GeForce GT 340 1GB vs GeForce GTX 275

Intro

Compare those specs to the GeForce GTX 275, which comes with a clock speed of 633 MHz and a GDDR3 memory speed of 1134 MHz. It also features a 448-bit bus, and makes use of a 55 nm design. It features 240 SPUs, 80 Texture Address Units, and 28 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
GeForce GTX 275		219 Watts
	Difference: 150 Watts (217%)

Memory Bandwidth

In theory, the GeForce GTX 275 should be much faster than the GeForce GT 340 1GB overall. (explain)

GeForce GTX 275		127008 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 72608 (133%)

Texel Rate

The GeForce GTX 275 will be a lot (about 188%) better at anisotropic filtering than the GeForce GT 340 1GB. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 33040 (188%)

Pixel Rate

The GeForce GTX 275 should be quite a bit (approximately 303%) more effective at full screen anti-aliasing than the GeForce GT 340 1GB, and will be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 275		17724 Mpixels/sec
GeForce GT 340 1GB		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 transported past the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 again. If 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.