GeForce GT 340 vs GeForce GTX 275

Intro

Compare all of that to the GeForce GTX 275, which uses a 55 nm design. nVidia has set the core frequency at 633 MHz. The GDDR3 RAM runs at a frequency of 1134 MHz on this model. It features 240 SPUs as well as 80 Texture Address Units and 28 Rasterization Operator Units.

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 in theory be quite a bit 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 is a lot (more or less 188%) faster with regards to anisotropic 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 will be quite a bit (approximately 303%) faster with regards to anti-aliasing than the GeForce GT 340, and also capable of handling higher resolutions better. (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: Bandwidth is the largest amount of information (counted in MB per second) that can be transported past the external memory interface within a second. It's calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total texture units by the core 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 maximum number of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.