New version: cFosSpeed v8.0 accelerates downloads!

The new TCP RWIN expansion helps Windows TCP Auto-Tuning and also accelerate downloads with a lot of programs.

New major feature: RWIN Expansion
A lot of users don't get the maximum speed available for their Internet connection. In many cases the TCP Auto-Tuning of Windows 7/ Windows Vista cannot use the full download speed. In other cases the downloading programs are not written for today's high speed connections. cFosSpeed now accelerates these downloads by dynamically expanding the receive window size of the TCP connection to a value suitable for the current connection. This leads to (even for us) unexpected speed improvements! For example, we could double the download speed with Internet Explorer and nearly triple the speed of mobile UMTS downloads.

This is the most dramatic speed improvement any tuning software could achieve for the last years. Therefore we (with the help of our users) have compiled a list of scenarios in which the new cFosSpeed RWIN Expansion achieves these huge speed improvements. See here the list of impressive results:

http://www.cfos.de/en/cfosspeed/rwin-expansion.htm

Technical background: TCP Auto-Tuning measures the RTT of connections at the beginning and if data is sent. For connections with only received data and no data to send this measurement can become inaccurate, so the resulting RWIN remains too small. You can easily verify this behaviour with a fast Internet connection and high latency, for example a 50Mbit/s connection from Europe to America or a mobile broadband connection.

cFosSpeed v8 is "Ready for Windows 8"
Tested with Windows 8 Consumer Preview, x86 and x64.

As always: Lots of minor improvements and bugfixes
See whats-new.htm for details.