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Is my Antec HCG 620 watts enough?

post #1 of 12
Thread Starter 
I want to add a GTX 590 with my current sig. system

Would my Antec HCG 620 watts enough? I been reading around, and many people says different things. Some says 750 watts and some says as low as 550 watts, several are in the middle at 650 watts. With these numbers based on a i7-2600k cpu + GTX 590.

Antec Calculator rates this system at 580 watts 90% load power needed. I don't think I ever going reach 100% load ... nor even 90% ...

One review I read that the 12V rail at peak power gives 616 watts.

Thoughts?
Edited by mcc21 - 6/20/11 at 8:00pm
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post #2 of 12
Run through this and decide for yourself.
http://www.overclock.net/power-suppl...alculator.html
post #3 of 12
Thread Starter 
Quote:
Originally Posted by Phaedrus2129 View Post
Run through this and decide for yourself.
http://www.overclock.net/power-suppl...alculator.html
GTX 590 = 550 watts (based on moderate OC of GPU, but I don't even plan to OC GPU)
SB i5/i7 OC = -25 watts (based on a 50% OC, as mine is only 35% OC, so it should be minus more than 25 watts)

According to that my system is using 525 watts only. My psu should be enough, as that thread states that those numbers suggested is based on "This is plenty of headroom. Your PSU will not wear out."

Plus my psu is a 'OCN recommended psu" =)
Edited by mcc21 - 6/20/11 at 8:24pm
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post #4 of 12
I guess you'll be getting rid of the 6870s right? If so you'll be perfectly fine, go for it with glee.
post #5 of 12
Thread Starter 
Quote:
Originally Posted by Shub View Post
I guess you'll be getting rid of the 6870s right? If so you'll be perfectly fine, go for it with glee.
Yes I plan to get rid of them, and then help pay for a GTX 590.

Quick question, howcome there are such a shortage of GTX 590s? Is Nvidia cutting them out or they are so hot that everyone buying them?
MCC
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MCC
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Samsung 840 120 gb SSD Samsung Noctua NH-D14 Windows 7 Ultimate 
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post #6 of 12
Thread Starter 
Wow according to that calculator, my current set up is pulling 625 watts ... and I am fine with no hiccups what so ever =)
MCC
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Samsung 840 120 gb SSD Samsung Noctua NH-D14 Windows 7 Ultimate 
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MCC
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Hard DriveOptical DriveCoolingOS
Samsung 840 120 gb SSD Samsung Noctua NH-D14 Windows 7 Ultimate 
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post #7 of 12
Sandy Bridge is MINUS 25W.
post #8 of 12
Thread Starter 
Quote:
Originally Posted by Phaedrus2129 View Post
Sandy Bridge is MINUS 25W.
haha yes i included that and edit my post...

so i be only drawing 525 watts... so i should be safe with the Antec 620 correct because according to your instructions.. my CF 6870 + i5 is pulling 625 watts, and I been stress testing , gaming, and anything else on this computer with no shut down, even the psu fan been silent.
MCC
(15 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500k  Gigabyte GA-Z77X-UD5H MSI GTX 680 Lightning Ed. Patriot Intel Extreme Masters Limited Edition 
Hard DriveOptical DriveCoolingOS
Samsung 840 120 gb SSD Samsung Noctua NH-D14 Windows 7 Ultimate 
MonitorKeyboardPowerCase
Samsung SyncMaster S27A850D  CM Storm Quick Fire  Corsair AX850 Fractal Design Define R4 
MouseAudio
Steelseries Sensei Creative T20 
  hide details  
Reply
MCC
(15 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500k  Gigabyte GA-Z77X-UD5H MSI GTX 680 Lightning Ed. Patriot Intel Extreme Masters Limited Edition 
Hard DriveOptical DriveCoolingOS
Samsung 840 120 gb SSD Samsung Noctua NH-D14 Windows 7 Ultimate 
MonitorKeyboardPowerCase
Samsung SyncMaster S27A850D  CM Storm Quick Fire  Corsair AX850 Fractal Design Define R4 
MouseAudio
Steelseries Sensei Creative T20 
  hide details  
Reply
post #9 of 12
Your current system isn't pulling 625W; 625W is just a good PSU wattage for you to be at. You're pulling about 550W when stress testing and maybe 350-500W when gaming.
post #10 of 12
That rough estimate is not an estimate of power consumption but rather of the PSU you will need, with headroom included and room for more overclocking, fans, and hard drives than you may actually use. Also there are considerations like a i5-2500k using less power than a i7-2600k obviously yet both are given the same rating by the quick-and-dirty calculator.
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