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Thread ID: 61072 2005-08-23 22:10:00 PC Build - Install M/B with or without PCU, RAM etc? Randolf (75) Press F1
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383264 2005-08-24 11:59:00 I found these replies most helpful.

As I have an Athlon 64 Skt.939 CPU to put in, I think I will do that on a flat bench first. 1. I'll be able to see clearly what I'm doing, and 2. I like the idea of the whole M/B on a flat surface rather than suspended on a handful of standoff whatsits.

I'll just carry on and do the first test after it's in the case. Worried I might "short" something.

As a matter of interest, If you have the pins exactly lined up, how much force does it take to install the AMD CPU? Two replies have indicated it may be a problem? I was expecting just a firm pressure would be required, at the same time being ultra sensitive to any obvious resistance??
Randolf (75)
383265 2005-08-24 12:06:00 I've only used Socket A motherboards but they required very little if any force to put them in... A light push and theyre in
I agree that the real problem with AMD cpus are the heatsink/fans the amount of force required to clip them on is the main problem
bob_doe_nz (92)
383266 2005-08-24 12:21:00 cpu's take no or next to no force to slip into the socket.

754 and 939-pin fan/heatsinks dont require a screwdriver,they have a locking lever,very simple and effective device.

Socket A cpu's used a clip that had to be forced over a knog,how nuch force?,about as much required to lift a brick 1 inch off a table, Very little in reality but if you slip you could samage the board, I say could because I haven't seen a clip that was so poorly designed that this could happen in a long time, though early on there was many around that praticly invited you to slip and take a chunk out of a tracewire.

I myself may have even once done this very thing and ruined a $250 motherboard (which was my own,and nearly spankers,and I was just swapping over cpu's out of boredom,...shattered)

anyhow, assembly or partial assembly of the system on a flat surface is perfectly valid, Though by my logic if the board was going to break while having another item fitted to it then I would want it to happen so I could get rid of it, Chances of this happening are slim to nothing, and you can't gareentee that the heatsink will never be removed and need refitting over the life of the system....then what?...yank her out on the bench again?


But then, I make sure the board is mounted as it should,and that the psu is not in the box to get in the way of my screwdriver (for Socket A), It only takes one not very hard push to put the clip on.

(if anyone thinks its hard then gimmie a yell, I can get ya a days work jack-hammering down a 6 inch concrete wall,full of rio-bar....then you get to manhandle 10 ton of concrete rubble onto the back of a truck.....)
Metla (12)
383267 2005-08-25 01:27:00 I admit I haven't fitted heaps of CPUs (done maybe 10 in my short tenure from an original Pentium to the latest AMD).
The CPU is reasonably easy to fit, just a light tap with your finger (afterensuring you have the pins lined up) usually seats them.

The heatsink/fan on the other hand is a different story (when building a system, I hate fitting the heatsink in case the screwdriver slips (used on those heatsink fasteners with the slot for the flathead - older systems)).

While on the topic, is there an easy way thats motherboard safe of fitting these heatsinks??

ON the other hand, some other heatsinks can be fitted with just your hands (no tools required)
Myth (110)
383268 2005-08-25 02:08:00 .
While on the topic, is there an easy way thats motherboard safe of fitting these heatsinks??


You mean all heatsinks or just Socket A?

In my experience only the Socket A clips really stress the board,The idea is to have the correct size screwdriver, I go for one that has a tip smaller then the area it slips into,Then push down and out at the same time,as soon as its low enough to reach the clips twist it so it can hook over them.

Takes a second at the most, any longer and your applying the force in the wrong direction.(probally straight down,which means pushing ever harder downwards withought it doing any good,at the end of the travel the clip needs to go back towards the heatsink to clip on, not be pushed through the desk and a layer or three of solid rock into the earths core by some happy jack who thinks applying 400t of pressure on a component untill he slips and spears the board is a cunning move)
Metla (12)
383269 2005-08-25 03:50:00 just a light tap with your finger (afterensuring you have the pins lined up) usually seats them.

Not the best idea, that's why they are reffered to as "zif sockets"
"zero insertion force"
bartsdadhomer (80)
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