GeForce 830M vs GeForce GT 340 1GB

Intro

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

Display Graphs

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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

Theoretically speaking, the GeForce GT 340 1GB should be 278% quicker than the GeForce 830M overall, because of its higher data rate. (explain)

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

Texel Rate

The GeForce GT 340 1GB should be a bit (approximately 7%) faster with regards to texture 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, and very much so. (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 maximum amount of information (counted in megabytes per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's 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 texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units of the card by the core 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 most pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.