GeForce GT 320 vs GeForce GTX 860M

Intro

Compare those specs to the GeForce GTX 860M, which makes use of a 28 nm design. nVidia has set the core frequency at 797 MHz. The GDDR5 RAM runs at a speed of 1000 MHz on this card. It features 1152 SPUs along with 96 TAUs 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

Theoretically, the GeForce GTX 860M should perform much faster than the GeForce GT 320 overall. (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 (approximately 490%) more effective at texture 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 should be much (more or less 195%) more effective at FSAA than the GeForce GT 320, and should be capable of handling higher resolutions more effectively. (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: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better 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 in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.