GeForce GTX 650 Ti 2GB vs GeForce GTX 970

Intro

Compare those specifications to the GeForce GTX 970, which features a clock frequency of 1050 MHz and a GDDR5 memory speed of 1750 MHz. It also features a 256-bit memory bus, and uses a 28 nm design. It features 1664 SPUs, 104 Texture Address Units, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB		110 Watts
GeForce GTX 970		145 Watts
	Difference: 35 Watts (32%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 970 should be 159% quicker than the GeForce GTX 650 Ti 2GB in general, because of its higher bandwidth. (explain)

GeForce GTX 970		224000 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 137600 (159%)

Texel Rate

The GeForce GTX 970 is much (approximately 84%) better at anisotropic filtering than the GeForce GTX 650 Ti 2GB. (explain)

GeForce GTX 970		109200 Mtexels/sec
GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
	Difference: 49808 (84%)

Pixel Rate

The GeForce GTX 970 will be quite a bit (about 353%) better at full screen anti-aliasing than the GeForce GTX 650 Ti 2GB, and should be capable of handling higher screen resolutions better. (explain)

GeForce GTX 970		67200 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 52352 (353%)

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 information (in units of megabytes per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per 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 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 maximum amount of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output 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.