GeForce 830M vs Radeon HD 7950

Intro

Compare those specifications to the Radeon HD 7950, which features clock speeds of 800 MHz on the GPU, and 1250 MHz on the 1536 MB of GDDR5 memory. It features 1792 SPUs along with 112 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
Radeon HD 7950		200 Watts
	Difference: 175 Watts (700%)

Memory Bandwidth

Performance-wise, the Radeon HD 7950 should in theory be a lot superior to the GeForce 830M in general. (explain)

Radeon HD 7950		240000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 225600 (1567%)

Texel Rate

The Radeon HD 7950 will be quite a bit (about 444%) more effective at texture filtering than the GeForce 830M. (explain)

Radeon HD 7950		89600 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 73136 (444%)

Pixel Rate

The Radeon HD 7950 is a lot (more or less 211%) more effective at FSAA than the GeForce 830M, and also able to handle higher screen resolutions more effectively. (explain)

Radeon HD 7950		25600 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 17368 (211%)

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 max amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics 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 Raster Operations Pipelines by the the core 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 many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.