Overclock.net › Forums › Cooling › Specialized Cooling › Phase Change › When Phase units fail
New Posts  All Forums:Forum Nav:

When Phase units fail

post #1 of 14
Thread Starter 
Hello all,

I'm new to the phase scene (hoping to get one myself soon ), and I've been noticing that different units have different max loads.

I'm wondering.. what happens exactly if say a phase unit with a max heat load of, for example 200w, goes above that? My ignorance makes me think that if you're at temps in the -40 / 50's range, you would have a lot of room to play with before your cpu is at dangerous temps?

i.e. if you're running an i7 @ stock speeds with temps of -50 on a phase unit that has a max of 130w, people have said you'd have no room to overclock with. So does the phase unit shut off or something when it receives too much heat?

Sorry if this seems like a stupid question, as I said above, this is all new to me.
post #2 of 14
A shot in the dark for me because I'm not that knowledgeable on these things, but I assume that it'll have to work longer/harder to maintain it's ability to cool. So it will wear out earlier. But if it's not a 100% load at a 100% overclock all of the time, I'd say you're still good.
So sexy it Hz
(8 items)
 
  
CPUMotherboardGraphicsRAM
[i7 920 D0] [Asus P6T Deluxe V2] [EVGA GTX 1070 SC Gaming ACX 3.0] [12Gb PC3-16000 Kingston HyperX T1] 
Hard DriveMonitorPowerCase
[2x120GB Vertex2] [WD6401AALS] [WD15EARS] [WD30... [Dell 3007WFP] [Acer P191w] [TX850] [Silverstone FT02-BW] 
  hide details  
Reply
So sexy it Hz
(8 items)
 
  
CPUMotherboardGraphicsRAM
[i7 920 D0] [Asus P6T Deluxe V2] [EVGA GTX 1070 SC Gaming ACX 3.0] [12Gb PC3-16000 Kingston HyperX T1] 
Hard DriveMonitorPowerCase
[2x120GB Vertex2] [WD6401AALS] [WD15EARS] [WD30... [Dell 3007WFP] [Acer P191w] [TX850] [Silverstone FT02-BW] 
  hide details  
Reply
post #3 of 14
This would be your house



But seriously, i'm not sure.
post #4 of 14
Pretty sure it'd just raise temperatures, if it can keep -50 @ 100W load, 200W load would be around -25.

I could be wrong, though.
    
CPUMotherboardGraphicsRAM
3570k GA-Z77MX-D3H Palit Jetstream 680 4GB 4 X 2GB G.Skill Ripjaws X (1600MHz/CAS8 @ 1.5v) 
Hard DriveCoolingOSMonitor
60GB Corsair Force + 2TB RAID0 + 500GB Antec Kühler 620 w/AP-14 Windows 7 Professional x64 Dell U2711 (2560 x 1440) 
KeyboardPowerCaseMouse
Filco Majestouch (MX Blues) Corsair HX650 Lian Li PC-U6B Razer Deathadder 3.5G 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
3570k GA-Z77MX-D3H Palit Jetstream 680 4GB 4 X 2GB G.Skill Ripjaws X (1600MHz/CAS8 @ 1.5v) 
Hard DriveCoolingOSMonitor
60GB Corsair Force + 2TB RAID0 + 500GB Antec Kühler 620 w/AP-14 Windows 7 Professional x64 Dell U2711 (2560 x 1440) 
KeyboardPowerCaseMouse
Filco Majestouch (MX Blues) Corsair HX650 Lian Li PC-U6B Razer Deathadder 3.5G 
  hide details  
Reply
post #5 of 14
It will just continue to rise slowly and eventualy kill itself it is not tuned for a high enough of a load. That said you can run 250watts of heat for a unit tuned for 200 and it will be fine, temps might not be to great though.

As for saying there is no room to overclock a core i7 is just completely inacurate. Some older units might not be able to handle them at decent temps, but a decent sub $800 single stage will handle 275watts of heat at -25c or lower no problem.
    
CPUGraphicsRAMHard Drive
Intel q8300 gtx 470 8gb Intel X25-v 40gb + 750gb WD 
OSMonitorPower
Windows 7 Ultimate 64 bit 23" 1080p hp 650watt antec 
  hide details  
Reply
    
CPUGraphicsRAMHard Drive
Intel q8300 gtx 470 8gb Intel X25-v 40gb + 750gb WD 
OSMonitorPower
Windows 7 Ultimate 64 bit 23" 1080p hp 650watt antec 
  hide details  
Reply
post #6 of 14
Thread Starter 
Quote:
Originally Posted by d3str0y3r0fn00bs View Post
As for saying there is no room to overclock a core i7 is just completely inacurate. Some older units might not be able to handle them at decent temps, but a decent sub $800 single stage will handle 275watts of heat at -25c or lower no problem.
I was referring to a phase unit that was rated @ 130w max, people said that 130w max wouldn't be enough.

And thank you all for the feedback.
post #7 of 14
130w unit cant even hold a 4 core at stock speeds

if u hook up a i7 it will work but with really bad temps now the extra heat will make for a really high condensing temp that will make the compressor die really soon

and 800$ for a single stage is a rip off as it only has 300$ worth of parts in it
unless u go for a really well made cased unit
Be
(13 items)
 
  
CPUMotherboardGraphicsRAM
PhenomII940 X4 3.0Ghz BE asus m3a78-t BFG GeForce GTX 260 Overclocked MAXCORE patriot 6400 
Hard DrivePower
hitachi 1TB ultra 750 heavy duty 
  hide details  
Reply
Be
(13 items)
 
  
CPUMotherboardGraphicsRAM
PhenomII940 X4 3.0Ghz BE asus m3a78-t BFG GeForce GTX 260 Overclocked MAXCORE patriot 6400 
Hard DrivePower
hitachi 1TB ultra 750 heavy duty 
  hide details  
Reply
post #8 of 14
Replied to PM ... you can also reach me at s.dumper@comcast.net
My System
(15 items)
 
  
CPUMotherboardGraphicsGraphics
i5 2500k Biostar TZ77XE4 6950 6950 
RAMHard DriveCoolingOS
8gb - DDR3 main: 120gb SSD 830 + 3 1tb drives Air Win7 
MonitorPowerCase
3 x DELL ST242OL  OCZ 900W Lian-Li Custom 
  hide details  
Reply
My System
(15 items)
 
  
CPUMotherboardGraphicsGraphics
i5 2500k Biostar TZ77XE4 6950 6950 
RAMHard DriveCoolingOS
8gb - DDR3 main: 120gb SSD 830 + 3 1tb drives Air Win7 
MonitorPowerCase
3 x DELL ST242OL  OCZ 900W Lian-Li Custom 
  hide details  
Reply
post #9 of 14
In my experience, an overloaded phase change system will begin to lose control over the temperature. CPU temp will begin to creep up toward the positive, and eventually become positive, then high positive.
Edited by TyranosOCF - 2/13/11 at 3:28pm
post #10 of 14
A phase unit transports heat, it is tuned to move a certain amount of heat. And the max is based on the amount of liquid refrigerant that can be delivered.

To answer your question:

If the max amount of liquid refrigerant that can be delivered to the evaporator can hold only 200W and you put on 250W of heat, the following situation occurs.

You have a 10 gallon bucket.

The bucket has a pump hooked up to it that removes one gallon of water per minute.

Every minute you pour in half a gallon of water.

No issue, you are under your max wattage.

You add more load (and more water per minute).

Once you go anywhere past one gallon of water per minute, the pump is going to keep doing its best, but the bucket will begin to fill regardless.

So, the bucket will overflow.

Since we are talking energy or heat, your unit will overheat, as will your processor.

While many advertise units as 250W @ -XXC, they simply have verified the system to work at that point. Much of the time they're may be a little, maybe 10% more headroom above that point. However, going past that will start to fill the bucket.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Phase Change
Overclock.net › Forums › Cooling › Specialized Cooling › Phase Change › When Phase units fail