GeForce 9800 GTX vs GeForce GT 450 (OEM)

Intro

Compare all that to the GeForce GT 450 (OEM), which features core 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 Texture Address Units and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
GeForce 9800 GTX		140 Watts
	Difference: 34 Watts (32%)

Memory Bandwidth

As far as performance goes, the GeForce GT 450 (OEM) should in theory be quite a bit better than the GeForce 9800 GTX in general. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce 9800 GTX		70400 MB/sec
	Difference: 25600 (36%)

Texel Rate

The GeForce 9800 GTX will be much (approximately 128%) faster with regards to AF than the GeForce GT 450 (OEM). (explain)

GeForce 9800 GTX		43200 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 24240 (128%)

Pixel Rate

The GeForce GT 450 (OEM) is a lot (approximately 76%) better at FSAA than the GeForce 9800 GTX, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce 9800 GTX		10800 Mpixels/sec
	Difference: 8160 (76%)

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 maximum amount of data (counted in megabytes per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.