GeForce GTX 860M vs Radeon HD 5830

Intro

Compare that to the Radeon HD 5830, which features a clock frequency of 800 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 256-bit bus, and makes use of a 40 nm design. It is comprised of 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 860M		45 Watts
Radeon HD 5830		175 Watts
	Difference: 130 Watts (289%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5830 should in theory be a lot better than the GeForce GTX 860M overall. (explain)

Radeon HD 5830		128000 MB/sec
GeForce GTX 860M		64000 MB/sec
	Difference: 64000 (100%)

Texel Rate

The GeForce GTX 860M is a lot (about 71%) faster with regards to texture filtering than the Radeon HD 5830. (explain)

GeForce GTX 860M		76512 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 31712 (71%)

Pixel Rate

The Radeon HD 5830 should be a small bit (more or less 0%) more effective at full screen anti-aliasing than the GeForce GTX 860M, and also capable of handling higher screen resolutions more effectively. (explain)

Radeon HD 5830		12800 Mpixels/sec
GeForce GTX 860M		12752 Mpixels/sec
	Difference: 48 (0%)

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 maximum amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total texture units by the core 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 a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.