GeForce GT 310 vs GeForce GT 340

Intro

Compare all that to the GeForce GT 340, which comes with a core clock frequency of 550 MHz and a GDDR5 memory frequency of 850 MHz. It also features a 128-bit bus, and uses a 40 nm design. It is comprised of 96 SPUs, 32 Texture Address Units, 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

Performance-wise, the GeForce GT 340 should in theory be quite a bit better than the GeForce GT 310 in general. (explain)

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

Texel Rate

The GeForce GT 340 will be quite a bit (about 274%) better at anisotropic filtering than the GeForce GT 310. (explain)

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

Pixel Rate

If running with a high resolution is important to you, then the GeForce GT 340 is the winner, and very much so. (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: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transported past the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units of the card 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 card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.