GeForce GTX 980 vs Radeon HD 5830

Intro

Compare those specs to the Radeon HD 5830, which features a core clock frequency of 800 MHz and a GDDR5 memory speed of 1000 MHz. It also makes use of a 256-bit bus, and uses a 40 nm design. It features 1120(224x5) SPUs, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980		165 Watts
Radeon HD 5830		175 Watts
	Difference: 10 Watts (6%)

Memory Bandwidth

The GeForce GTX 980, in theory, should be much faster than the Radeon HD 5830 overall. (explain)

GeForce GTX 980		224000 MB/sec
Radeon HD 5830		128000 MB/sec
	Difference: 96000 (75%)

Texel Rate

The GeForce GTX 980 will be quite a bit (about 222%) better at texture filtering than the Radeon HD 5830. (explain)

GeForce GTX 980		144128 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 99328 (222%)

Pixel Rate

The GeForce GTX 980 will be much (about 463%) faster with regards to full screen anti-aliasing than the Radeon HD 5830, and will be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 980		72064 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 59264 (463%)

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 max amount of information (in units of megabytes per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs 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 output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.