From GTX 770 2GB to 980Ti 6GB - upgrade 650W PSU?

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DreamFloyd

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Jul 23, 2013
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Bear with me, I have read my share of threads on this topic for the most part of the morning now, and this may just serve as some further affirmation on my stance of purchasing a new PSU (though if you would advise against it it would save me money). You guys helped me build this computer so I'd thought I'd reach out to the community once again.

Today I'm going to go pick up a MSI 980Ti 6GB, upgrading my MSI 770 2GB that I have been using for around 2 years now on a daily basis. The PSU I have been using has seen similar use (8+ hours a day over 2 years), and is the model found below:

http://www.ncix.com/detail/xfx-650w-ts-series-core-9c-59616-1241.htm

Now I'm asking if I you think it is wise to upgrade to something like 750W—or even replace with a newer and better 650W—if I want to OC this new card pretty heavily. I have had my eyes on :

http://www.ncix.com/detail/evga-supernova-750-g2-80-f0-94405.htm

which seems like a highly regarded PSU.

I've tried inputting my specs into eXtreme Power Supply Calculator but I've also read about the inaccuracies of the calculation (it also had recommended 700W when I toggled the slider for my future 980Ti core clock to 1400Mhz).

My specs:

i5-4670k @ 4.0 GHz
MSI 980Ti 6GB
MSI Z87-G45 mobo
Hyper 212 Evo
16GB DDR3 1600MHz RAM
120GB SSD
1TB 7200RPM internal HDD
1TB external HDD
5x120mm case fans
Optical drive

and peripherals (not sure it makes much of an impact):

Corsair K70 (with controller plugged into USB)
Deathadder 2013
Audio Technica ATH-AD900x


 
Solution
dudmont
Your origianl PSU is a tier 2. A perfectly safe unit and safe to over clock with. If you overclock, I would recommend something like a 20% extra power margin. Meaning, you have 20% more than the system would need if it wasn't overclocked. If you have punched your hardware in and it says you need 500 watts, then 20% of that is 100 more, so I would recommend 600 watts, to be safe, or whatever is needed for your particular system.
That psu you're looking at is a tier 1 with a big long warranty. I have several evga supernova psus and couldn't recommend them enough. The current unit should last you a few more years without trouble. That being said, you're going to have the whole system apart, some might call that a good time to...
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dudmont

dudmont

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Your origianl PSU is a tier 2. A perfectly safe unit and safe to over clock with. If you overclock, I would recommend something like a 20% extra power margin. Meaning, you have 20% more than the system would need if it wasn't overclocked. If you have punched your hardware in and it says you need 500 watts, then 20% of that is 100 more, so I would recommend 600 watts, to be safe, or whatever is needed for your particular system.
That psu you're looking at is a tier 1 with a big long warranty. I have several evga supernova psus and couldn't recommend them enough. The current unit should last you a few more years without trouble. That being said, you're going to have the whole system apart, some might call that a good time to make any changes you're thinking of doing.
 
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DreamFloyd

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Jul 23, 2013
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Yes this is my feeling too. I never had any trouble with hardware malfunction (except that one time way back when with an old Radeon HD 4670), but I would like to be more safe about my decisions now. Thanks for your input.

 
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DreamFloyd

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Jul 23, 2013
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Yes that definitely got me thinking about what else I could change before I head to NCIX later today. Thanks!
 
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DreamFloyd

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Jul 23, 2013
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Thanks again blackbird. I remember your replies to my threads 2 years ago. I will actually probably hold off for now, while I consider any more changes I want to do with my system.
 
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