GeForce GTX 650 Ti 2GB vs Radeon HD 3850 1GB

Intro

Compare all that to the Radeon HD 3850 1GB, which uses a 55 nm design. AMD has set the core speed at 668 MHz. The GDDR3 memory works at a speed of 828 MHz on this specific model. It features 320(64x5) SPUs along with 16 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3850 1GB		75 Watts
GeForce GTX 650 Ti 2GB		110 Watts
	Difference: 35 Watts (47%)

Memory Bandwidth

In theory, the GeForce GTX 650 Ti 2GB should be quite a bit faster than the Radeon HD 3850 1GB in general. (explain)

GeForce GTX 650 Ti 2GB		86400 MB/sec
Radeon HD 3850 1GB		52992 MB/sec
	Difference: 33408 (63%)

Texel Rate

The GeForce GTX 650 Ti 2GB should be quite a bit (approximately 456%) faster with regards to AF than the Radeon HD 3850 1GB. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
Radeon HD 3850 1GB		10688 Mtexels/sec
	Difference: 48704 (456%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 650 Ti 2GB is superior to the Radeon HD 3850 1GB, by a large margin. (explain)

GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
Radeon HD 3850 1GB		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: Bandwidth is the max amount of information (counted in megabytes per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.