I bought the x61 about two weeks ago. The bezel started separating in two days, but the lenovo forum admin was nice enough to schedule onsite service for me so I don't have to send it in to depot.
The person came and glued on a new bezel. The problem is now, the top part of the bezel is separating. I popped it back tightly as best as I could. Does anyone else encounter this problem?
I also have some question about cpu temperature and voltage. Since this is my first laptop, I am a bit unsure of what to expect. My cpu temperature (T8100) sometimes dip as low as 23C when idle. While I'm a bit flattered, this seems almost too good to be true. I ran two instances of cpu burn-in and the temperature hover around 57C-60C. Is this normal for an X61?
My other question deals with voltage. I have never looked inside a laptop BIOS before, so I do not know if the x61 is different, but so many option are closed off. Fan speed, cpu temperature, core voltage is nowhere to be seen. Additionally, it came with a BIOS version 2.16, which is nowhere to be found on the lenovo website. The fan is on full speed whenever the laptop is running. Why does the fan need to run on high when the cpu temperature is 23C? By monitoring the voltage with cpu-z, I noticed it change constantly from 1.063v to 1.313v. I checked the cpu spec on intel website and 1.313v does not seem to be within the normal range. Even when I have installed power manager, set the cpu to adaptive when plugged in, it normally spike to 1.313v. When I set it to lowest (cpu speed) on battery, it stay at a constant 1.063v. Should I be worried about the high voltage or is this normal?
One other question due to my lack of experience with laptop hardware. I constantly try out different distro of linux. On several occasion, the system has hanged due to software problem or my fault (usb drive accidently came off when running livecd). My Opteron desktop has survived numerous reformat, running different OSes, system crash, BSOD, bent cpu pin, running with broken fan and other sorts of nightmare. Would it be fair for me to assume the same sort of reliability from a laptop? I realized that this must seem like a silly question, but sometimes I get afraid that linux might somehow hang on my system with the fans turn off, cpu running full speed, frying/overheating the cpu. Is the BIOS good enough to keep this from happening?
Edit: I set the profile to highest (cpu speed) and the core vid is at a constant 1.250 v /2.10 ghz, so I see no reason for the spike to 1.313 v. Sometimes it spike even when the cpu is at a low speed of 1.5ghz.
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It is very very hard to kill a recent generation Intel processor. They have built in thermal protection that will shut it down before any permanent damage is done. The only ones that I have seen killed were from massive overvolting, along the lines of 1.7+. A 65nm chip can live at 1.6V with proper cooling and a 45nm at 1.45 but not something I would attempt in a notebook.
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Bump, someone please download cpu-z and see if your voltage spike like mine. The intel spec page says the maximum voltage is 1.250v. I've seen several desktop processor run at a lower voltage than that. There should be no reason why a laptop should be running at 1.313v. It may be a bug in the BIOS.
Edit: I just updated to service pack 1, and it seems the problem is solved. The voltage does not rise higher than 1.250v. It is quite a bit alarming that an OS can raise a cpu voltage. I thought BIOS was suppose to have it lock down. What if a virus is coded to raise the voltage and fry the cpu?
On second thought, it's still there.
I messed around with the power management on Vista. It seems that setting it on balanced allow the cpu to throttle down to 1 ghz, but the core voltage fluctuate constantly to the magic number of 1.313. Setting it on power saver, the cpu speed stays at 1.5ghz and the voltage is at a constant 1.063v. The balance setting is estimated with 1hour more battery life than power saver. The advanced setting between both profile are identical, so the frequency and voltage is hidden from me. For the life of me, I can't understand why setting it at balance caused the voltage to fluctuate so much when the frequency is so low. It changes every second.
Edit: It seems the voltage and frequency control depends on the minimum and maximum cpu percentage. When I set everything to 100%, everything fluctuate constantly. frequency and voltage. The strange thing is, it's only 1.313 v when the frequency is at 1.1ghz. Sometimes it would shoot up to 2.2ghz which is definitely more than what a T8100 suppose to run at. I'm really starting to get nervous here. This is all Vista with no third party software involved. I'm only using cpu-z to monitor.
Edit again: It's a bug with Vista when you set the minimum cpu percentage to low. It's running happy now at 1.1ghz at 1.1 v. It doesn't fluctuate to 1.313v anymore, whether the cpu is throttle or not. I just wonder if it did any damage.
Again Again: The switching point is between 38% and 39%. Anything above "minimum processor rate" of 39%, my penryn T8100 will throttle to 1197 mhz at 1.113 v. Anything below minimum processor rate of 39% in power option will throttle the cpu to 1500 mhz at 1.063v. So it actually runs at a lower voltage when it's at a higher frequency. The voltage and frequency goes hand in hand. It actually gets better battery life at 1500mhz because of the lower voltage. At least this is what Vista is telling me. This is definitely a bug with Vista. Now with this setting, whenever I run benchmark, it never goes over 1.250v unlike before when it hit 1.313v for apparently no reason.
Some question about x61/cpu temp/voltage
Discussion in 'Lenovo' started by anonymous23317, Aug 9, 2008.