Just bought an SN21G5 to replace my SN95G5 since I wanted a PCI-Express video card.
I previously had no issue running my Opteron 175 overclocked in my SN95G5 to 2.64GHz, with a slight voltage bump.
Now that I am running my SN21G5, it will not overclock. I can get it to 2.42GHz, and with no voltage bump. I think the voltage change does not do anything! How I know this is because even if I leave it at stock speeds, and bump the voltage, there is no indicated voltage change in CPU-Z, whereas on my SN95G5 it would.
Before I go and bitch at Shuttle, could there be something else I am missing?
I have underclocked my memory to rule that out and bumped my HT multiplier down to 4x so as not to stress the HT path.
P.S. Normally I would post at sudhian.com but their forums have been down for a couple days. They seem to be the best crowd for Shuttle issues, but I know there's some knowledgable folks here as well.
I previously had no issue running my Opteron 175 overclocked in my SN95G5 to 2.64GHz, with a slight voltage bump.
Now that I am running my SN21G5, it will not overclock. I can get it to 2.42GHz, and with no voltage bump. I think the voltage change does not do anything! How I know this is because even if I leave it at stock speeds, and bump the voltage, there is no indicated voltage change in CPU-Z, whereas on my SN95G5 it would.
Before I go and bitch at Shuttle, could there be something else I am missing?
I have underclocked my memory to rule that out and bumped my HT multiplier down to 4x so as not to stress the HT path.
P.S. Normally I would post at sudhian.com but their forums have been down for a couple days. They seem to be the best crowd for Shuttle issues, but I know there's some knowledgable folks here as well.
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