Geforce GTX 770 vs Radeon HD 5850

Intro

Compare those specifications to the Radeon HD 5850, which makes use of a 40 nm design. AMD has set the core frequency at 725 MHz. The GDDR5 RAM works at a frequency of 1000 MHz on this specific model. It features 1440(288x5) SPUs along with 72 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5850		151 Watts
Geforce GTX 770		230 Watts
	Difference: 79 Watts (52%)

Memory Bandwidth

The Geforce GTX 770 should theoretically be a lot faster than the Radeon HD 5850 in general. (explain)

Geforce GTX 770		224384 MB/sec
Radeon HD 5850		128000 MB/sec
	Difference: 96384 (75%)

Texel Rate

The Geforce GTX 770 will be much (about 156%) faster with regards to texture filtering than the Radeon HD 5850. (explain)

Geforce GTX 770		133888 Mtexels/sec
Radeon HD 5850		52200 Mtexels/sec
	Difference: 81688 (156%)

Pixel Rate

The Geforce GTX 770 is much (about 44%) better at AA than the Radeon HD 5850, and also will be capable of handling higher resolutions more effectively. (explain)

Geforce GTX 770		33472 Mpixels/sec
Radeon HD 5850		23200 Mpixels/sec
	Difference: 10272 (44%)

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 maximum amount of data (in units of megabytes per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, 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 most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of 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 rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.