Wifi speeds

I'm wondering whats limiting my wifi speed. Is it my router? I have an ultimate 6300n card and wired I get the 25mbits I'm supposed to but via wifi I only get 8-10mbits.
My router is a Microsoft MN-700

 

Definitely your router is the limited factor here. It is really dated.

I'm surprised there are still others still using the MN700 besides me .

 

Gee, that router is antique and is definitely limiting your 6300. If i were you, i'd get a new router. Preferable a wireless n router so you can achieve 300 or 450mbps in wireless. I hope for your sake that you don't have an internet connection that is above 10mbits .

 

Microsoft MN-700 is virtually identical (hardware wise) to early Linksys WRT54G and it is capable of 802.11g so it should be able to offer throughput wireless up to 20mbps.
Either signal quality is poor or firmware is poor (the router is based on some version of Windows CE which I know nothing about).

 

That throughput was only possible for the MN700 if no encryption without mixed mode was used.

Once you enable any of it encryption plus the mixed B+G mode, it starts slowing down pretty significantly.

 

What radio chip does it use? If it's BCM4318 like WRT54G the loss of throughput would have to be attributed to Windows CE firmware as it doesn't happen on Linux-based Linksys.
This question is a bit of OT- I'd like to know that- I don't think it will help OP.

 

I think it's using BCM4306.