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Not enough power?

post #1 of 10
Thread Starter 
Hi,

Just wondering if anyone can help me with this issue. My current system is an X4 955 at 1.45V on 3.6ghz, with two 480's running at 1.1V/810/1900. My power supply is a Silverstone Strider Plus 1000w. Recently, I've been trying to overclock my 480's due to having them put into a WC loop, but when I bump the voltages from 1.1V to 1.125V, it completely shuts down my computer as soon as I run a GPU stress test. And just to clarify, I don't mean just the video cards crash, but rather my entire system turns off.

So thinking it was a power supply issue, I picked up a Kill-A-Watt, and this is what I found:

Idle: 220W

OCCT GPU Test: 920W, fully stable for 15 minutes.

OCCT Power Supply Test: 940W, freezes after approx. 40 seconds, and then shutdown (it's the first time I tried this test, and also the first time my computer shut down at the current clocks)

Additionally, when I leave my video cards alone, and up my vCore of my 955 to 1.49V to get 3.7ghz, it does the exact same thing when I run the OCCT GPU Test.

So, is there anyone that can help me figure out this problem? Is it because my power supply is inadequate, or is it something else that could be causing it? Thanks in advance!
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post #2 of 10
Not the power supply.

You're overclocking your graphics cards. You experience instability. Tune your overclocks.
post #3 of 10
I don't know. If we assume that the PSU was 80% efficient during that power draw at the Kill A Watt, then that would mean the system was pulling 752W max from the PSU during the OCCT Power Supply Test. If it were 85% efficient, then that would be a 799W draw.

So I don't know... I mean, this PSU has a +12V capacity of 80A which is 960W (85A peak) which is fairly high above this ~800W power draw.
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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post #4 of 10
Thread Starter 
Well, it's fully stable with everything I throw at it, until I run that Power Supply Test.

Also, if it were my overclocks becoming unstable from my video cards, then why would the same instant shutdown occur when I don't adjust my video card clocks/voltages at all, but just my CPU's (the 3.7ghz OC is fully stable, as I've thrown IBT, P95 and OCCT CPU stress tests at it with no signs of instability)?
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OCZ Agility 3 Sandisk Extreme Samsung SH-B123L Windows 7 Home Edition 64-bit 
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OCZ Agility 3 Sandisk Extreme Samsung SH-B123L Windows 7 Home Edition 64-bit 
MonitorKeyboardPowerCase
Acer GD235HZ Steelseries 6GV2 Antec HCG-620M Silverstone Precision PS07B 
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post #5 of 10
Thread Starter 
Well, just to update this thread, it was in fact the power supply. I went out and bought a new OCZ ZX 1000w to see if it was in fact the PSU that was the problem, and turns out it was. Upped the core clocks and voltage settings to the same levels that caused the insta-shutdown before, and it ran just fine. Although now I'm gonna have to return the OCZ, as it suffers from the noise issues that Jonnyguru was talking about in their review

Any recommendations as to what power supplies I should look at? It'd be really appreciated.
My System
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Intel i7 2700K ASUS P8Z68-M PRO ASUS GTX 680 Kingston 8GB DDR3-1866 
Hard DriveHard DriveOptical DriveOS
OCZ Agility 3 Sandisk Extreme Samsung SH-B123L Windows 7 Home Edition 64-bit 
MonitorKeyboardPowerCase
Acer GD235HZ Steelseries 6GV2 Antec HCG-620M Silverstone Precision PS07B 
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 2700K ASUS P8Z68-M PRO ASUS GTX 680 Kingston 8GB DDR3-1866 
Hard DriveHard DriveOptical DriveOS
OCZ Agility 3 Sandisk Extreme Samsung SH-B123L Windows 7 Home Edition 64-bit 
MonitorKeyboardPowerCase
Acer GD235HZ Steelseries 6GV2 Antec HCG-620M Silverstone Precision PS07B 
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post #6 of 10
Quote:
Originally Posted by hacksaw907 View Post
Well, just to update this thread, it was in fact the power supply. I went out and bought a new OCZ ZX 1000w to see if it was in fact the PSU that was the problem, and turns out it was. Upped the core clocks and voltage settings to the same levels that caused the insta-shutdown before, and it ran just fine. Although now I'm gonna have to return the OCZ, as it suffers from the noise issues that Jonnyguru was talking about in their review

Any recommendations as to what power supplies I should look at? It'd be really appreciated.
Just about any high quality 750W-850W power supply should be enough to power a system with two GTX 480s in it, so what's your budget?
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #7 of 10
Thread Starter 
Well, I'm Canadian, so I'll be looking at a budget of at most 200CAD. As for a good 750-850w PSU, are you sure that would be enough? I mean, I'm already pulling 940w from the wall, so that should be about 800w load on the power supply assuming 85% efficiency, which is kind of close to 850w if you ask me.

I'm currently looking at the Enermax Revolution85+ 920w for 184.99. Would that be a good one to pick?
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CPUMotherboardGraphicsRAM
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Hard DriveHard DriveOptical DriveOS
OCZ Agility 3 Sandisk Extreme Samsung SH-B123L Windows 7 Home Edition 64-bit 
MonitorKeyboardPowerCase
Acer GD235HZ Steelseries 6GV2 Antec HCG-620M Silverstone Precision PS07B 
MouseMouse PadAudio
Mionix Naos 5000 Razer Goliathus Fiio E17/E09K 
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 2700K ASUS P8Z68-M PRO ASUS GTX 680 Kingston 8GB DDR3-1866 
Hard DriveHard DriveOptical DriveOS
OCZ Agility 3 Sandisk Extreme Samsung SH-B123L Windows 7 Home Edition 64-bit 
MonitorKeyboardPowerCase
Acer GD235HZ Steelseries 6GV2 Antec HCG-620M Silverstone Precision PS07B 
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post #8 of 10
Should work
Poison
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Poison
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post #9 of 10
The Enermax Revolution85+ 920W is a good unit. See if you can get the Sapphire Pure PSU 950W -- it's a slightly older yet superior version of the same unit by Enermax, and if you can find it, it may be cheaper.
post #10 of 10
Quote:
Originally Posted by hacksaw907 View Post
Well, I'm Canadian, so I'll be looking at a budget of at most 200CAD. As for a good 750-850w PSU, are you sure that would be enough? I mean, I'm already pulling 940w from the wall, so that should be about 800w load on the power supply assuming 85% efficiency, which is kind of close to 850w if you ask me.

I'm currently looking at the Enermax Revolution85+ 920w for 184.99. Would that be a good one to pick?
But when you pulled 940W from the wall, that was during OCCT's Power Supply test. Have you ever seen a higher power draw at the wall than 940W? What's the usual power draw?

I mean, 940W is probably the highest power draw it would EVER pull, thereby making a high quality 850W power supply the perfect fit for your system.

With a budget of $200 CAD, I recommend these 850W units (sorted by price, lowest to highest):
  • XFX Black Edition for $139.99
  • SeaSonic M12D for $159.90 (the Black Edition above for $139.99 is a rebrand of this unit)
  • Corsair HX850 for $189.99
  • Corsair AX850 for $189.99
  • Antec High Current Gamer Pro for $215.72 (I included this one because Phaedrus2129 has one of these HCG Pros in his system - although, I don't know if it's the 750W, 850W, or the 1200W. I'm assuming it's either the 750W or 850W)

The Corsair HX850 is a slightly better performer than the AX850, but the AX850 is 100% modular. The 850W XFX Black Edition (which is an M12D internally) is probably the best choice in this list because of its price; it also achieves performance that is comparable to the HX750 and HX850 (source).

I am 100% confident in all of these PSUs.
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
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