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PSU cutting it too close?

post #1 of 9
Thread Starter 
Hey guys, I've got a PC Power & Cooling 950w PSU and it's served me quite well with my build but recently I've considered adding a second GTX 680 for SLI within the near future. Through the use of a few different PSU calculators all in all I'd average about 850w of power. This would be the first time I ever had a system this particularly powerful so I'm not sure if I'd be cutting it too close given the inevitable OCing that I'd be dabbling in.

So I'm wondering if that's a decent enough window to not have to worry too much or if I should play it safe regardless and step up to 1000w+ just in case.
post #2 of 9
Please post the rest of your system and OC settings.
Nebula
(33 items)
 
  
CPUCPUMotherboardGraphics
Intel Core i7 2700K Intrel Core i7 2700K Asus p8z68-v Pro Gen3 MSI N580GTX Lightning Xtreme 3GB Edition 
GraphicsRAMHard DriveHard Drive
MSI N580GTX Lightning Xtreme 3GB Edition G.Skill RipjawX F3-17000CL9D-8GBXM Western Digital Caviar Black 2TB 7200RPM Seagate Barracuda LP 2TB 5900RPM 
Optical DriveCoolingCoolingCooling
Pioneer BDR-206BK 12X Blu-Ray Writer Drive Koolance RP-452X2 Dual 5.25in Reservoir for 1-2... Koolance 450s Pump Koolance 450s Pump 
CoolingCoolingCoolingCooling
EK Supreme HF Bitspower Black Freezer Acrylic Top With Clear ... Bitspower Black Freezer Acrylic Top With Clear ... Black Ice GTX 240 Radiator 
CoolingCoolingCoolingCooling
Black Ice GTX 480 Radiator Koolance CTR-SPD24X2 Dual 24V Pump Controller Nidec Servo Scythe Gentle Typhoon 120mm Case Fa... Xigmatek Crystal Red LED 140mm Case Fan 1000RPM 
CoolingCoolingOSMonitor
Bitfenix Spectre PRO Red LED 230mm Case Fan 900RPM Silverstone Air-Penetrator UV-Blue 120mm Case F... Windows 7 Home Premium 64 Bits Benq XL2410T 120hz 
MonitorKeyboardPowerCase
Samsung SyncMaster 740N 17" Azio Levetron Mech 5 Mechanical Gaming Keyboard Cooler Master Silent Pro Hybrid 1300W Aerocool X-Predator Evil Black Edition 
MouseAudioOtherOther
Logitech G9X Gaming Mouse Auzentech X-Meridian 7.1 2G Lamptron FC5 V2 Fan Controller Bitspower Dual 20cm Cold Cathode Kit UV 
Other
Bitspower Dual 30cm Cold Cathode Kit UV 
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Nebula
(33 items)
 
  
CPUCPUMotherboardGraphics
Intel Core i7 2700K Intrel Core i7 2700K Asus p8z68-v Pro Gen3 MSI N580GTX Lightning Xtreme 3GB Edition 
GraphicsRAMHard DriveHard Drive
MSI N580GTX Lightning Xtreme 3GB Edition G.Skill RipjawX F3-17000CL9D-8GBXM Western Digital Caviar Black 2TB 7200RPM Seagate Barracuda LP 2TB 5900RPM 
Optical DriveCoolingCoolingCooling
Pioneer BDR-206BK 12X Blu-Ray Writer Drive Koolance RP-452X2 Dual 5.25in Reservoir for 1-2... Koolance 450s Pump Koolance 450s Pump 
CoolingCoolingCoolingCooling
EK Supreme HF Bitspower Black Freezer Acrylic Top With Clear ... Bitspower Black Freezer Acrylic Top With Clear ... Black Ice GTX 240 Radiator 
CoolingCoolingCoolingCooling
Black Ice GTX 480 Radiator Koolance CTR-SPD24X2 Dual 24V Pump Controller Nidec Servo Scythe Gentle Typhoon 120mm Case Fa... Xigmatek Crystal Red LED 140mm Case Fan 1000RPM 
CoolingCoolingOSMonitor
Bitfenix Spectre PRO Red LED 230mm Case Fan 900RPM Silverstone Air-Penetrator UV-Blue 120mm Case F... Windows 7 Home Premium 64 Bits Benq XL2410T 120hz 
MonitorKeyboardPowerCase
Samsung SyncMaster 740N 17" Azio Levetron Mech 5 Mechanical Gaming Keyboard Cooler Master Silent Pro Hybrid 1300W Aerocool X-Predator Evil Black Edition 
MouseAudioOtherOther
Logitech G9X Gaming Mouse Auzentech X-Meridian 7.1 2G Lamptron FC5 V2 Fan Controller Bitspower Dual 20cm Cold Cathode Kit UV 
Other
Bitspower Dual 30cm Cold Cathode Kit UV 
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post #3 of 9
Thread Starter 
Crosshair V Formula-Z
Phenom II x6 1100t w/ CNPS 10x Optima (2 fans attached)
GTX 680 4GB
16GB DDR3 1600
4 2TB SATA HDD
1 240gb SDD
5 LED 140mm case fans
4 140mm fans

If I remember correctly I was at 1228MHz without trying too thorough but I'm back at stock until I have the time to see where I can max out.

Edit: Oh and I have an NZXT Hue controller but I don't think that's too much of a power issue as it's not really consuming anything more than 5w and I can just easily turn it off.
Edited by Schindlerian - 12/9/12 at 6:55pm
post #4 of 9
Quote:
Originally Posted by Schindlerian View Post

Crosshair V Formula-Z
Phenom II x6 1100t w/ CNPS 10x Optima (2 fans attached)
GTX 680 4GB
16GB DDR3 1600
4 2TB SATA HDD
1 240gb SDD
5 LED 140mm case fans
4 140mm fans
If I remember correctly I was at 1228MHz without trying too thorough but I'm back at stock until I have the time to see where I can max out.
Edit: Oh and I have an NZXT Hue controller but I don't think that's too much of a power issue as it's not really consuming anything more than 5w and I can just easily turn it off.

I reckon you should be fine. TDP list:
CPU: 125W
GPU: 195W
2nd GPU: 195W
Total is only 515W leaving you with lots of headroom for OC,

For my system, I'm running sandy bridge 2700K with 2x GTX 580 which draws far more power than the GTX 680s. On top of that I have lots of fans, pump and LED. Extreme OC my rig I use ~ 980W at max load, so you should have enough power for your setup.

Only thing I would be concerned is the efficiency rating of your PSU. So I think you should check on that.
Nebula
(33 items)
 
  
CPUCPUMotherboardGraphics
Intel Core i7 2700K Intrel Core i7 2700K Asus p8z68-v Pro Gen3 MSI N580GTX Lightning Xtreme 3GB Edition 
GraphicsRAMHard DriveHard Drive
MSI N580GTX Lightning Xtreme 3GB Edition G.Skill RipjawX F3-17000CL9D-8GBXM Western Digital Caviar Black 2TB 7200RPM Seagate Barracuda LP 2TB 5900RPM 
Optical DriveCoolingCoolingCooling
Pioneer BDR-206BK 12X Blu-Ray Writer Drive Koolance RP-452X2 Dual 5.25in Reservoir for 1-2... Koolance 450s Pump Koolance 450s Pump 
CoolingCoolingCoolingCooling
EK Supreme HF Bitspower Black Freezer Acrylic Top With Clear ... Bitspower Black Freezer Acrylic Top With Clear ... Black Ice GTX 240 Radiator 
CoolingCoolingCoolingCooling
Black Ice GTX 480 Radiator Koolance CTR-SPD24X2 Dual 24V Pump Controller Nidec Servo Scythe Gentle Typhoon 120mm Case Fa... Xigmatek Crystal Red LED 140mm Case Fan 1000RPM 
CoolingCoolingOSMonitor
Bitfenix Spectre PRO Red LED 230mm Case Fan 900RPM Silverstone Air-Penetrator UV-Blue 120mm Case F... Windows 7 Home Premium 64 Bits Benq XL2410T 120hz 
MonitorKeyboardPowerCase
Samsung SyncMaster 740N 17" Azio Levetron Mech 5 Mechanical Gaming Keyboard Cooler Master Silent Pro Hybrid 1300W Aerocool X-Predator Evil Black Edition 
MouseAudioOtherOther
Logitech G9X Gaming Mouse Auzentech X-Meridian 7.1 2G Lamptron FC5 V2 Fan Controller Bitspower Dual 20cm Cold Cathode Kit UV 
Other
Bitspower Dual 30cm Cold Cathode Kit UV 
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Nebula
(33 items)
 
  
CPUCPUMotherboardGraphics
Intel Core i7 2700K Intrel Core i7 2700K Asus p8z68-v Pro Gen3 MSI N580GTX Lightning Xtreme 3GB Edition 
GraphicsRAMHard DriveHard Drive
MSI N580GTX Lightning Xtreme 3GB Edition G.Skill RipjawX F3-17000CL9D-8GBXM Western Digital Caviar Black 2TB 7200RPM Seagate Barracuda LP 2TB 5900RPM 
Optical DriveCoolingCoolingCooling
Pioneer BDR-206BK 12X Blu-Ray Writer Drive Koolance RP-452X2 Dual 5.25in Reservoir for 1-2... Koolance 450s Pump Koolance 450s Pump 
CoolingCoolingCoolingCooling
EK Supreme HF Bitspower Black Freezer Acrylic Top With Clear ... Bitspower Black Freezer Acrylic Top With Clear ... Black Ice GTX 240 Radiator 
CoolingCoolingCoolingCooling
Black Ice GTX 480 Radiator Koolance CTR-SPD24X2 Dual 24V Pump Controller Nidec Servo Scythe Gentle Typhoon 120mm Case Fa... Xigmatek Crystal Red LED 140mm Case Fan 1000RPM 
CoolingCoolingOSMonitor
Bitfenix Spectre PRO Red LED 230mm Case Fan 900RPM Silverstone Air-Penetrator UV-Blue 120mm Case F... Windows 7 Home Premium 64 Bits Benq XL2410T 120hz 
MonitorKeyboardPowerCase
Samsung SyncMaster 740N 17" Azio Levetron Mech 5 Mechanical Gaming Keyboard Cooler Master Silent Pro Hybrid 1300W Aerocool X-Predator Evil Black Edition 
MouseAudioOtherOther
Logitech G9X Gaming Mouse Auzentech X-Meridian 7.1 2G Lamptron FC5 V2 Fan Controller Bitspower Dual 20cm Cold Cathode Kit UV 
Other
Bitspower Dual 30cm Cold Cathode Kit UV 
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post #5 of 9
900w should be enough for that, but with the investment of 2x GTX680s you could get a lot more performance out of a newer i5/i7 or FX CPU for a lesser cost.
Das Rig, Ja?
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Das Rig, Ja?
(12 items)
 
  
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AMD Ryzen 1700 Asus Crosshair VI EVGA 1080Ti SC2 2x16G GSkill RGB 3200 
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500 GB 960 EVO Enermax T50A-BVT Windows 10 Pro 27" Asus 
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post #6 of 9
Thread Starter 
Yeah I'm not likely switching my mobo for a while with the Crosshair V being new (although I do wish I could see the performance level otherwise) however I am considering upgrading to an FX CPU but I just don't see even the 8350 being all too significant of an upgrade. I guess right now I'm just kind of waiting it out and will almost more than likely upgrade with the next installment.
post #7 of 9
That PSU will run that 1100T and QUAD-SLI GTX 680's if you wanted.
Heisenberg
(10 items)
 
Redemption
(18 items)
 
 
CPUGraphicsRAMHard Drive
Intel Core 2 Extreme @ 2.8GHz (upgrade) Intel GMA 950 2 x 2 DDR2 667MHz (upgrade) 120GB Mushkin ECO2 
Optical DriveOSMonitorPower
Replaced with 42 W/hr aux battery Mint 17.3 1280x800 Dell 65w Dell Adapter 
CaseOther
Latitude D630 Chassis Intel 7260-802.11ac 2x2 
CPUMotherboardGraphicsRAM
Not telling AsRock something Pixel Pusher 2 x 8 GB AMD Radeon RAM @ 1600mhz (All the VM's) 
Hard DriveHard DriveHard DriveOptical Drive
Crucial M4 128GB (8 second boot) Western Digital RE4 1TB Western Digital RE4 2TB Pioneer Blu-Ray Reader/Writer 
CoolingOSMonitorKeyboard
Cooler Master Hyper 212 Evo Windows 8.1 Pro x64 Dell U2713HM IBM Model M (CLICKY!!) 
PowerCaseMouseAudio
Antec HCG-900 NZXT Source 210 (it was cheap) Logitech G502 Schiit Modi 
AudioAudio
Sennheiser HD 598 M-Audio AV40's 
CPUMotherboardGraphicsRAM
Intel Core i5-4200U Microsoft BGA1168 Intel HD 4400 8 GB LPDDR3 Dual Channel @ 1600mhz 
Hard DriveOSMonitorKeyboard
SK Hynix 256GB SSD Windows 8.1 Professional 1920 x 1080p IPS Display Microsoft Touch Cover 2 
Power
48w PSU 
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Heisenberg
(10 items)
 
Redemption
(18 items)
 
 
CPUGraphicsRAMHard Drive
Intel Core 2 Extreme @ 2.8GHz (upgrade) Intel GMA 950 2 x 2 DDR2 667MHz (upgrade) 120GB Mushkin ECO2 
Optical DriveOSMonitorPower
Replaced with 42 W/hr aux battery Mint 17.3 1280x800 Dell 65w Dell Adapter 
CaseOther
Latitude D630 Chassis Intel 7260-802.11ac 2x2 
CPUMotherboardGraphicsRAM
Not telling AsRock something Pixel Pusher 2 x 8 GB AMD Radeon RAM @ 1600mhz (All the VM's) 
Hard DriveHard DriveHard DriveOptical Drive
Crucial M4 128GB (8 second boot) Western Digital RE4 1TB Western Digital RE4 2TB Pioneer Blu-Ray Reader/Writer 
CoolingOSMonitorKeyboard
Cooler Master Hyper 212 Evo Windows 8.1 Pro x64 Dell U2713HM IBM Model M (CLICKY!!) 
PowerCaseMouseAudio
Antec HCG-900 NZXT Source 210 (it was cheap) Logitech G502 Schiit Modi 
AudioAudio
Sennheiser HD 598 M-Audio AV40's 
CPUMotherboardGraphicsRAM
Intel Core i5-4200U Microsoft BGA1168 Intel HD 4400 8 GB LPDDR3 Dual Channel @ 1600mhz 
Hard DriveOSMonitorKeyboard
SK Hynix 256GB SSD Windows 8.1 Professional 1920 x 1080p IPS Display Microsoft Touch Cover 2 
Power
48w PSU 
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post #8 of 9
Thread Starter 
Well that's definitely great to know, I guess I was just being over-precautious. Really can't wait to run this build in SLI.
post #9 of 9
Quote:
Originally Posted by Schindlerian View Post

Well that's definitely great to know, I guess I was just being over-precautious. Really can't wait to run this build in SLI.

thumb.gif Never hurts to check!
Heisenberg
(10 items)
 
Redemption
(18 items)
 
 
CPUGraphicsRAMHard Drive
Intel Core 2 Extreme @ 2.8GHz (upgrade) Intel GMA 950 2 x 2 DDR2 667MHz (upgrade) 120GB Mushkin ECO2 
Optical DriveOSMonitorPower
Replaced with 42 W/hr aux battery Mint 17.3 1280x800 Dell 65w Dell Adapter 
CaseOther
Latitude D630 Chassis Intel 7260-802.11ac 2x2 
CPUMotherboardGraphicsRAM
Not telling AsRock something Pixel Pusher 2 x 8 GB AMD Radeon RAM @ 1600mhz (All the VM's) 
Hard DriveHard DriveHard DriveOptical Drive
Crucial M4 128GB (8 second boot) Western Digital RE4 1TB Western Digital RE4 2TB Pioneer Blu-Ray Reader/Writer 
CoolingOSMonitorKeyboard
Cooler Master Hyper 212 Evo Windows 8.1 Pro x64 Dell U2713HM IBM Model M (CLICKY!!) 
PowerCaseMouseAudio
Antec HCG-900 NZXT Source 210 (it was cheap) Logitech G502 Schiit Modi 
AudioAudio
Sennheiser HD 598 M-Audio AV40's 
CPUMotherboardGraphicsRAM
Intel Core i5-4200U Microsoft BGA1168 Intel HD 4400 8 GB LPDDR3 Dual Channel @ 1600mhz 
Hard DriveOSMonitorKeyboard
SK Hynix 256GB SSD Windows 8.1 Professional 1920 x 1080p IPS Display Microsoft Touch Cover 2 
Power
48w PSU 
  hide details  
Reply
Heisenberg
(10 items)
 
Redemption
(18 items)
 
 
CPUGraphicsRAMHard Drive
Intel Core 2 Extreme @ 2.8GHz (upgrade) Intel GMA 950 2 x 2 DDR2 667MHz (upgrade) 120GB Mushkin ECO2 
Optical DriveOSMonitorPower
Replaced with 42 W/hr aux battery Mint 17.3 1280x800 Dell 65w Dell Adapter 
CaseOther
Latitude D630 Chassis Intel 7260-802.11ac 2x2 
CPUMotherboardGraphicsRAM
Not telling AsRock something Pixel Pusher 2 x 8 GB AMD Radeon RAM @ 1600mhz (All the VM's) 
Hard DriveHard DriveHard DriveOptical Drive
Crucial M4 128GB (8 second boot) Western Digital RE4 1TB Western Digital RE4 2TB Pioneer Blu-Ray Reader/Writer 
CoolingOSMonitorKeyboard
Cooler Master Hyper 212 Evo Windows 8.1 Pro x64 Dell U2713HM IBM Model M (CLICKY!!) 
PowerCaseMouseAudio
Antec HCG-900 NZXT Source 210 (it was cheap) Logitech G502 Schiit Modi 
AudioAudio
Sennheiser HD 598 M-Audio AV40's 
CPUMotherboardGraphicsRAM
Intel Core i5-4200U Microsoft BGA1168 Intel HD 4400 8 GB LPDDR3 Dual Channel @ 1600mhz 
Hard DriveOSMonitorKeyboard
SK Hynix 256GB SSD Windows 8.1 Professional 1920 x 1080p IPS Display Microsoft Touch Cover 2 
Power
48w PSU 
  hide details  
Reply
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