GeForce GTX 285 1GB vs Geforce GTX 770

Intro

Compare all of that to the Geforce GTX 770, which has GPU core speed of 1046 MHz, and 2048 MB of GDDR5 memory set to run at 1753 MHz through a 256-bit bus. It also is made up of 1536 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 285 1GB		204 Watts
Geforce GTX 770		230 Watts
	Difference: 26 Watts (13%)

Memory Bandwidth

As far as performance goes, the Geforce GTX 770 should in theory be much better than the GeForce GTX 285 1GB in general. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GTX 285 1GB		158976 MB/sec
	Difference: 65408 (41%)

Texel Rate

The Geforce GTX 770 should be quite a bit (more or less 158%) faster with regards to texture filtering than the GeForce GTX 285 1GB. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GTX 285 1GB		51840 Mtexels/sec
	Difference: 82048 (158%)

Pixel Rate

If running with a high screen resolution is important to you, then the Geforce GTX 770 is superior to the GeForce GTX 285 1GB, and very much so. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GTX 285 1GB		20736 Mpixels/sec
	Difference: 12736 (61%)

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 largest amount of information (in units of MB per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR memory, 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 high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is calculated by multiplying the total number of texture units by the core clock 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.