GeForce GT 340 1GB vs GeForce GTX 465

Intro

Compare that to the GeForce GTX 465, which comes with a GPU core clock speed of 607 MHz, and 1024 MB of GDDR5 memory running at 802 MHz through a 256-bit bus. It also features 352 SPUs, 44 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
GeForce GTX 465		200 Watts
	Difference: 131 Watts (190%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 465 will be 89% quicker than the GeForce GT 340 1GB in general, due to its higher bandwidth. (explain)

GeForce GTX 465		102592 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 48192 (89%)

Texel Rate

The GeForce GTX 465 should be much (more or less 52%) faster with regards to anisotropic filtering than the GeForce GT 340 1GB. (explain)

GeForce GTX 465		26708 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 9108 (52%)

Pixel Rate

The GeForce GTX 465 should be much (about 341%) faster with regards to FSAA than the GeForce GT 340 1GB, and will be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 465		19424 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 15024 (341%)

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: Bandwidth is the maximum amount of information (measured in MB per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better 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 amount of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total number of texture units 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 processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel 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 potential to reach the max fill rate.