Why can't half my Macs/devices connect at full wifi speed?

[brianhagen]

Hello, and thanks in advance.

Here is my situation. I have Verizon DSL (3.0Mbps Down, .75 Up) connected to a Belkin wireless router.

Only two of my computers connect at near full speed (2.80Mbps on average). The rest of my devices connect around 0.74Mps! Everything is connected through wifi. And in the same room.

The devices that connect at full:
Mac Mini (2.8mbps +)
IBM Laptop (2.8mps+)

The devices that connect at the slower speed; (0.74mbps)
Iphone 4s (two of them!)
Ipad 2 (ios5)
MacBook Pro

Ive restarted my router and modem several times, but to no affect. Ive also checked that each device has its own IP address. Turning off devices has zero effect on speed results. And its always the Mac Mini and IBM laptop that is running at full speed)

Im stuck! I don't know what it could be! Any advice would be appreciated.

Thanks
Brian

I should also note that i reset the lease on the iphones and ipads, but that didnt do anything either.

 

[steviem]

What router are you using, more specifically than Belkin. Is it G or N?

What are your DNS settings?

How is the speed moving files over the network between computers?

Are all of the devices connected wirelessly? If so, are they all connecting as N devices or as a mishmash?

 

[brianhagen]

Good questions!

Its a Belkin N1 router (F5D8231-4 v2)

My DNS settings are set "automatically from ISP"
DNS Address > 71.250.0.12
Secondary DNS Address > 68.237.161.12

To be honest, I don't often move files from computer to computer (and im not sure how to monitor the speed)

I have the MacBook Pro connected thru Airport. As well as the Mac Mini and Iphones. I'm not sure how I could force them to connect as N devices (Is the iphone even a N device?)


Thoughts?