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 speed at 800 MHz. The GDDR5 RAM works 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

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

The Radeon HD 7950 should theoretically be a lot faster than the GeForce GTX 980M in general. (explain)

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

Texel Rate

The GeForce GTX 980M will be just a bit (more or less 11%) faster with regards to texture filtering than the Radeon HD 7950. (explain)

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

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 980M is a better choice, and very much so. (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: Bandwidth is the largest amount of data (measured in MB per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 can be applied in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends 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.