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Is 650 watt power supply enough for an i7 processor and an nvidia card

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March 8, 2012 12:52:22 AM

So, I just got an HP Phoenix with a second gen i7 2600 and an Nvidia 550 ti card with a 1TB hard drive. Will a 600 watt power supply be good enough or should I go with a 650-700 watt power supply? I'm not sure how to calculate how much amps will be used. I'm not very big into computers but I want to make sure the power supply doesn't die on me when I get it. Thank you!
a b ) Power supply
March 8, 2012 1:02:31 AM

If you have no intention of running SLI in the future (2 Video Cards) then 600 is enough.

I run a Quad-core and that same Card on a 550 watt PSU. However do not be temped to cheap out on a power supply.. i burnt out three $39.99 Logisys 480 watt PSU's from my local Radio Slack before i got smart and purchased a good one. I could have had a Top of the line unit for that wasted money.

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March 8, 2012 1:03:23 AM

i think you should the good if you running 550ti card
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March 8, 2012 1:07:34 AM

No, I just want to run the 550 ti, nothing else. I have a 650 Watt Cooler Master GX in my old computer I was thinking about swapping out. That power supply has done me very well so far, I also burned out several power supplies. Had to buy an UPS and the bigger power supply before I learned my lesson. So youi think buying a 700 watt would be unnecessary?
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March 8, 2012 1:08:32 AM

I also have 12 gb of ram included, does that make a difference?
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a b ) Power supply
March 8, 2012 1:09:31 AM

You are fine with a good 500w power supply.
http://extreme.outervision.com/psucalculatorlite.jsp
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Both of these will work fine, only difference is that the 600w is actually cheaper as of now.

Ram makes little if any difference it is mostly the GPU but also the CPU if you overclock.

I wouldn't use a Cooler Master PSU, I only look at these brands. Antec, PC Power & Cooling, XFX, OCZ, SeaSonic and Corsair (in no specific order, any depending on price).
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a b ) Power supply
March 8, 2012 1:11:33 AM

That Cooler Master one you already have should be plenty strong, Like i said i have a 550 watt with that same GPU and a overclocked CPU and I have extra fans and a Cold Cathode light kit on mine and it is over a year old now running well
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March 8, 2012 1:14:10 AM

I don't know how to overclock, this is kind of new to me so all of these answers are very useful to me. :)  I will just switch the 600 watt for the Cooler Master 650 watt and I should be fine I think. You guys are great! Wish I had someone to teach me about computers, it's such a guy thing and no one is willing to teach a girl it seems around here. ;p
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a c 274 ) Power supply
March 8, 2012 1:17:29 AM

blznhot18 said:
So, I just got an HP Phoenix with a second gen i7 2600 and an Nvidia 550 ti card with a 1TB hard drive. Will a 600 watt power supply be good enough or should I go with a 650-700 watt power supply? I'm not sure how to calculate how much amps will be used. I'm not very big into computers but I want to make sure the power supply doesn't die on me when I get it. Thank you!

A quality 450W unit will run your specs.
The GX650 is not the best unit around but would be sufficient for your current specs.
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March 8, 2012 1:19:33 AM

davcon said:
A quality 450W unit will run your specs.
The GX650 is not the best unit around but would be sufficient for your current specs.


What power supply would you suggest? I see Antec and Corsair a lot but when I see Corsair, the price is kind of expensive.
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a c 274 ) Power supply
March 8, 2012 1:22:37 AM

blznhot18 said:
What power supply would you suggest? I see Antec and Corsair a lot but when I see Corsair, the price is kind of expensive.

What's your max budget?
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March 8, 2012 1:24:24 AM

Not over $150.00 ideally. :) 
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a c 274 ) Power supply
March 8, 2012 1:31:28 AM

blznhot18 said:
Not over $150.00 ideally. :) 

Why do you want to change out the 600W psu on a new pc?
Better quality?
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March 8, 2012 1:33:19 AM

davcon said:
Why do you want to change out the 600W psu on a new pc?
Better quality?



Ummm, it's coming directly from HP and I'm scared to death that it's going to short out because of the i7 proc along with the Nvidia graphics card, 1TB hard drive, and the blu-ray drive (which also can burn DVDs not blu-rays).

Basically, I'm scared I've over loaded it already and that their 600 watt power supply isn't going to be sufficient enough.
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a c 274 ) Power supply
March 8, 2012 1:52:00 AM

Pretty sure they have quality control and a warranty backing the unit.
Especially since that particular model has been heavily marketed.
I have 10+yr old pre-builts from Dell that still work.
Seriously doubt HP would release a sub-par psu in a gaming build.
They're listing a GTX580 with the same psu.
http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en...
The recommended psu wattage for a system with a GTX550ti is 400W btw.
http://www.geforce.com/Hardware/GPUs/geforce-gtx-550ti/...
I wouldn't worry about it.
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March 8, 2012 1:57:28 AM

davcon said:
Pretty sure they have quality control and a warranty backing the unit.
Especially since that particular model has been heavily marketed.
I have 10+yr old pre-builts from Dell that still work.
Seriously doubt HP would release a sub-par psu in a gaming build.
They're listing a GTX580 with the same psu.
http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en...
The recommended psu wattage for a system with a GTX550ti is 400W btw.
http://www.geforce.com/Hardware/GPUs/geforce-gtx-550ti/...
I wouldn't worry about it.


Wow, that's a big graphics card. Well, I did have a bad experience about five years ago where they sent me a pavillion desktop with a 400 watt power supply when the Nvidia 8800 GTS was in it. That also had the Intel core 2 duo proc and that power supply didn't last very long. This is why I'm weary of whatever power supply they send me, but it is a gaming PC so..I'm just nervous I guess.
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May 1, 2012 4:52:06 AM

blznhot18

You will have no problems running the GTX 550 Ti with the stock 600 watt PSU from HP. Although it won't really hurt anything if you know how to change it out, you really don't need to switch PSUs. HP uses Delta for those units, and they are not too bad at all. I wouldn't take one over a Corsair or Antec PSU, but they are decent and can easily handle anything you want to add to that rig, like a TV Tuner card or more RAM. 600 watts is plenty. It's just as good as the CoolerMaster you have (which are only so-so).

I too have a brand new HP Phoenix rig with the i7 2600. I immediately swapped out the GTX 550 Ti card for a overclocked XFX Radeon HD 6950 card that I already had. I have been running it for three weeks now without a single glitch or hiccup. And I have 16GB of RAM, a 2TB HDD, Blu-ray player and the liquid cooling (I did not get the SSD, but I will be adding one later myself).

Again, you don't need to replace that PSU, but since you asked and you sound like you want to- here's my recommendation for a good quality PSU for the Phoenix- its a fantastic unit from Corsair:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

And you cannot overclock your rig. Although yes, it certainly possible (but quite difficult), HP did not give you any options in this BIOS to change the multiplier, plus the i7 2600 is not a unlocked part. That would be his cousin, the i7 2600k of course.

By the way, I hope you are enjoying your computer. My Phoenix is awesome, and superfast!!! I got a great buy for about a $1000 through my work, and I haven't regretted it at all. I almost bought a similarly configured Alienware which was a lot more $. Glad I picked the HP. This things runs cool and is quiet as a mouse. I'm getting 70+ FPS on BF3 with everything on Ultra and 4xAA, and the Ambient Occlusion setting turned on. It's a really decent gaming rig for a prebuilt.
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a b ) Power supply
May 1, 2012 5:01:53 AM

blznhot18 said:
Basically, I'm scared I've over loaded it already and that their 600 watt power supply isn't going to be sufficient enough.

Even high-end single-GPU builds rarely break 400W measured at the wall, which means ~320W PSU load assuming 80% efficiency. If the 600W PSU is of reasonably good quality, it should be more than enough.
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