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[[File:MO-RA3.jpg|right|thumb|That's a chungus]]
[[File:MO-RA3.jpg|right|thumb|That's a chungus]]
The [https://shop.watercool.de/MO-RA3-Series MO-RA3] family of external radiators is a product of Germany's [https://watercool.de/ Watercool]. It is available in 360mm and 420mm models. The former natively supports nine 120mm fans; the latter natively supports nine [[140mm fans]] (18 on the Pro, which supports fans mounted on both front and back). At a mere 9 fins per inch, it does not require high-pressure fans to maximize performance, relying instead on sheer size.
The [https://shop.watercool.de/MO-RA3-Series MO-RA] family of external radiators is a product of Germany's [https://watercool.de/ Watercool]. It is available in sizes up to 600mm². The 360mm natively supports nine 120mm fans; the 420mm natively supports nine [[140mm fans]] (18 on the Pro, which supports fans mounted on both front and back). The Model-IV 400 employs 4 200mm fans, and the massive Model-IV 600 handles 9 200mm. At a mere 9 fins per inch, it does not require high-pressure fans to maximize performance, relying instead on sheer size.


Other large external radiators include the Alphacool NexXxoS and the Phobya G-Changer Xtreme NOVA.
Other large external radiators include the Alphacool NexXxoS and the Phobya G-Changer Xtreme NOVA.
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{| class="wikitable"
{| class="wikitable"
! Model !! Weight empty (kg) !! Dimensions (mm) !! Capacity !! Pipe rows || Cu (m)
! Model !! Weight empty (kg) !! Dimensions (mm) !! Capacity (mL) !! Pipe rows || Cu (m)
|-
|-
| 360 || 6.5 || 415x383x65 || || 72 || 28
| MO-RA3 360 || 6.5 || 415x383x65 || 1100 || 72 || 28
|-
|-
| 420 || 7.7 || 475.5x430x65 || || 80 || 36
| MO-RA4 400 || 8.7 || 500x452x75 || 1350 || ||
|-
| MO-RA3 420 || 7.7 || 475.5x430x65 || 1400 || 80 || 36
|-
| MO-RA4 600 || 15.9 || 700x662x75 || 3040 || ||
|-
|-
|}
|}


==Power==
==Power==
[[File:Mora3-night2.webp|right|thumb|all dressed up]]
An Arctic P-14 PWM PST RGB 140mm fan requires a maximum of 0.17A for the fan and 0.20A for the LEDs (all at 12V, so 2.04W and 2.4W respectively, 4.44W total). They provide daisy chaining:
An Arctic P-14 PWM PST RGB 140mm fan requires a maximum of 0.17A for the fan and 0.20A for the LEDs (all at 12V, so 2.04W and 2.4W respectively, 4.44W total). They provide daisy chaining:


{| class="wikitable"
{| class="wikitable"
! P-14s !! Fan watts || LED watts || Total
! P-14 RGBs !! Fan watts || LED watts || Total
|-
|-
| 3 || 6.12 || 7.2 || 13.32
| 3 || 6.12 || 7.2 || 13.32
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|-
|-
| 18 || 36.72 || 43.2 || 79.92
| 18 || 36.72 || 43.2 || 79.92
|-
|}
The ARGB version claims 0.4A for the 5V ARGB LEDS (2.04W and 2W respectively, 4.04W total, about 91% of the RGB variant).
{| class="wikitable"
! P-14 ARGBs !! Fan watts || LED watts || Total
|-
| 3 || 6.12 || 6 || 12.12
|-
| 6 || 12.24 || 12 || 24.24
|-
| 9 || 18.36 || 18 || 36.36
|-
| 18 || 36.72 || 36 || 72.72
|-
|-
|}
|}
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Desiring to source the most efficient power possible, I'll run a lengthy PCIe 6-pin cable out the back of my machine, capable of carrying at least 75W on its three 12V pins (6.24A). I'll then use a trivial adapter to take that to SATA or Molex, and thus be able to power nine PF-14s on the front, and nine NF-A14s on the back. I do not intend to put any pumps on the MO-RA3, as I already have three D5s in my workstation. My longest PCIe cables are 75cm long, with a 30cm PCIe-to-Molex adapter. This means I can't use the MO-RA3 more than about a meter away from my workstation. If I wanted to run it three meters away, I'd need to use external power (and cut longer tubes).
Desiring to source the most efficient power possible, I'll run a lengthy PCIe 6-pin cable out the back of my machine, capable of carrying at least 75W on its three 12V pins (6.24A). I'll then use a trivial adapter to take that to SATA or Molex, and thus be able to power nine PF-14s on the front, and nine NF-A14s on the back. I do not intend to put any pumps on the MO-RA3, as I already have three D5s in my workstation. My longest PCIe cables are 75cm long, with a 30cm PCIe-to-Molex adapter. This means I can't use the MO-RA3 more than about a meter away from my workstation. If I wanted to run it three meters away, I'd need to use external power (and cut longer tubes).


I'll need to run two tubes out to the MO-RA3, but beyond coolant and power, what is necessary? The RGB and PWM of fans must be managed. If I have any temperature or flow sensors on the MO-RA3, they'll need hookups. It ought be possible, however, to control all this from a device local to the MO-RA3. Many people use Aquacomputer products such as the [https://shop.aquacomputer.de/product_info.php?products_id=3420 Splitty] in this role, and run data over a USB or Aquabus cable. I'd instead like to use a SBC with 2.4GHz 802.11n. I will likely break the shield off a [[CODI6]] to get the PWM+RGB headers.
Actually, instead I just used a standard 12V AC adapter. A 120W supply can comfortably handle nine fans, two D5 pumps, an active sensor, and microcontrollers.
 
I'll need to run two tubes out to the MO-RA3, but beyond water and power, what is necessary? The RGB and PWM of fans must be managed. If I have any temperature or flow sensors on the MO-RA3, they'll need hookups. It ought be possible, however, to control all this from a device local to the MO-RA3. Many people use Aquacomputer products such as the [https://shop.aquacomputer.de/product_info.php?products_id=3420 Splitty] in this role, and run data over a USB or Aquabus cable. I'd instead like to use a SBC with 2.4GHz 802.11n. I will likely break the shield off a [[CODI6]] to get the PWM+RGB headers.
 
[https://dewire.shop/products/relay-420 Dewire] out of the Netherlands has some very nice linear PWM splitters, very suitable for use in the MO-RA3.


===Daisy chaining===
===Daisy chaining===
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* female1 is unused
* female1 is unused


the "gender adapter" here is just a 4-pin jumper.
the "gender adapter" here is just a 3- or 4-pin jumper (for ARGB and RGB, respectively).


But that's not how it's expecting to hook up; it expects you to use the female receptacles at the outlay. Thankfully, there's a little less than 25mm of gap on one side of the grill. So long as all your wires end up there, they'll be hidden (this gap has a solid cover). So...
But that's not how it's expecting to hook up; it expects you to use the female receptacles at the outlay. Thankfully, there's a little less than 25mm of gap on one side of the grill. So long as all your wires end up there, they'll be hidden (this gap has a solid cover). So...
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* [https://www.titanrig.com/blog/post/watercools-mo-ra3-radiator-system The MO-RA3 PC Radiator System] from Titanrig, 2022-03-28
* [https://www.titanrig.com/blog/post/watercools-mo-ra3-radiator-system The MO-RA3 PC Radiator System] from Titanrig, 2022-03-28
* [https://shop.watercool.de/mediafiles/Manuals/MA_MO-RA3_A5.pdf MO-RA3 assembly guide]
* [https://shop.watercool.de/mediafiles/Manuals/MA_MO-RA3_A5.pdf MO-RA3 assembly guide]
==See also==
* [[inaMORAta]]
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