GeForce 9800 GTX vs GeForce GT 450 (OEM)

Intro

Compare those specs to the GeForce GT 450 (OEM), which comes with a GPU core clock speed of 790 MHz, and 1536 MB of GDDR5 RAM running at 1000 MHz through a 192-bit bus. It also is made up of 144 Stream Processors, 24 TAUs, and 24 Raster Operation Units.

Display Graphs

Hide Graphs

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

The GeForce GT 450 (OEM) should theoretically perform much faster 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 quite a bit (more or less 128%) better at 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

If running with high levels of AA is important to you, then the GeForce GT 450 (OEM) is a better choice, by a large margin. (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: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka 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 ability to get to the max fill rate.