GeForce 830M vs Radeon HD 6970

Intro

Compare those specs to the Radeon HD 6970, which has clock speeds of 880 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs as well as 96 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
Radeon HD 6970		250 Watts
	Difference: 225 Watts (900%)

Memory Bandwidth

The Radeon HD 6970 should theoretically be much faster than the GeForce 830M in general. (explain)

Radeon HD 6970		176000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 161600 (1122%)

Texel Rate

The Radeon HD 6970 will be a lot (approximately 413%) more effective at texture filtering than the GeForce 830M. (explain)

Radeon HD 6970		84480 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 68016 (413%)

Pixel Rate

The Radeon HD 6970 should be a lot (about 242%) faster with regards to anti-aliasing than the GeForce 830M, and also should be capable of handling higher screen resolutions more effectively. (explain)

Radeon HD 6970		28160 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 19928 (242%)

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 (measured in MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's 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 amount of texture map elements (texels) that are processed 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.