GeForce GT 340 vs GeForce GTX 260

Intro

Compare that to the GeForce GTX 260, which has a clock speed of 576 MHz and a GDDR3 memory frequency of 999 MHz. It also features a 448-bit memory bus, and uses a 65 nm design. It features 192 SPUs, 64 Texture Address Units, and 28 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
GeForce GTX 260		182 Watts
	Difference: 113 Watts (164%)

Memory Bandwidth

In theory, the GeForce GTX 260 is 106% quicker than the GeForce GT 340 overall, because of its higher data rate. (explain)

GeForce GTX 260		111888 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 57488 (106%)

Texel Rate

The GeForce GTX 260 will be much (about 109%) faster with regards to texture filtering than the GeForce GT 340. (explain)

GeForce GTX 260		36864 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 19264 (109%)

Pixel Rate

The GeForce GTX 260 will be much (about 267%) faster with regards to AA than the GeForce GT 340, and also should be capable of handling higher screen resolutions better. (explain)

GeForce GTX 260		16128 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 11728 (267%)

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 max amount of information (measured in megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 processed per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.