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Enough to Handle System @ 4GHz?

post #1 of 7
Thread Starter 
As the title states, I'm wondering if my current power supply would be enough to handle my system if I were to overclock my processor towards the 4GHz range. Details are in signature (First Born).
post #2 of 7

It's way more than enough, actually.  It would still be enough even if you had a 7970 or a GTX 680.

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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
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Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #3 of 7
Yes the capstone is a very good PSU series and your 7770 can't be taking up too much of that.
You can guestimate your wattage with this formula:

original TDP x (OC Mhz/Stock MHz) x (OC voltage/Stock voltage) = OC TDP
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post #4 of 7
Thread Starter 
Quote:
Originally Posted by TwoCables View Post

It's way more than enough, actually.  It would still be enough even if you had a 7970 or a GTX 680.

Kinda figured it'd be fine, just wanted a second opinion. Good to know that it'll probably handle those cards too as I'm already looking to go towards the 7850. Thanks for the fast response.
post #5 of 7
Thread Starter 
Quote:
Originally Posted by Legonut View Post

Yes the capstone is a very good PSU series and your 7770 can't be taking up too much of that.
You can guestimate your wattage with this formula:

original TDP x (OC Mhz/Stock MHz) x (OC voltage/Stock voltage) = OC TDP

Thanks for the formula. Filled in a guestimate for the OC MHz and voltage and it's looking at around ~ 147 from 124, assuming I did it correctly.
post #6 of 7
Quote:
Originally Posted by CS14 View Post


Kinda figured it'd be fine, just wanted a second opinion. Good to know that it'll probably handle those cards too as I'm already looking to go towards the 7850. Thanks for the fast response.

 

It's major overkill for that.  ;)

 

http://www.guru3d.com/articles_pages/amd_radeon_hd_7850_and_7870_review,7.html

 

With one 7850 under full load in their system, their PSU pulled 256W from the wall outlet.  Their CPU was idling, so I'll add 150W for your CPU overclocked.  If the 7850 and your overclocked CPU were under full load at the same time, then that would make the PSU pull 406W from the wall outlet.  If the PSU is 85% efficient while pulling 406W from the wall outlet, then that would mean the system is pulling 345W from the PSU.  Again though, this is only if you manage to get the 7850 and your CPU under full load at the same time.  ;)

It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #7 of 7
Thread Starter 
Quote:
Originally Posted by TwoCables View Post

It's major overkill for that.  wink.gif

http://www.guru3d.com/articles_pages/amd_radeon_hd_7850_and_7870_review,7.html

With one 7850 under full load in their system, their PSU pulled 256W from the wall outlet.  Their CPU was idling, so I'll add 150W for your CPU overclocked.  If the 7850 and your overclocked CPU were under full load at the same time, then that would make the PSU pull 406W from the wall outlet.  If the PSU is 85% efficient while pulling 406W from the wall outlet, then that would mean the system is pulling 345W from the PSU.  Again though, this is only if you manage to get the 7850 and your CPU under full load at the same time.  wink.gif

I'm surprised at how little power it drew, really interesting.

I'm a bit more comfortable now overclocking with this PSU.

Only thing I'm worried about now is the VRMs/MOSFETS being able to handle the load (Supports up to a 140TDP with 4+1 phase, only going up to roughly 147 TDP). Might just throw a fan on them tongue.gif
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