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Windows 11 is coming!

This is a quick video to explain how to enable TPM on your system, how to jump onto the test program for Windows 11 to try it yourself and also a very quick look at the new Operating System itself.

BE WARNED: If you do decide to try Windows 11, its still far from complete and still in early testing stages, its stable but expect bugs and other oddities. If you are unsure or not technically minded it may be wise to skip the early builds until a more stable build gets

released.#pretechpcservices#Windows11#TPM#howto

PSU: The beginners guide to building. part 1

The Power Supply Unit, or PSU for short.

psu
a computer power supply from inside a desktop or tower PC case.

Most beginner guides will start with “AMD or Intel?” or “AMD or Nvidia?” or maybe “How much RAM?” But not us, we are going to start with possibly the most overlooked part of the PC. The humble Power Supply Unit or PSU for short.

It is often overlooked as most people tend to budget in the processor, RAM, Graphics card etc. The PSU tends to be the last thing most people look for and by this point the budget has either run out or not looking very good any more.

The downside to this is, alot of people are buying cheap, generic, no brand or unknown brand PSU’s. Honestly, don’t do that. Set aside a budget for the PSU for reasons I will get to, but most experienced system builders will agree, “Don’t cheap out on your PSU.”

Why shouldnt people go cheap on the PSU?

Consider this, you have just built your brand new PC. You have have just spent lots and lots of money on the various bits. You have more RGB that the local airport is concerned you are rerouting aircraft and all of this is powered by the PSU.

It is the job of the PSU to supply and maintain power to all your components, everything in your new shiny box is connected to the PSU somehow or another. If the PSU fails it could spell disaster for the rest of the system, a simple surge could fry parts of your new build and render them useless. If it isnt properly regulated it could be sending too much or not enough current to the various components inside your system and if something shorts out, the PSU may not have any short or surge protection to project itself.

What PSU should I go for then?

First thing you are going to need to know is what wattage you are going to need. PSU’s can start say way down at 200w and go all the to 1000w range. There is a handy website that can calculate what PSU wattage your system will need:

Power Supply Calculator

Click the link above and fill in the form as best you can with all the parts that is going to be inside your lovely new system. It will then figure out what PSU you need and will also recommend a couple for you to take a look at.

After you have worked out what wattage you need, the next thing most people will look at is: Certification.

psu

What is certification? It was originally founded in 2004 by Ecos Consulting (Now Ecova). It is voluntary for PSU manufacturers to get their units certified but is a serious recommendation when buying one.

In a nutshell, its how well a unit can hold at least 80%+ output, this chart might give you an idea:

For more indepth reading on the subject try here on wikipedia.

Modular or Non-Modular?

If you look at any regular PSU you will notice all the cables coming out the box, these are to connect your parts up inside the system.

Non-Modular will have all the cables hard wired into the box. The upside to this is that they tend to be cheaper and generally all the cables you need will all be there (we’ll cover the cables in a bit). The downside however is that you might end up with a lot of un-used cables that you need to hide and could become a cable mangement nightmare, unless you don’t mind having a load of cables dangling free inside the system of course.

Modular is where you connect the cables you need to the unit. You have full modular where there are no cables connected and semi-modular which only has the Motherboard and CPU power cables hardwired, which does make sense as you will always need those two regardless of the system you are building.

Instead what you have is a lot of loose cables in the box and there will be various 3 / 6 and 8 pin plugs on the side of the PSU. The upside to this is you only plug in what you use, so if you only have 1 SATA SSD for example, you need one SATA power cable, you wont have say another 4 just hanging around not doing anything, so if your after a tidy case and easy cable management, Modular is a good step. The downside however is they tend to cost more than a non-modular.

modular PSU

The picture above is from a Corsair fully modular PSU. You can see that you have different sizes of plugs, this is quite important. You can see the “Peripheral & SATA” are all 6 pin and the 6+2 PCIe and 4+4 CPU are all 8 pin and so on. Basically don’t try and plug a 6 pin into the 8 pin. The end result might not be pleasant.

They are all working on different outputs, currents and ground might be different, you could damage your PC if you plug the wrong cable into the wrong plug, althought the 8 pin will never fit into the 6 pin, the 6 could slip into the 8 if your not paying attention.

You mentioned cables?

Yes, yes I did. Modular or Non-Modular, there are a bunch of cables you are going to have to deal with.

  • 24 Pin ATX This is the “big one” (as in size) this provides power directly to the motherboard. This and the CPU one are required to even power on.
  • 4+4 CPU Provides a direct current for the processor, like the 24 Pin is required to just power up. The reason its 4+4 is the plug itself can be split in half from 8 pin to 4 pin. The reason is because of the power requirements that the processor needs, budget boards and CPU’s on the lower end, only really need the 4 pin, mid range and higher require more oompth so need the 8 pin.
  • 6+2 PCIe This is for the Graphics Card (or GPU for short) mostly mid to high end GPU’s draw more power than the Motherboard can give so you’re to provide your GPU with more power. Like the CPU one, it can be split from 8 pin to a 6 and a 2 pin (most GPU’s will be 8 or 6). Some will require 2 connections if its a high end beefy card, you might have to provide either 2 8pin or some have 1 8pin and 1 6pin, if your card requires two plugs, it is recommended you don’t use a “pony tail” (where one cable has two connections) use 1 per cable.
  • Peripheral and SATA / 6 Pin This is for everything else, mostly your harddrives (be it either HDD or SSD), Optical Drives (if for some reason your still using one) and anything else that requires a SATA power plug (for example, a Corsair H100 will use one for extra power).
  • Universal Power Lead The big black cable, this is the simplest and possibly most important. You need this to plug your PC into your power outlet at home.

Wrapping up.

So you worked out your output, figured what 80+ certificate you think is best (to be honest, aim for Gold or higher), you have figured out what needs power and if modular or non modular is good for you, now you have to buy it.

Shop around, read reviews, use Google or another search engine and look into your possible choosen PSU.

Branded PSU are usually more reliable than unbranded, there are a few names that a generally a safe bet (EVGA, Corsair, SeaSonic to name but a few).

Don’t be tempted by something that might look a better deal, for example; you have just seen a SeaSonic 650w on Amazon for about £100 but then you see a X-Series 700w for £22. Telling you now and I am sure the experienced system builder is behind me on this one, go for the SeaSonic, it will be worth the price and your system will be thankful for it.

Don’t cheap out.

Lockdown v2.0

As of November the 5th the UK goverment called a nationwide lockdown.

Albeit not as restrictive as the first one, there are still many people who have to isoloate or shield because of this.
Here are a few popular apps to keep in contact with friends, family and loved ones:

Facebook Messenger:If you have a Facebook account, chances are you have this already. This app allows for free text, audio and video calls to other Facebook Messenger users. This can be downloaded to your phone or tablet for free. If you use Facebook on your computer, you already have access to this via the Facebook page, where you would normally recieve messages. Computer users can video call phone users and vice versa.


WhatsApp:Also owned by Facebook. Primary a phone app which is free to download can also be used for text, video and audio calls. If you have a WhatsApp account, you access WhatsAppWeb on your computer. Go here: https://web.whatsapp.com/ and follow the instructions.


Skype/Teams:This is Microsofts alternative. Both usable on your PC and Phone etc, again offers free text / audio and video calls to other users of the same App. Bare in mind you can buy credits for Skype which allows you to make phone calls to landlines, but is free to call other Skype users.

There are many apps out there that allow free calls, but those were the more popular choices and chances are you already use them and so will most other people out there. These Apps are free to use and download but if you are using a phone it is recommended you connect to your homes wifi then it wont cost you any of your phones credit or internet allowence.


In the meantime PreTech PC Services will offer its normal services but for the time being will not be offering its call out services to keep everybody safe. You are still welcome to arrange a date and time to drop equipment off and should you require PreTech can offer remote services.
If you require any help feel free to drop us message,
Take care and stay safe 🙂

COVID19 and pretech pc services

With COVID19 running rampant, it is important that we isolate as much as possible. It is the best way we can stop the spread of this virus.

We have stopped offering our callout service for the duration of this. We can still offer a remote service (PC to PC) but this assumes your PC can boot to Windows.

Any other issues, you are still welcome to message us and PreTech will do its best to assist via messenger, email etc.

If you are worried about keeping in contact with loved ones, services like Skype, Whatsapp, Facebook Messenger all offer video calling and works with phone, laptops, tablets etc. And as long as they are connected to WiFi are free.

Any questions about these or help getting them setup, feel free to message and we can talk you through it.

For now and for the duration of the pandemic, face to face and callout services now unfortunately have to be put on hold.

We can still offer remote services and web site design service (consultation via Skype, email etc). For anything else, please feel free to message and we will help you as best we can.

The Facebook page will be continued to get updated as normal.

Stay safe and see you all on the other side!