GeForce GTX 660 vs GeForce GTX 965M

Intro

Compare all of that to the GeForce GTX 965M, which uses a 28 nm design. nVidia has set the core speed at 944 MHz. The GDDR5 RAM works at a frequency of 1000 MHz on this model. It features 1024 SPUs as well as 64 Texture Address Units and 32 Rasterization Operator 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 965M		5650 points
GeForce GTX 660		5063 points
	Difference: 587 (12%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M		60 Watts
GeForce GTX 660		140 Watts
	Difference: 80 Watts (133%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 660 should perform a lot faster than the GeForce GTX 965M in general. (explain)

GeForce GTX 660		144192 MB/sec
GeForce GTX 965M		64000 MB/sec
	Difference: 80192 (125%)

Texel Rate

The GeForce GTX 660 is quite a bit (about 30%) better at AF than the GeForce GTX 965M. (explain)

GeForce GTX 660		78400 Mtexels/sec
GeForce GTX 965M		60416 Mtexels/sec
	Difference: 17984 (30%)

Pixel Rate

The GeForce GTX 965M will be much (approximately 28%) more effective at anti-aliasing than the GeForce GTX 660, and also will be capable of handling higher resolutions better. (explain)

GeForce GTX 965M		30208 Mpixels/sec
GeForce GTX 660		23520 Mpixels/sec
	Difference: 6688 (28%)

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 (measured in MB per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs 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 rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.