Maxium Payload Size...where to find its meaning?

What does Maxium Payload Size mean in the graphics Bios?
Right now it is set to 4096 and wich are the differences among other settings???
Pad

Pad,
I thought that the Whatis.com information complete enough, but I have had a little experience with Serial Data Transitions Protocols.
However, when you looking for information on computer functions, you will find the data is 9 out 10 times in two forms.  One is so general in nature that it only gives you small piece of what need to know or if it goes in detail, then it is so narrow scope that you spend hours boiling down all the detailed information and again it only gives you small piece of what need to know.  However, over time, you learn to put all of the little pieces of information together, and then you know the subject.
I do not know if this will help will help, but I will try to explain what I learned to day from the Whatis.com.  As far, a PCI-E data transmitions are concerned in regards to Maximum Payload Size.
PCI-Express data transmitions are serial data transmitions, it is just that the controller, which is transmitting the data, has multiple serial routes to send the data to the device that is to receive the data.  Therefore, to send the data faster the controller breaks the data down into packages of data and sends the packets of data all at the time using its multiple routes.
This is where “Maximum Payload Size” comes in the controller as it divides the data by the number of routes it has to send the data on.  If the block of data the controller has to transmit is large each packet send by each route would be long and if the were no limit on the size of the packet the controller can send.  Then larger data blocks could tie up transmition of data to the device for long periods.  This is fine if there is only one program that needs to communicate with the device, but if and other program need to send a block of data to the device that is more important then its data would not get sent in a timely manor and say its was time dependant the system breaks down and the system crashes.
Therefore, your Maximum Payload size tell controller if the block of data being transmited must be broken a into groups of packets to be sent and before it sends each group of packets.  The controller must check and see if the is another block of data with higher priority that need to be sent.  If there is the controller switches to sending the higher priority block of data’s groups of packets and is checking priority of data blocks waiting repeated repeatedly until all blocks of data are sent with the data packet groups with highest priority being send first.  Then, it is the poor device controller’s job to receive those packets, place them back into individual blocks of data and for the device to use and act upon.
If still confused, Pad just say, so and I will try again.
Roger
When submitting a problem, include a complete list of your system components; include part numbers, all Power Supply Voltages, and their output ratings.  It is almost impossible to estimate what your problem is without knowing something about it. 

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