GeForce 8800 GTX vs GeForce GT 240 GDDR5 1GB

Intro

Compare those specifications to the GeForce GT 240 GDDR5 1GB, which uses a 40 nm design. nVidia has set the core frequency at 550 MHz. The GDDR5 memory works at a frequency of 850 MHz on this specific model. It features 96 SPUs along with 32 Texture Address Units 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 GTX		155 Watts
	Difference: 85 Watts (121%)

Memory Bandwidth

Performance-wise, the GeForce 8800 GTX should theoretically be quite a bit better than the GeForce GT 240 GDDR5 1GB overall. (explain)

GeForce 8800 GTX		86400 MB/sec
GeForce GT 240 GDDR5 1GB		54400 MB/sec
	Difference: 32000 (59%)

Texel Rate

The GeForce 8800 GTX will be quite a bit (about 109%) faster with regards to AF than the GeForce GT 240 GDDR5 1GB. (explain)

GeForce 8800 GTX		36800 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 19200 (109%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce 8800 GTX is a better choice, and very much so. (explain)

GeForce 8800 GTX		13800 Mpixels/sec
GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
	Difference: 9400 (214%)

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 data (measured in megabytes per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the 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 can be applied per 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.