Here ya go
I am quoting G@M3FR3@K at CDFreaks forum. He quotes RaMaTz from CDRLabs.
-----Quote
"I read this tip on the CDRLabs.com forum by a member called RaMaTz. By changing a value in your registry you can make Nero Burning Rom show you the actual write speed (instead of the speed you selected). I tested this with Windows XP and Nero verson 5.5.8.2 and it works great. Here is how to do it. Pics were made by me, credits go fully to RaMaTz: "
Start Regedit via 'Start, Run, Regedit'. The Registry Editor will be started. Now go to 'HKEY_CURRENT_USER\Software\ahead\Nero - Burning Rom\Recorder':
The DWORD value in this screenshot has already been changed to 1, in your screen it will probably be 0