I have 2MB/s over network

[eric.ca]

I have 2MB/s over network from wireless Mac to wired Window or wired Linux... is that the best i can get?

[gv]

Depends on the router, connection, other access points close by, etc.

How much do you get when you transfer wired-wired?

[kawal]

you should at least get 54Mbps transfer speed (11mbps if you're still on 802.11-B). or as GV said it may depend on how far you are from the router. there's a function present on wireless devices which lowers down the transfer rate as you move farther from the access point to ensure stable connection and data integrity.

[gv]

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kawal wrote:

you should at least get 54Mbps transfer speed (11mbps if you're still on 802.11-B). or as GV said it may depend on how far you are from the router. there's a function present on wireless devices which lowers down the transfer rate as you move farther from the access point to ensure stable connection and data integrity.

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54 Mbit/s is no transfer speed!! It's the connection rate. It's the theoretical boundary and it's just supposed to be an indication for the qualtity of the connection. Generally, on a 54 Mbit/s connection you can be lucky to get approx. 1/2 that speed for real transfers. Something like 2-3 MB/s aka MByte/s aka 16-24 Mbit/s is generally very good on a 54 Mbit/s link. It can get worse with a lot of interference...

[eric.ca]

OK

I am using 802.11n over 5GHz. The good news is when I get in the same room as the router the speed goes to ~10MB/s wich is much much better.

I think my option would be either to move my router or to buy a range extender RE1000 but it is only 2.4 GHz!

[gv]

If you require reliable transfers at that rate the best option is running a wire or using power line ethernet.

A range expander would help you here. A repeater takes at least half the total available bandwidth, i.e. if you placed the RE1000 at the place where you can download 10 MB/s you get less than 5 MB/s through the repeater. Of course, you want to extend the range and you will hardly put the repeater in the same room as the router. Thus, it goes down further. You will most likely end up with what you have right now anyway...

Thus consider the wired options...