Originally posted by: John M. Drescher
They are set to DDR400.
I believe I have the ChipKill ECC option turned on and background scrubbing on. Do you think this makes a difference?
BTW, Thanks for your help.
Try DDR333. I have never seen Tyan list a 2GB for DDR400. They are usually in the DDR333 section. My DDR333 setting is 2.5-3-3-7. I lose about 100 MB/s in bandwidth.
DDR400 3-3-3-8 was 8.5 GB/s memory bandwidth
DDR333 2.5-3-3-7 was 8.4 GB/s memory bandwidth
Moved them to K8WE/280s
DDR333 on 8GB is 9.1 GB/s.
Leave ECC settings to default. Scrubbing will slow down restarting the server. Chipkill ECC can prevent problems from bad DIMMs.
Put them both on CPU0 first bank. Set them to DDR333. Reboot and test with memtest86 ISO CD.
Could be DDR400 is making them flaky. Try DDR333 first.
Tyan Thunder K8WE
Dual AMD 280 Opterons
8GB NUMA enabled DDR333 2.5-3-3-7 RAM
PCI-X SCSI RAID