Short Answer: No.
Long Answer: Lenovo repair team confirmed that if you upgrade ram or ssd, you will need to keep and reinstall your old components before arranging any repairs, otherwise they won’t repair under warranty..

  1. Can you get G-Sync or Freesync on an external monitor?
    YES – Using a USB-C to Displayport cable (The external Monitor needs to support Gsync/Freesync for it to function)
  2. Can you disable Nvidia Optimus (integrated graphics)?
    YES – Using Lenovo Vantage app on Windows or in the BIOS.
  3.  Does it support Resizable BAR?
    YES
  4.  Is there an SSD size limit?
    NO
  5. Is RAM upgradeable?
    YES – Two DDR4 SODIMMS. Both should be populated from the factory (either 2×8 or 2x16GB sticks), running at 3200MHz.
  6. Hey, i’m thinking about adding a second m.2 drive and ram in to the laptop. Do I lose with that my waranty?
    No, you dont. Only when sending in for repair, make sure to remove the custom drives and rams and send in with the stock ones. only then would the repair be accepted. So do not sell the SSD and RAM your laptop came with, just in case.
  7. How good is “HDR”?
    The display is only HDR400 and implementation in Windows 10 is bad, so not recommended as a replacement to TrueHDR TV/Monitor.
  8. Does it support USB-PD?
    YES – the rear USB-C port supports up to 100W USB-PD charging.
  9.  What charger does it ship with?
    All models (RTX 3060 and RTX 3070) ship with a heavy 300W charger.
  10. Does it have a backlit keyboard?
    YES – base models have a white baclklight with two levels of brightness, RGB backlight is optional.
  11.  My display has a yellow-ish tint You are missing ICC profiles. Download X-rite application here:

    https://pcsupport.lenovo.com/cz/en/products/laptops-and-netbooks/legion-series/legion-7-15imh05/downloads/ds543953

    And profiles here

    https://ulozto.cz/tamhle/S7HCuKDD5KHW/name/Nahrano-27-4-2021-v-8-32-14#!ZJZ0LmR2AzD3MQV5BJWxZGSxAwp4Z1qVFmIMAaAEEQSYMzH4AN==

    Copy content of that .rar archive into “C:\Windows\System32\spool\drivers\color” and use X-Rite to apply them.

  12. My laptop has coil whine when charging (and fans are turned OFF)
    Coil whine is a known issue. Some units have more of it then others, some people are more sensitive to it than others.
  13. My fans are too loud when not doing anything
    Lenovo added “Advanced Thermal Optimization” in 36WW BIOS that forces minimal fan speed in order to hide coil whine. You can disable it in the BIOS to allow the fans to switch off.
  14. Is there manual fan control?
    NO – Lenovo only provides three basic power profiles, toggleable either via Lenovo Vantage or by keyboard shortcut FN+Q. Legion Fan control achieves something better to allow bit more better fan control than stock mode, to know more visit LegionFanControl
  15.  Can I overclock the CPU/GPU?
    You can only overclock the GPU, that can be enabled in bios and further controlled using bios "Advanced overclock" feature. Alternatively MSI afterburner can be used to achieve granular overclocking with the curve using 3070 Tweak Guide - LaptopWiki and GPU OC guide 101 - LaptopWiki
  16. Is the logo on the back backlight?
    YES – Keyboard shortcut is FN+L
  17. Is my TimeSpy score of xxx any good?
    you can check the benchmark channel in our discord to compare your benchmarks with others and also here to know what you need for comparing benchmarks First time checklist - LaptopWiki
  18. How do I take the bottom cover off?
    Legion 5
    Legion 5 pro
    Legion 7
    You will need a proper toolkit. The front 4 screws are different from the rest. Be patient and be careful.

100w – Okay for charging, light to med productivity use but nothing too demanding

230w – probably good enough for full productivity use in non extreme cases and get good performance. And most gaming should be okay.

300w can be good if you want to get the most of it, have very demanding workloads or very demanding games.

Short answer? Yes.
Long answer: Our tests showed that a Legion with RTX3070 at TGP of 140W can pull up to 308W from the wall outlet. While during regular use, a weaker charger may be sufficient, when pushing the laptop to its limits, up to 300W of power can be drawn. 

For example, by charging the battery while gaming in performance mode.

In other cases, if you don’t need charging while gaming, a regular original Lenovo 230W charger or SlimQ 240W charger should be sufficient for 5800H+RTX3070 models. In case of 5900HX+RTX3080, you may encounter battery drain if using 230W charger while gaming in performance mode. However, no performance loss should be encountered.

Using USBC charging.

100W USBC will, however, greatly limit the dGPU, and no gaming should be expected.

65W USBC charger will keep the laptop running, but not charging while turned on.

Anything less is not likely going to work.

Yes. But actually no. The bandwidth is shared between internal display and the external port, which in practice means you won’t be able to make full use of HDMI 2.1 specs.

An Official Answer:

We’ve found the issue regarding the HDMI 2.1. It requires a minimum of 8 lanes to run at 4k at 120Hz but the configuration of the system’s bandwidth is divided into two. The other one is for the internal LCD uses and the other x4 lanes is for the HDMI 2.1 uses.

If you can disable the internal display, its possible to increase the bandwidth. However, we cannot find this option in BIOS to disable it.

As an alternative, you can use a USB-C to DisplayPort if your monitor has a DP 1.4a input.

Additionally, the 10bit display is a color display of the monitor but in order to meet that, you need to have the right GPU and cable. The system design simply cannot output 10Bit display to an external monitor via HDMI 2.1 because its bandwidth is shared with internal monitor.

To know more about this issue, please refer to this article.

 

 

With the Fans at max setting on the stand and full load one user achieved around 9°C cooler CPU and 7°C on GPU. You can notice some heat being pushed through the keyboard. Of course most of the air is being pushed through the fan vents. Probably some lower fan setting will be quite equal but with less keyboard heating. With the inert stripes removed and laptop stands fans turned off I’m getting 2°C cooler on load then stock.

Keep in mind comparable results to using a cooling stand can be achieved by simply ensuring the back side of the laptop is lifted.

Up to 1300 points in Timespy, which is a significant number. The exact gain will be highly dependent on what ram your model came with. Generally, the smaller the ram that is being replaced, the bigger the impact. In one case, going from 16GB “slow” stock ram to HyperX Impact DDR4 HX432S20IBK2/32, Timespy reported 1300 point gain.

After seeing a lot of confusion here about 1×8 and 1×16 and people thinking it has to do with single and dual rank. This specifically has nothing to do with ranks but everything to do with how a x8 device is configured and how a x16 device is configured within a DIMM.

In the video, Linus touched upon it but I think didn’t explicitly state the technical exact reason for the difference in performance. He was very close to it, and I think gave a sufficient explanation for it but here I’ll try to elaborate if it interests you.

You can lay out the total capacity for a DIMM in various ways really, in this case you have two ways to achieve 8GB of total capacity (note the bit to byte conversion):
1. 1 rank of 8 chips x 8Gb in density = 64Gb total density = 8GB total density
2. 1 rank of 4 chips x 16Gb in density = 64 Gb total density = 8GB total density

The nomenclature for the device width is related to the total amount of data pins on a channel. DDR4 channels are typically 64-bits wide, so if you have a:
1. x8 device- it means a single rank within the channel has exactly 8 chips to make-up 64 data pins
2. x16 device- it means a single rank within the channel has exactly 4 chips to make-up 64 data pins

Now with the explanation out of the way, you can now go deeper into the architectural layout typically found in devices in DDR4:
1. a x8 device has a total of 16 addressable banks (it has 4 Bank Groups and 4 Banks per Bank Group) with a 1KB page size [each page a bank is allowed to open at any given time]
1. a x16 device has a total of 8 addressable banks (it has 2 Bank Groups and 4 Banks per Bank Group) with a 2KB page size

Having less banks available to the MC means you have less resources to interleave and lower chances of extracting the full BW available according to the rated maximum bus speed. The analogy Linus gave about the librarian searching for a book makes total sense with this in mind.

Now the next thing to affect performance is the page size:
Typically the page size usually dictates tFAW (Four Activate Window Time), so it’s usually worse for 2KB than it is for 1KB by several nano-seconds which can affect performance [need to look up data sheets for a given device by the given manufacturer to look up exactly what they are]. Anyway as for why this happens, this is directly tied to memory advancements really, over time memory chip suppliers make denser chips on smaller nodes. As times goes on they will have more of one kind than the other. Given the density of the DIMM here is 8GB, that means as memory gets more advanced, they can make more wafers to supply everyone in the world (and a bonus is that its cheaper to include less chips on a module to sell).

Credits @kira

Make sure the default/JEDEC/PnP profile is DDR4-3200. It is not possible to use XMP or otherwise change memory settings in BIOS. Also, prefer dual rank, 8bit device width (2Rx8) RAM or Single Rank, 8bit device width (1Rx8) Ram.

No, any DDR4 SO-DIMM 1.2V can be installed. A 64 GB kit has been tested, but 128 GB should also work, even with Windows Home

No, any M2 2280 or 2242 drive can be installed. There is no limit.

Fn + B Break
Fn + P Pause
Fn + S SysRq
Fn + K ScrLk
Fn + Q Switch performance modes
Fn + L Turn the front cover LED on and off
Fn + R * Adjust display refresh rate
Fn + 4 Put the computer to sleep mode

Max power consumption

From our limited tests it seems that Lenovo Legions are able to draw only up to 230W directly from the outlet. If the power demands exceed that, the remaining power is drawn from the battery. However, battery can be charged simultaneously. This means that you may not even notice it happening.

In practice

If you need for example 240W, 230W will be drawn from the outlet and 10W will be drawn from the battery. The battery won’t charge, unless it falls under the preset threshold, which is 95% charge for normal mode and 55% charge for conservation mode. The moment battery charge falls under the threshold, charging gets activated, and the battery is quickly returned to 100% or 60% respectively if the conservation mode is on. This cannot be avoided.

Forcing battery draw

Draw above 230W is rarely noted. So far we managed to reliably and repeatedly replicate it only on L7+5900HX+3080, however we had users reporting similar occurrence even on less power hungry models. It is highly likely that the draining happens in very specific scenarios. For example, the worst battery drain occurred while playing a game on a newly released (and possibly badly optimized) map in a game called Squad, on the said L7 model with 3080, while also connected to external monitor, running in performance mode, OC enabled in the BIOS, with max brightness, while using the built in speakers, using WiFi, RGB and other peripherals (basically one of the “worst” case scenario for power demands. Could still be made worse by further OC and charging other devices). About 1% battery drop every 15 minutes.

Power spikes

Please note that while 3080 is rated at 165W, power spikes can happen very often, even every other second, and can be anywhere from 180W to 220W+. The biggest combined load of CPU+GPU we recorded in logs was 279W. However the higher the spike the shorter it lasts. Interestingly, similar spikes can be seen even on 3070, which is rated much lower at 140W. There is no reason to believe that 3060 can’t have similiar spikes, though we have not managed to properly test that model with logs enabled and can only base our belief on the claims of other users.

Conclusion

Even if battery drain affects a weaker model, it doesn’t mean the 300W brick is necessary. If the spike above 230W happens less often than dips under 230W, battery should be able to charge about equally as often as it is used, and hence even a 230W brick should be able to keep the laptop battery around the same level even with power spikes.

Battery lifespan due to battery drain

If you are worried that such use of battery may cause damage, look at the numbers. Even when the battery draining happens, it will most likely be about 5-10W drawn from the battery, which has about 80Wh capacity. When you use the laptop off the grid, using just the build in battery, you are most likely using anywhere between 10-20W of power, if not much more. As you can see, such battery drain puts less pressure on the battery than regular use of the laptop off the grid. The draining will put few extra unnecessary cycles on the battery, but overal it shouldn’t be too much. Even in the worse case we managed to simulate, it would take 25 hours of non-stop gaming to put the battery through one extra cycle. An average battery last about 500 cycles before it drops under 80% health, so as you can see, it would take many years of intense gaming to drop that low.

You can estimate how many extra cycles you could go through each year due to the battery draining, but if you played intense, unoptimized games with countless perihperals connected to your 5900HX, 3080-equipped laptop, 5 hours a day every day, you would add 73 extra cycles per year. But the chances are you are not charging your iPad for 5 hours a day every day while playing unptimazed demanding games or doing similar tasks, putting extra pressure on the power supply unit. For this reason even 70 extra cycles a year are not that likely.

In comparison, if you ran the laptop off the battery in the office or similar scenarios every day, 5 days a week, you would go through about 200 cycles. This means that battery draining due to “excessive gaming” is still relatively a small toll on the battery compared to regular use.

Credits @M164

Most users have bought either of those two:

AX200 or AX210 - AMD
AX201 or AX211 - Intel

Not necessary. Always check what is the minimum driver version required  for  the game to run. latest driver for a game would also cause weird bugs and issues making it a stressful situation.
Nvidia drivers can be downloaded from here

You can check the full model name of your machine either in vantage or in system information or in the Lenovo support page of your device.

It’s a fancy name for a very simple thing: minimum fan speed. It was mainly introduced to counter the coil whine which is mainly present when fans are off.

Here is what the options mean:

– Disabled – 0 RPM minimum fan speed
– Level 1 – 1800 RPM
– Level 2 – 2000 RPM
– Level 3 – 2100 RPM

In office workload:
– dgpu mode 165hz: 3.5h
– dgpu mode 60hz: 4.5h
– hybrid mode 165hz: 7h
– hybrid mode 60hz: 9h

Battery endurance is only an estimate. For improving the battery life, see the respective guides.

 Pick your product on the following link and you will get all the info and contact numbers: https://pcsupport.lenovo.com/qa/en/iwslookup#/noproduct
credits:@mind12