GeForce GT 340 vs Geforce GTX 690

Intro

Compare all that to the Geforce GTX 690, which makes use of a 28 nm design. nVidia has set the core frequency at 915 MHz. The GDDR5 memory works at a speed of 1502 MHz on this model. It features 1536 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
Geforce GTX 690		300 Watts
	Difference: 231 Watts (335%)

Memory Bandwidth

The Geforce GTX 690 should in theory be much faster than the GeForce GT 340 overall. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 330112 (607%)

Texel Rate

The Geforce GTX 690 is quite a bit (approximately 1231%) faster with regards to anisotropic filtering than the GeForce GT 340. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 216640 (1231%)

Pixel Rate

If running with a high screen resolution is important to you, then the Geforce GTX 690 is superior to the GeForce GT 340, by far. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 54160 (1231%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

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 bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 figure 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record 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 fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.