GeForce GT 320 vs Geforce GTX 780

Intro

Compare those specifications to the Geforce GTX 780, which has GPU clock speed of 863 MHz, and 3072 MB of GDDR5 RAM set to run at 1502 MHz through a 384-bit bus. It also features 2304 SPUs, 192 TAUs, and 48 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
Geforce GTX 780		250 Watts
	Difference: 207 Watts (481%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 780 should be a lot faster than the GeForce GT 320 overall. (explain)

Geforce GTX 780		288384 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 263104 (1041%)

Texel Rate

The Geforce GTX 780 is much (more or less 1179%) faster with regards to AF than the GeForce GT 320. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 152736 (1179%)

Pixel Rate

The Geforce GTX 780 should be quite a bit (about 859%) faster with regards to FSAA than the GeForce GT 320, and also will be capable of handling higher screen resolutions while still performing well. (explain)

Geforce GTX 780		41424 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 37104 (859%)

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 (measured in MB per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 number of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

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