Build Your Own Computer! - Part 2
I would like to apologize right off the top. My photographic skills are definitely lacking. As a result several of the pictures I took during the build are unusable. I'll do better next time!
In the October 1st newsletter I discussed the components I bought and why I chose them. A few days, after I placed the order, a box from NewEgg arrived at my door (just like Christmas). The box was full of computer goodies!
Opening the case
So let's get started by opening up the case. This case uses 2 screws on the back to open the side, which is very common, though others may use clips or levers. No matter which method they use opening a case is very easy!
(click the image for a larger view)
As you can see there is plenty of room for hard drives in this case, which is a major factor should more storage for the home server be needed in the future!
The first thing you should do is replace the connector plate. Aftermarket cases are made to accept motherboards from different manufacturers and there is a place on the back of the case that accepts a standard size connector plate. The maker of the motherboard will include a connector plate with the motherboard. The connector plate ensures the connectors on the motherboard have the correct holes in the case. I've installed the plate in the new case. It installs easily by simply snapping it into place.
(click the image for a larger view)
Install the motherboard
Now that the plate is in pull all the wires out of the way and lay the motherboard in the case. If you would like more information about motherboards, or need a refresher, read our What is a Motherboard article from the June newsletter. Be sure to insert the connectors into the plate first! You will notice a brass post in the area where the motherboard goes inside the case. This post fits into a witness hole in the motherboard to ensure the board is located properly with the connector plate and screw locations..
(click the image for a larger view)
Once you have the motherboard connectors inserted into the plate and the post into the witness hole make sure the motherboard is flat and nothing (wires, extra screws, etc) is between the motherboard and case. Use the provided screws to secure the motherboard to the case.
Install the CPU
After I've secured the motherboard I like to secure the CPU and its' cooling fan. In the past this was where you could trash a $300 (or more) chip. CPU's were actually connected to the motherboard with hundreds of pins that fit into a socket. Break a pin - throw the chip away. Presently chips have contacts that are pressed against the socket by a lever system, which is much easier and safer to install
Pressing the lever down will all the lever to slide away from the catch. Once clear of the catch pulling the lever up will remove the top plate, which retains the CPU. Remove the plastic protector and place the CPU in the socket. It will only fit one way. Flip the top plate back to the original position and return the lever to the catch. This may require a little force, as the lever applies pressure to the top plate to keep the CPU in place and in contact with the socket.
(click the image for a larger view)
Once the CPU is installed apply thermal grease to the top of the CPU. Thermal grease fills in the microscopic pits between the CPU and the CPU cooling fan. This ensures maximum heat transfer between the CPU and cooling fan. The amount of thermal grease you should use is very small, about the size of a grain of rice. Using more will actually make heat transfer less effective and might reduce the life of the CPU and/or decrease system stability.
Notice the four holes in the board just outside the CPU socket? This is where the CPU cooler mounts to the board. The CPU cooler will have four posts, one for each hole. Most use a type of push to latch connection. Gently insert the post into the hole and push down on the top of the post to lock it. Do not apply too much force - you don't want to break the motherboard. Plug the fan into the connection on the motherboard.
Mount the hard drives
In the first part of this article I mentioned that I was using existing IDE hard drives. First I connected the drives to the IDE cables. Below is an IDE cable. Notice that each connector has a different color? The blue connector goes to the motherboard. The black, or end, connector goes to the primary, or master, device. The middle, or gray, connector connects to the secondary, or slave, device. The connectors are "keyed" so they can not be inserted incorrectly. Here is another case where color doesn't always indicate what it should. The important thing to remember is two connectors on the IDE cable are closer to each other than the third. These are the connections for the devices. The one on the end is master. The one closer to the middle is the slave. The remaining connector goes to the motherboard. (Newer drives use the SATA interface, which is much simpler. SATA connections are one drive to one motherboard connection. No complicated "this goes there" scheme)
This case uses a "pressure fit" to hold the drives. I added 2 screws to hold them securely. Normally you want to leave some space between drives to allow heat dissipation, but in this instance I've added a fan to directly cool the drives.
Connect the IDE cables from the drives to the motherboard, and power connections to the drives.
(click the image for a larger view)
Having four drives creates quite a bit of heat. I will change the IDE cables to the newer round ones in the future. That should improve air flow around the drives by not blocking as much air as the large flat cable.
Cards and memory
If you would like more information about RAM, or need a refresher, read our What is RAM article from the July newsletter.
This motherboard supports both DDR RAM in the blue sockets, and DDR2 RAM in the yellow sockets. Remember that the RAM is "keyed" and will only fit in the correct socket. Install the memory modules by pulling the white locking tabs away from the slot. Align the memory module correctly with the slot and press down. Do not force the memory into the socket, but do insert it firmly.
This motherboard does not have video support built onto the board, so I chose an inexpensive AGP video card, which will go into the AGP slot. The mother board does have onboard 100Mb Ethernet, but I will install my gigabit ethernet card and disable the onboard ethernet.
The back of the case has removable "knockouts" that need to be removed before cards can be installed. A simple wiggle is usually enough to remove these. As with memory, align the card with the correct slot and press. Do not force a card into a slot, but do insert it firmly.
(click the image for a larger view)
We've got the power!
One of the important steps is connecting all of the power leads. The computer won't run without electricity. Fortunately the power connections are standard and "Keyed" so only the correct connector will fit the right connection. Pretty easy. You will have some connectors from the power supply that are not used. Don't worry. These are for future expansion!
The next step is connecting the front panel connections to the motherboard. If you haven't looked at your motherboard manual yet, now is the time! The functions are standard (power, reset, HD LED, USB, audio, etc), however the actual connection to the motherboard is up to the manufacturer.
(click the image for a larger view)
The finishing touches
The final thing you want to do before closing the case is route all the wiring so it is clear of all fans, neat, and out of the way. The last thing you want is a fan that doesn't work because a wire prevented it from turning and it burnt out, or a fan blade that wore through the insulation on a wire that shorted out your power supply!
(click the image for a larger view)
Important reminders!
- Don't handle the components more than you have to.
- Wear a grounding strap to prevent static discharge, which could damage sensitive electronics.
- Do not force anything!
- Fans should blow the same direction. You want air to travel through the case in one direction. Cold air in - warm air out!
- Plan ahead. Selecting the right components now can save you money and headaches down the road.
- Take your time.
- Read the manuals!
Hopefully this will be a good "pointer" for those who wish to build their own computer. For others, who may be scared off by the insides of a computer, hopefully this article will take away a little of that fear. Go ahead - open that computer and take a look. Nothing to be scared of.
Return to Part 1 of this article