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Psu Question, Pls help :)

post #1 of 13
Thread Starter 
Hi guys i recently built myself i new system around an i5 2500k, the parts are:

i5 2500k 4.5ghz stable ( dont mind going back to stock)
4gb corsair vengeance lp ram 1600mhz
msi p67 gd53 motherboard
OCZ ZS Series 650W '80 Plus Bronze' Power Supply
MSI R6870 Hawk GPU 1gb
2 case fans
And 2 cpu cooler fans (akasa viper blade fans)
500gb hdd
dvd/rw

The system is running fine but my question is, i am looking to put another r6870 in, and im worried that my ocz 650 wont be adequate for another 6870.

I dont mind putting the i5 back to stock to lower voltage.

Do you guys think i would be able to run another 6870? with this psu?

I also dont know much about ocz psu's and dont hear about them often.

Thanks alot for your help.

Doilus.
post #2 of 13
650Watt is more than enough for Xfire.
^3
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^3
(11 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core i7 5930K  EVGA x99 Micro EVGA GTX 980 SC ACX 16GB Corsair DDR4 Vengeance LPX Black PC4-21300 
Hard DriveCoolingOSMonitor
500GB Samsung 840 EVO H105 Win 10 ASUS ROG PG279 
KeyboardPowerCase
Ducky Shine 1 MX-Red Corsair AX 860i  Fractal Design Node 804 Black 
CPUGraphicsRAMHard Drive
Core i7 @ 2.6  GT650 16GB of 1600 MHz DDR3L SDRAM 256GB SSD 
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Mac OSX Lion Retina Display US layout 
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post #3 of 13
Hello...Welcome to OCN

A quick answer...yes.

Getting that second 6870 shouldn't be a problem with your setup. As long OCZ didn't take any shortcuts with that power supply...you should have enough headroom for any overclocking you want to keep or push even further.

Some additional info...keep in mind that you can also look into a strong single video card solution as well. However, looking to Crossfire or SLI more powerful video cards will require you to upgrade into a stronger power supply.
愛(Ai)
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Sans Digital TR8UT+B Enclosure 8x500GB (RAID-50) Sans Digital TR8UT+B Enclosure 8x1TB (RAID-50) LG WH16NS40 Blu-Ray Burner Swiftech Apogee Drive II 
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Swiftech MCR320 10x Sanyo Denki 9SG1212G101 (260CFM) 3x Sanyo Denki 9G1212G401 (130CFM) Windows 7 Ultimate 64bit 
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愛(Ai)
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RAMHard DriveHard DriveHard Drive
Corsair Dominator GT 6x4GB (24GB) Samsung 850 PRO 2TB 4x Seagate Barracuda XT 2TB (RAID-5) 6x Seagate Barracuda XT 3TB (RAID-6) 
Hard DriveHard DriveOptical DriveCooling
Sans Digital TR8UT+B Enclosure 8x500GB (RAID-50) Sans Digital TR8UT+B Enclosure 8x1TB (RAID-50) LG WH16NS40 Blu-Ray Burner Swiftech Apogee Drive II 
CoolingCoolingCoolingOS
Swiftech MCR320 10x Sanyo Denki 9SG1212G101 (260CFM) 3x Sanyo Denki 9G1212G401 (130CFM) Windows 7 Ultimate 64bit 
MonitorMonitorKeyboardPower
3x Yamakasi Catleap 2703 IPS 27" 2560x1440 Sony KDL50W800C 50" Smart 3D LED HDTV Logitech G710+ Mechanical Keyboard Brown Switches EVGA SuperNOVA NEX1500 Classified 
CaseMouseMouse PadAudio
Cooler Master ATCS 840 (Modded) Logitech G700s Rechargeable Gaming Mouse XTracPads Ripper XXL Desktop Gaming Mat HT Omega Claro Plus+ 7.1 
AudioAudioAudioAudio
Logitech Z-5500 5.1 Digital Speaker System Sony HTST9 7.1 Sound Bar Beyerdynamic A20 Headphone Amplifier Beyerdynamic DT 770 Pro 250 ohm Headphones 
AudioAudioOtherOther
Beyerdynamic Premium Tesla Hi-Fi T70 Headphones Blue Yeti Pro Microphone Elgato Game Capture HD60 Pro Areca ARC-1260 RAID Controller Card 
OtherOtherOtherOther
2x Lamptron FC-2 Fan Controller Lian Li EX-H34B Hot Swap Cage CyberPower CP1500PFCLCD UPS D-Link Amplifi Cloud Router 5700 
OtherOtherOther
Logitech HD Pro Webcam C910 AmazonBasics 7 Port USB 2.0 Hub Saitek ST290 Pro Joystick 
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post #4 of 13
na your fine for another 6870 its a good psu

here is a review

http://www.hardwaresecrets.com/artic...ly-Review/1361
Ultra mega
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Ultra mega
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The brain of Leonardo da Vinci the skill of Michelangelo  The passion of Enzo Ferrari  Fort Knox 
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Hubble telescope Bio organic dark matter when you see it you'll know the irl eyes 
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post #5 of 13
Thread Starter 
Thanks for the welcome .

U sure?? I dont wana fork out another 150 for it and it not work .

I also have another question, my current 6870 has 2 6 pin connectors that power it and my psu only had 2 of these. So if I was to crossfire how would I power the 2nd card?

Thx again
post #6 of 13
Yes, you're fine. 6870 is not a power hungry card.


You need molex->PCIe adapters or PCIe splitters to use the second card. Those are dirt cheap.
post #7 of 13
Thread Starter 
Thanks alot guys
post #8 of 13
Thread Starter 
Actually I forgot to mention they are the r6870 hawk cards with the twin frozr fans, will this make a difference?

The reason I post is because on threads about the 6870 power consumption they all seem to say that they use about 300w under load, which means in crossfire that would be 600w alone? Or am I wrong? If they are that only leaves 50w lol.

Sorry I really am a newbie
post #9 of 13
No it will not make a difference. They're the same dame thing with slightly different clocks.
post #10 of 13
Thread Starter 
Thank you
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