Struggling With Low Speeds < 15MBps Over Gigabit

StephenB wrote:
........try to figure out what component is interfering with the jumbo frames.

Well, I've stripped it back to basics.

'DELL XPS8300'
>
Belkin Cat6 UTP Patch Cable
>
'ReadyNas Ultra 4 Plus'

I actually had to join 2 x Cat6 cables joined with a brand new 'Startech Cat5e RJ45 Inline Coupler', because Amazon failed to deliver the 'Belkin 15m Cat6 Snagless STP Patch Cable' on time. :(

Anyhow, not good news!

Despite the connection being direct, the results from 'Lan Speed Test' and from Pinging were the same.

The result from 'Lan Speed Test' was a bit faster when I disabled jumbo frames at both ends (average of 23MBps), but pinging would would still crap out at 1449.

So, it's either the ReadyNAS or the PC.

While it's still set up like it is, I'll reboot the PC and re-enable the onboard LAN and try that.

At least then if it's the same result it's still either the ReadyNas or PC.

If the results are much faster, then I'll know it's the Intel 'Gigabit CT' card or associated software/settings that probably to blame.

Oh, one thing that I forgot to ask about speed expectation was, by what method of transfer are they calculated?

My speed results are based on 'Drag & Drop' via the Windows explorer interface. If this is not the best option, can some advise on a better method (both user friendly with fast transfer).

Again, thanks StephenB