Re: Intel DP55KG + Intel Core i7 870 + Phoronix Benchmarks / TurboBoost

From: Justin Piszcz
Date: Mon Nov 09 2009 - 05:57:58 EST




On Sun, 8 Nov 2009, Justin Piszcz wrote:

Hello,

I performed a bunch of tests with my processor to see if Turbo Boost was
working correct, the short answer is, it /appears/ to be..

[ .. ]

There is another method to check whether Turbo Boost appears to be working, without ACPI_FREQ/etc, I noticed the none of the cores ever went above ~48-50c
for a single threaded application @ 100% CPU.

Now, with ACPI_FREQ+NO_HZ, etc, it is evident that the first core is probably
in Turbo Boost mode, the application being run also seems to indicate this as
it shows a slight increase in performance.

$ sensors
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +57.0M-0C (high = +84.0M-0C, crit = +100.0M-0C)

coretemp-isa-0001
Adapter: ISA adapter
Core 1: +57.0M-0C (high = +84.0M-0C, crit = +100.0M-0C)

coretemp-isa-0002
Adapter: ISA adapter
Core 2: +41.0M-0C (high = +84.0M-0C, crit = +100.0M-0C)

coretemp-isa-0003
Adapter: ISA adapter
Core 3: +41.0M-0C (high = +84.0M-0C, crit = +100.0M-0C)

coretemp-isa-0004
Adapter: ISA adapter
Core 4: +46.0M-0C (high = +84.0M-0C, crit = +100.0M-0C)

coretemp-isa-0005
Adapter: ISA adapter
Core 5: +46.0M-0C (high = +84.0M-0C, crit = +100.0M-0C)

coretemp-isa-0006
Adapter: ISA adapter
Core 6: +41.0M-0C (high = +84.0M-0C, crit = +100.0M-0C)

coretemp-isa-0007
Adapter: ISA adapter
Core 7: +41.0M-0C (high = +84.0M-0C, crit = +100.0M-0C)

Justin.

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