GeForce 8800 GT 512MB vs GeForce GT 240 GDDR5 1GB

Intro

Compare those specifications to the GeForce GT 240 GDDR5 1GB, which has core speeds of 550 MHz on the GPU, and 850 MHz on the 1024 MB of GDDR5 RAM. It features 96 SPUs as well as 32 TAUs and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5 1GB		70 Watts
GeForce 8800 GT 512MB		105 Watts
	Difference: 35 Watts (50%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 GT 512MB is 6% quicker than the GeForce GT 240 GDDR5 1GB in general, because of its higher data rate. (explain)

GeForce 8800 GT 512MB		57600 MB/sec
GeForce GT 240 GDDR5 1GB		54400 MB/sec
	Difference: 3200 (6%)

Texel Rate

The GeForce 8800 GT 512MB will be quite a bit (about 91%) better at anisotropic filtering than the GeForce GT 240 GDDR5 1GB. (explain)

GeForce 8800 GT 512MB		33600 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 16000 (91%)

Pixel Rate

The GeForce 8800 GT 512MB will be a lot (more or less 118%) faster with regards to FSAA than the GeForce GT 240 GDDR5 1GB, and able to handle higher screen resolutions more effectively. (explain)

GeForce 8800 GT 512MB		9600 Mpixels/sec
GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
	Difference: 5200 (118%)

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 transported over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 in one second. This is calculated by multiplying the total number 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 processed in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour 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 output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.