Slow LAN Speeds

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Wulfonce

New Member
I'm running Rogers high speed on my PC down stairs. Its hosting to two other PC's located upstairs via wireless router. The host PC is getting 20ms at 32 Mbps (hard wired). One of the other upstairs PC's is getting 22ms at 30Mbps (wireless). The PC I'm having problems with is getting 20ms at 15-18Mbps (wireless) well slower then the other two.

The wireless adapter on the one upstairs PC is about 5 years older then the adapter on the PC I'm having problems with. Yet its much much faster? This doesn't make sense. Both PC's are getting 90-100% signal strength.

If I hard wire the slow PC, it runs just as fast as the host PC. If I swap the wireless adapters around, the problematic PC runs just as slow as before, while the other PC will see a slight speed improvement (because the adapter is better).

This leads me to believe that something isn't set up right with the slow PC. Both adapters are working great, and the signal strength is great. So why is one of the PC's so much slower then the other even though its adapter is faster and newer.

I'm running Windows 7/xp SP3 on the slow PC. The other PC that's working good is running xp Sp3/ Windows 98. (gotta play the classics once in awhile) lol

The PC with the slow internet:

-AMD FX-4100 Quadcore
-Gigabyte GA-990FXA-UD3
-8 gigs ram
-Nvidia GeForce GTX 560

How do I go about fixing this problem.
 
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I just updated all my drivers, and did a tune up with advanced system care, then tested again. Its the same speed as before.

I should add that, I switched motherboards last year, and it was slow with the original motherboard aswell. A new motherboard and an upgrade from Xp to 7 and nothing changed. Being that the internet is slow with both adapters, is it possible that the router downstairs is sending less data to this PC somehow? Even though the signal is 100%? Is there any settings that could affect this?
 
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I'm trying to understand. The WIFI adapter is newer than the other one and the other one is 5 years older?
The newer WIFI adapter is the problematic adapter?
What kind of adapter is it?
Does the problematic adapter get the same speeds in a different computer?


I think you said this, but I'm not sure if that is true. Have you tried updating the firmware in the router? It could be the adapter. I have two and it's hit and miss and I never get 30 Mbps on them. I'm using 802.11G What are you using?
 
Wulfonce said:
I just updated all my drivers, and did a tune up with advanced system care, then tested again. Its the same speed as before.

I should add that, I switched motherboards last year, and it was slow with the original motherboard aswell. A new motherboard and an upgrade from Xp to 7 and nothing changed. Being that the internet is slow with both adapters, is it possible that the router downstairs is sending less data to this PC somehow? Even though the signal is 100%? Is there any settings that could affect this?
Click to expand...

EDIT: I've tried setting the PC right beside the host. It makes no difference to the speed.

I also tried switching from channel 6 to channel 11 then back to channel 2, Same slow speed with all of them.
 
Agent Smith said:
I'm trying to understand. The WIFI adapter is newer than the other one and the other one is 5 years older?
The newer WIFI adapter is the problematic adapter?
What kind of adapter is it?
Does the problematic adapter get the same speeds in a different computer?


I think you said this, but I'm not sure if that is true. Have you tried updating the firmware in the router? It could be the adapter. I have two and it's hit and miss and I never get 30 Mbps on them. I'm using 802.11G What are you using?
Click to expand...


Having looked into the a bit more, I may have some facts mixed up.

The host PC is using a "D-Link Xtreme N Gigabit Router" DIR-665

The upstairs PC with the faster internet is running a D-Link Xtreme N Wireless PCI Adapter DWA-552 N300 (version 2)?
http://support.dlink.ca/ProductInfo.aspx?m=DWA-552

The other upstairs PC with the problem, is running a D-Link Xtreme N Wireless PCI Adapter DWA-552. N300+ (version 3)? Its suppose to be faster and have a stronger pickup according to the back of the box. I cant seem to find it in the product listings. It looks identical to this, but they're calling it a PCIe DWA-556? Did they change the name? I'm confused.
http://support.dlink.ca/ProductInfo.aspx?m=DWA-556

As far as I know the Xtreme N series had 4 models. N150, N300, N300+, N300+Dual band.

I swapped the newer adapter for the older one and got the same slow speed. The older adapter performs great when its in the other PC, but not in this one, which tends to suggest that its the PC's problem and not the adapters.

I could try swapping the newer adapter to the other PC just to confirm that its working ok, but if the older adapter goes from fast to slow by swapping PCs doesn't that suggest its a problem with the PC and not the adapter?

The firmware in the router? Do you mean the driver? Sorry my PC terminology isn't up to par yet. The driver is up to date, unless you mean something else.
 
Wulfonce said:
Having looked into the a bit more, I may have some facts mixed up.

The host PC is using a "D-Link Xtreme N Gigabit Router" DIR-665

The upstairs PC with the faster internet is running a D-Link Xtreme N Wireless PCI Adapter DWA-552 N300 (version 2)?
http://support.dlink.ca/ProductInfo.aspx?m=DWA-552

The other upstairs PC with the problem, is running a D-Link Xtreme N Wireless PCI Adapter DWA-552. N300+ (version 3)? Its suppose to be faster and have a stronger pickup according to the back of the box. I cant seem to find it in the product listings. It looks identical to this, but they're calling it a PCIe DWA-556? Did they change the name? I'm confused.
http://support.dlink.ca/ProductInfo.aspx?m=DWA-556

As far as I know the Xtreme N series had 4 models. N150, N300, N300+, N300+Dual band.

I swapped the newer adapter for the older one and got the same slow speed. The older adapter performs great when its in the other PC, but not in this one, which tends to suggest that its the PC's problem and not the adapters.

I could try swapping the newer adapter to the other PC just to confirm that its working ok, but if the older adapter goes from fast to slow by swapping PCs doesn't that suggest its a problem with the PC and not the adapter?

The firmware in the router? Do you mean the driver? Sorry my PC terminology isn't up to par yet. The driver is up to date, unless you mean something else.
Click to expand...


I dove into it some more today. The firmware was a year out of date, I updated it and got a small speed increase but nothing up to what I would consider normal. I logged into my D-link account and good god, there's so many settings, I don't know where to start. I'm betting the problem lies in there somewhere. At this point I don't know how to go about it.

I was using 802.11N/802.11G mix. Whatever that means. I tried it on one or the other and saw no change, so I left it on the mixed setting.
 
I would just use 802.11n since both adapters are n specific and that should give you the highest speeds.

I would try the new WIFI card in a different PC and see if the slow speeds reamain. If they do it is more than likely the computer. You could try a TCP stack reset on that slower PC. What operating system are you using?
 
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