GeForce GT 320 vs Geforce GTX 770

Intro

Compare those specifications to the Geforce GTX 770, which comes with a core clock speed of 1046 MHz and a GDDR5 memory speed of 1753 MHz. It also makes use of a 256-bit bus, and makes use of a 28 nm design. It features 1536 SPUs, 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

In theory, the Geforce GTX 770 should be quite a bit faster than the GeForce GT 320 overall. (explain)

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

Texel Rate

The Geforce GTX 770 will be quite a bit (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

The Geforce GTX 770 should be much (approximately 675%) faster with regards to AA than the GeForce GT 320, and should be capable of handling higher resolutions better. (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 maximum amount of data (counted in megabytes per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

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