GeForce GT 230 vs GeForce GTS 450

Intro

Compare all of that to the GeForce GTS 450, which has core speeds of 783 MHz on the GPU, and 902 MHz on the 512 MB of GDDR5 RAM. It features 192 SPUs along with 32 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 230		65 Watts
GeForce GTS 450		106 Watts
	Difference: 41 Watts (63%)

Memory Bandwidth

Performance-wise, the GeForce GTS 450 should in theory be quite a bit superior to the GeForce GT 230 overall. (explain)

GeForce GTS 450		57728 MB/sec
GeForce GT 230		38400 MB/sec
	Difference: 19328 (50%)

Texel Rate

The GeForce GTS 450 is quite a bit (approximately 185%) faster with regards to texture filtering than the GeForce GT 230. (explain)

GeForce GTS 450		25056 Mtexels/sec
GeForce GT 230		8800 Mtexels/sec
	Difference: 16256 (185%)

Pixel Rate

The GeForce GTS 450 is quite a bit (approximately 185%) faster with regards to AA than the GeForce GT 230, and will be able to handle higher screen resolutions more effectively. (explain)

GeForce GTS 450		12528 Mpixels/sec
GeForce GT 230		4400 Mpixels/sec
	Difference: 8128 (185%)

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 data (counted in megabytes per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.