GeForce GTX 580 vs GeForce GTX 650 Ti 2GB

Intro

Compare those specifications to the GeForce GTX 650 Ti 2GB, which has core speeds of 928 MHz on the GPU, and 1350 MHz on the 2048 MB of GDDR5 memory. It features 768 SPUs along with 64 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB		110 Watts
GeForce GTX 580		244 Watts
	Difference: 134 Watts (122%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 580 should perform a lot faster than the GeForce GTX 650 Ti 2GB in general. (explain)

GeForce GTX 580		192384 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 105984 (123%)

Texel Rate

The GeForce GTX 650 Ti 2GB will be a little bit (about 20%) more effective at AF than the GeForce GTX 580. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
GeForce GTX 580		49408 Mtexels/sec
	Difference: 9984 (20%)

Pixel Rate

The GeForce GTX 580 will be much (about 150%) faster with regards to AA than the GeForce GTX 650 Ti 2GB, and also should be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 580		37056 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 22208 (150%)

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 data (measured in MB per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's 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 amount of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, 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 amount of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units 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 quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.