GeForce GTX 965M vs Geforce GTX 770

Intro

Compare those specs to the Geforce GTX 770, which comes with clock speeds of 1046 MHz on the GPU, and 1753 MHz on the 2048 MB of GDDR5 memory. It features 1536 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

Geforce GTX 770		7854 points
GeForce GTX 965M		5650 points
	Difference: 2204 (39%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M		60 Watts
Geforce GTX 770		230 Watts
	Difference: 170 Watts (283%)

Memory Bandwidth

The Geforce GTX 770 should in theory perform much faster than the GeForce GTX 965M overall. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GTX 965M		64000 MB/sec
	Difference: 160384 (251%)

Texel Rate

The Geforce GTX 770 will be much (about 122%) more effective at texture filtering than the GeForce GTX 965M. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GTX 965M		60416 Mtexels/sec
	Difference: 73472 (122%)

Pixel Rate

The Geforce GTX 770 will be just a bit (approximately 11%) faster with regards to anti-aliasing than the GeForce GTX 965M, and also should be capable of handling higher screen resolutions more effectively. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GTX 965M		30208 Mpixels/sec
	Difference: 3264 (11%)

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 past the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 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 AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total number of texture units of the card by the core clock 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 processed in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.