GeForce GTX 880M vs Radeon HD 4830 512MB

Intro

Compare those specs to the Radeon HD 4830 512MB, which features GPU core speed of 575 MHz, and 512 MB of GDDR3 RAM running at 900 MHz through a 256-bit bus. It also is made up of 640(128x5) Stream Processors, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 512MB		95 Watts
GeForce GTX 880M		130 Watts
	Difference: 35 Watts (37%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 880M should in theory be a lot superior to the Radeon HD 4830 512MB in general. (explain)

GeForce GTX 880M		128000 MB/sec
Radeon HD 4830 512MB		57600 MB/sec
	Difference: 70400 (122%)

Texel Rate

The GeForce GTX 880M will be a lot (approximately 564%) more effective at texture filtering than the Radeon HD 4830 512MB. (explain)

GeForce GTX 880M		122112 Mtexels/sec
Radeon HD 4830 512MB		18400 Mtexels/sec
	Difference: 103712 (564%)

Pixel Rate

The GeForce GTX 880M will be much (about 232%) more effective at full screen anti-aliasing than the Radeon HD 4830 512MB, and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 880M		30528 Mpixels/sec
Radeon HD 4830 512MB		9200 Mpixels/sec
	Difference: 21328 (232%)

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 the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 applied in one second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.