I have been sweating this for two days. My Comcast speeds were dwindling for my 6Mb/768Kbps account. I knew they were faster in the past, but I couldn't acheive a score higher than 4300Kbps. I called Comcast and they were very helpful, "We'll send a tech out to test the line." Whatever, I knew modem had a connection well within reasonable range:
Downstream Value
Frequency 723000000 Hz Locked
Signal to Noise Ratio 34 dB
Power Level -3 dBmV
Upstream Value
Channel ID 2
Frequency 31000000 Hz Ranged
Power Level 48 dBmV
I tried VanBuren's settings based on some forums I read here using a 6000/768 setting with CableNut, but I wasn't seeing good results. It could be that I was using the tool incorrectly, and after I tell you what worked please tell me what I did wrong Then I tried TCPOptimizer again, but instead of clicking Optimal and then Saving my results (like I had done before) I checked the Modify All Network Adapters checkbox below the network device dropdown that displayed my Marvell Yukon Gigabit Ethernet 10/100/1000Base-T Adapter. Then I checked Optimal settings and saved. TCPOptimizer prompted me to reboot for the changes to take effect. After that I came right here to testmy.com to test. I was quite happy:
:::.. Download Stats ..:::
Download Connection is:: 5185 Kbps about 5.19 Mbps (tested with 5983 kB)
Download Speed is:: 633 kB/s
Tested From:: https://testmy.net/ (Server 1)
Test Time:: 2006/08/05 - 9:18am
Bottom Line:: 90X faster than 56K 1MB Download in 1.62 sec
Tested from a 5983 kB file and took 9.453 seconds to complete
Download Diagnosis:: 90% + Okay : running at 96.39 % of your hosts average (comcast.net)
D-Validation Link:: https://testmy.net/stats/id-4H0FK6CAI
User Agent:: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.2) [!]
It's still not 6Mb, but I have had a few tests that scored in the 98-99% of my host's average speed. My pre-optimization speeds were in the 3700-4200Kbps range.