GeForce GT 340 1GB vs GeForce GTX 470

Intro

Compare all that to the GeForce GTX 470, which features a clock frequency of 607 MHz and a GDDR5 memory frequency of 837 MHz. It also makes use of a 320-bit bus, and makes use of a 40 nm design. It is made up of 448 SPUs, 56 Texture Address Units, 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

In theory, the GeForce GTX 470 should perform much faster than the GeForce GT 340 1GB in general. (explain)

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

Texel Rate

The GeForce GTX 470 is much (approximately 93%) more effective at texture 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

The GeForce GTX 470 should be quite a bit (approximately 452%) more effective at AA than the GeForce GT 340 1GB, and also will be able to handle higher resolutions more effectively. (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 largest amount of information (measured in MB per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.