Does Celeron Dual-Core T1600 support EIST?

tomdav20 · Mar 20, 2009

I search around the net but cannot get an answer. According Intel's site, Celeron Dual-Core T1600 should support EIST. I cannot get frequency and voltage scaling (not the bus speed throttling) work in Windows or Linux.
I guess not so many people have this lowest-end mobile cpu, therefore I cannot find much information on this matter.
My lappy is running hot and the battery drains so fast. Hope that more user how own this strange T1600 would come here and discuss this issue.

p.s. CPU-Z cannot recognize this cpu too

redduc900 · Mar 20, 2009

Yes the T1600 supports EIST, but in addition the C1E (Enhanced HALT State) option in the BIOS also needs to be enabled.

tomdav20 · Mar 21, 2009

I search around the net and didn't find any notebooks with T1600 can get EIST work.
The manufacturer doesn't provide BIOS upgrade. The BIOS doesn't have any settings about EIST.

redduc900 · Mar 21, 2009

What's the make and model of your notebook?

Moustacha · Mar 22, 2009

Same problems here. Using a Compaq Presario CQ60-210TU. It's got a celeron t1600 dual-core in it. Intel website says it supports EIST but /proc/cpuinfo doesn't have the est flag. I haven't tried windows on it as I put linux on it straight away.

Evilsizer · Mar 22, 2009

well i dont know of a linux equal to cpuz but that is one way to tell... either that or is there a real time cpu speed display for linux? cause if eist is working it would drop the cpu speed to down at idle ...

Moustacha · Mar 22, 2009

I don't have a strict apple-to-apples output of /proc/cpuinfo but it should give you some idea.
This is my desktop with cool'n'quiet on

Code:

processor	: 0
vendor_id	: AuthenticAMD
cpu family	: 15
model		: 67
model name	: AMD Athlon(tm) 64 X2 Dual Core Processor 6000+
stepping	: 3
cpu MHz		: 1000.000
cache size	: 1024 KB
physical id	: 0
siblings	: 2
core id		: 0
cpu cores	: 2
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 1
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow rep_good nopl pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy
bogomips	: 1999.95
TLB size	: 1024 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc

processor	: 1
vendor_id	: AuthenticAMD
cpu family	: 15
model		: 67
model name	: AMD Athlon(tm) 64 X2 Dual Core Processor 6000+
stepping	: 3
cpu MHz		: 1000.000
cache size	: 1024 KB
physical id	: 0
siblings	: 2
core id		: 1
cpu cores	: 2
apicid		: 1
initial apicid	: 1
fpu		: yes
fpu_exception	: yes
cpuid level	: 1
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow rep_good nopl pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy
bogomips	: 1999.95
TLB size	: 1024 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc

And my laptop with the celeron T1600

Code:

processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 15
model name	: Genuine Intel(R) CPU           T1600  @ 1.66GHz
stepping	: 13
cpu MHz		: 1662.475
cache size	: 1024 KB
physical id	: 0
siblings	: 2
core id		: 0
cpu cores	: 2
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 10
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 lm constant_tsc arch_perfmon pebs bts rep_good nopl pni monitor ds_cpl tm2 ssse3 cx16 xtpr lahf_lm
bogomips	: 3324.95
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 15
model name	: Genuine Intel(R) CPU           T1600  @ 1.66GHz
stepping	: 13
cpu MHz		: 1662.475
cache size	: 1024 KB
physical id	: 0
siblings	: 2
core id		: 1
cpu cores	: 2
apicid		: 1
initial apicid	: 1
fpu		: yes
fpu_exception	: yes
cpuid level	: 10
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 lm constant_tsc arch_perfmon pebs bts rep_good nopl pni monitor ds_cpl tm2 ssse3 cx16 xtpr lahf_lm
bogomips	: 3324.94
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management:

You can see my athlon is at 1GHz (it's lowest state) and the celeron is at 1.6GHz even though it's idle. In the flags for the celeron they say there should be 'est' for EIST but it's not. On the athlon however there's flags under the power management section but not on the celeron.

Does Celeron Dual-Core T1600 support EIST?

tomdav20

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redduc900

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tomdav20

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redduc900

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Moustacha

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Evilsizer

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Moustacha

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