GeForce GTX 285 1GB vs GeForce GTX 780 Ti

Intro

Compare all of that to the GeForce GTX 780 Ti, which uses a 28 nm design. nVidia has set the core frequency at 875 MHz. The GDDR5 RAM works at a speed of 1750 MHz on this particular model. It features 2880 SPUs as well as 240 Texture Address Units and 48 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 285 1GB		204 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 46 Watts (23%)

Memory Bandwidth

The GeForce GTX 780 Ti should in theory perform quite a bit faster than the GeForce GTX 285 1GB in general. (explain)

GeForce GTX 780 Ti		336000 MB/sec
GeForce GTX 285 1GB		158976 MB/sec
	Difference: 177024 (111%)

Texel Rate

The GeForce GTX 780 Ti is quite a bit (approximately 305%) more effective at anisotropic filtering than the GeForce GTX 285 1GB. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
GeForce GTX 285 1GB		51840 Mtexels/sec
	Difference: 158160 (305%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 780 Ti is superior to the GeForce GTX 285 1GB, by a large margin. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
GeForce GTX 285 1GB		20736 Mpixels/sec
	Difference: 21264 (103%)

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 data (counted in MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better 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 number of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.