Lenovo Legion Y740 17" 15"

Finally ordered a 17 inch Y740 with GTX 1660TI. It's the version in which g-sync doesn't work (i don't care about that..i just want the LG panel..not the old AUO 329d). Fingers crossed i won't return it..

Should arrive on tuesday..forgot to ask you guys..what SSD do the 9th gen ones use? I am talking about 1TB SSD.

Thanks.

 

I'm pretty sure the 1Tb SSDs in the Y740s are almost always a decent Samsung. You can check userbenchmark.com, in the search bar type 81UH (this is the 9th gen 15in model, you'll have to search what the 17in model is), and it'll show you the components people have. I just checked and it looks like all the 9th gen 15in have the Samsung PM981. They could possibly use a different 1Tb but of all the benchmarks people have run on that model, it's the only 1Tb showing up.

 

For the 2 different 3.1 USB ports in the back. According to my Device Manager, one port is an Intel port and one port is an Nvidia port. Would anyone know which is which?

 

Just got the Y740 17 inch 9th gen with 1660ti and 1TB (samsung) SSD. I'm somewhat of a display-freak and i can say the LG panel on this on is very good..no wonder it's on the Alienware m51 which is orders of magnitude more expensive..

However the glare coating is kind of weak and i don't know if i will keep it because of that reason (i hate the glare, i also have a great Eizo monitor i keep in storage because i couldn't stand to use it because of the glare).

I tested the AUO409D (on ROG laptops, on Y540 there is an updated version) and i can say this one blows that one out of the water..however that one had a very good anti-glare coating (though being kinda grainy reading became tiresome sometimes)..

This thing is freaking huge..can't even fit my 17 inch laptop support..

Seems like a really great laptop, though, if i can't get over the glare..i will order the Y540 17 inch..

 

Y740 9th gen 17 inch getting ~80C on the GPU (1660ti)

Getting ~81C on the CPU over 10-15 minutes (laptopmedia lists 80 on the 9750H).

Are the temps right?

 

@codeHusky

1.6 - not in debug bios . F2 and under configuration.

 

Got a 15-inch 9750h one a couple of weeks ago, can post excessive info about my testing of it later, but I'm still hung up on whether the weird processor temperature is a bad sign:



That's mostly just from running Cinebench R15. Core #3 shoots to ~95 almost immediately with stock settings, and sits there for the whole benchmark. But core #4 stays over 20 degrees cooler! #2 is also doing much better than the others. It always follows that pattern with anything that stresses the CPU--3 gets super hot, 4 stays super cold, others seem about where you'd expect. With some Throttlestop adjustments of -140 undervolt on core and cache (only the latter seems to matter) and changing the turbo power limits to 50/40 short/long, it mostly stays under 90 running Cinebench and doesn't lose much performance (it seems the power reduction reduces temp and undervolt helps bring the bench score back up to compensate), but that core temperature discrepancy doesn't go away. Another forum claimed a similar problem had to be poorly applied thermal paste, but I don't know if that makes sense (they sent it back for repasting and it made almost no difference) and can't exactly check that without voiding the warranty.

So... anyone know what's going on here, if anything?

 

Can anyone confirm that the laptop after a few hours goes into hibernation mode and can only be a awaken with the power button (and looks like a normal boot-up)? Or does mine have a power issue?

No input method works after a few hours, only the power button..

 

What panel have you got?

Windows power settings. Mine says turn off after 3 hours of sleeping. I guess that's the issue.

 

What gpu have you got? Is the rear lifted? What are the temperatures in the room? Is it the average temp? Or only before fans start working?

 

LG Display LP173WFG-SPD2 (its pretty great..also i think i fixed my glare issue..)

Just to confirm ..did you also have the issue when waking from hibernation? I mean it only responds to power button..no keyboard/mouse.

 

It is not an issue. And it does wake only after pressing the power button.

 

Ok thanks..man this thing is so big it won't fit my 17 inch adjustable notebook stand..

Only solution is to have it rest on its feet at 120 degrees...with the hope the feet glue won't give out..

 

2060 GPU, though this happens with both CPU-only tests and combined tests. The back is propped up an inch or so, but this doesn't seem to have much effect. Room is around 75 F, not humid. The fans are slow to kick in (a complaint everyone with newer models has, it seems) but even once they get going the temperatures don't change (unless it's under-watted, the fans seem to halt the temp-climb at around 90 in that case), though it's potentially thermal throttling less? (Seems to get higher scores if I can trick the fans into running more, using "performance" mode or just starting a test while they're already running. But thermal throttle appears to be all that's stopping it from overheating.)

It seems manageable for what it is, but I don't know if it's a defect of some sort that could get worse. That one core having heat-dissipation superpowers while most of the rest struggle is very strange. Almost like it's not actually running at full speed or something.

 

Now i wished i had gottten the RTX 2070 instead of the 1660TI (2060 without raytracing really). Is the rtx 2070 in these laptops MAX-q or normal?

 

Maxq

 

I agree completely. The fan performance was far better when you could force the fans to go full throttle. At this point, my speculation is that they have focused in the other direction and gimped the fans to facilitate the maximum of 40 db for the Max-Q specification... A focus that is far and away the wrong direction. Even modifying the fan curve in the developer BIOS by putting the active profiles to hit 100 percent at 75 degrees didn't do anything in practice.

Sent from my LM-G710 using Tapatalk

 

What happens if you change 75 to 70 or 65C?

 

I'm thinking that a temp probe difference between 1.3 and 1.6 is why adjusting the fan variables In 1.6 don't act properly.
**in the process of comparing the two Bioses ** my replacement personal y740 came in today with 1.3 and my work y740 has 1.6 .

Under the power options in windows. Which power plan are you using ?

 

Bizarrely, power options in control panel only came with one plan, "Balanced." Don't think I changed any settings in there besides disabling the hibernate and turn off hard disk timers (replaced the Seagate it came with with an SSD anyway). Fn+Q has the usual Quiet, Auto, and Performance; have mostly kept it on Auto, Performance just seems to run the fans slightly on idle and Quiet actually seems to run the fans more as well for some reason. The battery thing in the toolbar is still on the middle setting, "Better Performance," don't know if that affects anything.

 

Right click the power icon in the bottom right hand corner. And you should see windows mobility. Open that. And change to high performance there. Then it will show under the normal power settings options.

 

Wow, that's weird. "Windows Mobility" does have Balanced, Power Saver, and High Performance, but control panel only displays Balanced and whichever one is currently selected. Windows 10 shenanigans, apparently... haven't used this version before.

Anyway, Power Saver seems to cap the CPU at just under 3 GHz; Throttlestop already has like six different ways of achieving that. High Performance seems no different from Balanced. Not sure what result we're hunting for, exactly. (It had been on Balanced until just now.)

 

I'm butting in, but if I'm not completely mistaken (and if Win10 isn't glitching out again), laptops with forced "Modern Standby" will still only show "Balanced" in Windows Mobility Center.

This isn't relevant to the Y740, afaik.

 

Is there any option to set lower resolution to 60hz in 144hz display to save battery?

 

Anyone know how to permanently disable keyboard backlight (maybe a bios setting)? It resets after every power-off and i need to manually disable the backlight at startup.

Also would like to confirm my display has no G-SYNC present in nvidia control panel (9th gen CPU 17 inch display with 1660Ti)

 

Has anyone tries reposting the CPU/9750H to help with temps?
I’ve been looking at the 15” laptop again and can someone confirm all new models have the 500nit HDR screen and HDR is used when gaming? Is it for all games automatically or do you have to enable it in W10 ?
As for fan noise with the i7-9750H and new Bios are the fans quieter than the older ones with i7-8750H and older Bios? I’m just trying to guess do the fans not spool up as much that makes the temps seem much higher than the first gen Y740 with older Bios?
Any thermal or power throttling when gaming?
Cooling pad help with high CPU temps?
All I want is a relatively quiet laptop when gaming that doesn’t get to hot.


Sorry for all the questions but would really appreciate if someone can help with the answers.
Thanks

 

I have repasted 3 of them so far. The heat sinks being warped is the biggest issue I have found so far. And dropping .5 mm on the thermal pads on the mem chips for the GPU, and the top of the mosfets .Use .5mm thick thermalpads on these . The 1mm thick pads that are own there for the factory are way too thick. And what looks like a half a tube of thermal paste has been used on both the GPUs and CPUs of all three y740s .

 

Did that improve CPU temps?

 

Tremendously. Unfolding the ones that are what looks like just tossed under the Heatsinks helps too... Thanks QC . Lol

 

Do you have to remove the whole motherboard to repaste it? On my old Alienwares they had to have it removed just to unclip the fan cables.

Sent from my LM-G710 using Tapatalk

 

Not too picky about screens... But this one seems kinda dim, unless on max brightness. It's okay for things I do, but I would not call it great by any means. What do you like about it so much?

 

You just remove the bottom cover, then the Heatsinks 6 screws.

 

How much lower did temps get just repasting? Regular paste or LM?
Does that help with fan noise or is the same before and after?
I’ve heard conflicting reports about fan noise, notebookcheck says it’s good

But other reports saying it reaches up to 47db , is it because of the newer Bios?

 

The one other report about repasting this model (8750h version, but I doubt Lenovo changed their pasting procedure between those) said it did basically nothing:
I'd still be willing to try it if it wasn't an instant voided warranty. Still have no idea what to make of the wildly inconsistent core temps on mine.

Anyway, some other random thoughts in no particular order:

Screen seems fine on this one, one of the few things with no negatives. Maybe a tiny amount of backlight bleed at the bottom edge, but not visible in normal use. I don't know if that's ever a real problem, either I got lucky or people are exaggerating the issue.

GPU--2060--has been nearly as weird as the CPU, though at least it's not overheating. Has intermittent coil whine (clearly the GPU as it only happens when running a game or other 3D render), mainly noticeable when the fans aren't running, harsh buzzing sort of sound. Usually it's faint, but occasionally gets impressively loud for a few seconds when first loading a game or benchmark. Speaking of benchmarks, polarized results there: Time Spy graphics score was only 5488, below the minimum report on Userbenchmark. After setting up Afterburner's automatic overclock, it does much better, scoring 6515, close to the maximum. However, this doesn't seem to do anything in actual games besides making the card a few degrees hotter, and making the coil whine louder. Using a flat core-clock-curve at 1320 MHz mostly eliminates the whine, so it seems this is due to voltage switching or something. I'm not really a big-time gamer (hence not buying a 2070 or 2080 version) so it's probably good enough, but the whine and strange performance results are a bit concerning.

Besides what I already mentioned, CPU idles at right around 50 C, though it takes a while for it to creep up from 30 after startup. Don't know if that's normal, either. Fans stay off 90% of the time on idle, but maybe they should be running a bit more...

Sometimes after running an intensive app, the fans will go from moderate speed to zero in a fraction of a second. Other times they keep running for a couple minutes, slowing down gradually. Very odd.

Surface temperature in games can get pretty bad under some circumstances. Especially on the WASD keys, which isn't ideal. Underwatting the CPU helps keep this under control, but it still gets quite warm, and very hot up near the power button.

Opening this thing up is a real pain compared to my previous laptop; apparently teeny-tiny glued-in screws and plastic clips are the norm now. Had some success using old credit cards to help pry it open, but those clip snaps on the front edge are scary loud, sounds like they're breaking off. Needed to do it to swap out the extremely noisy stock hard drive (Seagate...) and minimal RAM (the latter was some generic brand, "SK Hynix?"). And then had to open it a couple more times because it seemed like the 32GB Crucial set I put in was somehow making it run hotter. Still haven't ruled that out.

Keyboard reverts to the spinning rainbow pattern after shutdown, restart, or hibernate. Why this is even the default setting, I have no idea. Fn+Space works to reset it to light blue, but it's a bit silly.

Audio jack, with my higher-quality headphones at least, is basically useless because of all the interference noise. Especially bad for games because the coil whine goes straight into the headphones. At least the speakers are decent. Maybe the plug is in a poor location; my old Ideapad has it in the bottom-right corner and does not have this issue. Using a USB DAC/amp fixes the problem but it's a bit annoying being forced to use that for pretty much everything.

Still leaning towards returning this thing, it's certainly more powerful than my (7-8 years) old laptop, but it has an awful lot of annoyances for something that cost ~$1500 including tax (and that was a sale price). The freaky CPU and noisy audio are probably my biggest complaints. It sounds like most of this stuff is typical for this model, so getting a replacement unit doesn't seem productive, unless I'm wrong about these problems being common.

 

@kotomikun

Only 1 of the three y740s I have received has had the blue paste. I could see where a repasted wouldn't possibly help. BUT, given how inconsistent the thermal pads have been, the amount of thermal paste used and how warped the Heatsinks are.. leveling back out the heatsink would make the repaste more effective.

@IKAS V using thermal Grizzly Kryonaut right now. Using LM on Heatsinks that are flat nets bad results. So once I get the Heatsinks like I need them. Then I will try the LM .

 

@IKAS V
My replacement y740 . Notice the black thermal pad laying on the GPU? And notice the torn blue thermal pad for the VRMS ? When I popped it open.. you could literally see the thermal hanging out from under the heatsink flapping.. lol. Also notice the folded thermal pad ? Results may vary. And Damn voiding a warranty, this is the third one I've opened with similar issues. Lol

 

Can anyone here with a 9750H model confirm if either the old 1.03 or 1.05 Bios versions have max fans instead of the thermal profiles? I was under the assumption the 9th gen models did not have a Bios with Max Fan mode. When I got my Y740 I was on 1.05, and it had the 3 thermal profiles already when pressing FN+Q. Apparently there is a much older 1.03 Bios that might have the Max Fan mode available for the 9750H models.

I'm happy with my thermals after tweaking being on 1.06, but i'd just like to know if there ever was a max fan mode available for the 9th gen models.

 

Well, if my choice is between trying to repaste (and re-pad?) to see if it helps and being unable to return it either way afterward, and just returning it without dissecting it first... the latter makes more sense to me. If you can afford to buy three of them to mess with, that's a very different situation.

Also of note: while the size of the power brick for this laptop doesn't bother me, the amount of heat it generates kinda does. Could nearly burn yourself touching that thing after doing anything more intense than web browsing. Maybe that's inevitable for a 230W supply, but you'd think its gargantuan size would help with that. Another issue my old gaming laptop does not have; that power brick is smaller and gets nowhere near as hot. Maybe heat is the new FPS.

 

Never once was my warranty claimed as Void for removing the heatsink. Technically they have to prove removing the heatsink caused the issue. Pictures of thermal pads falling off and out from under Heatsinks were taken, and that warrants me to investigate as to why my 1500$ laptop was a throttling space heater from the depths of hell. But then again I'm in the US, and I don't know what country you are in. But I even made sure it was documented in my account of the issues with the first one. Including the thermal pad issues and heatsink gap.
And it not necessarily that I have the funds to buy 3. 1 is dead. 1 is for work. And 1 is the replacement for the dead one. Lol. But when I pay for something, I expect it to do somewhat as expected. Not cook itself to death because someone was having a bad day in the install-a-heatsink department. Or a bad 3 days. However you want to look at it. Lol

 

Warranty coverage seems pretty inconsistent, I've heard people claim their return was denied because the screws weren't in perfect condition (some of mine were slightly dinged up before I did anything to them). So I feel like that's just another gamble. After all, I still don't have compelling evidence that that's actually the problem with mine. If I have time I guess I could try to get their word that taking off the heatsink wouldn't prevent a return, but I'm short on time in the return window as it is.

 

Let me look more tonight. I think I have found an inconsistency in between the Thermal values and probes between bios 1.3 and 1.6.

 

Mostly the fact that they pulled off a semi-glossy screen (with laptops its either full-on-grainy matte or full glossy) that, after a few days of testing, handles reflections pretty well, has accurate colors (for a laptop), though contrast seems a little off.

For me its plenty bright (keep it around 60), however it does have a contrast setting issue i think...because text looks lighter than on other displays..sometimes making reading more strenuous..i think that also gives it a sensation of dimness..

 

I'd definitely like to see a direct comparison between those, haven't tried reverting to 1.3 yet because I can't find anyone else who's done that and told us the results. If you mean the temperature readings could be wrong... that might explain how there could be a 20+ degree difference between two tiny segments of a coin-sized piece of metal, though going by how hot the keyboard can get without turbo-power reductions, the temperature readings probably aren't completely inaccurate.

 

There are two different probe types that report temps from what I am seeing. Also there is a different reporting method availability between 1.3 and 1.6- one allows EC to control fan speeds. And the other is using something different. I've ordered another bios chip .once it arrives I'll start making changes to see what kind of ruckus I can cause.
I learned with the first (dead) laptop that there is a over voltage protection on the bios chip , and unsoldering the chip and using my programmer would have fixed it. But it was within my return window so I went that route .
Buuuut this one (new replacement) I plan on figuring out what other than fan tables did Lenovo manage to mess up with the 1.6 as I've been experiencing hard lockups on the laptop (work) running 1.6 that I'm not having on 1.3(replacement) . So if it hits the fan with this one, I'll have a spare chip to go back to with minimal downtime to keep testing lol .

 

I think maybe I've been experiencing a similar issue. Mine is a 9750/2070 variant. While being in the middle of productivity tasks, suddenly my mouse slows to a crawl, and the whole things just stops and locks hard. No blue-screen, no errors, nothing. Only way out of it is to do a hard power-off and reboot. I can return to the same tasks I was doing, and the machine will then be totally fine. Has only happened to me once a week or so. Are your lock-ups similar?

I've chalked it up to either Windows update being aggressive in the background, or the fact that I cloned the orginal SSD over to a larger one. Originally, I had done a fresh install of Windows, but that broke the OSD for the keyboard shortcuts. Cloning left those working (even on Win1903).

My replacement device just shipped (my current one has a screen defect and stuck pixel). I'll be curious if I have similar issues with that device.

 

Did you undervolt?

 

Didn’t even think of that... is that one of the ways it can crash from an UV?

I did (-1.25), but I haven’t been super successful in getting it to stick. I keep forgetting to add TS to my run@startup programs. But the only times I’ve remembered to open it are when I’m doing things on battery, and that’s usually when I’m doing productivity tasks... that’s very possible!

I’ll have to pay more attention.

 

A couple pages back I mentioned that you need to use Nvidia Control Panel or if you're using Hybrid mode then the Intel Graphics Control Panel, and set a custom resolution through that.
If you google it there's plenty of tutorials.

Running the following in an admin cmd or powershell gives you some pretty neat stats: powercfg /batteryreport /output "C:\Battery.html"
Here are mine with 76Wh Battery, Hybrid mode, custom 60Hz resolution, brightness varying from 60-90%, windows in power saving, keyboard back light set to either off or the lowest brightness.
Seems like my average drain rate is 20-25%/hour

 

Looks like i'm having wrist pain (nerve compression) when i game because of the edges press on my left wrist..anyone has this problem with the 17 inch vers (or the 15?)?

 

Guys I had to send my 15" Y740 with 9750H and 2070 back for replacement as I kept getting hardlocks when restarting or shutting the machine down. Anyone else experiencing any hardlocks on their machine?