t61- t7300 2ghz i can only get 1197mhz

[hausman]

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TuuS wrote:

actually this specific model with Intel graphics should work fine with a 65w adapter, but you will need a good battery and proper settings in power manager.

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OK, thanks for the clarification. My X61s with integrated graphics won't run at its rated 1.6GHz CPU speed unless it's connected to a 90W adapter. It doesn't go faster than 1.2GHz on the 65W adapter. Moreover this doesn't depend on whether a battery is installed. In fact 90% of the time it runs without the battery.

I wonder why this varies from system to system even when they're both of a similar technical vintage.

[TuuS]

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hausman wrote:

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TuuS wrote:

actually this specific model with Intel graphics should work fine with a 65w adapter, but you will need a good battery and proper settings in power manager.

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OK, thanks for the clarification. My X61s with integrated graphics won't run at its rated 1.6GHz CPU speed unless it's connected to a 90W adapter. It doesn't go faster than 1.2GHz on the 65W adapter. Moreover this doesn't depend on whether a battery is installed. In fact 90% of the time it runs without the battery.

I wonder why this varies from system to system even when they're both of a similar technical vintage.

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That's a good question...   I do know that the model he has often ships with a 65w adapter so it should work with one, but I'm surprised that your x61s doesn't...   my guess is that if you're running with 65w and no battery that it's throttling, but perhaps the 90w is enough to let it run full power. I guess it would take some testing to tell for sure

[TuuS]

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milipili12 wrote:

my adapter is 65w and i have a x3100

Where is "Lenovo Power Manager app" ? is it in the bios?

cpuid hardware monitor pro  shows 54ºC in the CPUs playing two videos of 1080. Cpu 100% and cpu-z only 1197(x6)

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power manager app is installed on all factory prepared thinkpads and can be downloaded from lenovo website. It will install using a "balanced" power plan. Changing to "maximum performance" will stop most throttling.

The battery you selected in Generic, so it's hard to tell if it's good or bad. 

[hausman]

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TuuS wrote:

That's a good question...   I do know that the model he has often ships with a 65w adapter so it should work with one, but I'm surprised that your x61s doesn't...   my guess is that if you're running with 65w and no battery that it's throttling, but perhaps the 90w is enough to let it run full power. I guess it would take some testing to tell for sure

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I think I misspoke (mistyped) when I said (wrote), "Moreover this doesn't depend on whether a battery is installed." Let me clarify what I experience:

The X61s came with a 65W adapter so I assumed(!) that alone would be sufficient. Yet I found that it runs at full speed only when it's powered by:

1) 65W adapter and battery is installed

2) 90W adapter with or without battery installed

This had me puzzled for a while because initially I used the 65W adapter at the office on a UPS with battery removed (to extend its life) and a 90W adapter from another system when I travelled. I couldn't understand why CPU speed maxed out at 1.2GHz at the office even though the system was on AC where there was no need to conserve power. Then I read somewhere (this forum?) that I needed the battery installed with the 65W adapter to get full CPU speeds. Now I use the 90W adapter at the office and 65W adapter when travelling since in the latter situation the battery is always installed.

[TuuS]

The best way to prevent battery wear n tear is to set charge thresholds. I keep my battery installed and have it set to start charging only when it goes down below 70% and to stop charging at 90% Since I'm always on AC power, the battery only chages once every few months or so. The battery also provides a great protection from power outages.