Intel Ultimate N 633 Poor Performance Speeds

I purchased this card (Amazon.com: Intel Ultimate N 633ANHMW IEEE 802.11n (draft) Wi-Fi Adapter - Mini PCI Express - 450Mbps, Bulk: Electronics) based on the reviews and feedback from members of this board.

I also purchased an extra antenna (Amazon.com: Tyco Wifi & Bluetooth Antenna: Everything Else). The product came with 2 antennas and I wasn't sure if the color of the antenna matters, so I just picked one.

I didn't want to take apart my laptop again, so I decided to coil the third antenna around the bottom of the laptop and holding it in place with electrical tape while making sure to keep it away from any metal (I read that this causes interference). This was based on what I read in a previous G73 thread in the past that I'm unable to locate. This is what another member did with no problem. The default 2 antennae in the G73 were installed on spots 1 and 2 on the card, while the extra one was installed on spot 3.

I'm getting horrible download and upload speeds at the University that I attend. Here are my results:



My classmate using a Samsung Series 7 Laptop with stock network card is gettings 40 mbps download speeds and 17mbps upload speeds.

I checked on the Intel website and made sure that I have the current drivers. I also made sure that the card that I bought on Amazon was not one of the Lenovo OEM brands.

Can anyone help me troubleshoot this problem?
This card is working even worse than the stock G73 card.

 

Seem like 2.4Ghz interference to me. Try to hit up a 5ghz SSID/MAC.

 

How would I do this? My school only has a single network connection to join. I'm not sure if it matters, but my classmate's networking card is also dual band compatible.

 

use inssider to see which AP you are connected to. (should be bolded)

Use intel connection manager or set the adapter advanced properties to 5.2ghz preferred.

If you are on a good signal 5.2 and still get those speed then something else is wrong.

 

Well, I changed my adapter setting to prefer 5.2 ghz. My speeds have improved, but I'm still not getting speeds comparable to my classmates. I feel like for the card that I picked up it should at least be able to perform as well.

 

I've tried taking out the 3rd antenna, and I'm getting 16 mbps download speeds and 14 mbps download speeds.

It's much improvement over before, but it still seems to be lacking. For such a supposedly good card, it's performing rather poorly still. Any suggestions?

Should I just have Asus install it for me? I don't feel I'm getting my money's worth for this card - especially when the speeds can't even match a lesser card.

 

Last try bumping to see if anyone can help me.