GeForce GT 340 1GB vs GeForce GTX 980

Intro

Compare those specs to the GeForce GTX 980, which features GPU clock speed of 1126 MHz, and 4096 MB of GDDR5 RAM running at 1750 MHz through a 256-bit bus. It also is made up of 2048 Stream Processors, 128 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
GeForce GTX 980		165 Watts
	Difference: 96 Watts (139%)

Memory Bandwidth

Performance-wise, the GeForce GTX 980 should in theory be much superior to the GeForce GT 340 1GB in general. (explain)

GeForce GTX 980		224000 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 169600 (312%)

Texel Rate

The GeForce GTX 980 should be quite a bit (about 719%) faster with regards to texture filtering than the GeForce GT 340 1GB. (explain)

GeForce GTX 980		144128 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 126528 (719%)

Pixel Rate

The GeForce GTX 980 is much (more or less 1538%) better at FSAA than the GeForce GT 340 1GB, and also capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 980		72064 Mpixels/sec
GeForce GT 340 1GB		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 maximum amount of information (counted in MB per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total amount of texture units of the card 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 applied per second.

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