GeForce 930M vs Radeon HD 7950 3GB

Intro

Compare those specifications to the Radeon HD 7950 3GB, which makes use of a 28 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 memory is set to run at a speed of 1250 MHz on this particular card. It features 1792 SPUs along with 112 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 7950 3GB should perform quite a bit faster than the GeForce 930M overall. (explain)

Radeon HD 7950 3GB		240000 MB/sec
GeForce 930M		14400 MB/sec
	Difference: 225600 (1567%)

Texel Rate

The Radeon HD 7950 3GB is quite a bit (approximately 302%) better at texture filtering than the GeForce 930M. (explain)

Radeon HD 7950 3GB		89600 Mtexels/sec
GeForce 930M		22272 Mtexels/sec
	Difference: 67328 (302%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 7950 3GB is superior to the GeForce 930M, and very much so. (explain)

Radeon HD 7950 3GB		25600 Mpixels/sec
GeForce 930M		7424 Mpixels/sec
	Difference: 18176 (245%)

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 megabytes per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.