GeForce 8800 Ultra vs GeForce GT 240 GDDR5 1GB

Intro

Compare all that to the GeForce GT 240 GDDR5 1GB, which has a GPU core clock speed of 550 MHz, and 1024 MB of GDDR5 RAM set to run at 850 MHz through a 128-bit bus. It also is made up of 96 SPUs, 32 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5 1GB		70 Watts
GeForce 8800 Ultra		171 Watts
	Difference: 101 Watts (144%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 Ultra is 91% quicker than the GeForce GT 240 GDDR5 1GB overall, due to its greater bandwidth. (explain)

GeForce 8800 Ultra		103680 MB/sec
GeForce GT 240 GDDR5 1GB		54400 MB/sec
	Difference: 49280 (91%)

Texel Rate

The GeForce 8800 Ultra will be quite a bit (approximately 123%) faster with regards to anisotropic filtering than the GeForce GT 240 GDDR5 1GB. (explain)

GeForce 8800 Ultra		39168 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 21568 (123%)

Pixel Rate

The GeForce 8800 Ultra should be much (more or less 234%) better at AA than the GeForce GT 240 GDDR5 1GB, and also able to handle higher screen resolutions better. (explain)

GeForce 8800 Ultra		14688 Mpixels/sec
GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
	Difference: 10288 (234%)

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 largest amount of data (measured in MB per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.