GeForce GT 340 vs GeForce GTX 980

Intro

Compare all that to the GeForce GTX 980, which features clock speeds of 1126 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs along with 128 Texture Address Units and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
GeForce GTX 980		165 Watts
	Difference: 96 Watts (139%)

Memory Bandwidth

The GeForce GTX 980 should theoretically perform quite a bit faster than the GeForce GT 340 in general. (explain)

GeForce GTX 980		224000 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 169600 (312%)

Texel Rate

The GeForce GTX 980 should be quite a bit (approximately 719%) faster with regards to anisotropic filtering than the GeForce GT 340. (explain)

GeForce GTX 980		144128 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 126528 (719%)

Pixel Rate

The GeForce GTX 980 will be a lot (about 1538%) more effective at FSAA than the GeForce GT 340, and should be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 980		72064 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 67664 (1538%)

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 max amount of information (counted in MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.