GeForce GTX 560 vs Radeon HD 4750

Intro

Compare those specifications to the Radeon HD 4750, which comes with GPU clock speed of 730 MHz, and 512 MB of GDDR5 memory set to run at 800 MHz through a 128-bit bus. It also is made up of 640(128x5) Stream Processors, 32 TAUs, 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		150 Watts
	Difference: 75 Watts (100%)

Memory Bandwidth

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

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

Texel Rate

The GeForce GTX 560 should be a lot (more or less 94%) faster with regards to texture filtering than the Radeon HD 4750. (explain)

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

Pixel Rate

The GeForce GTX 560 will be quite a bit (about 122%) better at FSAA than the Radeon HD 4750, and will be capable of handling higher screen resolutions more effectively. (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: Memory bandwidth is the max amount of information (in units of MB per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.