Computer not getting gigabit speeds

[rgrwlco]

I have a computer on my network that isn't getting full gigabit speeds. I've tested this same cable on my laptop and am getting 800-900, but on the desktop its hardly pulling 400. I'm running the same dslreports speed test on each computer.

 

I tried installing a new gigabit network adapter (Intel I210-T1), and it got a little better than my onboard gigabit, but it's still not even half of what it should be. I tried swapping PCIe slots, but they're all the same. New drivers too. I tried changing speed/duplex from Auto to 1gbps full duplex, but that didn't do anything.

 

Is it maybe the age of the device? It's an FX-8350 @ 4.4ghz, 16gb of RAM. It runs fine with everything else, I can't imagine it would be limiting on this.

 

Specs: 64 Windows 10 Pro 1809, AMD FX-8350, M5A99X Evo BIOS 1708, 16GB PC3-17000, EVGA GTX 1070, 650W Seasonic PSU

[SenKa]

Are you running speedtest, how are you testing it?

 

My moms PC's gigabit port was nerfed somehow, new card fixed it for her.

[rgrwlco]

I'm running the Speedtest at https://dslreports.com/speedtest 

 

I run it on my desktop, and get ~400, unplug the cable from it and plug it into my laptop. Run the same speed test and get 800-900.

 

This is a new NIC. My onboard was getting around the same speeds as well.

[SenKa]

23 minutes ago, rgrwlco said:

I'm running the Speedtest at https://dslreports.com/speedtest 

 

I run it on my desktop, and get ~400, unplug the cable from it and plug it into my laptop. Run the same speed test and get 800-900.

 

This is a new NIC. My onboard was getting around the same speeds as well.

Strange... Same build of Windows 10 and browser of choice?

[rgrwlco]

Indeed. Both 64 1809, both in Chrome 73

[HanZie82]

27 minutes ago, rgrwlco said:

I'm running the Speedtest at https://dslreports.com/speedtest 

 

I run it on my desktop, and get ~400, unplug the cable from it and plug it into my laptop. Run the same speed test and get 800-900.

 

This is a new NIC. My onboard was getting around the same speeds as well.

Kinda sounds like the HDD is (possibly) bottlenecking it, try and make a RAMdisk then install browser there (portable if possible).

[rgrwlco]

I'm running a 1TB Samsung 860 Evo, but I'll give it a shot. Will report back.

[HanZie82]

Just now, rgrwlco said:

I'm running a 1TB Samsung 860 Evo, but I'll give it a shot. Will report back.

Oh lol, yeah thats not likely to bottleneck anything for a while.
So im guessing thats not it.

[rgrwlco]

Yeah, Installed Vivaldi on a RAMDisk, and that didn't change anything either. Darn.

[HanZie82]

23 minutes ago, rgrwlco said:

Yeah, Installed Vivaldi on a RAMDisk, and that didn't change anything either. Darn.

Sorry, altho with that nice drive, expected.

I cant think of any other bottlenecks then, specialy since you already changed adapters.

[rgrwlco]

If it helps at all, I just connected my desktop to my laptop using the ethernet cable and was able to transfer a file between them at about full speeds (~900Mbps).

 

*Edit- And in fact the internal network is working at full speed as well, if I do the transfer that way as well. So it's only my desktop and only on internet traffic that it's slow. But my laptop does indeed get the full gigabit on the internet.

[rgrwlco]

I believe I was able to find the problem. Auto-Tuning was disabled on my desktop, which is curious since I never touched that and it's supposed to be on by default. I kindly asked my computer to netsh interface tcp show global and it showed Receive Window Auto-Tuning Level was disabled. Upon suggesting that netsh int tcp set global autotuninglevel=normal and rebooting, I've been able to reach my desired speeds.