GeForce GTX 850M vs Radeon HD 7950

Intro

Compare all that to the Radeon HD 7950, which makes use of a 28 nm design. AMD has set the core speed at 800 MHz. The GDDR5 memory runs at a speed of 1250 MHz on this model. It features 1792 SPUs along with 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 GTX 850M		3340 points
	Difference: 4391 (131%)

Zcash Mining Hash Rate

Radeon HD 7950		235 Sol/s
GeForce GTX 850M		49 Sol/s
	Difference: 186 (380%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
Radeon HD 7950		200 Watts
	Difference: 160 Watts (400%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7950 should be a lot faster than the GeForce GTX 850M in general. (explain)

Radeon HD 7950		240000 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 208000 (650%)

Texel Rate

The Radeon HD 7950 will be quite a bit (approximately 156%) better at texture filtering than the GeForce GTX 850M. (explain)

Radeon HD 7950		89600 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 54560 (156%)

Pixel Rate

The Radeon HD 7950 should be much (about 83%) faster with regards to AA than the GeForce GTX 850M, and capable of handling higher resolutions more effectively. (explain)

Radeon HD 7950		25600 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 11584 (83%)

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 data (counted in MB per second) that can be transported past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video 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 the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the clock speed of the card. 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 also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.