GeForce GT 340 1GB vs GeForce GTX 480

Intro

Compare those specs to the GeForce GTX 480, which has a core clock speed of 700 MHz and a GDDR5 memory speed of 924 MHz. It also features a 384-bit memory bus, and makes use of a 40 nm design. It is comprised of 480 SPUs, 60 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 480		250 Watts
	Difference: 181 Watts (262%)

Memory Bandwidth

In theory, the GeForce GTX 480 is 226% faster than the GeForce GT 340 1GB in general, due to its greater data rate. (explain)

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

Texel Rate

The GeForce GTX 480 is much (more or less 139%) faster with regards to texture 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 is a lot (approximately 664%) more effective at anti-aliasing than the GeForce GT 340 1GB, and will be capable of handling higher 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 largest amount of information (counted in MB per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units by the core clock 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 processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.