GeForce GTX 560 vs Radeon HD 4750

Intro

Compare all of that to the Radeon HD 4750, which comes with core clock speeds of 730 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 memory. It features 640(128x5) SPUs along with 32 Texture Address Units and 16 Rasterization Operator 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 in theory perform quite a bit 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 is much (more or less 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

The GeForce GTX 560 is quite a bit (more or less 122%) faster with regards to full screen anti-aliasing than the Radeon HD 4750, and will be able to handle higher screen resolutions while still performing well. (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 data (counted in MB per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.