GeForce GTX 780 Ti vs Radeon HD 5830

Intro

Compare those specs to the Radeon HD 5830, which comes with GPU core speed of 800 MHz, and 1024 MB of GDDR5 RAM running at 1000 MHz through a 256-bit bus. It also features 1120(224x5) Stream Processors, 56 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5830		175 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 75 Watts (43%)

Memory Bandwidth

The GeForce GTX 780 Ti, in theory, should perform a lot faster than the Radeon HD 5830 overall. (explain)

GeForce GTX 780 Ti		336000 MB/sec
Radeon HD 5830		128000 MB/sec
	Difference: 208000 (163%)

Texel Rate

The GeForce GTX 780 Ti is much (approximately 369%) faster with regards to AF than the Radeon HD 5830. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 165200 (369%)

Pixel Rate

The GeForce GTX 780 Ti should be much (approximately 228%) faster with regards to FSAA than the Radeon HD 5830, and will be able to handle higher resolutions more effectively. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 29200 (228%)

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 (counted in MB per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the video 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 amount of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.