Are there any 2GB DIMMS that work in all 6 slots of the MSI K8N Master2?
The spec says it supports up to 12GB of RAM but all the QVL docs only rate it for 4 2GB DIMMS. I can put in 6 (decent, HP server pulls) and it counts up to 12Gb but keels over when it tries to boot. Clocking down to DDR 333 or even 266 makes no difference. All the DIMMS memtest86 fine in other motherbords.
I suspect the DIMM VRM's don't have the grunt to power a full complement of 2GB sticks.
Tuesday 12 January 2010
Opteron BIOS Support
My home servers are primarily Opteron 2XX-based.
It seems that support for the OEM Opterons (OSP2xx, OST2xx) in BIOSes is somewhat patchy. Based on the boards I've seen Tyan and MSI don't support them in their public BIOSes (Tiger K8WE, K8N Master2, K8T Master2) but SuperMicro does (H8DAE). These CPU's will work but the ACPI P-States aren't published by the BIOS so Cool'n'Quiet/Powernow doesn't work. The SuperMicro will even take two Opterons with different power profiles - say an OSP275 and an OSA275 and correctly handle their different P-state voltages.
Since these CPU's are turning up cheaply on eBay this is worth remembering. I have a couple of OSP's in my Iwill DK8N since it doesn't do Cool'n'Quiet so the reduced 68W power envelope matters.
BTW If your K8N Master2 conks out when you enable Cool'n'Quiet you need to do this mod.
It seems that support for the OEM Opterons (OSP2xx, OST2xx) in BIOSes is somewhat patchy. Based on the boards I've seen Tyan and MSI don't support them in their public BIOSes (Tiger K8WE, K8N Master2, K8T Master2) but SuperMicro does (H8DAE). These CPU's will work but the ACPI P-States aren't published by the BIOS so Cool'n'Quiet/Powernow doesn't work. The SuperMicro will even take two Opterons with different power profiles - say an OSP275 and an OSA275 and correctly handle their different P-state voltages.
Since these CPU's are turning up cheaply on eBay this is worth remembering. I have a couple of OSP's in my Iwill DK8N since it doesn't do Cool'n'Quiet so the reduced 68W power envelope matters.
BTW If your K8N Master2 conks out when you enable Cool'n'Quiet you need to do this mod.
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