GeForce GTX 560 vs Radeon HD 4750

Intro

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

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4750		75 Watts
GeForce GTX 560		150 Watts
	Difference: 75 Watts (100%)

Memory Bandwidth

In theory, the GeForce GTX 560 should be 150% faster than the Radeon HD 4750 overall, because of its higher bandwidth. (explain)

GeForce GTX 560		128128 MB/sec
Radeon HD 4750		51200 MB/sec
	Difference: 76928 (150%)

Texel Rate

The GeForce GTX 560 is quite a bit (about 94%) more effective at AF than the Radeon HD 4750. (explain)

GeForce GTX 560		45360 Mtexels/sec
Radeon HD 4750		23360 Mtexels/sec
	Difference: 22000 (94%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 560 is superior to the Radeon HD 4750, and very much so. (explain)

GeForce GTX 560		25920 Mpixels/sec
Radeon HD 4750		11680 Mpixels/sec
	Difference: 14240 (122%)

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 past the external memory interface in a second. It's 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 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. 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 is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.