GeForce GTX 660 Ti vs Radeon HD 5570

Intro

Compare those specs to the Radeon HD 5570, which has clock speeds of 650 MHz on the GPU, and 900 MHz on the 512 MB of DDR3 RAM. It features 400(80x5) SPUs along with 20 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 107 Watts (249%)

Memory Bandwidth

Performance-wise, the GeForce GTX 660 Ti should in theory be much superior to the Radeon HD 5570 overall. (explain)

GeForce GTX 660 Ti		144000 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 115200 (400%)

Texel Rate

The GeForce GTX 660 Ti is quite a bit (about 688%) faster with regards to texture filtering than the Radeon HD 5570. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 89480 (688%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 660 Ti is a better choice, by far. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 16760 (322%)

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 largest amount of data (counted in megabytes per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, 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, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out 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 drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.