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Stay with the old or try out the new?

post #1 of 7
10/17/12 at 4:17pm
Thread Starter 
In my LGA2011 build, I'm currently running an Antec HCG 750W power supply. I'm adding a second GTX550 ti to this build and from all the calculations (with the online calculators) I've done, show that I am very close to maxing out this PSU. The calculator is showing 727W of 750w used once I install the second card bigeyedsmiley.png. My other rig has a Thermaltake 850W TR2 RX in it, I would love to switch it and in the process also get some fancy sleeved cables for it, but I am leary because of the bad reviews for their other powersupply (750W). All the research I have been able to do shows that the 850 doesn't suffer from the problems of the 750, but considering the investment of everything else, it kinda freaks me out. I was able to find out that the Cougar 850 Modular PS is the same as the Thermaltake. I don't know if bronze certification means anything but the Thermaltake is Bronze certified.

Would I be better off running the system the way it is with the Antec, running at near 100%? Or switching to the 850W?
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I7 950 Asus Sabertooth X58 5700 X2 in crossfire 12GB 1600 DRamm 
Hard DriveOptical DriveOSMonitor
Hitachi Sata2 7200rpm 1 TBY Unknown... Sata win 7 2x 25" 1920x1080 
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usb. logitch 850 watt usb...logitech 
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i7 3930K Asus Rampage IV Gene GTX 550 Ti Corsair Dominator 
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Optical DriveCoolingOSMonitor
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I-INC 24" 1920x1080 Antec HCG 750W Nzxt Phantom 
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post #2 of 7
10/17/12 at 4:24pm
Im sorry but 2 550 ti are not going to push a 750 watt power supply.

ive had 4 460 on a 750 watt and was pulling 720 at the wall full loading with 4 x 460 folding and the cpu folding as well.
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post #3 of 7
10/17/12 at 4:29pm
Quote:
Originally Posted by Apfelbaum51 View Post

In my LGA2011 build, I'm currently running an Antec HCG 750W power supply. I'm adding a second GTX550 ti to this build and from all the calculations (with the online calculators) I've done, show that I am very close to maxing out this PSU. The calculator is showing 727W of 750w used once I install the second card bigeyedsmiley.png. My other rig has a Thermaltake 850W TR2 RX in it, I would love to switch it and in the process also get some fancy sleeved cables for it, but I am leary because of the bad reviews for their other powersupply (750W). All the research I have been able to do shows that the 850 doesn't suffer from the problems of the 750, but considering the investment of everything else, it kinda freaks me out. I was able to find out that the Cougar 850 Modular PS is the same as the Thermaltake. I don't know if bronze certification means anything but the Thermaltake is Bronze certified.
Would I be better off running the system the way it is with the Antec, running at near 100%? Or switching to the 850W?

 

The calculator is extremely wrong somehow (although, it's easy to make them be extremely wrong).  The 750W HCG even has enough power for your system if it had two GTX 580s in it:

 

http://www.guru3d.com/articles_pages/geforce_gtx_580_sli_review,14.html

 

With two GTX 580s under full load, their test system caused their power supply to pull 719W from the wall outlet.  The CPU was idling, so we should add about 150W.  That makes the PSU pulling about 869W from the wall outlet.  If their PSU is 85% efficient while pulling 869W from the wall, then that would mean the system is pulling 738W from the PSU.

 

I didn't look hard enough for a GTX 550 Ti SLI review, but I had this link handy so there.  :)

 

Which PSU calculator did you use?

It's like advanced alien technology! :)
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CPUMotherboardGraphicsRAM
i5-2500K @ 4.7GHz (1.368V using +0.005 offset) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 580 (ASUS DirectCU II) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
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It's like advanced alien technology! :)
(18 items)
  		  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.7GHz (1.368V using +0.005 offset) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 580 (ASUS DirectCU II) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
60 GB Callisto Deluxe (C:) 64 GB G.SKILL Falcon (D:) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Samsung 2253BW (1680 x 1050) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (the older, bronze-rated model) CM 690 Microsoft Intellimouse Optical Basic, but premium round 
AudioOther
XtremeGamer (low-profile PCB) Altec Lansing VS4121 (2.1 speaker system) 
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post #4 of 7
10/17/12 at 4:43pm
Thread Starter 
Thanks guys, that's why I come here.

I used this one:
http://www.extreme.outervision.com/psucalculatorlite.jsp

I also tried the one at Newegg, which was close, but didn't include all the fans I have (total of six running of the PS and 3 off the mobo).

Now if I could just stand not messing with this rig for a while..... Too much cool stuff on this group that keeps me wanting to keep messing with it.biggrin.gif
Win 7
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Edit workstation
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CPUMotherboardGraphicsRAM
I7 950 Asus Sabertooth X58 5700 X2 in crossfire 12GB 1600 DRamm 
Hard DriveOptical DriveOSMonitor
Hitachi Sata2 7200rpm 1 TBY Unknown... Sata win 7 2x 25" 1920x1080 
KeyboardPowerMouse
usb. logitch 850 watt usb...logitech 
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CPUMotherboardGraphicsRAM
i7 3930K Asus Rampage IV Gene GTX 550 Ti Corsair Dominator 
Hard DriveHard DriveHard DriveHard Drive
Samsung 830 Series SSD WD Caviar Black WD Caviar Black Seagate Barracuda 
Optical DriveCoolingOSMonitor
Samsung Super Write Master XSPC Raystorm RS240 kit Windows 7 64 I-INC 24" 1920x1080 
MonitorPowerCase
I-INC 24" 1920x1080 Antec HCG 750W Nzxt Phantom 
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Win 7
(13 items)
 
Edit workstation
(15 items)
  		 
CPUMotherboardGraphicsRAM
I7 950 Asus Sabertooth X58 5700 X2 in crossfire 12GB 1600 DRamm 
Hard DriveOptical DriveOSMonitor
Hitachi Sata2 7200rpm 1 TBY Unknown... Sata win 7 2x 25" 1920x1080 
KeyboardPowerMouse
usb. logitch 850 watt usb...logitech 
View all
CPUMotherboardGraphicsRAM
i7 3930K Asus Rampage IV Gene GTX 550 Ti Corsair Dominator 
Hard DriveHard DriveHard DriveHard Drive
Samsung 830 Series SSD WD Caviar Black WD Caviar Black Seagate Barracuda 
Optical DriveCoolingOSMonitor
Samsung Super Write Master XSPC Raystorm RS240 kit Windows 7 64 I-INC 24" 1920x1080 
MonitorPowerCase
I-INC 24" 1920x1080 Antec HCG 750W Nzxt Phantom 
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post #5 of 7
10/17/12 at 4:47pm
Keep your dust free keep it fully aired and you shouldn't have issue for a long while
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post #6 of 7
10/17/12 at 5:06pm
Thread Starter 
Ahh, the dust, that's an entirely different thing...thumb.gif
Win 7
(13 items)
 
Edit workstation
(15 items)
  		 
CPUMotherboardGraphicsRAM
I7 950 Asus Sabertooth X58 5700 X2 in crossfire 12GB 1600 DRamm 
Hard DriveOptical DriveOSMonitor
Hitachi Sata2 7200rpm 1 TBY Unknown... Sata win 7 2x 25" 1920x1080 
KeyboardPowerMouse
usb. logitch 850 watt usb...logitech 
View all
CPUMotherboardGraphicsRAM
i7 3930K Asus Rampage IV Gene GTX 550 Ti Corsair Dominator 
Hard DriveHard DriveHard DriveHard Drive
Samsung 830 Series SSD WD Caviar Black WD Caviar Black Seagate Barracuda 
Optical DriveCoolingOSMonitor
Samsung Super Write Master XSPC Raystorm RS240 kit Windows 7 64 I-INC 24" 1920x1080 
MonitorPowerCase
I-INC 24" 1920x1080 Antec HCG 750W Nzxt Phantom 
View all
  hide details  
Reply
Win 7
(13 items)
 
Edit workstation
(15 items)
  		 
CPUMotherboardGraphicsRAM
I7 950 Asus Sabertooth X58 5700 X2 in crossfire 12GB 1600 DRamm 
Hard DriveOptical DriveOSMonitor
Hitachi Sata2 7200rpm 1 TBY Unknown... Sata win 7 2x 25" 1920x1080 
KeyboardPowerMouse
usb. logitch 850 watt usb...logitech 
View all
CPUMotherboardGraphicsRAM
i7 3930K Asus Rampage IV Gene GTX 550 Ti Corsair Dominator 
Hard DriveHard DriveHard DriveHard Drive
Samsung 830 Series SSD WD Caviar Black WD Caviar Black Seagate Barracuda 
Optical DriveCoolingOSMonitor
Samsung Super Write Master XSPC Raystorm RS240 kit Windows 7 64 I-INC 24" 1920x1080 
MonitorPowerCase
I-INC 24" 1920x1080 Antec HCG 750W Nzxt Phantom 
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  hide details  
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post #7 of 7
10/17/12 at 5:18pm
Quote:
Originally Posted by Apfelbaum51 View Post

Thanks guys, that's why I come here.
I used this one:
http://www.extreme.outervision.com/psucalculatorlite.jsp
I also tried the one at Newegg, which was close, but didn't include all the fans I have (total of six running of the PS and 3 off the mobo).
Now if I could just stand not messing with this rig for a while..... Too much cool stuff on this group that keeps me wanting to keep messing with it.biggrin.gif

 

You're welcome.

 

If you'd like to see what made this calculator so inaccurate, then I can show you.  All you would have to do is run the calculator again, but this time click the calculator's built-in Print button.  After that, upload a screenshot of the page that you get from it (the printable page of the calculator's results).

 

I usually recommend that no one use these calculators and instead just come to Overclock.net.  :)

It's like advanced alien technology! :)
(18 items)
  		  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.7GHz (1.368V using +0.005 offset) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 580 (ASUS DirectCU II) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
60 GB Callisto Deluxe (C:) 64 GB G.SKILL Falcon (D:) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Samsung 2253BW (1680 x 1050) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (the older, bronze-rated model) CM 690 Microsoft Intellimouse Optical Basic, but premium round 
AudioOther
XtremeGamer (low-profile PCB) Altec Lansing VS4121 (2.1 speaker system) 
View all
  hide details  
Reply
It's like advanced alien technology! :)
(18 items)
  		  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.7GHz (1.368V using +0.005 offset) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 580 (ASUS DirectCU II) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
60 GB Callisto Deluxe (C:) 64 GB G.SKILL Falcon (D:) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Samsung 2253BW (1680 x 1050) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (the older, bronze-rated model) CM 690 Microsoft Intellimouse Optical Basic, but premium round 
AudioOther
XtremeGamer (low-profile PCB) Altec Lansing VS4121 (2.1 speaker system) 
View all
  hide details  
Reply
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