GeForce GTX 650 Ti 2GB vs GeForce GTX 980 Ti

Intro

Compare those specifications to the GeForce GTX 980 Ti, which features GPU clock speed of 1000 MHz, and 6144 MB of GDDR5 RAM running at 1750 MHz through a 384-bit bus. It also features 2816 SPUs, 176 TAUs, and 96 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB		110 Watts
GeForce GTX 980 Ti		250 Watts
	Difference: 140 Watts (127%)

Memory Bandwidth

The GeForce GTX 980 Ti, in theory, should be quite a bit faster than the GeForce GTX 650 Ti 2GB in general. (explain)

GeForce GTX 980 Ti		336000 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 249600 (289%)

Texel Rate

The GeForce GTX 980 Ti should be a lot (about 196%) better at texture filtering than the GeForce GTX 650 Ti 2GB. (explain)

GeForce GTX 980 Ti		176000 Mtexels/sec
GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
	Difference: 116608 (196%)

Pixel Rate

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

GeForce GTX 980 Ti		96000 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 81152 (547%)

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 (counted in megabytes per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 processed in one second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount 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 number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.