GeForce GTX 660 Ti vs Radeon HD 4550 256MB

Intro

Compare all that to the Radeon HD 4550 256MB, which uses a 55 nm design. AMD has clocked the core frequency at 600 MHz. The DDR3 memory works at a frequency of 800 MHz on this card. It features 80(16x5) SPUs along with 8 Texture Address Units and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 256MB		25 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 125 Watts (500%)

Memory Bandwidth

Performance-wise, the GeForce GTX 660 Ti should theoretically be quite a bit better than the Radeon HD 4550 256MB in general. (explain)

GeForce GTX 660 Ti		144000 MB/sec
Radeon HD 4550 256MB		12800 MB/sec
	Difference: 131200 (1025%)

Texel Rate

The GeForce GTX 660 Ti is a lot (more or less 2035%) faster with regards to AF than the Radeon HD 4550 256MB. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
Radeon HD 4550 256MB		4800 Mtexels/sec
	Difference: 97680 (2035%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 660 Ti is superior to the Radeon HD 4550 256MB, and very much so. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
Radeon HD 4550 256MB		2400 Mpixels/sec
	Difference: 19560 (815%)

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 maximum amount of data (measured in MB per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number 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 card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.