GeForce GT 340 1GB vs Geforce GTX 770

Intro

Compare those specifications to the Geforce GTX 770, which has a core clock speed of 1046 MHz and a GDDR5 memory speed of 1753 MHz. It also features a 256-bit bus, and makes use of a 28 nm design. It is comprised of 1536 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
Geforce GTX 770		230 Watts
	Difference: 161 Watts (233%)

Memory Bandwidth

Theoretically, the Geforce GTX 770 should perform much faster than the GeForce GT 340 1GB in general. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 169984 (312%)

Texel Rate

The Geforce GTX 770 is quite a bit (approximately 661%) faster with regards to texture filtering than the GeForce GT 340 1GB. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 116288 (661%)

Pixel Rate

The Geforce GTX 770 should be much (approximately 661%) better at anti-aliasing than the GeForce GT 340 1GB, and capable of handling higher screen resolutions without slowing down too much. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 29072 (661%)

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 largest amount of information (in units of megabytes per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the 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 most pixels the video card can 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 colour ROPs by the the card's clock speed. 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 quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.