GeForce GTX 965M vs Geforce GTX 680

Intro

Compare those specs to the Geforce GTX 680, which has GPU core speed of 1006 MHz, and 2048 MB of GDDR5 RAM set to run at 1502 MHz through a 256-bit bus. It also features 1536 SPUs, 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

Geforce GTX 680		7650 points
GeForce GTX 965M		5650 points
	Difference: 2000 (35%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M		60 Watts
Geforce GTX 680		195 Watts
	Difference: 135 Watts (225%)

Memory Bandwidth

As far as performance goes, the Geforce GTX 680 should in theory be quite a bit better than the GeForce GTX 965M in general. (explain)

Geforce GTX 680		192256 MB/sec
GeForce GTX 965M		64000 MB/sec
	Difference: 128256 (200%)

Texel Rate

The Geforce GTX 680 should be a lot (more or less 113%) faster with regards to AF than the GeForce GTX 965M. (explain)

Geforce GTX 680		128768 Mtexels/sec
GeForce GTX 965M		60416 Mtexels/sec
	Difference: 68352 (113%)

Pixel Rate

If using high levels of AA is important to you, then the Geforce GTX 680 is the winner, though not by far. (explain)

Geforce GTX 680		32192 Mpixels/sec
GeForce GTX 965M		30208 Mpixels/sec
	Difference: 1984 (7%)

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 (counted in MB per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of 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 also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.