My new X220i wireless speed is soooo slow

[AbeW]

Hi
I just received my new X220i. It works great but my wireless speed is only 65Mbps
I have an older X100e that gives me a wireless speed of 300Mbps. Both are netbooks with"N" type wireless modules.
I upgraded all the drivers for the X220i but can't get better results.
I found that the X220i has an Intel 1000BGN wireless card and on the Intel website it says it is only good for 2.4Ghz not the 5Ghz the X100e can do.
Even at the 2.4Ghz level, shouldn't I get a faster speed than just 65Mbps?
Is there anyway I can upgrade? Buying an other Intel wireless module? or are there other drivers?
Please help.
Thanks
Abe