GeForce 8800 Ultra vs GeForce GT 450 (OEM)

Intro

Compare that to the GeForce GT 450 (OEM), which uses a 40 nm design. nVidia has clocked the core frequency at 790 MHz. The GDDR5 RAM runs at a speed of 1000 MHz on this model. It features 144 SPUs along with 24 Texture Address Units and 24 ROPs.

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

The GeForce 8800 Ultra should theoretically be just a bit faster than the GeForce GT 450 (OEM) in general. (explain)

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

Texel Rate

The GeForce 8800 Ultra is much (approximately 107%) more effective at anisotropic 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

If running with lots of anti-aliasing is important to you, then the GeForce GT 450 (OEM) is superior to the GeForce 8800 Ultra, and very much so. (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: Memory bandwidth is the max amount of data (measured in MB per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can 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 Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.