GeForce GT 450 (OEM) vs GeForce GTX 275

Intro

Compare all that to the GeForce GTX 275, which comes with a GPU core clock speed of 633 MHz, and 896 MB of GDDR3 RAM running at 1134 MHz through a 448-bit bus. It also is made up of 240 SPUs, 80 Texture Address Units, and 28 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
GeForce GTX 275		219 Watts
	Difference: 113 Watts (107%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 275 should theoretically be quite a bit superior to the GeForce GT 450 (OEM) in general. (explain)

GeForce GTX 275		127008 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 31008 (32%)

Texel Rate

The GeForce GTX 275 is much (approximately 167%) faster with regards to AF than the GeForce GT 450 (OEM). (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 31680 (167%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GT 450 (OEM) is the winner, but it probably won't make a huge difference. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 1236 (7%)

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 largest amount of information (in units of megabytes per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total amount of texture units by the core 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.