GeForce GTX 650 Ti 2GB vs Radeon HD 5870

Intro

Compare those specifications to the Radeon HD 5870, which comes with a GPU core clock speed of 850 MHz, and 1024 MB of GDDR5 RAM running at 1200 MHz through a 256-bit bus. It also features 1600(320x5) SPUs, 80 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 2GB		110 Watts
Radeon HD 5870		188 Watts
	Difference: 78 Watts (71%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5870 should be 78% quicker than the GeForce GTX 650 Ti 2GB overall, due to its higher data rate. (explain)

Radeon HD 5870		153600 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 67200 (78%)

Texel Rate

The Radeon HD 5870 should be a little bit (about 14%) more effective at anisotropic filtering than the GeForce GTX 650 Ti 2GB. (explain)

Radeon HD 5870		68000 Mtexels/sec
GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
	Difference: 8608 (14%)

Pixel Rate

The Radeon HD 5870 should be quite a bit (more or less 83%) more effective at AA than the GeForce GTX 650 Ti 2GB, and capable of handling higher resolutions without slowing down too much. (explain)

Radeon HD 5870		27200 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 12352 (83%)

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 (measured in megabytes per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range 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 this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount 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 calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.