GeForce GTX 285 2GB vs Geforce GTX 770

Intro

Compare all of that to the Geforce GTX 770, which has a clock frequency of 1046 MHz and a GDDR5 memory frequency of 1753 MHz. It also features a 256-bit bus, and makes use of a 28 nm design. It features 1536 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 285 2GB		204 Watts
Geforce GTX 770		230 Watts
	Difference: 26 Watts (13%)

Memory Bandwidth

In theory, the Geforce GTX 770 will be 41% faster than the GeForce GTX 285 2GB overall, because of its greater data rate. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GTX 285 2GB		158976 MB/sec
	Difference: 65408 (41%)

Texel Rate

The Geforce GTX 770 is a lot (about 158%) faster with regards to AF than the GeForce GTX 285 2GB. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GTX 285 2GB		51840 Mtexels/sec
	Difference: 82048 (158%)

Pixel Rate

If using a high screen resolution is important to you, then the Geforce GTX 770 is a better choice, by far. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GTX 285 2GB		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 maximum amount of information (measured in MB per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the 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 texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many 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.