GeForce 9800 GT 1GB vs GeForce GTS 450 1GB

Intro

Compare that to the GeForce GTS 450 1GB, which has a GPU core clock speed of 783 MHz, and 1024 MB of GDDR5 memory set to run at 902 MHz through a 128-bit bus. It also is comprised of 192 SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GT 1GB		105 Watts
GeForce GTS 450 1GB		106 Watts
	Difference: 1 Watts (1%)

Memory Bandwidth

The GeForce GTS 450 1GB should theoretically perform a little bit faster than the GeForce 9800 GT 1GB in general. (explain)

GeForce GTS 450 1GB		57728 MB/sec
GeForce 9800 GT 1GB		57600 MB/sec
	Difference: 128 (0%)

Texel Rate

The GeForce 9800 GT 1GB will be quite a bit (approximately 34%) more effective at anisotropic filtering than the GeForce GTS 450 1GB. (explain)

GeForce 9800 GT 1GB		33600 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 8544 (34%)

Pixel Rate

The GeForce GTS 450 1GB will be a lot (approximately 31%) more effective at FSAA than the GeForce 9800 GT 1GB, and also should be able to handle higher screen resolutions more effectively. (explain)

GeForce GTS 450 1GB		12528 Mpixels/sec
GeForce 9800 GT 1GB		9600 Mpixels/sec
	Difference: 2928 (31%)

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 information (counted in megabytes per second) that can be transported over the external memory interface within a second. The number is worked out by multiplying the interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 are applied in one second. This is worked out by multiplying the total number of texture units by the core 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 applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.