GeForce 830M vs GeForce GT 340 1GB

Intro

Compare all of that to the GeForce GT 340 1GB, which features a core clock frequency of 550 MHz and a GDDR5 memory frequency of 850 MHz. It also uses a 128-bit memory bus, and makes use of a 40 nm design. It is made up of 96 SPUs, 32 TAUs, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce GT 340 1GB		69 Watts
	Difference: 44 Watts (176%)

Memory Bandwidth

As far as performance goes, the GeForce GT 340 1GB should in theory be quite a bit superior to the GeForce 830M overall. (explain)

GeForce GT 340 1GB		54400 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 40000 (278%)

Texel Rate

The GeForce GT 340 1GB is a small bit (approximately 7%) faster with regards to anisotropic filtering than the GeForce 830M. (explain)

GeForce GT 340 1GB		17600 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 1136 (7%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce 830M is superior to the GeForce GT 340 1GB, by a large margin. (explain)

GeForce 830M		8232 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 3832 (87%)

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 (measured in MB per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 once 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 amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the 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 the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock 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 fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.