GeForce GTX 650 Ti 2GB vs GeForce GTX 980

Intro

Compare those specifications to the GeForce GTX 980, which uses a 28 nm design. nVidia has clocked the core speed at 1126 MHz. The GDDR5 RAM is set to run at a speed of 1750 MHz on this specific model. It features 2048 SPUs as well as 128 TAUs and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB		110 Watts
GeForce GTX 980		165 Watts
	Difference: 55 Watts (50%)

Memory Bandwidth

In theory, the GeForce GTX 980 should perform quite a bit faster than the GeForce GTX 650 Ti 2GB overall. (explain)

GeForce GTX 980		224000 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 137600 (159%)

Texel Rate

The GeForce GTX 980 is a lot (about 143%) faster with regards to AF than the GeForce GTX 650 Ti 2GB. (explain)

GeForce GTX 980		144128 Mtexels/sec
GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
	Difference: 84736 (143%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 980 is a better choice, by far. (explain)

GeForce GTX 980		72064 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 57216 (385%)

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: Memory bandwidth is the max amount of information (counted in MB per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 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 AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total amount of texture units of the card 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 applied in one second.

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