GeForce GTX 580 vs GeForce GTX 965M

Intro

Compare those specifications to the GeForce GTX 965M, which uses a 28 nm design. nVidia has clocked the core speed at 944 MHz. The GDDR5 memory runs at a frequency of 1000 MHz on this particular model. It features 1024 SPUs as well as 64 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 965M		5650 points
GeForce GTX 580		4956 points
	Difference: 694 (14%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M		60 Watts
GeForce GTX 580		244 Watts
	Difference: 184 Watts (307%)

Memory Bandwidth

The GeForce GTX 580, in theory, should perform much faster than the GeForce GTX 965M in general. (explain)

GeForce GTX 580		192384 MB/sec
GeForce GTX 965M		64000 MB/sec
	Difference: 128384 (201%)

Texel Rate

The GeForce GTX 965M should be a lot (about 22%) faster with regards to anisotropic filtering than the GeForce GTX 580. (explain)

GeForce GTX 965M		60416 Mtexels/sec
GeForce GTX 580		49408 Mtexels/sec
	Difference: 11008 (22%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 580 is superior to the GeForce GTX 965M, by far. (explain)

GeForce GTX 580		37056 Mpixels/sec
GeForce GTX 965M		30208 Mpixels/sec
	Difference: 6848 (23%)

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 megabytes per second) that can be transported across the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once 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 anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.