SpeedGuide.net TCP Analyzer Results
Tested on: 2012.04.19 10:05
IP address: 67.149.xxx.xxx
Client OS/browser: Windows Vista (Firefox 11.0)

TCP options string: 020405b40103030201010402
MSS: 1460
MTU: 1500
TCP Window: 65700 (multiple of MSS)
RWIN Scaling: 2 bits (2^2=4)
Unscaled RWIN : 16425
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 2628kbps (329KBytes/s)
BDP limit (500ms): 1051kbps (131KBytes/s)
MTU Discovery: ON
TTL: 54
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

No matter what I try to do, the unscaled receive window is never optimized, I have tried everything, manually, using the optimizer, everything.

I have 4GB RAM, Dual Core at 3.0 Ghz and my advertised speed is 15Mbps down, 1Mbps up. I am getting close to that but I want to push it a little bit further if I can. Is there any way to do that?