GeForce 8800 GT 1GB vs GeForce 9800 GTX+

Intro

Compare those specifications to the GeForce 9800 GTX+, which uses a 55 nm design. nVidia has clocked the core frequency at 738 MHz. The GDDR3 memory works at a frequency of 1100 MHz on this specific card. It features 128 SPUs along with 64 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 1GB		105 Watts
GeForce 9800 GTX+		145 Watts
	Difference: 40 Watts (38%)

Memory Bandwidth

As far as performance goes, the GeForce 9800 GTX+ should theoretically be much better than the GeForce 8800 GT 1GB in general. (explain)

GeForce 9800 GTX+		70400 MB/sec
GeForce 8800 GT 1GB		57600 MB/sec
	Difference: 12800 (22%)

Texel Rate

The GeForce 9800 GTX+ will be much (more or less 41%) better at anisotropic filtering than the GeForce 8800 GT 1GB. (explain)

GeForce 9800 GTX+		47232 Mtexels/sec
GeForce 8800 GT 1GB		33600 Mtexels/sec
	Difference: 13632 (41%)

Pixel Rate

The GeForce 9800 GTX+ will be quite a bit (approximately 23%) faster with regards to AA than the GeForce 8800 GT 1GB, and also capable of handling higher screen resolutions better. (explain)

GeForce 9800 GTX+		11808 Mpixels/sec
GeForce 8800 GT 1GB		9600 Mpixels/sec
	Difference: 2208 (23%)

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 information (measured in MB per second) that can be transported over the external memory interface within a second. The number is calculated by multiplying the card's 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 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 processed in one second. This is worked out by multiplying the total amount of texture units 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 applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics 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 amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.