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How about a compromise? Get a SeaSonic or Corsair 650 Watt 80+ Bronze or better power supply. 650 watts isn't THAT much overkill, it is a popular size so you can get one at a great price, and if you want to OC or change your system configuration, you have the extra headroom.

Gary said:

That is what is posted in Forums--Opinions--Like it or not. I did not BTW make fun of Overclocking Forums. You right I have two degrees in Electronics and have worked for EDS, AT&T, Lucent and Avaya. I also worked a great deal with their power systems, the kind that take up a small room. I also was certified as a power technician. So do not put me down as you have no idea who you are dealing with. There are rules here, I suggest you follow them. I will not ever be responding to any of your posts./

First, you're not a moderator, so please don't tell me to follow the rules. You will never catch me telling someone to follow the rules because like you, I'm not a moderator.

Anyway, it doesn't matter to me if you respond to my posts. All that matters is that GarySawyers (the Thread Starter) receives the help he came here for. No, that does not mean that we should recommend a quality-made 750W power supply to power a system that only has two 670s and an i7-970 at stock. Good grief. A quality-made 550W is more than enough for that. No, it would not run hot, it would not be loud, and it would not have a short life. If you think that it would run hot, loud, and have a short life, then you don't know as much about PSUs as you think. We're not talking about wimpy 550W power supplies here!

I apologize for being that blunt, but I feel like I don't really have a choice at this point because no one is really listening.

Here, I'll do you one better than asking you to talk to the PSU experts on Overclock.net. Ask Jonny Gerow ("Jonny Guru") or Oklahoma Wolf over on JonnyGuru.com. Ask them what they would recommend to power a system that has two GTX 670s and an i7-970 in it - both at stock. Tell them that you think a 750W is the best recommendation and tell them why you think that. These people are the experts of experts on power supplies, so they will set you straight. If you talk to them, tell them that this is a "pre-built" (it's an Alienware system), so I sincerely doubt he will be doing any overclocking!

From JohnnyGuru's website:

Power Supply Basics:

Is there such a thing as "too much power"?

Generally, no. A power supply only puts out as much power as needed by the system's components. In some cases, an 800W power supply may actually use less power from the wall than a 500W power supply, depending on the efficiency of the units. Often times, buying an "oversized" PSU is a good choice due to it's ability to perform even under higher temperatures, a quieter fan because the unit is delivering a lower percentage of it's total capability and considerable system upgradability without having to worry about having enough power when upgrading a graphics card, adding a graphics card for SLI or additional hard drives.

Now....we've already had one trainwreck of a thread over this same issue, there is no need for another. Very rarely does a thread like this start and the OP is given BAD information. Most of us chime in with the exact same advice: Corsair/SeaSonic/Antec and a power rating to sufficiently power the system in question. Now I know none of us go through the trouble to find out exactly to-the-watt what the system needs, but I also know any of the PSU's we recommend will get the job done in spades.

TwoCables, if you want to do the math and come up with your suggestion for a power supply, do that. There is no reason to provide any references or any reasons beyond...."this system needs X amount of watts, here is my recommendation". Quit being butthurt when someone doesn't agree with you for whatever reason. You want to name drop....well, there is a quote above, directly from his website that backs up EVERYBODY that says it is better to have too much power, than not enough.

Gary, TwoCables does know what he is talking about, like it or not. You've made your recommendation, just like he has. The OP has enough info to make an informed decision, and if he has anymore questions he should feel free to ask away! If you don't want to reply to anymore posts by TwoCables....don't do it. I don't think it will bother him any.

Thx guy like all your input. Thx

can i install windows xp on my alienware that run windows 7 and it's a 64 bit

GarySawyers said:

can i install windows xp on my alienware that run windows 7 and it's a 64 bit

Hijacking your own thread?

You list your PC as having 16GB of RAM. To use more than 4GB, you'll need a 64 bit OS. There is a 64 bit version of Windows XP Professional, but it was never made available at retail. (That freed Microsoft from supporting it. All support had to be through the PC maker.)

Unless Alienware/Dell supports XP64 on your system, you'd be on your own as regards finding compatible drivers.

Extended support for 32 bit XP dies in April of 2014. I don't know about XP 64.

So: if it's possible, it seems like a bad idea.

Are you aware of XP mode?

Download Windows XP Mode

I believe that it's free with Windows 7 Professional or Ultimate. It is a real copy of XP running in a VM 9virtual machine) under Windows 7. It is intended to support programs too old to be installed under Windows 7.

I have window 7,but try to run some program that are xp ,but window 7 64 bit will not let it work. That why I ask , could I install xp on my pc so I can have two os on my pc.