Basically, I cannot put together a “perfect” system for you, as it is currently not clear what exactly needs to be cooled. You have already selected GPU coolers, and I assume the CPUs should also be cooled. However, it is unclear what should happen with the remaining components, such as hard drives, HDDs, etc. For some of these components, we do not offer coolers.
I also cannot say how much space is actually available in the mentioned case for radiators, reservoir, and pump. You would need to check this yourself. There are over 4,000 cases on the market, and we cannot test every single one.
Regarding the reservoir, you are generally free to choose any model, as long as it fits inside the case and is combined with an Apex or D5 pump. For the CPU cooler, you can use the XPX Pro. There are several variants available, and it fits the socket.
You need at least two fittings per component. The tubing size you use is up to you. A common size is 13/10 mm, while in servers we usually use TPV tubing in 12.7/7.6 mm. The fittings then need to match the tubing size.
For the radiator surface, I cannot give a binding recommendation without checking the case in detail. With this amount of heat output, you should use at least 3x 360 mm ST30 radiators. However, this setup would not be particularly quiet. Therefore, I would rather consider an external solution such as a Nova station, for example with an external radiator like article 14349.
So, in general, you will need to check yourself what fits into your case and which components you actually want to cool. Unfortunately, I cannot take over this planning completely for you.
Once you have put together a configuration, I can give you tips and advice. That is no problem.
Needs cooling:
2 x Xeon Platinum 8273CL LGA3647
4 x NVIDIA TESLA-V100-32G FHHL PCIe Cards (I haven't selected GPU coolers yet.)
Possibly the Motherboard chip-set (AI server under constant heavy load)
Product Name COSMOS ALPHA
Model Number C700-KGNN-S00
Materials - Side Panel (Left / Right) Tempered Glass / Metal
Dimensions (L x W x H) 669 x 330 x 639 mm (Incl. Protrusions), 579 x 260 x 582 mm (Excl. Protrusions)
Volume 88 L (no panel / protrusions / feet)
Volume 140 L (with panel / protrusions / feet)
Motherboard Support Mini-ITX / Micro-ATX / ATX / E-ATX / EEB
Power Supply Support ATX
PCI Expansion Slots 8
Drive bay support - 5.25" Drive Bays 0
Drive bay support - 2.5" / 3.5" Drive Bays (or SSD) 2 or 2 (CPU Cooler under 165 mm)
Preinstalled Drive Bays - 5.25" Drive Bay 0
Preinstalled Drive Bays - 2.5" / 3.5" Drive Bays (or SSD) 2 or 2 (CPU Cooler under 165 mm)
Preinstalled Fan (Fan dim./ Fan speed/ LED color/ Fan Connector ) - Front 2x 200x38 mm (Non-ARGB)
Preinstalled Fan (Fan dim./ Fan speed/ LED color/ Fan Connector ) - Rear 1x Mobius 120x25 mm (Non-ARGB)
Fan Support - Front 3x 120mm / 3x 140mm / 2x 200mm
Fan Support - Top 3x 120mm / 2x 140mm / 2x 180mm / 2x 200mm
Fan Support - Rear 3x 120mm
Fan Support - Bottom 3x 120mm / 2x 140mm / 2x 180mm / 2x 200mm
Fan Support - Side Mount 3x 120mm / 3x 140mm / 2x 180mm / 2x 200mm
Radiator Support - Top 120 / 140 / 240 / 280 / 360 mm (maximum thickness clearance 93mm)
Radiator Support - Bottom 120 / 140 / 240 / 280 / 360 mm (maximum thickness clearance 93mm)
Radiator Support - Side Mount 120 / 140 / 240 / 280 / 360 / 420 / 3x360 mm (maximum thickness clearance 80mm)
Dust Filters Yes, Removable Filters
Clearances - CPU Cooler 186 mm
Clearances - Power Supply 240 mm
Clearances - Graphics Card 400 mm
Cable Routing - Behind Motherboard Tray 53 mm
Included Accessories VGA card holder
Included Accessories Decorative cover
Included Accessories Right side cable cover
Size Full Tower