GeForce 8800 Ultra vs GeForce GT 450 (OEM)

Intro

Compare all of that to the GeForce GT 450 (OEM), which has clock speeds of 790 MHz on the GPU, and 1000 MHz on the 1536 MB of GDDR5 RAM. It features 144 SPUs as well as 24 TAUs and 24 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
GeForce 8800 Ultra		171 Watts
	Difference: 65 Watts (61%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 Ultra is 8% quicker than the GeForce GT 450 (OEM) in general, due to its higher bandwidth. (explain)

GeForce 8800 Ultra		103680 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 7680 (8%)

Texel Rate

The GeForce 8800 Ultra will be quite a bit (about 107%) better at texture filtering than the GeForce GT 450 (OEM). (explain)

GeForce 8800 Ultra		39168 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 20208 (107%)

Pixel Rate

The GeForce GT 450 (OEM) should be much (more or less 29%) more effective at anti-aliasing than the GeForce 8800 Ultra, and able to handle higher screen resolutions more effectively. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce 8800 Ultra		14688 Mpixels/sec
	Difference: 4272 (29%)

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 largest amount of data (measured in MB per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. 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 number of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the video 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 that the graphics card can possibly write to the 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 clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.