GeForce GTX 650 Ti 2GB vs Geforce GTX 680

Intro

Compare that to the Geforce GTX 680, which comes with a GPU core clock speed of 1006 MHz, and 2048 MB of GDDR5 RAM set to run at 1502 MHz through a 256-bit bus. It also features 1536 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB		110 Watts
Geforce GTX 680		195 Watts
	Difference: 85 Watts (77%)

Memory Bandwidth

Performance-wise, the Geforce GTX 680 should theoretically be a lot better than the GeForce GTX 650 Ti 2GB overall. (explain)

Geforce GTX 680		192256 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 105856 (123%)

Texel Rate

The Geforce GTX 680 will be quite a bit (about 117%) faster with regards to texture filtering than the GeForce GTX 650 Ti 2GB. (explain)

Geforce GTX 680		128768 Mtexels/sec
GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
	Difference: 69376 (117%)

Pixel Rate

If running with a high resolution is important to you, then the Geforce GTX 680 is superior to the GeForce GTX 650 Ti 2GB, by far. (explain)

Geforce GTX 680		32192 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 17344 (117%)

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 megabytes per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the graphics 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 that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.