Overclock.net › Forums › Components › Power Supplies › 760 Watt PSU for SLI 780s? HELP!
New Posts  All Forums:Forum Nav:

760 Watt PSU for SLI 780s? HELP!

post #1 of 8
Thread Starter 
Good afternoon.

I have a PC Power and Cooling Silencer 760W High Performance

I want to use it with 2 780's, however, my PSU has four 6pin PCI-E connectors (two 6-pin and two 6/2-pin)

I need to have four 8pin PCI-E connectors.

One 780 is currently attached to the 6/2pin connectors, and I have a 670 taking up the other two 6pin connectors.

I plan on taking the 670 out and replacing it with the second 780. Would it be possible to use my molex -> PCI-E adapters for the 2nd 780 since the other two 6pin PCI-E cables are useless?

Review wise it seems to be a great PSU so maybe it can handle that?


TweakTown Review
Quote:
The PPCS760 utilizes a single 12V rail that is rated for 62A of continuous power at full load. This should provide enough power for any system with a single GPU and will support almost any configuration of dual-GPU's out there. For power hungry systems with lots of drives and high end motherboard/CPU configurations, the PPCS760 also features heavy 3.3V and 5V rails that provide 24A and 30A respectively. Total continuous power of the Silencer 760W is 760W. PC Power & Cooling also lists the Silencer 760W as being capable to output 835W at its peak.

More info
PC Perspective

Maybe you all can find the info you need in those two reviews to best advise me. Thanks in advanced!
Main Rig
(13 items)
 
Secondary Rig
(15 items)
 
 
CPUMotherboardGraphicsGraphics
i7 3770k MSI Z77A-GD65 Gigabyte 780 OC Gigabyte 780 OC 
RAMHard DriveHard DriveOptical Drive
Ripjaw  Samsung F3  Samsung 830  Asus CD-Rom 
CoolingMonitorMonitorPower
Cooler master hyper 212+  Asus  27in 1440p Auria EQ276W 760 Watt Silencer 
Case
Haf 912 
CPUMotherboardGraphicsGraphics
i7 3770k ASRock Z77 Pro4-M 290 XFX DD R9 280X Gigabyte 
GraphicsGraphicsRAMHard Drive
R9 280X MSI Gaming R9 280X Power Cooler Crucial Ballistix  Samsung 830 series 
Hard DriveOptical DriveOSMonitor
WD Black Asus 24x Windows 7 Asus 24in  
MonitorPowerCase
27in 1440p Auria CM 750 600T 
  hide details  
Reply
Main Rig
(13 items)
 
Secondary Rig
(15 items)
 
 
CPUMotherboardGraphicsGraphics
i7 3770k MSI Z77A-GD65 Gigabyte 780 OC Gigabyte 780 OC 
RAMHard DriveHard DriveOptical Drive
Ripjaw  Samsung F3  Samsung 830  Asus CD-Rom 
CoolingMonitorMonitorPower
Cooler master hyper 212+  Asus  27in 1440p Auria EQ276W 760 Watt Silencer 
Case
Haf 912 
CPUMotherboardGraphicsGraphics
i7 3770k ASRock Z77 Pro4-M 290 XFX DD R9 280X Gigabyte 
GraphicsGraphicsRAMHard Drive
R9 280X MSI Gaming R9 280X Power Cooler Crucial Ballistix  Samsung 830 series 
Hard DriveOptical DriveOSMonitor
WD Black Asus 24x Windows 7 Asus 24in  
MonitorPowerCase
27in 1440p Auria CM 750 600T 
  hide details  
Reply
post #2 of 8
You could use the adapters for the other 780 card. It's nice to have a single 12v rail, makes it easy to just plug and play with the adapters. With multi rail power supplies, you'd have to plug in the adapter in an appropriate spot and not to overload that rail.
post #3 of 8
You can use adapters sure

Its just something you sould avoid if you can
Seravee
(24 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core I7 6850K Gigabyte X99 Ultra Gaming Gigabyte GTX 970 G1 Gaming Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD30EZRX  WD Green WD40EZRX  WD Green WD60EZRX  
Hard DriveOptical DriveCoolingCooling
WD Red WD80EFZX 8TB  LG CH12NS30 5x Noctua NF-A14 FLX Noctua NH-D15 
OSMonitorKeyboardPower
Windows 7 64 Bit Asus PG279Q Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt 
CaseMouseMouse PadAudio
Phanteks Enthoo Luxe Roccat Kone XTD Laser Roccat Sense Metor Sennheiser HD 598 
AudioAudioOtherOther
Onkyo TX NR646  Harman Kardon HKTS 60 CableMod E series PSU cable set CableMod LED Strips 
  hide details  
Reply
Seravee
(24 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core I7 6850K Gigabyte X99 Ultra Gaming Gigabyte GTX 970 G1 Gaming Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD30EZRX  WD Green WD40EZRX  WD Green WD60EZRX  
Hard DriveOptical DriveCoolingCooling
WD Red WD80EFZX 8TB  LG CH12NS30 5x Noctua NF-A14 FLX Noctua NH-D15 
OSMonitorKeyboardPower
Windows 7 64 Bit Asus PG279Q Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt 
CaseMouseMouse PadAudio
Phanteks Enthoo Luxe Roccat Kone XTD Laser Roccat Sense Metor Sennheiser HD 598 
AudioAudioOtherOther
Onkyo TX NR646  Harman Kardon HKTS 60 CableMod E series PSU cable set CableMod LED Strips 
  hide details  
Reply
post #4 of 8
Thread Starter 
Sweet that's good to hear smile.gif

If I OC'd much at all (1100mhz) would that still cause much of an issue?

Just not in the mood for buying another PSU frown.gif
Main Rig
(13 items)
 
Secondary Rig
(15 items)
 
 
CPUMotherboardGraphicsGraphics
i7 3770k MSI Z77A-GD65 Gigabyte 780 OC Gigabyte 780 OC 
RAMHard DriveHard DriveOptical Drive
Ripjaw  Samsung F3  Samsung 830  Asus CD-Rom 
CoolingMonitorMonitorPower
Cooler master hyper 212+  Asus  27in 1440p Auria EQ276W 760 Watt Silencer 
Case
Haf 912 
CPUMotherboardGraphicsGraphics
i7 3770k ASRock Z77 Pro4-M 290 XFX DD R9 280X Gigabyte 
GraphicsGraphicsRAMHard Drive
R9 280X MSI Gaming R9 280X Power Cooler Crucial Ballistix  Samsung 830 series 
Hard DriveOptical DriveOSMonitor
WD Black Asus 24x Windows 7 Asus 24in  
MonitorPowerCase
27in 1440p Auria CM 750 600T 
  hide details  
Reply
Main Rig
(13 items)
 
Secondary Rig
(15 items)
 
 
CPUMotherboardGraphicsGraphics
i7 3770k MSI Z77A-GD65 Gigabyte 780 OC Gigabyte 780 OC 
RAMHard DriveHard DriveOptical Drive
Ripjaw  Samsung F3  Samsung 830  Asus CD-Rom 
CoolingMonitorMonitorPower
Cooler master hyper 212+  Asus  27in 1440p Auria EQ276W 760 Watt Silencer 
Case
Haf 912 
CPUMotherboardGraphicsGraphics
i7 3770k ASRock Z77 Pro4-M 290 XFX DD R9 280X Gigabyte 
GraphicsGraphicsRAMHard Drive
R9 280X MSI Gaming R9 280X Power Cooler Crucial Ballistix  Samsung 830 series 
Hard DriveOptical DriveOSMonitor
WD Black Asus 24x Windows 7 Asus 24in  
MonitorPowerCase
27in 1440p Auria CM 750 600T 
  hide details  
Reply
post #5 of 8
1100MHz is a little overclock for a GTX 780, so you're fine.

If you decide to use the 1.3v hack, could pose a problem.
post #6 of 8
I dont think you can overvolt your GTX 780 cards on a 760 watts PSU

I think you need more wattage for that
Seravee
(24 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core I7 6850K Gigabyte X99 Ultra Gaming Gigabyte GTX 970 G1 Gaming Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD30EZRX  WD Green WD40EZRX  WD Green WD60EZRX  
Hard DriveOptical DriveCoolingCooling
WD Red WD80EFZX 8TB  LG CH12NS30 5x Noctua NF-A14 FLX Noctua NH-D15 
OSMonitorKeyboardPower
Windows 7 64 Bit Asus PG279Q Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt 
CaseMouseMouse PadAudio
Phanteks Enthoo Luxe Roccat Kone XTD Laser Roccat Sense Metor Sennheiser HD 598 
AudioAudioOtherOther
Onkyo TX NR646  Harman Kardon HKTS 60 CableMod E series PSU cable set CableMod LED Strips 
  hide details  
Reply
Seravee
(24 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core I7 6850K Gigabyte X99 Ultra Gaming Gigabyte GTX 970 G1 Gaming Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD30EZRX  WD Green WD40EZRX  WD Green WD60EZRX  
Hard DriveOptical DriveCoolingCooling
WD Red WD80EFZX 8TB  LG CH12NS30 5x Noctua NF-A14 FLX Noctua NH-D15 
OSMonitorKeyboardPower
Windows 7 64 Bit Asus PG279Q Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt 
CaseMouseMouse PadAudio
Phanteks Enthoo Luxe Roccat Kone XTD Laser Roccat Sense Metor Sennheiser HD 598 
AudioAudioOtherOther
Onkyo TX NR646  Harman Kardon HKTS 60 CableMod E series PSU cable set CableMod LED Strips 
  hide details  
Reply
post #7 of 8
I ran 1.325v in SLI through Heaven and 3dmark11, I think you'll be fine if you're not going over +38mv.
Valiance
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 2600k @ 1.4 [4.8Ghz | HT On] ASUS P8P67 PRO Rev. 3.1 EVGA GTX 980Ti @ 1450/1905 8GB Ripjaw X @ 2133 @ 9-11-11-28 
Hard DriveHard DriveCoolingCooling
[OCZ Vertex 4 128GB] - [Corsair Force 3 90GB x2... [Crucial M4 128GB] - [Samsung 840 Pro 256GB] Corsair H80 Hydro 2x Corsair AF120s | 2x SP120s 
OSMonitorMonitorMonitor
Windows 7 Ultimate 64 Bit Dell 19" 1440x900 [75Hz] Toshiba 24" LED | 1920x1080 BenQ XL2410T [120Hz] 
KeyboardPowerCaseMouse
Corsair K90 [Mechanical] /CM Quickfire Rapid [B... SeaSonic X-750 Corsair 500R Feenix Nascita 
Mouse Pad
Steel Series 
  hide details  
Reply
Valiance
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 2600k @ 1.4 [4.8Ghz | HT On] ASUS P8P67 PRO Rev. 3.1 EVGA GTX 980Ti @ 1450/1905 8GB Ripjaw X @ 2133 @ 9-11-11-28 
Hard DriveHard DriveCoolingCooling
[OCZ Vertex 4 128GB] - [Corsair Force 3 90GB x2... [Crucial M4 128GB] - [Samsung 840 Pro 256GB] Corsair H80 Hydro 2x Corsair AF120s | 2x SP120s 
OSMonitorMonitorMonitor
Windows 7 Ultimate 64 Bit Dell 19" 1440x900 [75Hz] Toshiba 24" LED | 1920x1080 BenQ XL2410T [120Hz] 
KeyboardPowerCaseMouse
Corsair K90 [Mechanical] /CM Quickfire Rapid [B... SeaSonic X-750 Corsair 500R Feenix Nascita 
Mouse Pad
Steel Series 
  hide details  
Reply
post #8 of 8
Thread Starter 
I appreciate yalls expertise Thank you!!
Main Rig
(13 items)
 
Secondary Rig
(15 items)
 
 
CPUMotherboardGraphicsGraphics
i7 3770k MSI Z77A-GD65 Gigabyte 780 OC Gigabyte 780 OC 
RAMHard DriveHard DriveOptical Drive
Ripjaw  Samsung F3  Samsung 830  Asus CD-Rom 
CoolingMonitorMonitorPower
Cooler master hyper 212+  Asus  27in 1440p Auria EQ276W 760 Watt Silencer 
Case
Haf 912 
CPUMotherboardGraphicsGraphics
i7 3770k ASRock Z77 Pro4-M 290 XFX DD R9 280X Gigabyte 
GraphicsGraphicsRAMHard Drive
R9 280X MSI Gaming R9 280X Power Cooler Crucial Ballistix  Samsung 830 series 
Hard DriveOptical DriveOSMonitor
WD Black Asus 24x Windows 7 Asus 24in  
MonitorPowerCase
27in 1440p Auria CM 750 600T 
  hide details  
Reply
Main Rig
(13 items)
 
Secondary Rig
(15 items)
 
 
CPUMotherboardGraphicsGraphics
i7 3770k MSI Z77A-GD65 Gigabyte 780 OC Gigabyte 780 OC 
RAMHard DriveHard DriveOptical Drive
Ripjaw  Samsung F3  Samsung 830  Asus CD-Rom 
CoolingMonitorMonitorPower
Cooler master hyper 212+  Asus  27in 1440p Auria EQ276W 760 Watt Silencer 
Case
Haf 912 
CPUMotherboardGraphicsGraphics
i7 3770k ASRock Z77 Pro4-M 290 XFX DD R9 280X Gigabyte 
GraphicsGraphicsRAMHard Drive
R9 280X MSI Gaming R9 280X Power Cooler Crucial Ballistix  Samsung 830 series 
Hard DriveOptical DriveOSMonitor
WD Black Asus 24x Windows 7 Asus 24in  
MonitorPowerCase
27in 1440p Auria CM 750 600T 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Power Supplies
Overclock.net › Forums › Components › Power Supplies › 760 Watt PSU for SLI 780s? HELP!