GeForce 8800 GTX vs GeForce 9800 GTX+

Intro

Compare all of that to the GeForce 9800 GTX+, which features a GPU core clock speed of 738 MHz, and 512 MB of GDDR3 RAM running at 1100 MHz through a 256-bit bus. It also is made up of 128 Stream Processors, 64 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GTX+		145 Watts
GeForce 8800 GTX		155 Watts
	Difference: 10 Watts (7%)

Memory Bandwidth

Performance-wise, the GeForce 8800 GTX should in theory be much superior to the GeForce 9800 GTX+ overall. (explain)

GeForce 8800 GTX		86400 MB/sec
GeForce 9800 GTX+		70400 MB/sec
	Difference: 16000 (23%)

Texel Rate

The GeForce 9800 GTX+ will be a lot (approximately 28%) faster with regards to texture filtering than the GeForce 8800 GTX. (explain)

GeForce 9800 GTX+		47232 Mtexels/sec
GeForce 8800 GTX		36800 Mtexels/sec
	Difference: 10432 (28%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce 8800 GTX is the winner, though only just barely. (explain)

GeForce 8800 GTX		13800 Mpixels/sec
GeForce 9800 GTX+		11808 Mpixels/sec
	Difference: 1992 (17%)

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 (in units of megabytes per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill 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 ability to get to the max fill rate.