GeForce GTX 650 Ti 2GB vs Radeon HD 3850 512MB

Intro

Compare all of that to the Radeon HD 3850 512MB, which has GPU core speed of 668 MHz, and 512 MB of GDDR3 RAM set to run at 828 MHz through a 256-bit bus. It also is comprised of 320(64x5) SPUs, 16 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3850 512MB		75 Watts
GeForce GTX 650 Ti 2GB		110 Watts
	Difference: 35 Watts (47%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 650 Ti 2GB should in theory be a lot superior to the Radeon HD 3850 512MB overall. (explain)

GeForce GTX 650 Ti 2GB		86400 MB/sec
Radeon HD 3850 512MB		52992 MB/sec
	Difference: 33408 (63%)

Texel Rate

The GeForce GTX 650 Ti 2GB should be much (approximately 456%) more effective at texture filtering than the Radeon HD 3850 512MB. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
Radeon HD 3850 512MB		10688 Mtexels/sec
	Difference: 48704 (456%)

Pixel Rate

The GeForce GTX 650 Ti 2GB will be much (about 39%) better at AA than the Radeon HD 3850 512MB, and also should be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
Radeon HD 3850 512MB		10688 Mpixels/sec
	Difference: 4160 (39%)

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 information (measured in MB per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 per second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the graphics 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 number of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.