GeForce GTX 650 Ti vs Radeon HD 5850

Intro

Compare those specs to the Radeon HD 5850, which features GPU clock speed of 725 MHz, and 1024 MB of GDDR5 memory running at 1000 MHz through a 256-bit bus. It also is made up of 1440(288x5) SPUs, 72 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Performance-wise, the Radeon HD 5850 should in theory be a lot better than the GeForce GTX 650 Ti overall. (explain)

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

Texel Rate

The GeForce GTX 650 Ti will be a small bit (more or less 14%) faster with regards to AF than the Radeon HD 5850. (explain)

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

Pixel Rate

The Radeon HD 5850 should be a lot (more or less 56%) more effective at FSAA than the GeForce GTX 650 Ti, and also will be able to handle higher resolutions more effectively. (explain)

Radeon HD 5850		23200 Mpixels/sec
GeForce GTX 650 Ti		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 transported across the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 can be applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount 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 fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.