GeForce GTX 650 Ti vs Radeon HD 4550 256MB

Intro

Compare that to the Radeon HD 4550 256MB, which features GPU core speed of 600 MHz, and 256 MB of DDR3 RAM set to run at 800 MHz through a 64-bit bus. It also features 80(16x5) Stream Processors, 8 Texture Address Units, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 256MB		25 Watts
GeForce GTX 650 Ti		110 Watts
	Difference: 85 Watts (340%)

Memory Bandwidth

In theory, the GeForce GTX 650 Ti should be quite a bit faster than the Radeon HD 4550 256MB overall. (explain)

GeForce GTX 650 Ti		86400 MB/sec
Radeon HD 4550 256MB		12800 MB/sec
	Difference: 73600 (575%)

Texel Rate

The GeForce GTX 650 Ti will be a lot (approximately 1137%) better at texture filtering than the Radeon HD 4550 256MB. (explain)

GeForce GTX 650 Ti		59392 Mtexels/sec
Radeon HD 4550 256MB		4800 Mtexels/sec
	Difference: 54592 (1137%)

Pixel Rate

The GeForce GTX 650 Ti will be much (approximately 519%) better at full screen anti-aliasing than the Radeon HD 4550 256MB, and also should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 650 Ti		14848 Mpixels/sec
Radeon HD 4550 256MB		2400 Mpixels/sec
	Difference: 12448 (519%)

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 maximum amount of information (in units of MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core speed of the card. 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 rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.