Here are my Three reports (1) from DSL Report & other from Here, also from the PcPitstop too. What you think...
from DslReport.com
Your download speed : 4145925 bps, or 4145 kbps.
Browsers would show : about a 506 k/sec transfer rate.
Your upload speed : 820793 bps, or 820 kbps.
Your connection rocks .. above the 1mbit barrier!
from PcPitstop.com
Text Block Size 1000 KB
Download Time 2090 ms
Receive Buffer 204400 bytes
Transmission Speed 3828 Kb/s
SpeedGuide.net TCP/IP Analyzer
TCP options string = 020405b40103030201010402
MTU = 1500
MTU is fully optimized for broadband.
MSS = 1460
Maximum useful data in each packet = 1460, which is equal to MSS.
Default Receive Window (RWIN) = 204400
RWIN Scaling (RFC1323) = 2 bits
Unscaled Receive Window = 51100
RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
513920 (MSS x 44 * scale factor of 8)
256960 (MSS x 44 * scale factor of 4)
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)
bandwidth * delay product:
Your RcvWindow limits you to: 8176 kbps (1022 KBytes/s) @ 200ms
Your RcvWindow limits you to: 3270.4 kbps (408.8 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 53 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349)= 00000000
65587 connections tested since 03-10-2001, 14:30 ET
Analyzer version: Beta 0.94