GeForce 9800 GTX vs GeForce GT 450 (OEM)

Intro

Compare all of that to the GeForce GT 450 (OEM), which has a core clock frequency of 790 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 192-bit memory bus, and uses a 40 nm design. It is made up of 144 SPUs, 24 Texture Address Units, 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

In theory, the GeForce GT 450 (OEM) should perform a lot faster than the GeForce 9800 GTX overall. (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%) more effective at texture filtering 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 a high screen resolution is important to you, then the GeForce GT 450 (OEM) is a better choice, by far. (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 (counted in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 applied per second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video 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 amount of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate 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 outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.