GeForce GTX 650 Ti 2GB vs GeForce GTX 980

Intro

Compare that to the GeForce GTX 980, which has a core clock frequency of 1126 MHz and a GDDR5 memory frequency of 1750 MHz. It also features a 256-bit bus, and makes use of a 28 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 64 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		165 Watts
	Difference: 55 Watts (50%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 980 should perform much faster than the GeForce GTX 650 Ti 2GB in general. (explain)

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

Texel Rate

The GeForce GTX 980 will be much (approximately 143%) more effective at 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

The GeForce GTX 980 is much (more or less 385%) more effective at FSAA than the GeForce GTX 650 Ti 2GB, and also able to handle higher screen resolutions without slowing down too much. (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: Bandwidth is the max amount of information (measured in megabytes per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses 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 texture map elements (texels) that can be applied per second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the card's clock speed. 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 is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.