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550W TPN Good For 2x 6870s?

post #1 of 8
Thread Starter 
I'm helping build a rig for my little brother. I know that the TPN typically perform better then what they are rated for, but would the 550W model be enough?

Cheers on any help.

Edit: This will be paired with a i7-3XXX series CPU + 8GB of ddr3. No overclocking on the CPU.
Edited by Domino - 5/30/12 at 9:49am
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post #2 of 8
Thread Starter 
bump
Msiory
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post #3 of 8
you could probably manage two 6870s on 550w but it would be cutting it close and you dont want to run your psu near its max for 24-7 and most likely 550w psus wont have the 4 6 pin connectors required. just get a reputable 750w and save yourself a headache.
post #4 of 8
Totals to just about 500W for that setup including efficiency losses. 550W is fine if it's a top quality PSU we're talking about here. Just grab some Molex-6-pin adapters. If you're buying new I would recommend minimum 650W for some more headroom. More info please.

I was running a Q6700 with 2x GTX460 SLI on my 3 year old 550W Seasonic for over a year without issues.
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post #5 of 8
Thread Starter 
Thanks guys. Yeah, it turns out it'll draw around 500 watts. I picked him out a 600 with 2 8 pins, but I'll try looking into a 650.
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post #6 of 8
Thread Starter 
Thanks again guys. We ended up getting him an hx 650 for gpu overclocking headroom and future upgrades.
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Msiory
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CPUMotherboardGraphicsRAM
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256 GB ADATA AX900 750 GB HDD Seagate Media Drive Super multi drive DVD Stock 
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Windows 8 64-bit 17.3" Full HD Anti-Reflective 1920 x 1080 (16:9) BenQ GW2750HM 27IN Widescreen A-MVA LED (Calrib... GT78ODXR Gaming Keyboard 
PowerCaseMouseMouse Pad
180 W AC adapter GT78ODXR Stock Chassis CM Storm Spawn Wooden Desk 
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post #7 of 8
IVe benched 2 7970s on a TPN 650 before. You should be good.

Sent from my Transformer TF101 using Tapatalk 2
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post #8 of 8
Thread Starter 
Quote:
Originally Posted by Dirtyworks View Post

IVe benched 2 7970s on a TPN 650 before. You should be good.

Sent from my Transformer TF101 using Tapatalk 2

Perfect, good to know.
Msiory
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CPUMotherboardGraphicsRAM
Intel® Core™ i7-2670QM Processor @ 3.0 GHz Intel® HM67 NVIDIA® GeForce® GTX 570M 1.5 GB DDR5 VRAM @ 76... 16GB DDR3 1333 | 9:9:9:24 1T 
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256 GB ADATA AX900 750 GB HDD Seagate Media Drive Super multi drive DVD Stock 
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Windows 8 64-bit 17.3" Full HD Anti-Reflective 1920 x 1080 (16:9) BenQ GW2750HM 27IN Widescreen A-MVA LED (Calrib... GT78ODXR Gaming Keyboard 
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180 W AC adapter GT78ODXR Stock Chassis CM Storm Spawn Wooden Desk 
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Msiory
(22 items)
 
  
CPUMotherboardGraphicsRAM
Intel® Core™ i7-2670QM Processor @ 3.0 GHz Intel® HM67 NVIDIA® GeForce® GTX 570M 1.5 GB DDR5 VRAM @ 76... 16GB DDR3 1333 | 9:9:9:24 1T 
Hard DriveHard DriveOptical DriveCooling
256 GB ADATA AX900 750 GB HDD Seagate Media Drive Super multi drive DVD Stock 
OSMonitorMonitorKeyboard
Windows 8 64-bit 17.3" Full HD Anti-Reflective 1920 x 1080 (16:9) BenQ GW2750HM 27IN Widescreen A-MVA LED (Calrib... GT78ODXR Gaming Keyboard 
PowerCaseMouseMouse Pad
180 W AC adapter GT78ODXR Stock Chassis CM Storm Spawn Wooden Desk 
AudioAudioAudioAudio
THX TruStudio PRO™, Dynaudio Premium Speakers w... AKG HD 240 MKII | AKG Q701 Soundblaster Creative HD USB Sound Card iM716 IEM 
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Logitech Desktop Microphone O2 DAC/AMP 
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