Picking the right radiators for my build

[Felixtheflash]

This is my first thread here and i do apologize if this has been answered in another thread but tried searching for a good answer but couldnt find one.(also english is not my first language, so bear with me )

Im going to start building my first ever custom loop pc build soon based in the the O11D.
And i was thinking of doing a 360 on top and a 360 on the bottom.
But I'm not sure if i need both 360's, its going to cool a msi rtx3080 ventus oc and a 5800x on a Asus x570-f motherboard.

Maybe a single thick rad might do the trick on its own? and was looking at the nexxos ut60 xflow ( https://www.alphacool.com/shop/radi...t60-full-copper-x-flow-360mm-radiator?c=20545) mounted in the top.
Question is do these kind of thick rads need special fans? Can i use the NFF12 fans i allready have in simple push configuration?

 

[Felixtheflash]

I'd double check your clearance iof you going to mount a thick rad in the roof, you may have issues with the Rad and fans blocking into the ram slots.
The thicker Alphacool rads have a low Fins Per Inch, so don't really need specialized fans, you can Push, with a low rpm fan.
x2 360 rads is good idea if you are planning to overclock your gpu and cpu.
Good luck with your build

Thanks for the advise, seems like i have 8.5cm before i hit the vrmheatshields of my Mobo. thinking maybe a st30 xflow in the top and a normal st30 bottom rad might be better.
I see these have higher fin density but still should be fine with Noctua Nff12 in push or pull?

 

[Felixtheflash]

But is one 60mm roughly the same as two 30mm rads og same length? In cooling performance. And i would Imagine i could run the fans at lower speeds on thinner rads?

 

[Felixtheflash]

stock nemesis rads won't fit in your case as they are too wide. You'd need the LS OE versions.

Two 30mm rads will provide more cooling than a one 60mm rad.

By LS oe you mean these types? *Link removed*
If so then great They are actually instock at one of the vendors that sell watercooling gear in my country (norway). Was looking at ek and alphacool but i see many recomend hwlabs black ice radiators and they are cheaper.

 

[Felixtheflash]

Ive read that corsair radiators use HWlabs, and i was looking at the xr7 (thicker rad), how much of a difference in temp might using one thick and one thin rad be over using two thin?
30mm vs 50mm that is.
And im only going to use single fans on the rads, no push pull.

 

[Felixtheflash]

Just thought id say thank you to everyone that gave me som pointers, i did my first build last night.
ended up with a xr5 and xr7 radiator from corsair.
Right now im running it for a couple of hours checking for leaks. I did do a leaktest with EK's pressure tester, so i dont know if i need to let the system run for 24hours before connecting everyting to power.
Other than that, i think i need to use hardline tubing for a couple of runs, especially the ones that come from the bottom rad into the flow monitor and into the gpu.
Had to use a small piece of soft tubing to hold the tubing up
And i think il use some 45 angled adapters when i do that for the cpu block.

 

[Felixtheflash]

In Norway where I live the price was the same. And Corsair was easier to get ahold of.

 

[Felixtheflash]

If there's anything anyone with a custom loop knows is that there isn't such thing as the built being complete.

Well the build is a done as it can be for now, still missing a few bits. But im happy with it beeing my first time doing a custom loop.
I need to get som hardline tubing and swap out the runs going from bottom rad into the 90degree and from the flowmonitor to the gpu, but that will have to wait.

 

[Felixtheflash]

Looks fantastic! Almost like faux hard tubing with that nice straight run to the gpu

Thanks
That was my intention, but the tubing is abit to soft so it bends :\

 

[Felixtheflash]

The little cheat midway is barely noticeable. You couldn't trim and stretch the tubing to get it working without that though? It might be rather hard to get it on the fittings, but those EK compression fittings are a very snug fit so I don't think leaks would be a risk (at least with the Duraclear I used). I've not used the ZMT though so don't know exactly how soft that is. The clear is fairly stiff.

The problem with doing that is that it pulls the vertical tube more to the towards the gpu.

On another note, I got my rgb cable for the waterblock today.. dont know if i like the rgb on this barrow block. Its abit too bright.
Its hard to show with a photo, tried turning all the lights of to show it of.

 

[Felixtheflash]

It certainly does dwarf the rest of the lighting in the case! Can you not dim it at all?

Not sure, i cant seem to find any setting for dimming it in armory crate.. but then again.. armory crate recognizes the reservoir, gpu and cpu block as one RGB strip, so if i could dimm it, the gpu and cpu block would be even lower.
I might try to remove the rgb strip next time I take the system apart and see if i can use some paint or something on the LEDs directly.

 

[Felixtheflash]

Have you got aura installed? On some of the modes it has a brightness setting which might help. Not sure what to do about the fact it isn't recognising the devices properly though, are they all connected to a single header?

No havent tried aura. I Thought armory crate had replaced it. Each unit is connected to its own header.

 

[Felixtheflash]

So i finnally bought som hardtubing and tried to fix the sagging tubing from the flow monitor into the gpu block.
Used PETG tubing from EKWB and spray painted it matte black (didnt turn out as matte as i wanted though)
Everything went well, except i managed to pull a wire loose from the rgb strip on the gpu block.. wich was a PIA to fix, but now its fixed.

Dont think i will change the setup until the new AMD cpu's come out sometime next year.