GeForce GTX 550 Ti vs Radeon HD 3650 512MB

Intro

Compare those specs to the Radeon HD 3650 512MB, which features a clock speed of 725 MHz and a GDDR3 memory speed of 800 MHz. It also makes use of a 128-bit memory bus, and uses a 55 nm design. It is comprised of 120(24x5) SPUs, 8 Texture Address Units, and 4 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 512MB		78 Watts
GeForce GTX 550 Ti		116 Watts
	Difference: 38 Watts (49%)

Memory Bandwidth

In theory, the GeForce GTX 550 Ti should be quite a bit faster than the Radeon HD 3650 512MB in general. (explain)

GeForce GTX 550 Ti		98496 MB/sec
Radeon HD 3650 512MB		25600 MB/sec
	Difference: 72896 (285%)

Texel Rate

The GeForce GTX 550 Ti should be a lot (approximately 397%) better at AF than the Radeon HD 3650 512MB. (explain)

GeForce GTX 550 Ti		28800 Mtexels/sec
Radeon HD 3650 512MB		5800 Mtexels/sec
	Difference: 23000 (397%)

Pixel Rate

The GeForce GTX 550 Ti is much (about 645%) faster with regards to AA than the Radeon HD 3650 512MB, and capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 550 Ti		21600 Mpixels/sec
Radeon HD 3650 512MB		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: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.