GeForce GTX 980M vs Radeon HD 7950

Intro

Compare that to the Radeon HD 7950, which makes use of a 28 nm design. AMD has clocked the core frequency at 800 MHz. The GDDR5 RAM works at a frequency of 1250 MHz on this particular model. It features 1792 SPUs along with 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

GeForce GTX 980M		9476 points
Radeon HD 7950		7731 points
	Difference: 1745 (23%)

Zcash Mining Hash Rate

Radeon HD 7950		235 Sol/s
GeForce GTX 980M		155 Sol/s
	Difference: 80 (52%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980M		100 Watts
Radeon HD 7950		200 Watts
	Difference: 100 Watts (100%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7950 is 88% faster than the GeForce GTX 980M in general, because of its greater data rate. (explain)

Radeon HD 7950		240000 MB/sec
GeForce GTX 980M		128000 MB/sec
	Difference: 112000 (88%)

Texel Rate

The GeForce GTX 980M should be a bit (about 11%) more effective at AF than the Radeon HD 7950. (explain)

GeForce GTX 980M		99648 Mtexels/sec
Radeon HD 7950		89600 Mtexels/sec
	Difference: 10048 (11%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 980M is a better choice, by a large margin. (explain)

GeForce GTX 980M		66432 Mpixels/sec
Radeon HD 7950		25600 Mpixels/sec
	Difference: 40832 (160%)

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 max amount of information (measured in megabytes per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.