GeForce GTX 980M vs Radeon HD 7970

Intro

Compare those specifications to the Radeon HD 7970, which comes with GPU core speed of 925 MHz, and 3072 MB of GDDR5 memory running at 1375 MHz through a 384-bit bus. It also is made up of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

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 7970		8225 points
	Difference: 1251 (15%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980M		100 Watts
Radeon HD 7970		250 Watts
	Difference: 150 Watts (150%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7970 should perform quite a bit faster than the GeForce GTX 980M overall. (explain)

Radeon HD 7970		264000 MB/sec
GeForce GTX 980M		128000 MB/sec
	Difference: 136000 (106%)

Texel Rate

The Radeon HD 7970 should be a small bit (approximately 19%) faster with regards to texture filtering than the GeForce GTX 980M. (explain)

Radeon HD 7970		118400 Mtexels/sec
GeForce GTX 980M		99648 Mtexels/sec
	Difference: 18752 (19%)

Pixel Rate

The GeForce GTX 980M will be quite a bit (more or less 124%) better at full screen anti-aliasing than the Radeon HD 7970, and also will be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 980M		66432 Mpixels/sec
Radeon HD 7970		29600 Mpixels/sec
	Difference: 36832 (124%)

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 (measured in MB per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.