GeForce GTX 650 Ti 2GB vs GeForce GTX 980 Ti

Intro

Compare those specs to the GeForce GTX 980 Ti, which makes use of a 28 nm design. nVidia has set the core frequency at 1000 MHz. The GDDR5 memory is set to run at a frequency of 1750 MHz on this specific card. It features 2816 SPUs along with 176 TAUs and 96 ROPs.

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 should in theory be a lot faster than the GeForce GTX 650 Ti 2GB overall. (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 is quite a bit (approximately 196%) more effective at AF 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 using 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: Memory bandwidth is the max amount of information (counted in MB per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If it uses 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 can be processed in one second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.