I have the same batch as you and mine runs really hot, I cant do anything with it on air...think I'm gonna sell it.
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Even at stock? And you make sure heatsink is installed correctly? My temp at stock speed with underload all cores hover around 54-56. With 21x205 (4.305Ghz), all cores run around 79ish. This is on Scythe Mugen 2. I also have Extreme 120, which should run around the same temp.
found some more Bclks, this classified is awesome! not to mention batch# 3845B027
ifx-14 3fans, 1.381 Vcore, 239.4x21
http://valid.canardpc.com/show_oc.php?id=569733
I applied your suggestions and some of my own and the result was 5 more bclks. Can't thank you enough. :)
http://valid.canardpc.com/show_oc.php?id=569921
Here is a quick test of chip #1 on my bloodrage
Batch# 3849B028
Vcore 1.36
VTT 1.344
DIMM 1.616
I will test this chip on the classified as soon as I can....
Some Results from my 920 D0
http://www.abload.de/thumb/4510htonprimestablead53.jpg
1.5h Prime stable with HT on.