GeForce GT 340 1GB vs GeForce GTX 860M

Intro

Compare those specifications to the GeForce GTX 860M, which comes with GPU clock speed of 797 MHz, and 4096 MB of GDDR5 memory set to run at 1000 MHz through a 128-bit bus. It also features 1152 Stream Processors, 96 TAUs, and 16 ROPs.

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

Theoretically speaking, the GeForce GTX 860M should be 18% quicker than the GeForce GT 340 1GB overall, due to its greater bandwidth. (explain)

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

Texel Rate

The GeForce GTX 860M will be quite a bit (approximately 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 lots of anti-aliasing is important to you, then the GeForce GTX 860M is superior to the GeForce GT 340 1GB, by a large margin. (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 maximum amount of information (counted in megabytes per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video 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 amount of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.