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How much power for a 6Ghz + CPU setup under l2n?

post #1 of 19
Thread Starter 
Ok so very recently (ie yesterday) i did my first dry ice run on my sig rig, and was told by the guy i got the pot from (a avid Below Zero Ocer) that my psu might not be adequate enough when i break the 6Ghz barrier and up.

Yesterday i hit 5.2GHz but could go no further without giving my CPU more than 1.7v, which is just getting stupid and hence i went no further.

Now his his statements correct?
He said that the CPU alone can suck up to 400w when at those clocks.

If that is the case then im thinking i need to be looking for a new PSU, and probably to be safe something in the 1000W range.

I really like my current PSU so id definately look at the OCZ Z-series 1000w, but also consider the corsair HX which is a very serious contender here.

Ive also heard mixed feelings that a single rail is much better than 2/4 rail PSU's and other say it does not make a difference really.

Is a 1000w PSU over kill? I would like to be able to crossfire 2 GPU's and say clock at 6.5GHz as well as a possible upgrade to bulldozer when its released.

Any help here would be greatly appreciated.
   
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Cores Galore
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CPUGraphicsRAMHard Drive
i7-6700HQ GTX 1070 8GB, GPU AMP Waiting for BIG Vega 16GB 2667mhz Alienware Crucial BX100 1TB 
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Samsung 960 Pro 512GB Acer XR341CK 34" 3440x1440 @ 85hz awesomness Stock 1920x1080 Logitech G410 Atlas Spectrum 
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I7 3960X Rampage IV Extreme Black Edition MSI R9 390X Gaming 32GB Corsair Vengence 
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Crucial MX200 240GB 1TB Crucial BX100 Custom WC Loop Windows 10 
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post #2 of 19
No it isn't overkill. If anything, it is smart. I don't know about the whole single rail versus multiple rail thing, but a strong PSU is worth purchasing. I mean, look at it this way, the PSU is one of the ONLY computer components you dont have to replace over and over again because the tech rarely changes. The way I see it, this is a good opportunity to get a high quality PSU that will last you a long time.

For my newest build, I invested in this:
http://www.newegg.com/Product/Produc...ro%201200%20oc

The OCing capability is great. You can adjust the voltages across the 12 volt rails up to 12.6volts. Plus you can control the PSU's fan speed which is great for anyone who worries about temps like myself.

Now back to your question, I recommend the Corsair over the OCZ. I would argue that the Corsair will have better build quality and is "tried and true."

And yes, a CPU around those speeds can easily gobble 400watts+ That's why you will see most LN2 OCers using one massive PSU, or multiple PSUs.

Good luck man

*edit*
Oh, and so you know, P=IV or Power (wattage)=Current (FSB) times Voltage.
Ex:
My 920 is P=205 X 1.28volts which equates to my CPU using 262 watts (roughly. There is more to it than that, but that equation is a good estimate)
Edited by Rider85 - 1/16/11 at 11:19am
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post #3 of 19
Thread Starter 
Thanks, +rep

That antec is beautiful I read reviews of the 1000w version and they said it was dissapointing at high wattages and therefore took it out of my list of options.
   
Cores Galore
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i7-6700HQ GTX 1070 8GB, GPU AMP Waiting for BIG Vega 16GB 2667mhz Alienware Crucial BX100 1TB 
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AudioAudio
Logitech G930 Audio Technica ATH-M50X 
CPUMotherboardGraphicsRAM
I7 3960X Rampage IV Extreme Black Edition MSI R9 390X Gaming 32GB Corsair Vengence 
Hard DriveHard DriveCoolingOS
Crucial MX200 240GB 1TB Crucial BX100 Custom WC Loop Windows 10 
MonitorMonitorKeyboardPower
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Cores Galore
(16 items)
 
CPUGraphicsRAMHard Drive
i7-6700HQ GTX 1070 8GB, GPU AMP Waiting for BIG Vega 16GB 2667mhz Alienware Crucial BX100 1TB 
Hard DriveMonitorMonitorKeyboard
Samsung 960 Pro 512GB Acer XR341CK 34" 3440x1440 @ 85hz awesomness Stock 1920x1080 Logitech G410 Atlas Spectrum 
MouseMouse PadAudio
Logitech G700S Roccat Taito Logitech G930 
CPUMotherboardGraphicsHard Drive
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Hard DriveOSMonitorMonitor
Crucial BX100 1TB Windows 10 Acer XR341CK Stock 14" 1920x1080 IPS 
KeyboardPowerMouseMouse Pad
Logitech G410 Atlas Spectrum Stock Alienware 180W Logitech G700S Roccat MTW 
AudioAudio
Logitech G930 Audio Technica ATH-M50X 
CPUMotherboardGraphicsRAM
I7 3960X Rampage IV Extreme Black Edition MSI R9 390X Gaming 32GB Corsair Vengence 
Hard DriveHard DriveCoolingOS
Crucial MX200 240GB 1TB Crucial BX100 Custom WC Loop Windows 10 
MonitorMonitorKeyboardPower
Acer P243W Acer P243W Logitech G510S Corsair AX850 
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None rght now Logitech G500S Roccat Taito MTW Logitech G930 
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post #4 of 19
Quote:
Originally Posted by SystemTech View Post
Thanks, +rep

That antec is beautiful I read reviews of the 1000w version and they said it was dissapointing at high wattages and therefore took it out of my list of options.
Yeah, I think it succumbs to loss of energy due to heat or something. I read the same thing. The Antec i have is what EVGA bought and rebadged as the "SR-2 PSU." My only complaint is that the capacitors make it hard to manage, but with a few hours of work I was able to do it.

Have fun with your LN2 That's too ballzy for me haha. Plus curiosity may freeze my cat haha.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 920 @ 4.0GHz-1.27Vcore w/HT EVGA Classified E762 4-way Sli 2x GTX 670 SC 4GB in SLI 12GB Mushkin @ 1699MHz at Cas7 
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Raid 0 with 4x 250GB Samsung 840s for 1TB SSD w... Windows 7 Ultimate 64bit Triple LG 23" LED IPS monitors Custom Max Keyboard Nighthawk 
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My System
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CPUMotherboardGraphicsRAM
Core i7 920 @ 4.0GHz-1.27Vcore w/HT EVGA Classified E762 4-way Sli 2x GTX 670 SC 4GB in SLI 12GB Mushkin @ 1699MHz at Cas7 
Hard DriveOSMonitorKeyboard
Raid 0 with 4x 250GB Samsung 840s for 1TB SSD w... Windows 7 Ultimate 64bit Triple LG 23" LED IPS monitors Custom Max Keyboard Nighthawk 
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post #5 of 19
a quality 900watt RMS psu should give you no problems
also dont buy a 900watts peak psu
but you will need about 1.8+V to get into 6ghz.
it took my 555 1.74V to hit 5.2
Edited by redhat_ownage - 1/16/11 at 11:34am
post #6 of 19
Thread Starter 
Quote:
My only complaint is that the capacitors make it hard to manage, but with a few hours of work I was able to do it.
Please explain what you mean by this.

Thanks
   
Cores Galore
(16 items)
 
CPUGraphicsRAMHard Drive
i7-6700HQ GTX 1070 8GB, GPU AMP Waiting for BIG Vega 16GB 2667mhz Alienware Crucial BX100 1TB 
Hard DriveMonitorMonitorKeyboard
Samsung 960 Pro 512GB Acer XR341CK 34" 3440x1440 @ 85hz awesomness Stock 1920x1080 Logitech G410 Atlas Spectrum 
MouseMouse PadAudio
Logitech G700S Roccat Taito Logitech G930 
CPUMotherboardGraphicsHard Drive
i7-4700QM Alienware M14X Nvidia Geforce GTX 765M Samsung Evo 850 mSATA 256 GB 
Hard DriveOSMonitorMonitor
Crucial BX100 1TB Windows 10 Acer XR341CK Stock 14" 1920x1080 IPS 
KeyboardPowerMouseMouse Pad
Logitech G410 Atlas Spectrum Stock Alienware 180W Logitech G700S Roccat MTW 
AudioAudio
Logitech G930 Audio Technica ATH-M50X 
CPUMotherboardGraphicsRAM
I7 3960X Rampage IV Extreme Black Edition MSI R9 390X Gaming 32GB Corsair Vengence 
Hard DriveHard DriveCoolingOS
Crucial MX200 240GB 1TB Crucial BX100 Custom WC Loop Windows 10 
MonitorMonitorKeyboardPower
Acer P243W Acer P243W Logitech G510S Corsair AX850 
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None rght now Logitech G500S Roccat Taito MTW Logitech G930 
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Cores Galore
(16 items)
 
CPUGraphicsRAMHard Drive
i7-6700HQ GTX 1070 8GB, GPU AMP Waiting for BIG Vega 16GB 2667mhz Alienware Crucial BX100 1TB 
Hard DriveMonitorMonitorKeyboard
Samsung 960 Pro 512GB Acer XR341CK 34" 3440x1440 @ 85hz awesomness Stock 1920x1080 Logitech G410 Atlas Spectrum 
MouseMouse PadAudio
Logitech G700S Roccat Taito Logitech G930 
CPUMotherboardGraphicsHard Drive
i7-4700QM Alienware M14X Nvidia Geforce GTX 765M Samsung Evo 850 mSATA 256 GB 
Hard DriveOSMonitorMonitor
Crucial BX100 1TB Windows 10 Acer XR341CK Stock 14" 1920x1080 IPS 
KeyboardPowerMouseMouse Pad
Logitech G410 Atlas Spectrum Stock Alienware 180W Logitech G700S Roccat MTW 
AudioAudio
Logitech G930 Audio Technica ATH-M50X 
CPUMotherboardGraphicsRAM
I7 3960X Rampage IV Extreme Black Edition MSI R9 390X Gaming 32GB Corsair Vengence 
Hard DriveHard DriveCoolingOS
Crucial MX200 240GB 1TB Crucial BX100 Custom WC Loop Windows 10 
MonitorMonitorKeyboardPower
Acer P243W Acer P243W Logitech G510S Corsair AX850 
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post #7 of 19
Quote:
Originally Posted by SystemTech View Post
Please explain what you mean by this.

Thanks
Some of the cables in the TPQ-1200 feature a large capacitor near the connector that can make it a pain for cable management.
post #8 of 19
Quote:
Originally Posted by SystemTech View Post
Please explain what you mean by this.

Thanks
Click on the link I sent and look at the ends of the cables. They have black ferret core looking things on the end. These are actually capacitors and Antec claims it helps with system stability, and theoretically it makes sense. The idea is that when the PSU is on, the capacitors will charge and store electricity. If there is any voltage fluctuation at the wall, your components can drain electricity from the capactiors to maintain consistent voltage.

Now, back to the cable management, the capacitors are thick and are hard to route through a case. They barely fit inbetween my mobo tray and sidepanel in my HAF 932. But after a few hours of routing, I was able to manage the cables and keep them out of sight. I purchased some NZXT single sleeved extensions to extend into the main part of my case to keep everything clean. Click on my avatar to see what I mean.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 920 @ 4.0GHz-1.27Vcore w/HT EVGA Classified E762 4-way Sli 2x GTX 670 SC 4GB in SLI 12GB Mushkin @ 1699MHz at Cas7 
Hard DriveOSMonitorKeyboard
Raid 0 with 4x 250GB Samsung 840s for 1TB SSD w... Windows 7 Ultimate 64bit Triple LG 23" LED IPS monitors Custom Max Keyboard Nighthawk 
PowerCaseMouseMouse Pad
Corsair AX1200i Modded HAF 932 Black Edition Logitech G600 Razer Destructor 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 920 @ 4.0GHz-1.27Vcore w/HT EVGA Classified E762 4-way Sli 2x GTX 670 SC 4GB in SLI 12GB Mushkin @ 1699MHz at Cas7 
Hard DriveOSMonitorKeyboard
Raid 0 with 4x 250GB Samsung 840s for 1TB SSD w... Windows 7 Ultimate 64bit Triple LG 23" LED IPS monitors Custom Max Keyboard Nighthawk 
PowerCaseMouseMouse Pad
Corsair AX1200i Modded HAF 932 Black Edition Logitech G600 Razer Destructor 
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post #9 of 19
Quote:
Originally Posted by Rider85 View Post
These are actually capacitors and Antec claims it helps with system stability, and theoretically it makes sense. The idea is that when the PSU is on, the capacitors will charge and store electricity. If there is any voltage fluctuation at the wall, your components can drain electricity from the capactiors to maintain consistent voltage.
It does in fact work, the review of the TPQ-1200 at Jonnyguru showed what happens when you use cables without the cap Admittedly the method is a form of cheating. If the units needs it, then it can be argued that the unit itself needs to be tweaked more, but it isn't a huge deal, and it is, after all, a great unit.
post #10 of 19
The MSI clocking contest recently used Antec CP1000 units, for single i7 980x (ES) and single GTX580 both under LN2. But that was all open bench work, which I presume is the way almost all LN2 and Dice benching happens? The CP is a great unit, with high quality power, it's just a pain to fit in any case except a very few, but for workbenches, it's perfect.
Ryzen 5 1600
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Ryzen 5 1600
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