Geforce GTX 770 vs Radeon HD 5830

Intro

Compare all that to the Radeon HD 5830, which features a core clock speed of 800 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 256-bit bus, and uses a 40 nm design. It is made up of 1120(224x5) SPUs, 56 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5830		175 Watts
Geforce GTX 770		230 Watts
	Difference: 55 Watts (31%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 770 is 75% faster than the Radeon HD 5830 overall, because of its higher bandwidth. (explain)

Geforce GTX 770		224384 MB/sec
Radeon HD 5830		128000 MB/sec
	Difference: 96384 (75%)

Texel Rate

The Geforce GTX 770 should be quite a bit (more or less 199%) faster with regards to AF than the Radeon HD 5830. (explain)

Geforce GTX 770		133888 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 89088 (199%)

Pixel Rate

The Geforce GTX 770 should be a lot (about 162%) more effective at FSAA than the Radeon HD 5830, and should be capable of handling higher resolutions better. (explain)

Geforce GTX 770		33472 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 20672 (162%)

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: Memory bandwidth is the largest amount of information (counted in MB per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 number of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the video 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 amount of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out 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 drawing the pixels (image) on the screen. The actual pixel 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.