GeForce GT 340 vs GeForce GTX 980

Intro

Compare those specs to the GeForce GTX 980, which has core speeds of 1126 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs along with 128 TAUs and 64 ROPs.

Display Graphs

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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

Performance-wise, the GeForce GTX 980 should in theory be quite a bit superior to 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 is quite a bit (approximately 719%) faster with regards to AF 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 is a lot (approximately 1538%) faster with regards to FSAA than the GeForce GT 340, and also capable of handling higher resolutions without losing too much performance. (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: Memory bandwidth is the max amount of information (counted in MB per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it must 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the graphics 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 most pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.