Obsidian 1000D dual system - one loop?

LoneTraveler

LoneTraveler

LoneTraveler

Associate
Joined
25 Sep 2020
Posts
11
Good afternoon,

First time poster and I am hoping for insight before my first ever dual system water-cooled build.

I have just bought a Corsair Obsidian 1000D and aim to house two systems;
1) Main Windows system with 14th gen Intel and 5000 series NVIDIA card (when released), so it will be several months before that is started.
2) Second system (mini-ITX) running my unRaid NAS.

Ultimately I want both systems water-cooled, however until my main system is available, the case will house just the unRaid system that I currently have in a separate case in the loft. The only change will be the transfer of the NAS system on to a GIGABYTE Z590I AORUS ULTRA mini-ITX motherboard to make it fit into the Obsidian. It will remain air-cooled until both systems are finished so that I can watercool everything in one go.

My question is, will I have any issues watercooling two systems on the one loop? The NAS system will be online much more than the main system.

I had planned to stick with all Corsair watercooling and hardware simply because it is a Corsair case with a Commander Pro unit, but if consensus says otherwise I'm happy to switch.

I am certainly open to any advice and/or suggestions however.

Many thanks.
 
the consensus will probably be
dont stick to all corsair
issues might be pump and fan speed control
if both are on one loop
then your pump or pumps will be connected to a pwm header
on one or the other boards
same with your fans
how will you control their speed if its not the board
they are connected to thats running?
some stuff will default to max speed if no pwm signal
some defaults to minimum speed
personally i would prefer 2 loops
and 2 pumps
may even think about 2 loops with a gate valve between them
so if 1 pump fails you could open the gate valve/ball valve
and still carry on
though still leaves fan control issue
unless you use some sort of physical fan controller
just my thoughts anyway and i have never done a dual system
so might be totally wrong
but someone in here will have done one
 
Thank you both for taking the time to reply, it certainly gives me a lot to think about.

As for controlling the flow speed, I was not aware that that was a thing, I believed it was a one speed "set and forget" type thing for watercooling. I'll have to read up more. If it is the motherboard that controls the flow, I may need to opt for a dual cooling setup in that case.

Regarding the consensus to not use Corsair for all everything, would I have issues in connecting other makes of components to the Commander Pro, or does the community have a "go to" controller box to use instead?
 
Older pumps may have a manual speed selector
Controllable on the fly is better
Not so much for flow rates
Since yes usually you could set say 75% rpm for the pump
And going any higher may give very negligible gain
It's more for noise reasons
Pumps may resonate/vibrate/make noise however you want to call it
At a certain rpm but not at another even if another rpm is higher the noise may stop
So once the systems running its useful being able to alter/tweak pump rpm

The commander pro (actually got one somewhere but don't remember exactly)
May lock you into using corsair proprietary connectors for fans
Can't remember about led strips
And never personally used any of the corsair watercooling parts like pump or rads ,blocks etc
But usually made by other companies then stick a corsair logo and premium on there
Anything using standard 4 pin pwm and standard led connectors is always better--just my opinion
Since those can just be put on a simple splitter if required
Lot of people like aquacomputer controllers
Thing like there octo or Aquaero as an example

I like lian li fans like Al,sl
Or the new phanteks t30
Because of the interlocking ability meaning way less wires
But again you may need their control box/proprietary connectors
Though think phanteks may have adapters to change to standard connectors
Other things to consider would be rgb control
If you stick to only say corsair then icue might be able to control it all
Though not sure about motherboard leds
Mines a whole jumble of 6 different manufacturers
So for led control I need to use signalrgb
As trying to use 6 different softwares just conflicts and doesn't work
 
LoneTraveler said:
As for controlling the flow speed, I was not aware that that was a thing, I believed it was a one speed "set and forget" type thing for watercooling. I'll have to read up more. If it is the motherboard that controls the flow, I may need to opt for a dual cooling setup in that case.
Click to expand...

Your instinct is correct you don't need to mess about with having the motherboard control pump speed. Just set to to whatever noise level you can tolerate and let the fans controller adjust te cooling performance as needed.

Is this thing going to have two separate power supplies for the two systems? If not, how will you go about powering down the main system and leaving the nas system going? Do sleep states allow for this sort of thing if only using one power supply, I don't know.

Edit: Checked this case and yeah it says you can fit two psu's, assuming it being a normal sized one for the main system and a smaller jobbie for the sub-system. So, for the water cooling side of things, assuming it will be the smaller sub system which will be powered on all the time, then you'll just need to make sure that smaller psu has enough juice for the water cooling as well. Of course, this means that you pump will be powered 24/7 potentially if this is going to be a server of some sort. so there is that to consider in how long the pump will be expected to last compared to an average system.
 
Last edited:
Few things to add.

D5 pump should easily push the water through and they last a long long time unless you run them dry or with the water too hot. I have a barrow flow metre in my loop that also shows the water temp. It is reassuring to actually see the waterflow and I have 1.7l/min at just 20% speed on my DDC pump. I keep the flow constant at all times and just adjust the radiator fans to expel heat. Is also nice to see the water temp and it is the favourite part of my build.

I have a mix of corsair and Alphacool fittings in my loop and Alphacool must be the oem suipplier for Corsair because they are practically identical. Alphacool are less expensive than Corsair so you should be able to save some money if you order them.

Do not forget a drain port.

Good luck with the RGB. I thought Corsairs ICUE was the worst software I had ever used until I tried to use signalrgb. All RGB software sux but sticking to a single brand so you only have to suffer 1 does lead to less conflicts.
 
Firstly, thank you to everyone who has replied, you have all been extremely helpful.

Lots for me to think about and look into.

To answer Bubo's question, yes I was going to have two PSU's, however looking at Mcnumpty2323's Phantek PSU suggestion, I'm now considering that. I'll be ensuring that everything that goes in to this build is geared towards water cooling.

I've always wanted a water cooled, top of the line machine, so thought I'd take my time doing this right. Just ordered a "GIGABYTE Z590I AORUS ULTRA" as I needed a mini-ITX board for my NAS system in the new case, once I've transferred over my current i9-10900K and RAM from my current NAS system, I'll utilise air cooling until I have the second (main) system also assembled in the case so I can water cool everything at the same time to ensure aesthetics are on point.
 
Last edited:
the phanteks is a quality psu with long warranty
made by seasonic i think
for people who already have 2 x psus i think
they also do a splitter board
pretty sure theres some dual systems in watercooled gallery section
may be useful to look at
though cant remember user names who posted them
 
Mcnumpty2323 said:
the phanteks is a quality psu with long warranty
made by seasonic i think
for people who already have 2 x psus i think
they also do a splitter board
pretty sure theres some dual systems in watercooled gallery section
may be useful to look at
though cant remember user names who posted them
Click to expand...

I'll certainly give it a look, thank you. I didn't even know there was such a PSU. If it can power my whole setup then I think a dual PSU makes more sense.....more room then for water cooling goodies like a flow metre that was mentioned.

On a side note, I'm liking the colour scheme of this;
https://youtube.com/shorts/Vn7aHOt79t4?feature=share
 
Last edited:
probably a lot of people not aware of it
bit of a niche product
and actually think given the quality and long warranty
that its not unreasonably priced either
yes one psu does mean 1 point of failure can put both systems offline
whereas 2 psus one fails the other system can still be used
but 12 year warranty shows their faith in the product
 
In my dual system build going to be running a Phanteks Revolt X PSU, and then an Aquacomputer OCTO controller. The configuration is saved directly to the controller, so it'll work fine even if the main system it's plugged into is turned off. This is also because I'll base my pwm curves on liquid temp which is also monitored by the OCTO.
 
You must log in or register to reply here.
Back
Top Bottom