GeForce 8800 GS vs GeForce GT 240 GDDR5 1GB

Intro

Compare that to the GeForce GT 240 GDDR5 1GB, which makes use of a 40 nm design. nVidia has set the core frequency at 550 MHz. The GDDR5 RAM works at a speed of 850 MHz on this card. It features 96 SPUs along with 32 Texture Address Units 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 GS		105 Watts
	Difference: 35 Watts (50%)

Memory Bandwidth

Theoretically speaking, the GeForce GT 240 GDDR5 1GB will be 42% faster than the GeForce 8800 GS overall, because of its greater bandwidth. (explain)

GeForce GT 240 GDDR5 1GB		54400 MB/sec
GeForce 8800 GS		38400 MB/sec
	Difference: 16000 (42%)

Texel Rate

The GeForce 8800 GS is much (about 50%) more effective at texture filtering than the GeForce GT 240 GDDR5 1GB. (explain)

GeForce 8800 GS		26400 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 8800 (50%)

Pixel Rate

If using a high resolution is important to you, then the GeForce 8800 GS is superior to the GeForce GT 240 GDDR5 1GB, by far. (explain)

GeForce 8800 GS		6600 Mpixels/sec
GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
	Difference: 2200 (50%)

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 max amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, 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 worked out by multiplying the total texture units of the card by the core 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 in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could 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 fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.