GeForce GTX 570 vs Radeon HD 4750

Intro

Compare all of that to the Radeon HD 4750, which comes with a clock speed of 730 MHz and a GDDR5 memory frequency of 800 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It is comprised of 640(128x5) SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4750		75 Watts
GeForce GTX 570		219 Watts
	Difference: 144 Watts (192%)

Memory Bandwidth

Performance-wise, the GeForce GTX 570 should theoretically be a lot superior to the Radeon HD 4750 overall. (explain)

GeForce GTX 570		152000 MB/sec
Radeon HD 4750		51200 MB/sec
	Difference: 100800 (197%)

Texel Rate

The GeForce GTX 570 should be a lot (about 88%) faster with regards to anisotropic filtering than the Radeon HD 4750. (explain)

GeForce GTX 570		43920 Mtexels/sec
Radeon HD 4750		23360 Mtexels/sec
	Difference: 20560 (88%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 570 is superior to the Radeon HD 4750, by a large margin. (explain)

GeForce GTX 570		29280 Mpixels/sec
Radeon HD 4750		11680 Mpixels/sec
	Difference: 17600 (151%)

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 (measured in megabytes per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If it uses 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed 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 worked out by multiplying the number of colour ROPs by the the core 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 output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.