GeForce GT 320 vs GeForce GTX 860M

Intro

Compare those specifications to the GeForce GTX 860M, which uses a 28 nm design. nVidia has clocked the core speed at 797 MHz. The GDDR5 RAM is set to run at a frequency of 1000 MHz on this particular model. It features 1152 SPUs as well as 96 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTX 860M		45 Watts
	Difference: 2 Watts (5%)

Memory Bandwidth

The GeForce GTX 860M, in theory, should perform quite a bit faster than the GeForce GT 320 in general. (explain)

GeForce GTX 860M		64000 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 38720 (153%)

Texel Rate

The GeForce GTX 860M will be much (about 490%) faster with regards to anisotropic filtering than the GeForce GT 320. (explain)

GeForce GTX 860M		76512 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 63552 (490%)

Pixel Rate

The GeForce GTX 860M will be a lot (more or less 195%) better at AA than the GeForce GT 320, and will be capable of handling higher resolutions better. (explain)

GeForce GTX 860M		12752 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 8432 (195%)

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 information (counted in megabytes per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at 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 that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.