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WinXP laptop temp question
Bill in Co wrote:
I've got one other question on this (somewhat hot) laptop issue, which I'm still trying to investigate. If one turns off all extraneous devices in BIOS, does that in any way impact the total power consumption (and thus heat) at the hardware level? I'm just wondering if disabling all the devices not being used in BIOS (and perhaps windows), such as Bluetooth, Serial and Parallel Ports, PC card ports, docking tray, etc, will literally (at the hardware level) turn OFF some IC chips, and thus reduce the overall temps and power consumption. In theory, it should disable the chip select, rather than gate off power to the chip. You would have to inspect individual chip datasheets to see what leverage is available in them. Some of the chips will have their own handler module in the BIOS code. And it's easy enough to check. Remove the battery. Connect the power adapter to a Kill-A-Watt meter (P4400). http://www.p3international.com/products/p4400.html Now, under quiescent conditions, turn off the items in question, run the OS, and see if there is any measurable difference to the total laptop power. And the WinXP OS is ideal for this - Windows 10 would swamp out any attempt to do experiments, by driving the power consumption all over the place. When you plug in the network cable on my laptop with Win10 running, the power about doubles. It has a picnic for itself. The CPU, GPU, chipset, DIMMs should draw the most power. A little Firewire controller chip might be a watt when it's busy, or less than that when not doing anything. Ethernet is about a watt. No idea on Wifi. Really old PCs (year 2000) run at almost constant power. There's hardly any savings on those. Newer machines have a larger power swing between quiet and busy. Paul |
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