Lesson 03 - Overclocking related settings in the BIOS
In this lesson we are going to cover all of the overclocking related settings in the BIOS. Then we will set all of the frequency, multiplier and voltage settings to default so we are in full control. Last we will learn how to save the BIOS settings to a profile we can reload at a later time.
BIOS Information Screen
I've just powered on the computer and before we enter the BIOS I need to point something out. This is what is generally called a BIOS information screen. The information goes by very quickly so I've pressed the Pause-Break key to pause it. Pressing any other key will un-pause it. It shows the CPU model, the amount and speed of the memory and lots of other information that is useful when overclocking. This BIOS information screen is a little less useful than most, most will show the actual speed the CPU and RAM are running at. Just about all motherboard makers cover this information screen up with a logo screen. There is a key to press, typically Tab to hide the logo screen and show this information screen but you have to hit Tab every time you want to look and a lot of the time the information you need is gone before the Tab command takes effect. The first thing we're going to do in the BIOS is make sure that logo screen is turned off. I'll press any key to continue and on this computer I need to press Delete to enter the BIOS setup. On some computers it's the F2 key to enter the BIOS setup.
This is the BIOS main menu. It has several menu choices at the top that take you to different sections of the BIOS. Here's another common main menu layout with it's sections laid out on one common page. Just about every motherboard maker uses one of these two layouts. These videos are concentrating on overclocking so we're not going to get into most of these options. The Home PC Builder videos have a video that covers the BIOS in general and it's Lesson 1 of the Computer Setup Lessons.
Disabling the Logo Screen
The logo screen setting in this BIOS is under Advanced BIOS Features, called Full Screen Logo Show and it is Disabled so it won't come up. On other BIOSs it can be found under Boot and Boot Settings Configuration. The default is Enabled. You can select it and disable it.
Finding the Overclocking Settings
I'll hit esc on the keyboard to get back to the main menu. In this BIOS all of the overclocking related settings are in the MB Intelliegent Tweaker or (MIT). Most BIOS's have a section like this. Asus calls theirs the AI Tweaker. You can find EVGA's version under Frequency/Voltage Control and MSI calls theirs Cell. If your motherboard doesn't have a section like this or you can't find the options you see here in your BIOS then you won't be able to overclock the CPU. This is fairly rare these days but just to be on the safe side, before you buy a motherboard go to the makers website, download the motherboard manual and look for these settings.
Disabling Power Saving Features
Next we're going to find and disable the power saving features Quiet and Cool and C1E support so we have control over the speed of the CPU. In this BIOS the power saving features are under the Advanced BIOS Features. We'll make sure C1E support is disabled. We can press enter to disable C1E support or use the page up and down buttons to toggle through the options. Quiet and Cool is disabled.
Setting Fan Speeds to Maximum
Overview of Overclocking Settings
I'll hit esc to get back to the main menu. Lets go take at look at the overclocking related settings. I'm just going to cover the settings we will be changing. The others are fine at their defaults. The CPU clock Ratio is the CPU multiplier. CPU NorthBridge Frequency is the multiplier used to control the CPU cache and Memory Controller. CPU Host Clock Control is the reference clock speed. The HT Link Frequency controls the speed the HyperTransport bus runs at. Set Memory Clock allows us to change the memory multiplier. DRAM Configuration gives us the ability to change the memory timings. That is how long the memory waits between operations or it's CAS settings you'll remember from memory component lesson in the Home PC Builder videos. We can also set the reference clock speed and the memory multiplier here. These settings are mirrors of the ones on the main MIT screen. We'll hit esc to go back to the main MIT. Next on the list is System Voltage Control which lets us change the voltage for some key components. The ones we're interested in are the DRAM voltage which controls the amount of voltage going to the memory, CPU NB voltage which controls the voltage going to the CPU cache and onboard memory controller and the CPU Voltage Control which controls the voltage going the the CPU cores.
Saving Settings to a Profile