GeForce GTX 980M vs Geforce GTX 670

Intro

Compare all that to the Geforce GTX 670, which has GPU clock speed of 915 MHz, and 2048 MB of GDDR5 RAM running at 1500 MHz through a 256-bit bus. It also features 1344 Stream Processors, 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
Geforce GTX 670		7351 points
	Difference: 2125 (29%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980M		100 Watts
Geforce GTX 670		170 Watts
	Difference: 70 Watts (70%)

Memory Bandwidth

Performance-wise, the Geforce GTX 670 should theoretically be much better than the GeForce GTX 980M in general. (explain)

Geforce GTX 670		192000 MB/sec
GeForce GTX 980M		128000 MB/sec
	Difference: 64000 (50%)

Texel Rate

The Geforce GTX 670 is a bit (more or less 3%) more effective at AF than the GeForce GTX 980M. (explain)

Geforce GTX 670		102480 Mtexels/sec
GeForce GTX 980M		99648 Mtexels/sec
	Difference: 2832 (3%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 980M is a better choice, and very much so. (explain)

GeForce GTX 980M		66432 Mpixels/sec
Geforce GTX 670		29280 Mpixels/sec
	Difference: 37152 (127%)

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 information (in units of MB per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 per second. This is worked out by multiplying the total number 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output 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.