GeForce GTX 970M vs Radeon HD 7970

Intro

Compare that to the Radeon HD 7970, which uses a 28 nm design. AMD has clocked the core frequency at 925 MHz. The GDDR5 memory is set to run at a frequency of 1375 MHz on this particular model. It features 2048 SPUs as well as 128 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 7970		8225 points
GeForce GTX 970M		7520 points
	Difference: 705 (9%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970M		75 Watts
Radeon HD 7970		250 Watts
	Difference: 175 Watts (233%)

Memory Bandwidth

The Radeon HD 7970 should in theory perform quite a bit faster than the GeForce GTX 970M in general. (explain)

Radeon HD 7970		264000 MB/sec
GeForce GTX 970M		96000 MB/sec
	Difference: 168000 (175%)

Texel Rate

The Radeon HD 7970 will be a lot (more or less 60%) better at AF than the GeForce GTX 970M. (explain)

Radeon HD 7970		118400 Mtexels/sec
GeForce GTX 970M		73920 Mtexels/sec
	Difference: 44480 (60%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 970M is superior to the Radeon HD 7970, and very much so. (explain)

GeForce GTX 970M		44352 Mpixels/sec
Radeon HD 7970		29600 Mpixels/sec
	Difference: 14752 (50%)

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 information (measured in MB per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the 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 are applied in one second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.