GeForce 940M vs Radeon HD 7950

Intro

Compare that to the Radeon HD 7950, which features GPU clock speed of 800 MHz, and 1536 MB of GDDR5 RAM running at 1250 MHz through a 384-bit bus. It also features 1792 SPUs, 112 TAUs, and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 7950		7731 points
GeForce 940M		1740 points
	Difference: 5991 (344%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 7950 should in theory be much better than the GeForce 940M overall. (explain)

Radeon HD 7950		240000 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 224000 (1400%)

Texel Rate

The Radeon HD 7950 will be quite a bit (about 248%) faster with regards to AF than the GeForce 940M. (explain)

Radeon HD 7950		89600 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 63872 (248%)

Pixel Rate

The Radeon HD 7950 is much (approximately 199%) better at FSAA than the GeForce 940M, and will be able to handle higher screen resolutions better. (explain)

Radeon HD 7950		25600 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 17024 (199%)

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 max amount of data (in units of MB per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 per second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the graphics 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 number of pixels the graphics card could possibly write to the local memory in a 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 outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.