I think I got really lucky with my cpu so far at 2.6 stock volts with my xp120. I've never seen a max case temp that high.
CPU Information (CPU #1):
Standard CPUID: Family: F, Model: 3, Stepping: 2
Extended CPUID: Family: F, Model: 23, Stepping: 2
CPUID String: 20F32
Processor APIC: 0
Processor: AMD Athlon 64 X2 3800+ (Toledo)
Revision: JH9-E6
Platform: Socket 939
Startup VCore: 1.350v
Maximum Case Temperature = 71C