800D Extra Rad Placement

SirConfused

SirConfused

SirConfused

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3 Feb 2009
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950
So after a load of reading I'm coming here for some opinions. I'm looking at putting another rad in my 800D as the 360 I've got in there at the moment is highly unlikely to cut the mustard with a new nvidia 30 series.

I've currently got the 360 in the top of the case and I'm thinking about dropping a 140 in somewhere, with the choises looking like a pull out the back or a push into the case from the bottom intake. Reading suggests anecdotally that some people have seen temps get worse with a rad on the bottom intake but I'm not convinced.

Any opinions would be appreciated.

Thanks
 
Lol exact same as me albeit 700D and 3080 FTW3 on preorder.
Got a thick triple xspc rad up top.

I was playing around with the case today, think easiest is going to be an alphacool radiator at the back 140mm intake or exhaust.

Alphacool as the inlets are closer together just as are the holes for the tube exits at the top of the case.

The underside of the alphacool also has a drain port.

I essentially already have mock up of an external 140mm rad in that I am using a gutted 33mm thick fan as an external shroud/spacer as the enloop fans make a noise when right up against the grille. It will look only slightly janky to have an external rad, I generally don't like the look though.

Will probs need 45 degree rotaries on the external rad or connections to route it backward 180 degrees.

As you say bottom intake can be done too without a problem, just have to squash those PSU rats nest cables down!

That will then become lowest point in loop. As for what's best for temps I theorise not too much a difference with either config but I don't know.

You could even do both I suppose?!
 
This is what I did with a 700D, if you don't mind chopping up your case a bit. Probably would be harder to do with an 800D though, given the hot swap bays and associated gubbins, but I have seen similar mods on an 800D, usually with the front rad flush with the front of the case, compared to this.

9jNLxn2.jpg
 
3t3P said:
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Nice, sounds like you're further ahead than I was in my thoughts. Have you checked if an internal 140 at the rear would fit with the top 360 having ports at the rear? When I put mine it it was pretty much impossible to fit it in with the ports at the front.

Loop design gets a bit complicated at that point as it was looking (in my head) like I would need to go out from the 140 and up into the 360, then back down to the cpu and on to the gpu from there.

I was also looking at whether the pump/res might be better off in the bottom section with the PSU but I'm not sure what kind of combo would fit under there without a lot of work. I'm still trying to avoid modding if possible.

Thanks for the pic Bubo, I was looking at a few 240/280 mods yesterday and that looks neat but there was one with it horizontal on the base that looked a bit easier in the 800D. It certainly made my case feel old when I saw the date of the original post!
 
Bubo said:
This is what I did with a 700D, if you don't mind chopping up your case a bit. Probably would be harder to do with an 800D though, given the hot swap bays and associated gubbins, but I have seen similar mods on an 800D, usually with the front rad flush with the front of the case, compared to this.

9jNLxn2.jpg
Click to expand...
I was also playing around with this mock up with two 140s in that area, would Def have to cut up the case and figure out a mounting solution. Also air flow in and out is poor in that area.
 
3t3P said:
I was also playing around with this mock up with two 140s in that area, would Def have to cut up the case and figure out a mounting solution. Also air flow in and out is poor in that area.
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This why I went for that orientation, so I could cut both side panels to fit rad grills for intake and exhaust. The rad I have has some holes along the sides so they were used to fix to a piece of wood to give the required standoff from the front to suit the cut-out in the side panels. You are right about the air flow if the rad was mounted in the traditional way flush with the front, there would be very poor flow in that case.
 
3t3P said:
I think I'm gonna have to put a 140mm out at the back. Question is fan exhausting or intaking.
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I still feel like the case should be big enough to get a rad on the inside of that back vent but haven't measured anything yet. Are the ports too low and interfere with the GPU or something or do you just prefer the external rad setup?

I have that fan set up as an exhaust in my rig. It's the only out vs 4 in for the positive pressure funtimes.
 
It's doable but will cover the lighting of the mobo in the IO area:)

Xspc used to do a 20mm slim rad don't know if it still exists.

Pretty resolved to do a rear rad single 140 on the outside, just hope the enloops don't make that noise again like they did before when close to a grille.
 
The EK option looks like the slimmest at 28mm, but there's a 30mm option from corsaid and a 45 fat boy from EK too. I'm wondering if I can figure out a way to fit the 45 in for the extra thermal dissipation.

Is there a good resource for rad comparisons/reviews? It it's a significant difference I'd be inclined to try and force something bigger in there :p.
 
SirConfused said:
The EK option looks like the slimmest at 28mm, but there's a 30mm option from corsaid and a 45 fat boy from EK too. I'm wondering if I can figure out a way to fit the 45 in for the extra thermal dissipation.

Is there a good resource for rad comparisons/reviews? It it's a significant difference I'd be inclined to try and force something bigger in there :p.
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Thermalbench is the absolute king of in-depth scientific testing. Sadly there's less output now, but if your radiator isn't a super new model there's likely a thorough comparison with push, pull, push-pull at a range of fan speeds, all compared to other radiator models. It's glorious.
 
Nice website but they only have data on a handful of rads. I've found some comparisons so far, now I'm just trying to figure out the thermal output of my CPU combined with a new 3080. It looks like I'll need to get rid of maybe 500W which might be a stretch for a 360 + 140 rad combo.
 
Wondering about putting a MONSTA 80mm thick rad out the back! the 140mm. Will enable good cooling with low rpm I'm thinking.

I've always wanted a MONSTA-class radiator.
 
I can't remember where it was now but I read something recently that suggested it wasn't worth getting a rad that thick unless you were going push/pull with it. If you did I'm pretty sure that would cover you. I'm only shooting for 500W myself because of the overclocking, I want some headroom to be sure I don't cook everything!
 
Aye have been reading again and the monstas look cool and can perform well generally but aren't a miracle cure.

I think 240mm per component if overclocking is a good goal, one I'm short of currently.

I like the fractal 7XL though think it's even bigger than my 700D! (Edit it's only a bit wider)

I've figured I'd use a 45mm rad out back now, quite easy to do if I use two 90degree rotaries.

Had this case ten years but also did a lot of mods to it including cutting out mesh to improve airflow, carbon vinyl wrap and £180 in CNC MNPCTECH fan grilles!

So quite attached. But yeh I'd love to just whack a 480 rad into a case without a moment's hesitation!
 
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Mostly I've been working off a calculation of the power output of my OC'd CPU which is about 160W odd, plus the 320W quoted for 3080 at stock clocks. Assuming that isn't 100% thermal energy then if I aim for 500W of rad capacity I think I'll be good.

This EK write up, assuming my 360x60 phobya has ballpark similar performance, I can expect ~350-500 depending on fan performance (it might be time to replace the scythe's) so I'm going to belt & braces with a 140 mid thickness option like the EK CE140 which looks like it should net well over another 100W of thermal dissipation according to this review.

Now I just need to figure out where to mount it. I'm not a massive fan of an external mount concept personally so I might try a pull setup with the rad inside if I can fit it and still get to the rear mounted ports on the 360 in the roof... I'll go get the tape measure out
 
Another area is the 140mm fan intake at the bottom dividing partition. I can squash my PSU cables down sufficiently that a mock feeler gauge 30mm thick allows a radiator to go there.

Some good info above, though I'd say an OCd CPU at full tilt is more like 2-220watts system wall draw from measuring it. As you say not all of this is heat energy.

What I'm most interested in is keeping GPUs at or under 50 degrees to prevent a downclocking bin table from kicking in.
 
Ordered the corsair 140mm 30mm thick rad, good price and does excellently in testing as it's made by HWLabs.
Does well with low rpm which is my build.
Cheap price too:)
 
3t3P said:
Ordered the corsair 140mm 30mm thick rad, good price and does excellently in testing as it's made by HWLabs.
Does well with low rpm which is my build.
Cheap price too:)
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Ah, nice one! If you're going with the rad mounted below the shelf, are you going to put some new holes in it for the tubing?

Post some pics and temps when you get it in, I'm really curious to see how it all goes. If it's that good I'm thinking I might go nuts and stick one down there as well as at the rear exhaust for extra headroom and lower fan speeds.
 
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