Googling lead me to either the C-states issue (more related to power sipping when laptop is in Sleep mode), or SpeedStep. I uninstalled the DPM software and the laptop ran blindingly fast. It’s a great feature when it works – I got almost 5 hours off my factory-new battery on the most thrifty of settings!
In my previous Dell laptops, the OS and/or bolt-on software did fantastic jobs of managing the SpeedStep feature. My brand new Dell Precision M4800 (i7, 16GB RAM, SSD, etc) became a boat anchor after one or both things happened: I installed the Dell Power Manager software (add many more granular power schemes) and updating the BIOS to A08. I too had the same problem, but came across your website in a more backwards fashion than the rest. Categories Technology Tags bios, dell, i7, laptop, performance, slow FWIW I suppose that this might mean that the laptop uses more battery, but you can be an informed consumer about whether you want to run fast or power-efficiently. Hopefully someone else thinks to Google for this problem and find themselves helped by a similar approach. After disabling Speed Step, I have been running for the entire day at speeds very similar to my desktop. Whatever the logic is that determines when to power down was clearly NOT working as intended on my laptop.
I guess that the idea of Speed Step is that the i7 powers itself down when it decides you’d like your system to perform like a 486. On my Dell, this was under the “Performance” settings. Except for every once in awhile, when it would take 6 or 7 seconds.īefore splurging for a new laptop, I decided to take a peek through my BIOS settings and managed to stumble across the culprit: the Intel “Speed Step” feature.
But to be thorough, I did remove practically any and every resident program that was running on what should have been a zippy Dell Latitude E6520 with a i7-2720QM (2.20GHz, 6M cache) processor.Īnd yet, running a utility that averaged about 5 seconds on my desktop consistently took 30 seconds on my laptop. In my case, I had been running Ubuntu so most of those tips are moot. Most of the Google results I found when digging around on this subject pointed to usual boring causes of slowness: too many programs being run on startup (which you can test with ms-config if you’re running Windows), anti-virus software, and other boring stuff of that sort.
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