GeForce GT 320 vs Geforce GTX 770

Intro

Compare those specs to the Geforce GTX 770, which uses a 28 nm design. nVidia has clocked the core speed at 1046 MHz. The GDDR5 memory runs at a frequency of 1753 MHz on this specific card. It features 1536 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
Geforce GTX 770		230 Watts
	Difference: 187 Watts (435%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 770 is 788% quicker than the GeForce GT 320 in general, due to its greater data rate. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 199104 (788%)

Texel Rate

The Geforce GTX 770 should be a lot (more or less 933%) more effective at anisotropic filtering than the GeForce GT 320. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 120928 (933%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Geforce GTX 770 is a better choice, by a large margin. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 29152 (675%)

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 largest amount of data (in units of megabytes per second) that can be moved over the external memory interface in a second. The number is calculated by multiplying the interface width by its memory speed. If the card has DDR type memory, it 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 can be applied in one second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the video 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 that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the card's 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 fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.