GeForce GT 340 1GB vs GeForce GTX 470

Intro

Compare those specifications to the GeForce GTX 470, which comes with GPU core speed of 607 MHz, and 1280 MB of GDDR5 memory running at 837 MHz through a 320-bit bus. It also is comprised of 448 Stream Processors, 56 TAUs, and 40 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
GeForce GTX 470		215 Watts
	Difference: 146 Watts (212%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 470 is 146% quicker than the GeForce GT 340 1GB in general, because of its greater bandwidth. (explain)

GeForce GTX 470		133920 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 79520 (146%)

Texel Rate

The GeForce GTX 470 is a lot (approximately 93%) faster with regards to anisotropic filtering than the GeForce GT 340 1GB. (explain)

GeForce GTX 470		33992 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 16392 (93%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 470 is a better choice, by a large margin. (explain)

GeForce GTX 470		24280 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 19880 (452%)

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 max amount of data (in units of MB per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics 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 the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few 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.