Overclock.net › Forums › Cooling › Cooling Experiments › Cascade Phase-Change?
New Posts  All Forums:Forum Nav:

Cascade Phase-Change?

post #1 of 34
Thread Starter 
what exactly is Cascade Phase change?

and is it worth it? I mean the Mach II can reach -40(or colder) degrees so my question is, whouldent core voltage become an issue before temps? i mean why do you need -80 degrees when you can OC that far do to your voltage anyway?

am I missing somthing?
    
CPUMotherboardGraphicsRAM
x2 Next Gen AMD quad-core Next Gen AMD 4x4 (please let it happen!) 4x GPU with Fusion/Stream 4GIG (2 Gig/CPU) (8gig maybe?) 
Hard DriveOSCase
Raptor for OS, 400GB or so for everything else... Linux Ubuntu ATRIX CSCI-G8022C-C43 Blk 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
x2 Next Gen AMD quad-core Next Gen AMD 4x4 (please let it happen!) 4x GPU with Fusion/Stream 4GIG (2 Gig/CPU) (8gig maybe?) 
Hard DriveOSCase
Raptor for OS, 400GB or so for everything else... Linux Ubuntu ATRIX CSCI-G8022C-C43 Blk 
  hide details  
Reply
post #2 of 34
you need that much if your gunna put like 1.8v through a 90nm process.
Studio Machine
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Q6600 @ 2.6 Ghz I forget. nVidia 8400 2GB DDR2 
Hard DriveOptical DriveOSMonitor
1x320GB, 1x750GB CD/DVD+-RW Windows Vista Ultimate SP1 & Arch Linux 64bit 19inch Acer X193W 
KeyboardPowerCaseMouse
Logitech UltraSlim Pathetic 350w Cube 2 Quid Bargain Bin Thing 
  hide details  
Reply
Studio Machine
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Q6600 @ 2.6 Ghz I forget. nVidia 8400 2GB DDR2 
Hard DriveOptical DriveOSMonitor
1x320GB, 1x750GB CD/DVD+-RW Windows Vista Ultimate SP1 & Arch Linux 64bit 19inch Acer X193W 
KeyboardPowerCaseMouse
Logitech UltraSlim Pathetic 350w Cube 2 Quid Bargain Bin Thing 
  hide details  
Reply
post #3 of 34
In terms of the conceptual differences... A cascade works by first condensing a gas at room temperature. There are many choices as to which gas can be used, and essentially, any gas that can be condensed at room temperature at a reasonable pressure could be used.

The condensed gas then evaporates in the "heat exchanger". Now, all that is handled by the first compressor. The second compressor is charged with a different gas, generally one that cannot be condensed at room temperature. This gas is selected based on a number of factors, but generally a gas with a boiling point between -80C and -110C is used, since it is usually possible to condense gasses in that range with moderate pressures around -20C to -40C.

The second stage gas goes through the heat exchanger as well, where it is condensed by the cold environment created by the evaporation of the first stage gas. Then the condensed second stage refrigerant moves on to the "evap" of the system, which is what sits on top of the CPU.

...

An autocascade works on the same principle, but instead of having two compressors, one compressor is charged with both gasses. The first and second stage gasses both pass through the "condenser" in the system, but only the first stage gas will actually condense at room temperature. The gasses then go to a phase seperator, where (ideally) the liquid first stage refrigerant is seperated from the gaseous second stage refrigerant. The liquid is then sent to one part of the heat exchanger, where it evaporates, adn the gas is sent to another part of the heat exchanger, where it is condensed by the evaporation of the first stage.

From there it is basically the same as a normal cascade.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
C2D E6700 "ES" Lapped Gigabyte DQ6 XFX 7950GX2 G.Skill PC6400 2GB-HZ 
Hard DriveOSMonitorKeyboard
WD Caviar SE16 250GB Microsoft XP / Kubuntu BenQ 20.1 LCD Saitek Eclipse Blue 
PowerCaseMouse
FSP Group FX600-GLN Lian Li PC-7B Logitech G7 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
C2D E6700 "ES" Lapped Gigabyte DQ6 XFX 7950GX2 G.Skill PC6400 2GB-HZ 
Hard DriveOSMonitorKeyboard
WD Caviar SE16 250GB Microsoft XP / Kubuntu BenQ 20.1 LCD Saitek Eclipse Blue 
PowerCaseMouse
FSP Group FX600-GLN Lian Li PC-7B Logitech G7 
  hide details  
Reply
post #4 of 34
It is just for extreme circumstances. Don't even worry about it. If you have extreme cash though, you can throw it at one of a select few over at XtremeSystems and they might build one for you, but it won't be worth it.
post #5 of 34
Thread Starter 
Quote:
Originally Posted by The_Jester
you need that much if your gunna put like 1.8v through a 90nm process.
is that even safe? lol

well are their pre made, cascade systems? one that would fit under my case like a mach II even if its taller, and have two tubes like the Mach II Sli?

or can I rig one with two Mach II's?

if not im not all that worried about it

EDIT: this goes in the Phase Change forum huh?
    
CPUMotherboardGraphicsRAM
x2 Next Gen AMD quad-core Next Gen AMD 4x4 (please let it happen!) 4x GPU with Fusion/Stream 4GIG (2 Gig/CPU) (8gig maybe?) 
Hard DriveOSCase
Raptor for OS, 400GB or so for everything else... Linux Ubuntu ATRIX CSCI-G8022C-C43 Blk 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
x2 Next Gen AMD quad-core Next Gen AMD 4x4 (please let it happen!) 4x GPU with Fusion/Stream 4GIG (2 Gig/CPU) (8gig maybe?) 
Hard DriveOSCase
Raptor for OS, 400GB or so for everything else... Linux Ubuntu ATRIX CSCI-G8022C-C43 Blk 
  hide details  
Reply
post #6 of 34
Cascades are large too large to to fit under a case...... Autocascades are much smaller because of the needing of only 1 compressor but still large
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
C2D E6700 "ES" Lapped Gigabyte DQ6 XFX 7950GX2 G.Skill PC6400 2GB-HZ 
Hard DriveOSMonitorKeyboard
WD Caviar SE16 250GB Microsoft XP / Kubuntu BenQ 20.1 LCD Saitek Eclipse Blue 
PowerCaseMouse
FSP Group FX600-GLN Lian Li PC-7B Logitech G7 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
C2D E6700 "ES" Lapped Gigabyte DQ6 XFX 7950GX2 G.Skill PC6400 2GB-HZ 
Hard DriveOSMonitorKeyboard
WD Caviar SE16 250GB Microsoft XP / Kubuntu BenQ 20.1 LCD Saitek Eclipse Blue 
PowerCaseMouse
FSP Group FX600-GLN Lian Li PC-7B Logitech G7 
  hide details  
Reply
post #7 of 34
Thread Starter 
even if its very tall? lol that stinks
    
CPUMotherboardGraphicsRAM
x2 Next Gen AMD quad-core Next Gen AMD 4x4 (please let it happen!) 4x GPU with Fusion/Stream 4GIG (2 Gig/CPU) (8gig maybe?) 
Hard DriveOSCase
Raptor for OS, 400GB or so for everything else... Linux Ubuntu ATRIX CSCI-G8022C-C43 Blk 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
x2 Next Gen AMD quad-core Next Gen AMD 4x4 (please let it happen!) 4x GPU with Fusion/Stream 4GIG (2 Gig/CPU) (8gig maybe?) 
Hard DriveOSCase
Raptor for OS, 400GB or so for everything else... Linux Ubuntu ATRIX CSCI-G8022C-C43 Blk 
  hide details  
Reply
post #8 of 34
An autocascade MAY fit if you get the right guy to make it.... But still it will not fit the dimensions of any case
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
C2D E6700 "ES" Lapped Gigabyte DQ6 XFX 7950GX2 G.Skill PC6400 2GB-HZ 
Hard DriveOSMonitorKeyboard
WD Caviar SE16 250GB Microsoft XP / Kubuntu BenQ 20.1 LCD Saitek Eclipse Blue 
PowerCaseMouse
FSP Group FX600-GLN Lian Li PC-7B Logitech G7 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
C2D E6700 "ES" Lapped Gigabyte DQ6 XFX 7950GX2 G.Skill PC6400 2GB-HZ 
Hard DriveOSMonitorKeyboard
WD Caviar SE16 250GB Microsoft XP / Kubuntu BenQ 20.1 LCD Saitek Eclipse Blue 
PowerCaseMouse
FSP Group FX600-GLN Lian Li PC-7B Logitech G7 
  hide details  
Reply
post #9 of 34
This is a Cascade:



Now see why it won't fit?
post #10 of 34
And thats a cramped one lol
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
C2D E6700 "ES" Lapped Gigabyte DQ6 XFX 7950GX2 G.Skill PC6400 2GB-HZ 
Hard DriveOSMonitorKeyboard
WD Caviar SE16 250GB Microsoft XP / Kubuntu BenQ 20.1 LCD Saitek Eclipse Blue 
PowerCaseMouse
FSP Group FX600-GLN Lian Li PC-7B Logitech G7 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
C2D E6700 "ES" Lapped Gigabyte DQ6 XFX 7950GX2 G.Skill PC6400 2GB-HZ 
Hard DriveOSMonitorKeyboard
WD Caviar SE16 250GB Microsoft XP / Kubuntu BenQ 20.1 LCD Saitek Eclipse Blue 
PowerCaseMouse
FSP Group FX600-GLN Lian Li PC-7B Logitech G7 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Cooling Experiments
Overclock.net › Forums › Cooling › Cooling Experiments › Cascade Phase-Change?