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# 800D and Water Cooling ---- a Joke?

Hey everyone,
So I have been doing some research and I know that there are numerous threads on this topic, but honestly think that I'm bringing a new perspective to the discussion.

I'm seriously contemplating between the 800D and the 600T. Now please hear me out:

I am going to be water cooling - not Ram and Mobo - only the CPU and two 500 series GPU ( either two 570s or two 580s).

So now keeping in mind that cooling is all about dispersion of heat over a larger surface area (duh!), why do people keep saying that the 800D is better than the 600T?

I'm not a carpenter or a metal-worker. I'm not willing to make drastic mods onto the case so that I can cool it. If I pay \$300 for a case, I expect it to have the necessary fan-slots.

Now that being said, lets do some math:

Fans & Radiators Surface Area for 800D:

[Top Radiator] (3 x 120 x 120) + [Rear Exhaust] (1 x 120 x 120) = 57,600 mm squared

I know that I can install a 140mm radiator on the bottom divider, but even with that it only goes up to 77,000 mm squared. But that situation is not ideal due to ugly tubing layouts which would result.

Fans & Radiators Surface Area for 600T:

[Top Radiator] (2 x 120 x 120) + [Rear Exhaust] (1 x 120 x 120) + [Front Intake] (1 x 200 x 200) = 83,200 mm squared

So there is a difference of:

83,200 - 57,600 = 25,600 mm Squared!

Please don't think that I'm professing a new story. I am sorry if it seems that way. I'm only saying that I know that I must be missing something because this is not making any sense if everyone says 800D is better for water cooling.

I know that the heights of the radiators also affect cooling, but for the purpose of these calculations - i'll be using the the 47 mm radiators w/o Push Pull - which fit in both cases.

Please let me know what you guys think. Thanks!
Quote:
Originally Posted by khb008Â

Please let me know what you guys think. Thanks!

I think you're going to be circulating a lot of hot air in your case, and the 800D with top P/P would be more effective in the end (as an intake). I have a water cooled 650D (same internal setup as 600T) and the temps are not great unless I open the side door. Too much hot air circulating from the radiators means less cooling ability.
I think it will work. I would probably set up the top rad to exhaust out the top, the front to blow out of the front, and the back to blow into the case, sort of the opposite as you normally would. It all depends on your budget. I believe there is some over in the Corsair case owner threads that are doing what you are suggesting, see how their temps are. 800D may be better, but not everyone wants to get the lowest possible temps, but care more about silence and budget.
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Also, let it be known that the phobya 200mm is not plug and play with the front of the 600T/650D, you will need your metalworker skills that you didn't want to use previously.
Honestly it just depends on where you want your surface area essentially. Since you want to do no modding you end up with about the same in either case that would be classified as usable.

Sounds like you just have to ask yourself if you want the ability or option to have front fan intake/exhaust options.
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You're going to need to cut to fit the 200mm, and the 120 exhaust rad will be really awkward to fit into your loop. You'll also end up spending around the same or more on all the parts.

I don't really like the 800D, I think the TJ07 is a much better case, but either way a full tower for water cooling more than just your CPU makes your life much easier.
@Scorpion: Thank you so much for clearing that up! I was under the impression that the RAD would fit w/o problems. But after giving a closer look to the pics on the forums, I see that they have to cut out the HD Cage base. Is that the mod you are talking about? Or is there something else that i've missed?

As for the rest, this is what i've gathered:

650D & 600T have the same interior, which is small and thus re-circulates warm air of the radiators

800D can house an equivalent of 480 RAD w/o any modifications and still is spacious enough to allow the warm air to escape

@ Piskoo I've looked into the TJ07 - I am not a big fan of it, although I know that for extreme water cooling it may be the best out there. Thank you for the suggestion!

@Yanks - like you said, not eveyone wants the lowest possible temps.

Thanks for your help guys! I think I will go for the 800D because even if I don't install the rear 120 exhaust RAD I will still be able to install a 360 at the top. And in the future if I ever do become brave enough to modify the case, I'll be able to cut out space for a dual RAD in the basement of the 800D like i've seen in the forums. That will then surely suffice.
Don't try to get so technical about it. I bought the 800D and it's the best case i've ever had hands down. I only watercool my CPU, and have a triple radiator on the top. Unlike most, I have my top radiator fans blowing IN, the bottom fan blowing IN, and the only exhaust is the one fan on the back. While this doesn't seem "ideal" in the laws of physics, you will find many get the best temps all around with this setup when using a triple radiator on the top. Google fan setups for the case, and you'll find many.

No regrets spending this much on it, I was expecting my GTX 580 to run hotter in the 800D because all the reviews say you need to watercool, however my GPU runs cool in the case.. more cool than my Antec 1200. 38C idle for the GPU, and my fans are at 50%. Computer is almost completely silent. I did replace all the case fans with Noiseblocker PK-3s though. The stock 800D fans are really bad.

By the way, I had to do absolutely 0 modding to mount my triple radiator on the top. It was as easy as holding it there and screwing it down.

Here's my results (black tubing looks sweet in this case!):

Edited by Murlocke - 2/16/12 at 2:42pm
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One other thing to consider is that surface area is not the only determining factor in cooling performance. The actual radiator construction and the fan performance play a biger role in determining the cooling ability of any particular setup than surface area.

For example, a BI GTX240 with high speed fan on it will outperform a RS360 with low speed fans. Now you might not think this a fair comparison, but go and find a high performance 200mm rad and a 200mm fan with high static pressure...

All other things being equal then yes, surface area would be comparable. However, due to availability of parts, surface area is not the be all and end all.

So no, no joke.

Edit:

If you do some fairly easy mods on the 800D it is possible to get a 480 up top, a 240 in the bottom and a 120 / 140 at the rear.
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RX240 MCR 220 EK 7950 Copper Acetal  DDC-1T
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@Murlocke:

Okay - technicality thrown out the window! lol. I was using SA to equate cases but I guess you are right. I was over-complicating the issue without taking into consideration the other factors.

@GingerJohn

Easy mods as in I would need a dremel and that's it? I've been watching a few videos regarding the 240 RAD mod. People have been using Jig Saws and etc etc. But i'll see. I don't want to set up a water cooling loop and then disassemble it later just to add a RAD. Since such mods are required for both 600T & 800D if I want to add extra RADs, I'll just focus on learning. Its a new skill right? Won't hurt.

Also, the point about Phobia 200 mm RAD not being so good. I'm not too sure about its performance, but you are certainly right in saying that there is no selection. So I cannot choose, which is not good!

Thank you guys, once again.
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