How do you determine the wattage capacity needed by a power supply?

How do you determine the total wattage capacity needed by a power supply? You add up the total wattage requirements of all components inside the case as well as USB and FireWire devices that get their power from parts, then add 30% for power supply which should be rated 30% higher than expected needs.

Why should a power supply be rated about 30 percent higher than expected needs?

Why should a power supply be rated about 30 percent higher than expected needs? Power supplies that run at less than peak performance last longer and don’t overheat. In addition, a power supply loses some of its capacity over time.

What component uses fins to conduct heat away from a processor and is typically made of copper or aluminum or both?

heat sink 2

Which type of RAID technology keeps two or more drives in sync so that the data one drive is perfectly replicated to the other?

Disk mirroring, also known as RAID 1, is the replication of data to two or more disks. Disk mirroring is a good choice for applications that require high performance and high availability, such as transactional applications, email and operating systems.

Does raid1 improve performance?

There is no read performance increase with raid 1. This raid option is for redundancy. So if you have one of two drives fail, you can still operate from the mirrored working drive. However if your looking for a faster performance, but sacrifice redundancy and loss of data if one drive fails, you’d want raid 0.

Which RAID is best?

The best RAID for performance and redundancy

The only downside of RAID 6 is that the extra parity slows down performance.
RAID 60 is similar to RAID 50.
RAID 60 arrays provide high data transfer speeds as well.
For a balance of redundancy, disk drive usage and performance RAID 5 or RAID 50 are great options.

Which RAID is fastest?

RAID 0

Is RAID 0 or 1 better?

RAID 0 offers striping, which translates to better performance, but no-fault tolerance or data redundancy. RAID 1, on the other hand, offers mirroring, so the same data is available in two disks. RAID 1 is slightly slower than RAID 0 because there are two writes, but the read operations are equally fast.

What is the safest RAID configuration?

This RAID configuration is considered the most common secure RAID level. RAID 5 pairs data parity and with disk striping. This configuration requires a minimum of three drives to work, two for data striping and one for a parity checksum of the block data.

Why is RAID 5 not recommended?

Dell recommends not using RAID 5 for any business-critical data. RAID 5 carries higher risks of encountering an uncorrectable drive error during a rebuild, and therefore does not offer optimal data protection.

Which is faster RAID 5 or RAID 10?

When you have applications that require fast read/write operations, RAID 10 is the right choice because it doesn’t manage parity, so no checks are necessary. In fact, the read performance of RAID 10 is twice as fast as RAID 5.

How many disks can RAID 5 lose?

Only 1 disk failure is allowed in RAID5. If 2 disk fails data cannot be retrieved.

Why Aluminium is used in heat sink?

Heat sinks are designed to maximize the surface area in contact with the coolant fluid. Aluminum alloys are the most common heat sink material. This is because aluminum costs less than copper. However copper is used where higher levels of thermal conductivity are needed.

Why are heat sinks made of aluminum?

Aluminum is lightweight easy to manufacture and cost effective, making it an ideal choice for most heat sinks. Its ability to move heat, thermal conductivity, is about half of copper. This limits the distance heat can be moved, conducted, away from the heat source in the base of a heat sink.

How do you determine the wattage capacity needed by a power supply?

Which type of RAID technology keeps two or more drives in sync so that the data one drive is perfectly replicated to the other?

What component uses fins to conduct heat away from a processor and is typically made of copper or aluminum or both?

heat sink 2

How much power is consumed by a load drawing 5 A with 120 V across it?

600 watts

Which two components in a system might make a loud whining noise when there is a problem?

The power supply and the Hard drive are the two components that makes loud whining noise when a problem is detected. Explanation: Computers can undergo what’s called “coil whine,” which is a high-pitched noise that originates from the computer.

Which component in a high end gaming computer is likely to draw the most power what factor in a power supply do you need to consider to make sure this component has enough wattage?

You’ve decided to build a new gaming computer and are researching which power supply to buy. Which component in a high-end gaming computer is likely to draw the most power? What factor in a power supply do you need to consider to make sure this component has strong enough wattage? Video card.

Which component in a high end gaming computer is likely to draw the most power?

Video cards

What is 12V rail?

The 12v rail provides power for GPUs and CPUs, generally the two most power-hungry components. “Rails” is the term used to describe individual voltages within a power supply. In ATX12V PSUs 3.3V, 5V, 5Vsb, -12V, and +12V rails are present.

When advising a customer on the purchase of a new power supply you should explain that if the power supply runs at peak performance all the time it will overheat additionally power supplies can lose some capacity over time considering these conditions you?

When advising a customer on the purchase of a new power supply, you should explain that if the power supply runs at peak performance all the time, it will overheat. Additionally, power supplies can lose some capacity over time.

What is a typical sign that a capacitor is bad or has failed?

What is a typical sign that a capacitor is bad or has failed? -The capacitors have crusty corrosion at the base of the capacitors.

What is the second step in opening the case of a working computer?

IT 121 CH1 & CH2a

Question	Answer
Which of the following is the second step in opening the case of a working computer?	power down the system and unplug it
To what should you normally clip the ground bracelet before you work inside the computer case?	the side of the computer case

What can you tell Larry to check to find out why the clock does not keep the right time?

What can you tell Larry to check to find out why the clock does not keep the right time? The CMOS battery is bad and needs to be replaced.

What is the life of CMOS battery?

3 years

What is the price of CMOS battery?

Technotech Lithium Cell CR2032 CMOS 3V Battery(5 Pieces), Gray

M.R.P.:	₹ 399.00
Price:	₹ 135.00
You Save:	₹ 264.00 (66%)
	Inclusive of all taxes

Why does my computer time and date keep changing?

In cases where your date or time keeps changing from what you’ve previously set it to, it is likely that your computer is syncing with a time server. To prevent it from changing, disable time syncing.

Why is my automatic date and time wrong?

Scroll down and tap System. Tap Date & time. Tap the toggle next to Use network-provided time to disable the automatic time. Tap that same toggle again to re-enable it.

What happens when the CMOS battery dies?

When the CMOS battery dies, the computer loses vital information like date and time and information concerning its hardware and disc drives. This leads to an error in its operating system. The CMOS battery should be carefully maintained with regular usage to avoid the computer’s operating system from malfunctioning.

How can I fix my computer time and date permanently?

To set the date and time on your computer:

Press the Windows key on your keyboard to display the taskbar if it isn’t visible.
Right-click the Date/Time display on the taskbar and then choose Adjust Date/Time from the shortcut menu.
Click the Change Date and Time button.
Enter a new time in the Time field.

What is no boot process?

No boot means that the computer isn’t functioning as expected and, while lights can be On or Off in the motherboard, no video is display on the screen. No display can also mean no lights (LED) on the motherboard or no video is being displayed to the monitor.

How do you set time and date?

Set time, date & time zone

Open your phone’s Clock app .
Tap More. Settings.
Under “Clock,” pick your home time zone or change the date and time. To see or hide a clock for your home time zone when you’re in a different time zone, tap Automatic home clock.

How do I check my BIOS time?

To see it, first launch Task Manager from the Start menu or the Ctrl+Shift+Esc keyboard shortcut. Next, click the “Startup” tab. You’ll see your “last BIOS time” in the top-right of the interface. The time is displayed in seconds and will vary between systems.

What is a good last BIOS time?

The last BIOS time should be a fairly low number. On a modern PC, something around three seconds is often normal, and anything less than ten seconds probably isn’t a problem. For example, you might be able to stop your PC from displaying a logo at bootup, although that may only shave off 0.1 or 0.2 seconds.

What function does BIOS perform?

BIOS (basic input/output system) is the program a computer’s microprocessor uses to start the computer system after it is powered on. It also manages data flow between the computer’s operating system (OS) and attached devices, such as the hard disk, video adapter, keyboard, mouse and printer.

How do I reduce BIOS time?

Start with the BIOS

Move your boot drive to the First Boot Device position.
Disable boot devices not in use.
Disable Quick Boot will bypass many system tests.
Disable hardware you aren’t using such as Firewire ports, PS/2 mouse port, e-SATA, unused onboard NICs, etc.
Update to latest BIOS.

Why is my BIOS time so high?

Very often we see the Last BIOS Time of around 3 seconds. However, if you see the Last BIOS Time over 25-30 seconds, it means that there’s something wrong in your UEFI settings. If your PC checks for 4-5 seconds to boot from a network device, you need to disable network boot from the UEFI firmware settings.

Does more RAM speed up boot time?

The amount of RAM (memory) that is installed in the computer does affect the boot up times. Generally, the more RAM that is installed in a computer, the faster the computer will boot.

How do I change my BIOS time?

Setting the date and time in BIOS or CMOS setup

In the system setup menu, locate the date and time.
Using the arrow keys, navigate to the date or time, adjust them to your liking, and then select Save and Exit.

How do I change my BIOS to UEFI mode?

Select UEFI Boot Mode or Legacy BIOS Boot Mode (BIOS)

Access the BIOS Setup Utility.
From the BIOS Main menu screen, select Boot.
From the Boot screen, select UEFI/BIOS Boot Mode, and press Enter.
Use the up and down arrows to select Legacy BIOS Boot Mode or UEFI Boot Mode, and then press Enter.

What key will you press to enter BIOS?

To access your BIOS, you’ll need to press a key during the boot-up process. This key is often displayed during the boot process with a message “Press F2 to access BIOS”, “Press to enter setup”, or something similar. Common keys you may need to press include Delete, F1, F2, and Escape.

What is UEFI mode?

The Unified Extensible Firmware Interface (UEFI) is a specification that defines a software interface between an operating system and platform firmware. UEFI can support remote diagnostics and repair of computers, even with no operating system installed.