Wireless N speed too slow

Hello
I have one problem
I have Router D-Link DIR-615 and this router is n speed so it should be 300 Mbps but in real world speed is dramatically slow 50 Mbps like with b/g speed
Even when I am near router is speed bad
I have checked everything and all is OK even Router is set on n mode
And this is the speed and this speed is b/g speed NOT n speed
Can anybody explain why speed is so poor?
Thank you

 

What wifi card do you have in your notebook?

 

Hi
It's Broadcom

 

Where are you getting the 50 Mbps speed from?

 

check first post I have added picture

 

Make sure that you use WPA2+AES as security.

 

I had a combined Broadcom WiFi+Bluetooth and it always showed 72 Mbps

 

Why on wireless n there is 50% signal and on a/g is 100% really dont understand!

 

how it makes difference signal with security ?
Edit:
And when I make changes in advanced options in wi-fi card it will show 144 and then it drops
to 52

 

You can't achieve "n" speeds unless you have WPA2+AES as security- that's a way to force users to use proper security rather than stick with WEP.
It would be helpful to know what Broadcom card do you have.

It looks like you're running 20MHz channel- that may be because you're using an older device a/g or because there are other networks in the vicinity that make your router to automatically fall back to 20MHz channel.

 

i just checked and yes we have that enhanced security enabled

 

Kind of- it's probably good enough but change cipher type to AES rather than TKIP/AES.
Anyway- what's your wifi card exactly? It may support only 20MHz mode.
Also use inSSIDer to check if there are any free wireless channels that you can use and verify your wireless speed when a/g device is not online.

 

it support 40 as well

 

You need to enable auto channel selection to hit 40MHZ it is part of regulation.
Otherwise it will revert to 20MHZ when channels are not available.

 

hi
i did changed to auto but still the same
i have replaced wi fi module to intel and still the same it showed embarasing 20Mbps
where is that 300Mbps what all manuf. claiming
they just saying bollocks to the people all marketing cheating
reality is completly somewhere else

 

In almost all cases it's the matter of settings or overcrowded channels which also means settings.
Post a screenshot from inSSIDer.

 

...or mis-matched capabilities between the wireless router and all of the wireless cards that connect to it. Things tend to downclock to the lowest common denominator.

 

I think slow speed is because third user is running only g and mine two running n as I showed so two different frequencies are mixed up ?

 

In compatibility mode it should work much faster even with a/b/g device on.
That said I've asked you to test the speed without the legacy device and post inSSIDer screenshot to help to rule out some possibilities.

Also- if you haven't done so already- update wireless drivers on all devices.

 

sorry what is legacy device and inSSIDer ?
I have all drivers up to date according to driver detective

 

But Guys
I really don't see Wi-Fi as great speed in near future in transferring such large files or full hd movie playback
Wi-Fi is just for connecting internet for browsing pages or connecting devices such printers that is actually it?
Is there any other device that can be connected over wi-fi ? exept mobiles OK
But I have solution and I know it longer time but I really considering to buy it and it is awesome !
Look at this:
That router seems to be good candidate because they says it can manage all mentioned things what I said above
but main thing is that picture below router that is awesome thing it would be perfect to have them in every rooms so have them 4 or 5 pieces

 

I agree that home-plugs /power-line plugs are a good way of retrofitting a network to a household but keep in ming that the fastest one rated @ 500mbps only achieve between 50-80mbps of actual throughput which doesn't make them faster than a good 802.11n router.
The range is better and it's cheaper but still it's not built for speed.

 

Right now,i have three computers, three game consoles, an ipod and a mobile connected to my network via wireless. I also use the network to stream media content, but unlike you, i actually get good speeds out of mine. I get around 125mbps of actual throughput, sometimes more sometimes a little less. File transfers from wired to wireless are usually done at 17MB/s and wireless to wireless at 5-7MB/s which isn't too shabby for wireless actually.

Wireless is for the ease of not having to route cables and also for any types of data transfer that doesn't require tremendous amounts of throughput.

 

@tijo

What router do you have?

 

A linksys E3000 , just re-did a file transfer from two wireless clients and i did get roughly 6.5MB/s reported by windows which seemed accurate when i did the math myself to confirm. 17MB/s wired-wireless is on a good day (sometimes i get around 14-15, peaked at around 18 once that's where i got my 125mbps figure) and i'm also on the only 5GHz network in the neighborhood which helps. There is no way i could achieve that kind of speeds on 2.4GHz.

EDIT: As i mentioned before, i'm in almost ideal conditions, i have the 5GHz band all to myself and the computers are 2 to 5 meters away from the router with only an interior wall between them and the router.

 

Yeah- Linksys WRT610n v2 alias E3000 is a good device.
Your throughput seem a little high but still possible although it's probably as far as you can go.

 

Well, like i said, i'm in almost ideal conditions, having the whole band to myself and i do get slower speeds sometimes, i've seen dips at 12MB/s wired-wireless and 3.5-4MB/s both wireless, but usually it's more around 14-17MB/s and 5-6MB/s. I actually did the math myself because i was thinking windows was toying with me with the transfer speeds it was showing me. I don't think i'd get that kind of throughput on 2.4GHz or if i wasn't the only one on 5GHz. Even the neighbor's only 300mbps 2.4GHz network went down to 144 (reported by inSSIDer) since more networks were added in the building.

In any case, my point was that you can get good throughput on wireless in the right conditions with the right equipment. I don't know how good or bad the D-Link dir-615 is, but from experience i've learned to stay away from D-Link. Bad memories...

 

you might have good router or clean area I was thinking I am in disturbing area quite few factors cousing my speed bad

I used to live in different area I had same router and when I was close to router with laptop wi-fi card Intel(R) WiFi Link 5100 AGN
speed was 300Mbps
When I went upstairs it was 160-200Mbps

@tijo
Yeah just red on pc advisor that best router is Cisco Linksys E4200
you have one of them here is link
it's going from fifth down to first router worst is d-link
Group test: what's the best wireless router? - PC Advisor

 

to the OP I didnt read the whole thread so maybe it was resolved but maybe your router is not duel band only backwards compatable. like the whole network is being downgraded to wireless G because of the wireless g connection you have on the other computer. it cant do both so it downgrades

 

Dual band has nothing to do with the type of connected devices, a dual band router will be able to transmit on both the 5GHz and 2.4GHz frequencies. Both have their advantages and disadvantages. 2.4GHz has better wall penetration and range, but the band is often crowded,other networks, cordless phones etc. 5GHz has less range and the signal fades quickly through walls, but almost no one uses it meaning that if you are on 5GHz, you have the band pretty much to yourself.

Operating the router in mixed n/g mode might limit the speed, but i doubt it would get as crappy as the OP's situation.

 

tijo is right- mixed mode will not cause fall-back to lower speeds for 802.11n devices. It will slightly affect their performance but that's all. With mixed mode one device can work @ "n" speed and another @ "g" speed.