GeForce GT 450 (OEM) vs GeForce GTX 275

Intro

Compare those specifications to the GeForce GTX 275, which has core speeds of 633 MHz on the GPU, and 1134 MHz on the 896 MB of GDDR3 memory. It features 240 SPUs along with 80 TAUs and 28 Rasterization Operator Units.

Display Graphs

Hide Graphs

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 in theory be much superior to the GeForce GT 450 (OEM) overall. (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 texture filtering 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 running with a high screen resolution is important to you, then the GeForce GT 450 (OEM) is the winner, but not by far. (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 maximum amount of data (measured in MB per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one 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 this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.