GeForce GTX 580 3GB vs GeForce GTX Titan

Intro

Compare all that to the GeForce GTX Titan, which makes use of a 28 nm design. nVidia has clocked the core frequency at 837 MHz. The GDDR5 memory is set to run at a speed of 1502 MHz on this model. It features 2688 SPUs as well as 224 TAUs and 48 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 580 3GB		244 Watts
GeForce GTX Titan		250 Watts
	Difference: 6 Watts (2%)

Memory Bandwidth

In theory, the GeForce GTX Titan will be 50% quicker than the GeForce GTX 580 3GB in general, because of its greater data rate. (explain)

GeForce GTX Titan		288384 MB/sec
GeForce GTX 580 3GB		192384 MB/sec
	Difference: 96000 (50%)

Texel Rate

The GeForce GTX Titan will be a lot (approximately 279%) more effective at AF than the GeForce GTX 580 3GB. (explain)

GeForce GTX Titan		187488 Mtexels/sec
GeForce GTX 580 3GB		49408 Mtexels/sec
	Difference: 138080 (279%)

Pixel Rate

The GeForce GTX Titan is a little bit (approximately 8%) faster with regards to full screen anti-aliasing than the GeForce GTX 580 3GB, and also should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX Titan		40176 Mpixels/sec
GeForce GTX 580 3GB		37056 Mpixels/sec
	Difference: 3120 (8%)

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 (in units of megabytes per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range 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 figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called 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 memory bandwidth is, the lower the potential to reach the maximum fill rate.