Latitude E7240 and E7440

Are you using a genuine Dell PSU rated at 65W or more and which has the centre pin in the power plug? The BIOS setup info should show what PSU the BIOS thinks is attached.

I tried running my E7440 on a Dell 45W PSU (which would give less travel weight) and it throttled itself down to unusable speed even though the power the computer needs is actually within the PSU capacity (but might need to reduce the battery charge rate under maximum CPU load).

John

 

Try Throttlestop - Set the clock and chipset modulation to 100% and see if that helps. May or not work but it's free and will taken 20 mins to test.

 

I solved this problem late last night.

At first, ThrottleStop would only bring it up from 1.6GHz to 1.9GHz (base clock) no matter what the power plan was being used. So I figured I'd remove all the Dell software from my computer aside from the mandatory Dell software for the touchpad. Seems to have worked!

I now have a power plan that caps the CPU at 1.8GHz (can't seem to cap it directly at 1.9GHz, maximum is 1.8GHz before it enables Turbo) and one that enables Turbo up to 2.6GHz. The CPU gets pretty hot at these higher clocks.

 

Define pretty hot, 85-90 Celsius is still a "comfortable" temp for a notebook CPU.

 

Around 65-70 degrees, which I know itself is fine since there's about 10-15 degrees of headroom before the fans kick in, but I like it colder.

Capped at 1.8GHz, it never goes over 60 degrees.

All personal preference. I have a 4790K in my desktop and I spent a couple of days undervolting/overclocking for the best mix of performance/noise ratio. Currently have it at 4.2GHz across all cores at 1.1v. Prime95 with a Nepton 240M hits 65 degrees max with fans basically silent at 800RPM.

 

I've learned to live with the hotter laptop temps, as long as I remain at least 10 degrees below the Tjunction, I'm comfortable with it, especially if it means lower fan speed. 65-70 is something I personally consider pretty decent. Heck, that's where my M6700 usually hangs at on low loads with the fans turned completely off.

 

Haha, I like it like a fridge.

 

it's possible to have two disk in this e7440 ? maybe an msata in the wan slot and a slim hdd in the 2.5" ?

 

That's what I have, the mSATA SSD in the miniPCI slot and the 1TB WD 7mm platter drive in the other bay.

 

I think I remember you saying that your E7440 had the 500GB conventional hard drive standard and you installed the SSD after you got it...correct? I'm assuming that you have the O/S on the SSD and use the hard drive for storage. How did you install the O/S on the SSD? I'm just trying to figure out what would be the easiest way to install it on the SSD and remove it from the HDD.