GeForce GT 230 vs GeForce GT 450 (OEM)

Intro

Compare all of that to the GeForce GT 450 (OEM), which uses a 40 nm design. nVidia has clocked the core speed at 790 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this particular model. It features 144 SPUs as well as 24 TAUs and 24 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

As far as performance goes, the GeForce GT 450 (OEM) should theoretically be much superior to the GeForce GT 230 overall. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce GT 230		38400 MB/sec
	Difference: 57600 (150%)

Texel Rate

The GeForce GT 450 (OEM) will be a lot (about 115%) more effective at anisotropic filtering than the GeForce GT 230. (explain)

GeForce GT 450 (OEM)		18960 Mtexels/sec
GeForce GT 230		8800 Mtexels/sec
	Difference: 10160 (115%)

Pixel Rate

The GeForce GT 450 (OEM) will be a lot (approximately 331%) more effective at AA than the GeForce GT 230, and also should be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce GT 230		4400 Mpixels/sec
	Difference: 14560 (331%)

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 (in units of megabytes per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at 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 the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.