon HD 4750 overall. (explain)

GeForce GTX 560 Ti		128256 MB/sec
Radeon HD 4750		51200 MB/sec
	Difference: 77056 (151%)

Texel Rate

The GeForce GTX 560 Ti will be much (about 125%) more effective at AF than the Radeon HD 4750. (explain)

GeForce GTX 560 Ti		52608 Mtexels/sec
Radeon HD 4750		23360 Mtexels/sec
	Difference: 29248 (125%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 560 Ti is superior to the Radeon HD 4750, and very much so. (explain)

GeForce GTX 560 Ti		26304 Mpixels/sec
Radeon HD 4750		11680 Mpixels/sec
	Difference: 14624 (125%)

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 data (measured in MB per second) that can be transported across 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 should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, 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 number of texture units by the core clock speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one 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. The number is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.