Used to get 300Mbps now back to 130Mbps

so, when i first set up this my d-link dir625 i was only getting transmission speeds of 130Mbps. then after some tweaks to 40Mhz, WPA2, n-modes, etc i was getting max of 300, typically 270. i'm not sure what has changed but lately i cannot get over 130 again. my settings are the same as they were before.. any ideas?

 

For start, you can describe what kind of wireless card is installed in your notebook (dv7t?).

 

if its 2.4GHz, you are most likely to get around 130Mbps,
try:
a.) Updating drivers
b.) setting both:
b.1) your wireless card to 4 ~ 5Ghz
b.2) your DLINK to 4 ~ 5GHz


Someone correct me on the 4GHz thing, im not sure if only 5GHz can use "wide channels" ?

 

same here...i use to get that as well....after some tweaking it would momentarily hit 300Mbps then drop down to 130Mbps...

 

mine was steady at 270 a couple months. i'm not sure what i've done to get it back to <130. i have the intel 5100... my router only supports 2.4ghz. although i was getting 270mpbs for a while.. weird.

 

Many times your Router or Adapter just needs to be reset - not to factory defaults, just a POR as I describe below. I have to do mine at least once a week when my speed drops.

First thing to always do - perform a POR on the Router, and a Reset on the Adapter. You can do it from the Network/Sharing window in Vista. Click on the Status button, then Diagnose. You'll get a Reset prompt. On your Router, unplug it for at least 30 seconds, then plug it back in and verify the activity LED's are functioning properly.

Ask yourself the following questions

1. Have you installed any new hardware or software, or had any Windows updates?
2. Have you added anything electronic to the area where your Router or Adapter are? Have you moved either one to different location?
3. Have you added any additional network devices, or is there any additional activity on your network?
4. Have you made any changes to your Router or Adapter settings?
5. If your Network is unsecured, are you sure you don't have a network squatter riding your signal? I use MAC filtering instead of WPA2.
6. If you're living in an apartment building or townhouses, have any of your neighbors bought a new cordless phone set or even a new Router? Remember that RFI will drop you speed and signal as well.

It depends on how you're measuring your speed also - if you're just using Speed Test, their results change from test to test. There are some more accurate tests at DSLReports.com.

Remember that the 'net is literally like a superhighway - the metaphor wasn't chosen lightly. It has slowdowns, traffic jams, rush hour traffic, accidents, you name it - and all of it affects your speed at some point.

The other thing people tend to forget about is System Resources. If you don't restart that often (you just let your system sleep or hibernate) over time your Available RAM will get less and less, until it reaches critical levels and starts to use your HD as a virtual RAM device. When that happens, everything slows down.

Drive fragmentation can also affect network speed. Most native defraggers and cheaper defrag programs do not perform an adequate job defragging a drive, in large part because they don't defrag the boot sector or the paging/index file.

Whole Network Fragmentation
System Resource Management