RoadRunner gives different speeds depending on NIC card?

UNCjigga

Lifer
Dec 12, 2000
25,609
10,310
136
Okay here's the deal. We currently have Charlotte RoadRunner service running through a Toshiba cable modem connected through an SMC Barricade 10/100 4-port router/hub. One connection goes to my dad's room, where he has a slow computer so I don't care about his access speed. One connection goes to my sister's room, where her iPAQ running Win2k averages between 200k-300k/s depending on the site, and her computer has a Compaq Netelligent 10/100 card. One connection goes to my bedroom, and the last is open for a notebook.

I manually switch my bedroom connection between 3 computers; an Alpha machine I use as an NT4/Linux server (3Com 10/100), a P3 500 machine (Win2k, 3Com 10/100) and an Athlon machine (WinME, dead 3Com 10/100.) In my room, the connection would always vary widely between 60k-250k, but averaging just a bit slower than ISDN speeds. I figured this was maybe due to some interference or faulty ethernet wiring in my bedroom wall (I have tried switching ports in the router to no avail.) Now the Athlon's NIC card was recently toasted somehow so I pulled out a spare Realtek 8139 to replace it. As soon as the drivers were installed I tested the net, and boy was I surprised!!!

WITHOUT any download accelerators, the new card was averaging between 250k-500k sustained (RoadRunner is only supposed to be a 300k connection!) With DAP4 running, I pulled the Quake3 Team Arena demo from happy puppy in about 9 minutes (120MB!!!!!) I was tempted to pull the realtek NIC and put it in a few other machines to test it but I don't wanna ruin a good thing!!! Is this really possible or is their some other explanation for this (driver-related, chipset-related, RAM-related, HD related???) My system rigs page has all the relavent info so y'all net techies can figure out where the speed increase is coming from. Just so you know, the P3 500 machine (which I had in college) was easily averaging 400-500k Internet, 800k-1.4mbps LAN when hooked up to the dorm's T1. So far I've concluded that 3Com NICs are just not suited for cable modem connections and that these $5 Realtek cards are the shiznit!
 

spidey07

No Lifer
Aug 4, 2000
65,469
5
76
I'm really thinkin it was a driver/chipset conflict of thing. It is true that all NICs are not created equal, but to get those kinds of speed differences is bizarre.

By installing the new NIC you reinstalled and rebound the IP protocol which could have bumped your MS operating systems into shape.

go figure
 

RanDum72

Diamond Member
Feb 11, 2001
4,330
0
76
I have a D-link router/switch (DI-704) which is similar to the BArricade but without the print server. I noticed it likes Realtek based NICs better than my 3COM and Intel NICs, transfers are just a tad faster and smoother. With a Netgear router, it doesn't matter what brand NIC, everything is fast. Also, setting auto negotiation with 3COM nics always ensures the fastest connection between it and the switch (200mbs full-duplex).

Oh, and I have Roadrunner cable.:)
 

DocDoo

Golden Member
Oct 15, 2000
1,188
0
0
This is strange, but I have seen many times that a simple rebuild of the IP stacks brings the connection back to life. I agree with spidey07 that it was the driver/chip for that NIC.

BTW: I D/L the SP2 patch (106mb) in 4 minutes :)