GeForce 8800 GT 512MB vs GeForce 9800 GTX+

Intro

Compare all that to the GeForce 9800 GTX+, which comes with clock speeds of 738 MHz on the GPU, and 1100 MHz on the 512 MB of GDDR3 memory. It features 128 SPUs as well as 64 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 512MB		105 Watts
GeForce 9800 GTX+		145 Watts
	Difference: 40 Watts (38%)

Memory Bandwidth

Theoretically speaking, the GeForce 9800 GTX+ should be 22% quicker than the GeForce 8800 GT 512MB in general, because of its greater data rate. (explain)

GeForce 9800 GTX+		70400 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 12800 (22%)

Texel Rate

The GeForce 9800 GTX+ is quite a bit (about 41%) more effective at AF than the GeForce 8800 GT 512MB. (explain)

GeForce 9800 GTX+		47232 Mtexels/sec
GeForce 8800 GT 512MB		33600 Mtexels/sec
	Difference: 13632 (41%)

Pixel Rate

The GeForce 9800 GTX+ will be a lot (about 23%) better at full screen anti-aliasing than the GeForce 8800 GT 512MB, and also able to handle higher screen resolutions without losing too much performance. (explain)

GeForce 9800 GTX+		11808 Mpixels/sec
GeForce 8800 GT 512MB		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 max amount of information (measured in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the bus width by its memory speed. In the case of 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 better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, 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 maximum number of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.