I eventually managed to get 4ghz stable on my 1090T but I found the only way to do it was to set cpu vcore to 1.5v. Is it ok to have the vcore set this high? Temps go up to 62'c in prime95 stress test, but are much lower when gaming, probably around 51/52'c.

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ASRock K10N78FullHD-hSLI R3.0 Motherboard
AMD Phenom II X6 1090T @ 3.9ghz
Sapphire Radeon 5870 1GB
4GB DDR2 RAM (4 4 4 12)
Corsair TX650W PSU
Thermaltake M5 Case
Windows Vista x64 Ultimate

Edited: 09/10/2011 at 10:04 PM by serbusfish

It's a good question, I o.c. my 1090 to 4.0, too, (19*211Mhz) bt with 1.46v and everything seems to be stable. I could game, stress the System with AIDA64 and use Prime95 at once. But when I use the Folding @Home Tracker with my GPU & CPU, the system crashes.... So I also would know if it's "good" to go till 1.5v.

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">http://valid.canardpc.com/show_oc.php?id=1991645"

P.S.: When I set the v to 1.5, the tems go to 63-64°

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">http://valid.canardpc.com/show_oc.php?id=1991645"