GeForce 8800 GT 256MB vs GeForce GTX 560

Intro

Compare those specifications to the GeForce GTX 560, which features core speeds of 810 MHz on the GPU, and 1001 MHz on the 1024 MB of GDDR5 memory. It features 336 SPUs as well as 56 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 256MB		105 Watts
GeForce GTX 560		150 Watts
	Difference: 45 Watts (43%)

Memory Bandwidth

In theory, the GeForce GTX 560 will be 186% quicker than the GeForce 8800 GT 256MB in general, because of its greater data rate. (explain)

GeForce GTX 560		128128 MB/sec
GeForce 8800 GT 256MB		44800 MB/sec
	Difference: 83328 (186%)

Texel Rate

The GeForce GTX 560 should be quite a bit (more or less 35%) more effective at anisotropic filtering than the GeForce 8800 GT 256MB. (explain)

GeForce GTX 560		45360 Mtexels/sec
GeForce 8800 GT 256MB		33600 Mtexels/sec
	Difference: 11760 (35%)

Pixel Rate

The GeForce GTX 560 should be a lot (about 170%) more effective at FSAA than the GeForce 8800 GT 256MB, and should be able to handle higher resolutions more effectively. (explain)

GeForce GTX 560		25920 Mpixels/sec
GeForce 8800 GT 256MB		9600 Mpixels/sec
	Difference: 16320 (170%)

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 maximum amount of data (measured in megabytes per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes 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, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.