GeForce GT 230 vs GeForce GT 340

Intro

Compare those specifications to the GeForce GT 340, which has clock speeds of 550 MHz on the GPU, and 850 MHz on the 512 MB of GDDR5 memory. It features 96 SPUs as well as 32 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 230		65 Watts
GeForce GT 340		69 Watts
	Difference: 4 Watts (6%)

Memory Bandwidth

The GeForce GT 340 should theoretically be quite a bit faster than the GeForce GT 230 overall. (explain)

GeForce GT 340		54400 MB/sec
GeForce GT 230		38400 MB/sec
	Difference: 16000 (42%)

Texel Rate

The GeForce GT 340 should be much (about 100%) more effective at anisotropic filtering than the GeForce GT 230. (explain)

GeForce GT 340		17600 Mtexels/sec
GeForce GT 230		8800 Mtexels/sec
	Difference: 8800 (100%)

Pixel Rate

Both cards have exactly the same pixel fill rate, so in theory they should be equally good at at FSAA, and be capable of handling the same resolutions. (explain)

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 (measured in megabytes per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 amount of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the card's 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 output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.