GeForce GT 340 vs GeForce GTX 275

Intro

Compare all of that to the GeForce GTX 275, which has GPU clock speed of 633 MHz, and 896 MB of GDDR3 memory set to run at 1134 MHz through a 448-bit bus. It also is comprised of 240 Stream Processors, 80 Texture Address Units, and 28 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
GeForce GTX 275		219 Watts
	Difference: 150 Watts (217%)

Memory Bandwidth

The GeForce GTX 275 should theoretically be a lot faster than the GeForce GT 340 overall. (explain)

GeForce GTX 275		127008 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 72608 (133%)

Texel Rate

The GeForce GTX 275 will be a lot (more or less 188%) faster with regards to texture filtering than the GeForce GT 340. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 33040 (188%)

Pixel Rate

The GeForce GTX 275 should be a lot (about 303%) more effective at FSAA than the GeForce GT 340, and also will be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 275		17724 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 13324 (303%)

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 maximum amount of information (in units of megabytes per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, 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 most pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated 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 filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.