GeForce GTX 550 Ti vs Radeon HD 3650

Intro

Compare all that to the Radeon HD 3650, which has core speeds of 725 MHz on the GPU, and 800 MHz on the 1024 MB of GDDR4 memory. It features 120(24x5) SPUs as well as 8 TAUs and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650		78 Watts
GeForce GTX 550 Ti		116 Watts
	Difference: 38 Watts (49%)

Memory Bandwidth

In theory, the GeForce GTX 550 Ti should be 285% faster than the Radeon HD 3650 in general, because of its greater bandwidth. (explain)

GeForce GTX 550 Ti		98496 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 72896 (285%)

Texel Rate

The GeForce GTX 550 Ti is much (about 397%) faster with regards to anisotropic filtering than the Radeon HD 3650. (explain)

GeForce GTX 550 Ti		28800 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 23000 (397%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 550 Ti is the winner, and very much so. (explain)

GeForce GTX 550 Ti		21600 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 18700 (645%)

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 max amount of data (counted in megabytes per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill 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 get to the max fill rate.