GeForce GT 340 1GB vs GeForce GTX 860M

Intro

Compare all of that to the GeForce GTX 860M, which uses a 28 nm design. nVidia has set the core speed at 797 MHz. The GDDR5 memory works 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 GTX 860M		45 Watts
GeForce GT 340 1GB		69 Watts
	Difference: 24 Watts (53%)

Memory Bandwidth

Performance-wise, the GeForce GTX 860M should in theory be a small bit superior to the GeForce GT 340 1GB in general. (explain)

GeForce GTX 860M		64000 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 9600 (18%)

Texel Rate

The GeForce GTX 860M should be a lot (about 335%) more effective at texture filtering than the GeForce GT 340 1GB. (explain)

GeForce GTX 860M		76512 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 58912 (335%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 860M is superior to the GeForce GT 340 1GB, and very much so. (explain)

GeForce GTX 860M		12752 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 8352 (190%)

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 max amount of information (counted in megabytes per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.