I have been having some instability of my system with various symptoms showing up; 'stuttering' in gaming, odd/random shutdowns and the latest symptom (the reason for this post) the NIC can't seem to transfer data above 11MB/s (100Mbps).
System: Sabertooth FX990 R2.0 with FX-9590 XFX AMD R9-280 16GB G.Skill mem SSD, HDD and memdisk for testing BIOS was updated recently.
My test setup has 3 machines + NAS on the same switch. 1. System 1 (above) transfers data at 5-11MB/s (50-100Mbps) 2. System 2 (old Vista clunker) transfers data near ~95MB/s (~1Gbps) 3. System 3 (old Linux clunker) transfers data near ~95MB/s (~1Gbps)
I have tested the SSD, HDD and Virtual Disk and all have the appropriate internal disk transfer rates so it does not appear to be a disk related issue.
I have tested System 1 (above) under both Windows and a Linux LiveCD and both have a transfer rate of 5-11MB/s. Therefore, I don't believe it is a driver issue.
Since the NIC is onboard the Sabertooth FX990, is it safe to assume this is a Motherboard issue or could it be something else like a faulty chip?