GeForce GTX 650 Ti 2GB vs Radeon HD 5850

Intro

Compare those specs to the Radeon HD 5850, which features core speeds of 725 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 1440(288x5) SPUs as well as 72 Texture Address Units and 32 Rasterization Operator 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

The Radeon HD 5850 should theoretically perform a lot faster than the GeForce GTX 650 Ti 2GB overall. (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 a small bit (more or less 14%) better at texture 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 should be quite a bit (approximately 56%) more effective at AA than the GeForce GTX 650 Ti 2GB, and also able to handle higher resolutions better. (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: Bandwidth is the largest amount of data (in units of MB per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better 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 figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also 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 bandwidth is, the lower the potential to reach the maximum fill rate.