Mailinglist Archive: opensuse (880 mails)

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[opensuse] How is it with Intel Core i7 Max Turbo Frequency?
one hopefully short technical question. I have Intel Core i7-3630QM Processor, having 4 cores, 8 threads and running on
clock speed 2.4 GHz. It should be automatically overclocked to 3.4 GHz in case
of need, but I wonder how this works. Does it require any communication with
kernel or even with user? All HW listing tools say it is 2.4 GHz processor, so
I wonder how to make it 3.4 GHz one. ;-)

$ cat /proc/cpuinfo (8 times output below):
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 58
model name : Intel(R) Core(TM) i7-3630QM CPU @ 2.40GHz
stepping : 9
microcode : 0x17
cpu MHz : 1200.000
cache size : 6144 KB
physical id : 0
siblings : 8
core id : 0
cpu cores : 4
apicid : 0

initial apicid : 0

fpu : yes

fpu_exception : yes

cpuid level : 13

wp : yes

flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm
constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc
aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16
xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx
f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi
flexpriority ept vpid fsgsbase smep erms
bogomips : 4788.90

clflush size : 64

cache_alignment : 64

address sizes : 36 bits physical, 48 bits virtual

power management:

$ x86info
x86info v1.29. Dave Jones 2001-2011
Feedback to <davej@xxxxxxxxxx>.
Found 8 identical CPUs
Extended Family: 0 Extended Model: 3 Family: 6 Model: 58 Stepping: 9
Type: 0 (Original OEM)
CPU Model (x86info's best guess): Unknown model.
Processor name string (BIOS programmed): Intel(R) Core(TM) i7-3630QM CPU @
Total processor threads: 8
This system has 1 quad-core processor with hyper-threading (2 threads per
core) running at an estimated 2.40GHz

$ hwinfo --cpu
01: None 00.0: 10103 CPU
[Created at cpu.374]
Unique ID: rdCR.j8NaKXDZtZ6
Hardware Class: cpu
Arch: X86-64
Vendor: "GenuineIntel"
Model: 6.58.9 "Intel(R) Core(TM) i7-3630QM CPU @ 2.40GHz"
Clock: 1200 MHz
BogoMips: 4788.90
Cache: 6144 kb
Units/Processor: 16
Config Status: cfg=no, avail=yes, need=no, active=unknown

Nowhere any note about 3.4 GHz frequency... Why?
Have a nice day,

Vojtěch Zeisek

Komunita openSUSE GNU/Linuxu
Community of the openSUSE GNU/Linux
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