GeForce 830M vs Radeon HD 5850

Intro

Compare those specs to the Radeon HD 5850, which features a core clock speed of 725 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 256-bit memory bus, and makes use of a 40 nm design. It features 1440(288x5) SPUs, 72 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
Radeon HD 5850		151 Watts
	Difference: 126 Watts (504%)

Memory Bandwidth

Theoretically, the Radeon HD 5850 should be much faster than the GeForce 830M overall. (explain)

Radeon HD 5850		128000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 113600 (789%)

Texel Rate

The Radeon HD 5850 will be a lot (about 217%) better at texture filtering than the GeForce 830M. (explain)

Radeon HD 5850		52200 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 35736 (217%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 5850 is superior to the GeForce 830M, by far. (explain)

Radeon HD 5850		23200 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 14968 (182%)

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 information (in units of MB 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 type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. 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 are processed in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). 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 ability to reach the maximum fill rate.