Go to http://www.cisco.com/warp/public/471/ttcp.html and download ttcpw.zip.
After that, unzip it and put a copy of the program on both machines on the network.
Open Command Prompt on both machines.
On one of the machines (preferably the slower one with less RAM), open ttcpw with the extension -r (so it could be 'C:\ttcpw\ttcpw.exe -r').
On the other machine, run the first test, which has the extension -t -s IPAddress (so it could be 'C:\ttcpw\ttcpw.exe -t -s 192.168.0.2').
Let that run for a while and get the results.
The next test has the extensions -t -s -b256 -n122880 -u -M IPAddress (so it could be 'C:\ttcpw\ttcpw.exe -t -s -b256 -n122880 -u -M 192.168.0.2').
Let that run for a while and get the results.
