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[Microsoft Store] Lenovo Ideapad Flex 5 - $649.00

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Sr. Member
Mar 26, 2012
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Edmonton
So it turns out using ThrottleStop to run at Windows startup, and a slight undervolt and enabling built in Intel Speed Shift nets a 40% improvement in performance when only the CPU is stressed.

https://imgur.com/a/hZAAf
Member
Aug 23, 2005
293 posts
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Hamilton
Luyuan20 wrote:
Dec 15th, 2017 2:29 pm
So it turns out using ThrottleStop to run at Windows startup, and a slight undervolt and enabling built in Intel Speed Shift nets a 40% improvement in performance when only the CPU is stressed.

https://imgur.com/a/hZAAf
You can change the Speed Shift value if you want the CPU clocks to be pinned at max during most types of load by setting it to 0. I would only use that in your AC profile though when the laptop is plugged in so it doesn't chew through the battery.
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Mar 28, 2006
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Those with orange tint issue, is your panel "M140NWF5 R3"? Anyone contact Lenovo about this?
Sr. Member
Mar 26, 2012
613 posts
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Edmonton
A-Town wrote:
Dec 15th, 2017 5:12 pm
You can change the Speed Shift value if you want the CPU clocks to be pinned at max during most types of load by setting it to 0. I would only use that in your AC profile though when the laptop is plugged in so it doesn't chew through the battery.
Does that pin the CPU at 25W though? I would imagine that the motherboard circuitry is only designed for a 15W constant load.
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Aug 23, 2005
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Hamilton
Luyuan20 wrote:
Dec 15th, 2017 5:20 pm
Does that pin the CPU at 25W though? I would imagine that the motherboard circuitry is only designed for a 15W constant load.
I should clarify "max"; as I meant in the context of most normal load situations, this would mean the base clock frequency. Going over the 15W TDP limit would mean the CPU is in Turbo Boost which is reserved for the most demanding loads in short bursts and is governed by a time limit as well as the thermal headroom available.

In other words, setting the Speed Shift value at 0 just means that it's going to be operating at it's base clock frequency and won't down clock in low load situations like idle. This will make normal use feel more "snappy" as there's no delay in waiting for the CPU to ramp up it's clock speed when it detects a higher performance state.
Sr. Member
Mar 26, 2012
613 posts
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Edmonton
A-Town wrote:
Dec 15th, 2017 6:15 pm
I should clarify "max"; as I meant in the context of most normal load situations, this would mean the base clock frequency. Going over the 15W TDP limit would mean the CPU is in Turbo Boost which is reserved for the most demanding loads in short bursts and is governed by a time limit as well as the thermal headroom available.

In other words, setting the Speed Shift value at 0 just means that it's going to be operating at it's base clock frequency and won't down clock in low load situations like idle. This will make normal use feel more "snappy" as there's no delay in waiting for the CPU to ramp up it's clock speed when it detects a higher performance state.
Thanks for the clarification. I'm just going to let the CPU run as low as it can during idle to improve battery life and let it use the full 15W during sustained load and leave the 25W for up to 28s as default. Speedshift is supposed to address the CPU ramp up very fast so it should feel very snappy as is.
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Apr 12, 2013
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Markham
rgilld wrote:
Dec 14th, 2017 8:48 am
Same with mine. All Fedex shows is that the label has been created. Was supposed to be delivered on the 12th.
my label was created on sunday with the wednesday delivery but it was picked up on wednesday from BC and arrived today in the GTA.

BTW anyone interested in buying another one? my sister said it looks ugly from the pictures ahahaha. I believe the return date is jan 31st yeah?
Newbie
Feb 26, 2017
43 posts
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Did you guys using ThrottleStop mess with the Speed Shift EPP value? The guide says to use 64 for the performance profile, however I can't seem to find how to modify this setting. It's on 128 on all my profiles.

Edit: Ok, clicking on it allows you to change it even though it doesn't show a box or anything like you'd normally expect when you can change the value.
Last edited by Senescence on Dec 15th, 2017 7:11 pm, edited 1 time in total.
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Aug 23, 2005
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Hamilton
Senescence wrote:
Dec 15th, 2017 7:11 pm
Did you guys using ThrottleStop mess with the Speed Shift EPP value? The guide says to use 64 for the performance profile, however I can't seem to find how to modify this setting. It's on 128 on all my profiles.
Click on the "128" and you can edit it. Also make sure to click on the TPL button and check off boxes for Enable Speed Shift and Enable Speed Shift when ThrottleStop starts
Newbie
Feb 26, 2017
43 posts
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Everest tells me I also have the M140NWF5 R3.

I also did a benchmark after I setup Task Scheduler to automatically run ThrottleStop in the background when the computer starts. All seems to work well: https://valid.x86.fr/ghcmir
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Mar 28, 2006
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Try dail -10 to Red Brightness from Intel UHD Graphic Control panel, that gives me acceptable neutral white. I am used to Lenovo's warmer color, people used to HP can try more aggressive -15.

Maybe someone with Spyder and M140NWF5 R3 can share a calibrated profile?
Senescence wrote:
Dec 15th, 2017 8:04 pm
Everest tells me I also have the M140NWF5 R3.

I also did a benchmark after I setup Task Scheduler to automatically run ThrottleStop in the background when the computer starts. All seems to work well: https://valid.x86.fr/ghcmir
Newbie
Feb 26, 2017
43 posts
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I'm having some trouble with the automatic orientation change. It stopped functioning at some point, I don't know when. I installed most of the drivers from Lenovo's site, made sure they were the ones for the laptop. That and ThrottleStop. Now Tablet Mode is never detected automatically, it doesn't switch or ask me no matter which form I'm trying to use. It's like there's no sensors anymore. I googled around and tried to fix "YMC" service, no luck. My YMC service is set to automatic but not started. If I try to start it, it fails. Is it supposed to be started?
Newbie
Apr 11, 2010
21 posts
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Ontario
My screen seems to be a bit yellowish. I can easily notice it even comparing it to my 720p Asus 5 year old laptop. So, I was thinking of returning the laptop.

However, after playing around with color management/calibration a little bit (ie by reducing the red and green colour), I think it's okay now.

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