GeForce GT 340 1GB vs GeForce GTX 480

Intro

Compare those specs to the GeForce GTX 480, which comes with a clock speed of 700 MHz and a GDDR5 memory speed of 924 MHz. It also uses a 384-bit bus, and uses a 40 nm design. It features 480 SPUs, 60 Texture Address Units, and 48 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
GeForce GTX 480		250 Watts
	Difference: 181 Watts (262%)

Memory Bandwidth

Performance-wise, the GeForce GTX 480 should theoretically be a lot superior to the GeForce GT 340 1GB in general. (explain)

GeForce GTX 480		177408 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 123008 (226%)

Texel Rate

The GeForce GTX 480 is quite a bit (more or less 139%) faster with regards to anisotropic filtering than the GeForce GT 340 1GB. (explain)

GeForce GTX 480		42000 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 24400 (139%)

Pixel Rate

The GeForce GTX 480 will be much (about 664%) more effective at full screen anti-aliasing than the GeForce GT 340 1GB, and also will be able to handle higher screen resolutions better. (explain)

GeForce GTX 480		33600 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 29200 (664%)

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 (measured in MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 once again. If 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, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.