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Upgrading the Lenovo Y720 RAM to 64GB

Upgrading the Lenovo Y720 RAM to 64GB

Hi everyone,

I’ve recently upgraded my Lenovo Y720 RAM to 64GB. This laptop came with 16GB initially, but it’s very easy to upgrade it.

Lenovo Y720 16GB RAM

I was browsing Amazon and found that the Samsung 32GB DDR4 SODIMM modules were the cheapest available, so I went ahead and ordered 2 of them.

Upgrading it was as easy as removing the back cover:

Lenovo Y720 motherboard with 16GB RAM

We can see the 2x 8GB RAM modules installed in the laptop here:

Samsung 8GB x2 RAM Modules in motherboard

And here they are removed:

Samsung 8GB x2 RAM Modules

The part number is M471A1K43CB1-CRC.

We will be replacing them with 2x 32GB Samsung DDR4 SODIMM modules with part number M471A4G43MB1-CTD:

Samsung 32GB x2 RAM Modules

Here we insert them in the laptop:

Samsung 32GB x2 RAM Modules in motherboard

A vew of the laptop’s motherboard with the new RAM modules:

Lenovo Y720 motherboard with 64GB RAM

And it booted!

Lenovo Y720 64GB RAM

Here’s the Task Manager reporting the 64GB of RAM:

Samsung 64GB RAM Lenovo Y720 1

In CPU-Z:

Samsung 64GB RAM Lenovo Y720 2

While the RAM should go up to 2666Mhz, the laptop’s CPU only supports it up to 2400Mhz. It also seems that CPU-Z could not read the RAM details, as the SPD tab is empty:

The most important thing is that now my laptop has 64GB of RAM which will be plenty for a very long time.

Let’s put my laptop fan to work at maximum speed!

Let’s put my laptop fan to work at maximum speed!

Hi everyone,

In this post, today I’ll share you this method that will surely end with your laptop overheating issues.

As you may know, CPU fans comes normally with 3 or 4 pins. 3-pin fans are Volage-controlled, where the variance in voltage changes the CPU fan speed. The 3rd cable sends rotational speed information to the computer and depending on the heat and the BIOS, it will either increase or decrease the fan to a specified RPM. This is very dependent on the machine.

4-pin fans are PWM-controlled. This means the voltage is constant. The 3rd cable again is the cable that sends rotational RPM information to the PC, while the 4th cable is the one where the PC sends the signal to the fan to change their speed.

The laptop we will be seeing today is the Lenovo Y510p. It is a 2013 model (and we are in 2018 now. Time flies!). This laptop fan is a 4-pin fan but the connector is propietary, meaning that the cables aren’t in order.

The problem with the laptop is that the BIOS doesn’t allows setting up the fan speed and neither does it provide a “Turbo” mode, something that some gaming laptops have to allow the fan to spin at the maximum speed and prevent overheating.

The laptop does has a tool that provides a function called “Dust Removal”. With this function, the fan indeed runs at maximum speed, but for some seconds. It then reduces the speed and then goes to maximum speed again and this process continues, but once the “cleaning” process finishes, the fan speed is reduced. Therefore, even if the CPU is hot, the fan isn’t spinning to its maximum speed.

The solution to this is to cut the PWM signal cable. This allows the fan to rotate to its maximum speed as it will not be receiving a PWM signal from the motherboard. That’s why you can also use a 4-pin fan into a 3-pin connector and it will run at its maximum speed, because without a signal coming from the PC to the fan, the fan will spin at the fastest speed given that the voltage is constant.

Here’s the process to be able to use the fan at its maximum speed:

The first step is to flip the laptop and remove the back cover. Note that previously I’ve modded the case to allow more airflow into the laptop:

Lenovo Y510p fan - 1

Here’s the cover removed:

Lenovo Y510p fan - 2

Now, focus at the fan:

Lenovo Y510p fan - 3

We need to disconnect the fan cable from the motherboard. Taking it out is very easy. We just need to carefully pull the cable:

Lenovo Y510p fan - 4

Here is the disconnected cable:

Lenovo Y510p fan - 5

We need to cut the brown cable:

Lenovo Y510p fan - 6

Now, we will connect it again to the motherboard:

Lenovo Y510p fan - 7

Done:

Lenovo Y510p fan - 8

And… It works!!!:

Lenovo Y510p fan - 9

CPU at 100% percent:

Lenovo Y510p fan - 10

GPU at 100% percent:

Lenovo Y510p fan - 11

And, here’s BOINC running:

Lenovo Y510p fan - 12

Well, actually, the CPU starts at almost 3.40Ghz, but will gradually reduce to at least 2.60Ghz (At least that’s what it does for me) when the Nvidia GPU is running 100%. Still, I haven’t seen the CPU running at less than 2.40Ghz this way.

Also, be sure to use ThrottleStop or it will stay at 2.40Ghz. ThrottleStop will allow the laptop to use the Turbo Boost frecuencies.

That’s all. I hope you enjoyed this post!