GeForce GT 310 vs GeForce GT 340

Intro

Compare those specs to the GeForce GT 340, which has a clock speed of 550 MHz and a GDDR5 memory frequency of 850 MHz. It also features a 128-bit bus, and makes use of a 40 nm design. It features 96 SPUs, 32 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 310		31 Watts
GeForce GT 340		69 Watts
	Difference: 38 Watts (123%)

Memory Bandwidth

As far as performance goes, the GeForce GT 340 should theoretically be quite a bit superior to the GeForce GT 310 overall. (explain)

GeForce GT 340		54400 MB/sec
GeForce GT 310		16000 MB/sec
	Difference: 38400 (240%)

Texel Rate

The GeForce GT 340 will be much (about 274%) faster with regards to texture filtering than the GeForce GT 310. (explain)

GeForce GT 340		17600 Mtexels/sec
GeForce GT 310		4712 Mtexels/sec
	Difference: 12888 (274%)

Pixel Rate

The GeForce GT 340 should be quite a bit (more or less 87%) better at FSAA than the GeForce GT 310, and should be capable of handling higher screen resolutions more effectively. (explain)

GeForce GT 340		4400 Mpixels/sec
GeForce GT 310		2356 Mpixels/sec
	Difference: 2044 (87%)

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 (measured in megabytes per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better 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 a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.