GeForce GT 340 1GB vs Geforce GTX 780

Intro

Compare those specs to the Geforce GTX 780, which features a GPU core clock speed of 863 MHz, and 3072 MB of GDDR5 RAM running at 1502 MHz through a 384-bit bus. It also features 2304 Stream Processors, 192 TAUs, and 48 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
Geforce GTX 780		250 Watts
	Difference: 181 Watts (262%)

Memory Bandwidth

Performance-wise, the Geforce GTX 780 should in theory be quite a bit superior to the GeForce GT 340 1GB in general. (explain)

Geforce GTX 780		288384 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 233984 (430%)

Texel Rate

The Geforce GTX 780 is a lot (approximately 841%) faster with regards to texture filtering than the GeForce GT 340 1GB. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 148096 (841%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Geforce GTX 780 is a better choice, and very much so. (explain)

Geforce GTX 780		41424 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 37024 (841%)

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 largest amount of data (counted in MB per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, 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 maximum number of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines 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 rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.