Hi
I purchased the OcUK H²Flo Extreme Liquid Dual Fan CPU Cooler when they were on special offer at £43.99 last week (now £64.99) with a view to following the footsteps of others in fitting it to a graphics card as per another Overclocking forum. A couple of people on here have used the Antec Kúhler H2O 620 CPU Watercooler but this has only a 'single' thickness radiator whereas the OcUK Extreme has a double thickness radiator which should give me better cooling in theory so I thought.
This was to be applied to a EVGA GTX 580 DS Superclocked card. It comes with a custom cooler (which is actually poor IMHO) and I had fitted a reference cooler to it which I got from an OCUK forum member. So I decided to use the reference cooler for the modification.
The card to be modified
Coolermaster Elite 311. I downsized from a Coolermaster 690 due
to an impending youngster arrival and having to switch rooms around.
Cable routing hmmm (dont look!).
Where to mount the double thickness rad hmmm.
Decided to mount it at the front for best cooling so out
goes the hard drive tray - bit of drilling and hacksaw hacking
Relocation of Hard Drives
Defrock the GTX 580
Using the existing fan and memory/vrm heatsink. Hit a slight
snag in that the two sets of holes located at the four corners
of the GPU have raised surrounds which need to be ground off
or the copper plate on the CPU block will not touch the GPU.
This is the problem of having a square block unlike the Antec 620
which is round and probably misses them.
OcUK H²Flo Extreme at the ready
Coo look what I found
The tie wrap method of fastening the pump block onto the card.
I cut a hole out of the cowel to accomodate the pipes and
top of the pump and finished it off with thermal tape as
a temporary measure. This maybe replaced by a window.
Fit everything back into the case. Due to the pipes being
too short I made a fan cowel with only the Apache nearest
the radiator containing a fan the front two are fanless.
A bit of tidying up.
I decided to run the pump off my fan controller so I could
see the RPM it was doing and also if I wanted I could slow
the pump down. As it was I just left it on maximum as you
can not hear it.
Switch on the PC and get some temps !
Reference Cooler v OcUK H²Flo Extreme
My GTX 580 has been overclocked to 850mhz / 1700mhz / 2200mhz so this is what I tested at. Stock volts.
At Idle 40c / 28c
Full load
Furmark 81c / 61c
UniEngine 3.0 85c / 68c
Gaming 77c to 81c / 51c to 55c (depends on game really)
So these are my initial findings and I am well and pretty chuffed. £43.99 for a GPU cooler which IMHO is better/cheaper than the Arctic Cooling Air or Hyrdro.
Apart from the slight snag of the raised bolt holes the only other issue was the square pump. Its harder to fit than a circular one. The screw holes sit right over the corners of the pump where on a round one it would probably miss. I also think it would be difficult to make a bracket for it too but I might have a go although at the moment there is no reason. I would have also liked to have lapped the copper plate on the bottom of the pump but I could not wait really to try it.
So it works a treat. The plus side over the Antec 620 was the double thick radiator. The downside is the square pump and shorter pipes.
Well done to OCUK for the good value GPU cooler!
I purchased the OcUK H²Flo Extreme Liquid Dual Fan CPU Cooler when they were on special offer at £43.99 last week (now £64.99) with a view to following the footsteps of others in fitting it to a graphics card as per another Overclocking forum. A couple of people on here have used the Antec Kúhler H2O 620 CPU Watercooler but this has only a 'single' thickness radiator whereas the OcUK Extreme has a double thickness radiator which should give me better cooling in theory so I thought.
This was to be applied to a EVGA GTX 580 DS Superclocked card. It comes with a custom cooler (which is actually poor IMHO) and I had fitted a reference cooler to it which I got from an OCUK forum member. So I decided to use the reference cooler for the modification.
The card to be modified
Coolermaster Elite 311. I downsized from a Coolermaster 690 due
to an impending youngster arrival and having to switch rooms around.
Cable routing hmmm (dont look!).
Where to mount the double thickness rad hmmm.
Decided to mount it at the front for best cooling so out
goes the hard drive tray - bit of drilling and hacksaw hacking
Relocation of Hard Drives
Defrock the GTX 580
Using the existing fan and memory/vrm heatsink. Hit a slight
snag in that the two sets of holes located at the four corners
of the GPU have raised surrounds which need to be ground off
or the copper plate on the CPU block will not touch the GPU.
This is the problem of having a square block unlike the Antec 620
which is round and probably misses them.
OcUK H²Flo Extreme at the ready
Coo look what I found
The tie wrap method of fastening the pump block onto the card.
I cut a hole out of the cowel to accomodate the pipes and
top of the pump and finished it off with thermal tape as
a temporary measure. This maybe replaced by a window.
Fit everything back into the case. Due to the pipes being
too short I made a fan cowel with only the Apache nearest
the radiator containing a fan the front two are fanless.
A bit of tidying up.
I decided to run the pump off my fan controller so I could
see the RPM it was doing and also if I wanted I could slow
the pump down. As it was I just left it on maximum as you
can not hear it.
Switch on the PC and get some temps !
Reference Cooler v OcUK H²Flo Extreme
My GTX 580 has been overclocked to 850mhz / 1700mhz / 2200mhz so this is what I tested at. Stock volts.
At Idle 40c / 28c
Full load
Furmark 81c / 61c
UniEngine 3.0 85c / 68c
Gaming 77c to 81c / 51c to 55c (depends on game really)
So these are my initial findings and I am well and pretty chuffed. £43.99 for a GPU cooler which IMHO is better/cheaper than the Arctic Cooling Air or Hyrdro.
Apart from the slight snag of the raised bolt holes the only other issue was the square pump. Its harder to fit than a circular one. The screw holes sit right over the corners of the pump where on a round one it would probably miss. I also think it would be difficult to make a bracket for it too but I might have a go although at the moment there is no reason. I would have also liked to have lapped the copper plate on the bottom of the pump but I could not wait really to try it.
So it works a treat. The plus side over the Antec 620 was the double thick radiator. The downside is the square pump and shorter pipes.
Well done to OCUK for the good value GPU cooler!
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