GeForce 940M vs Radeon HD 7950

Intro

Compare all that to the Radeon HD 7950, which features a clock frequency of 800 MHz and a GDDR5 memory speed of 1250 MHz. It also uses a 384-bit bus, and uses a 28 nm design. It is made up of 1792 SPUs, 112 Texture Address Units, 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 much (approximately 248%) better at texture filtering 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 should be much (about 199%) faster with regards to AA than the GeForce 940M, and also should be capable of handling higher screen resolutions more effectively. (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: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 are processed per second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). 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 potential to reach the max fill rate.