Calisto Phenom II 550 just hit the shelves!

[C-BuZz]

unstable at stock? what did you use to test?

cheers

It fails Orthos instantly at any speed or volts. But the weird thing is it will scale to 4ghz & still boot into Windows no problem

I've narrowed it down to core 1 & 2 that are unstable using affinity.

C-BuZz

[GeorgeStorm]

So you sure its the cores that are making it fail
And not mem/NB etc?
Because it seems odd that they would fail orthos at stock whatever, but be able to get into windows at 4G
Especially if its XP, as the XP startup is really tough.

[C-BuZz]

So you sure its the cores that are making it fail
And not mem/NB etc?
Because it seems odd that they would fail orthos at stock whatever, but be able to get into windows at 4G
Especially if its XP, as the XP startup is really tough.

Using Windows 7. Pretty sure it's the cores that are failing. They fail Orthos at any speed, even underclocked.

Definately not the ram as I'm only changing multi's.

I still don't understand how it can hit 4Ghz & boot into Windows, yet can't Orthos underclocked & overvolted..

C-BuZz