GeForce GTX 650 Ti 2GB vs GeForce GTX 965M

Intro

Compare those specs to the GeForce GTX 965M, which has core clock speeds of 944 MHz on the GPU, and 1000 MHz on the 2048 MB of GDDR5 RAM. It features 1024 SPUs as well as 64 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M		60 Watts
GeForce GTX 650 Ti 2GB		110 Watts
	Difference: 50 Watts (83%)

Memory Bandwidth

In theory, the GeForce GTX 650 Ti 2GB is 35% quicker than the GeForce GTX 965M overall, because of its greater bandwidth. (explain)

GeForce GTX 650 Ti 2GB		86400 MB/sec
GeForce GTX 965M		64000 MB/sec
	Difference: 22400 (35%)

Texel Rate

The GeForce GTX 965M is a small bit (about 2%) more effective at AF than the GeForce GTX 650 Ti 2GB. (explain)

GeForce GTX 965M		60416 Mtexels/sec
GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
	Difference: 1024 (2%)

Pixel Rate

The GeForce GTX 965M should be much (more or less 103%) better at FSAA than the GeForce GTX 650 Ti 2GB, and capable of handling higher screen resolutions better. (explain)

GeForce GTX 965M		30208 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 15360 (103%)

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 data (in units of MB per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses 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 texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units 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 processed per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.