Depends on your case. Any standard atx or micro atx case will work with a standard atx power supply. Some oem systems by dell and some older ones take a special size. If you want more help, list your system model number or case model number. Assuming you have a standard atx case, I recommend the corsair 750w for around $90 after rebate at newegg recently. If using a low end video card, then a 500w ps by antec or ocz might save you some money.
it,s cool. i just need a general type of power supply for the motherboard. i can talor the rest of the parts to fit the motherboard and which ever type of power supply i buy. ps: does anybody know how to upgrade the video memory on a dell latitude d600?
The answer to your original question is a modern atx power supply is compatible with a modern atx motherboard providing the power supply can deliver sufficient power to operate components.
The general rule of thumb is a high quality 500 to 550 watt power supply with sufficient current (amps) on the +12 volt rail(s) can easily power a system with any single video card made. A high quality 700 to 750 watt power supply with sufficient current (amps) on the +12 volt rail(s) can power a system with two video cards operating in dual mode. There are a few exceptions like the new ATI Radeon HD 5XXX series cards which use less power due to their energy efficiency.
A high quality 500 to 550 watt psu will have a +12 volt rail rated at 40 amps. A high quality 700 to 750 watt psu will have a +12 volt rail rated at 60 amps.
In addition the power supply should be at least 80+ Bronze certified for energy efficiency. There are some models available which have achieved 80+ Silver and 80+ Gold Certifications.
Before purchasing a new psu you will need to decide whether you will eventually have a pc with one or two video cards.
Corsair and Seasonic are two brands that have a reputation for high quality power supplies that consistently earn high marks in technical reviews. They are reliable, stable, and come with a 5 year warranty. Some of the newer models come with a 7 year warranty. Lately we've been seeing a few other brands offering some high quality units. One example would be the Antec Earthwatts series which is a major improvement over Antec’s older psu’s like the Basiq models.
Electro, try not to be so sensitive. RC wasn't trying to be a smartass. He's trying to teach you about the question you should have asked.
And you still have things sort of backwards.
Electro 121 said:
i can talor the rest of the parts to fit the motherboard and which ever type of power supply i buy.
You gather your parts, then you select the size of the power supply that you need to power those parts.
And even that's fairly simple:
Basic computer with built in graphics - good 400 watt PSU.
Basic computer with one graphics card - good 500 - 550 watt PSU.
Basic computer with two graphics cards - good 700 -750 watt PSU.
Those recommendations will cover probably 80 - 90% of all new builds, upgrades, and replacements.
Nothing happens. The power supply only draws the power that the system requires. If you have a 1000 watt power supply but your system only needs 300 watts to operate, then the psu will only draw 300 watts instead of the full 1000 watts.
The typical problem is just the opposite - a power supply that can't deliver sufficient power to a system. For example, a 350 watt power supply would not be able to power an overclocked high end system with mutiple video cards that requires a power draw of more than 350 watts to operate. That is the situation we usually see in this section of the forum.