Cat 3406b rebuild kit

Cat 3406b rebuild kit

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Cat 3406b rebuild kit

Hello I want to put together a computer which will be dedicated for the use of the children of a church in Mexico. It will be running Windows XP Professional x64 and the processor will be an AMD Athlon 64 3500+. The computer will have one HD with 1.5GB of memory and a second HD with 256MB of memory.

The problem is that I have absolutely no idea about what kind of power supply to choose and where. I have some experience with computers with less than 1GB of memory but for more I would like to know what kind of power supply and where to buy it.

1 Answer


You want to get a good quality power supply. It will almost certainly not be able to handle the whole 1.5gb of RAM - but I doubt you'll need that much memory.

For example, I have a PC with two HDs, 512mb RAM and an AMD Athlon 64 3500+, and the power supply I use for it is a 450watt unit. It won't be able to handle a 4gb RAM configuration, but it's plenty of power for my computer.

If you want to save money, look for a PC that has a built in power supply. They usually have a pretty small one, so you might want to buy the rest separately. I've done this before myself.

Also, you'll probably want to buy something with a very high efficiency rating. It doesn't really matter what the rating is, but the higher the efficiency, the more you're going to save in the long run. I'd suggest at least 80%.

Finally, make sure that it supports your motherboard and your CPU. For example, I would be very wary of a power supply with a +12V rail for an AMD Athlon. It won't work.

You could also look into buying an off the shelf desktop case. I know that IKEA sells these as a standalone computer case that you can just pop the hard drives in. If they don't make such a model, it's always possible to make your own.

You'll need the case, the motherboard, the CPU, RAM and some power supply.

As for the power supply, you'll need some of these. I have two that came with my motherboard and they are rated at 100watts each.

This is actually a pretty good idea. I have a laptop (and I guess it's basically the same as a desktop except a bit smaller) and I bought an extended power supply for it. It gives you much more power than the one the laptop comes with. I imagine that you could get a power supply with a better efficiency rating for a little more money, but you might not really notice the difference.

John Cavan♦Dec 16 '09 at 0:07

You won't notice the difference. If you were buying a laptop that wasn't capable of running full-power (e.g., a 5-year-old laptop) you'd want a power supply with the most efficiency possible.

MikeDec 17 '09 at 21:07


Just make sure you have plenty of room to install RAM (you won't need 4GB). I wouldn't worry about the power supply, though. Just buy a nice one. I've had a few power supplies in the last few years that don't really do anything special and they all work fine for me.

John Cavan♦Dec 21 '09 at 0:10

It's possible to make a very large computer case and mount the motherboard, CPU, etc. inside.

I've done that, but I'm not sure how to answer your question, since you're asking about a different kind of computer.

A standard desktop case is smaller, and it takes the motherboard and CPU out of the equation. The power supply will take care of the power supply for the motherboard.

A standard desktop case is smaller, and it takes the motherboard and CPU out of the equation. The power supply will take care of the power supply for the motherboard.

Yes, but that's not what I asked.

GustavoDec 11 '10 at 1:26

@Gustavo: I know, but I thought you might want to know anyway. You could also make your own computer with a power supply in a normal desktop case.

Brent GoughDec 11 '10 at 2:01

@BrentGough: Yeah, but if you make your own, you can't ask any questions about whether the power supply can handle it, can you? :-)

GustavoDec 11 '10 at 2:20


The power supply part is the same, whether it's a standard desktop case or a modular case, or if it's a standalone power supply, or if it's an external power supply, or if it's an internal power supply in the case (the motherboard, etc.).

Brent GoughDec 11 '10 at 2:33

Thanks for your help! I think that the modular case is a good idea. I have a lot of experience with computers in general, but I never used a case with the modular system before. That way I'll know for sure that everything will fit.

CristianJul 30 '11 at 22:40

The power supply should be a standard desktop power supply, no question about it. If you look on the back of the computer you should see something like this:

Then it should be something like this:

That's the most common type of power supply for desktop computers.

MikeDec 17 '09 at 21:10

@Mike: It depends on the motherboard. I know that the motherboard I have doesn't need it, but the motherboard that I'm buying does.

CristianJul 30 '11 at 22:42


@Mike: I was actually referring to the type of power supply, not the type of motherboard. And my understanding was that this type of power supply is more efficient

Watch the video: Piecing The CAT 3406B Back Together and Starting It Up (January 2023).