GeForce 830M vs Radeon HD 7950 3GB

Intro

Compare all that to the Radeon HD 7950 3GB, which has core clock speeds of 800 MHz on the GPU, and 1250 MHz on the 3072 MB of GDDR5 memory. It features 1792 SPUs along with 112 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
Radeon HD 7950 3GB		200 Watts
	Difference: 175 Watts (700%)

Memory Bandwidth

The Radeon HD 7950 3GB should in theory perform much faster than the GeForce 830M overall. (explain)

Radeon HD 7950 3GB		240000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 225600 (1567%)

Texel Rate

The Radeon HD 7950 3GB will be a lot (about 444%) faster with regards to AF than the GeForce 830M. (explain)

Radeon HD 7950 3GB		89600 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 73136 (444%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 7950 3GB is superior to the GeForce 830M, and very much so. (explain)

Radeon HD 7950 3GB		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 largest amount of data (measured in MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If 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 amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 bandwidth is, the lower the potential to reach the max fill rate.