GeForce GT 340 vs GeForce GTX 750 Ti

Intro

Compare those specs to the GeForce GTX 750 Ti, which features a GPU core clock speed of 1020 MHz, and 2048 MB of GDDR5 memory set to run at 1350 MHz through a 128-bit bus. It also is comprised of 640 Stream Processors, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 Ti		60 Watts
GeForce GT 340		69 Watts
	Difference: 9 Watts (15%)

Memory Bandwidth

The GeForce GTX 750 Ti should in theory be quite a bit faster than the GeForce GT 340 overall. (explain)

GeForce GTX 750 Ti		86400 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 32000 (59%)

Texel Rate

The GeForce GTX 750 Ti should be much (about 132%) faster with regards to anisotropic filtering than the GeForce GT 340. (explain)

GeForce GTX 750 Ti		40800 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 23200 (132%)

Pixel Rate

The GeForce GTX 750 Ti should be a lot (more or less 271%) more effective at anti-aliasing than the GeForce GT 340, and also capable of handling higher screen resolutions better. (explain)

GeForce GTX 750 Ti		16320 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 11920 (271%)

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 moved across the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses 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 applied per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the video card will be at 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 that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out 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 fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.