GeForce GTX 650 Ti 2GB vs Radeon HD 5850

Intro

Compare all that to the Radeon HD 5850, which comes with a core clock frequency of 725 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 256-bit bus, and uses a 40 nm design. It is comprised of 1440(288x5) SPUs, 72 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB		110 Watts
Radeon HD 5850		151 Watts
	Difference: 41 Watts (37%)

Memory Bandwidth

In theory, the Radeon HD 5850 should be much faster than the GeForce GTX 650 Ti 2GB in general. (explain)

Radeon HD 5850		128000 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 41600 (48%)

Texel Rate

The GeForce GTX 650 Ti 2GB should be just a bit (approximately 14%) better at anisotropic filtering than the Radeon HD 5850. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
Radeon HD 5850		52200 Mtexels/sec
	Difference: 7192 (14%)

Pixel Rate

The Radeon HD 5850 is much (approximately 56%) faster with regards to AA than the GeForce GTX 650 Ti 2GB, and capable of handling higher resolutions while still performing well. (explain)

Radeon HD 5850		23200 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 8352 (56%)

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 largest amount of data (measured in megabytes per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.