GeForce GT 340 vs GeForce GTX 275

Intro

Compare all that to the GeForce GTX 275, which features a clock speed of 633 MHz and a GDDR3 memory frequency of 1134 MHz. It also makes use of a 448-bit bus, and uses a 55 nm design. It is made up of 240 SPUs, 80 TAUs, and 28 Raster Operation Units.

Display Graphs

Hide Graphs

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

Performance-wise, the GeForce GTX 275 should theoretically be a lot superior to 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 much (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 quite a bit (about 303%) more effective at FSAA than the GeForce GT 340, and also capable of handling higher resolutions more effectively. (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 maximum amount of information (in units of megabytes per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 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 high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, 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 maximum number of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.