Cosmos II Cooling Maximized Advice

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romansamurai

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It was suggested to me I separate some of my questions since, this one may be a bit more specific and would warrant a new question.

It could help someone else in the future with a similar problem. I looked through the cosmos ownership thread, but there's a lot of custom cases and custom water cooling that is currently beyond my abilities. I'd prefer to stick to regular fan cooling...I think...well, let me know guys! I appreciate any help.

I recently purchased parts to build a new PC. You can see my thread here. While waiting on the remainder of parts, I have time to get myself some new fans for that big thing. (I really did not realize how massive it is...my wife hates it,..).

Manual is here to help out with some schematics and information. From what I can gather, it supports the following fan options.

TOP: 1x 200mm , 2x 140mm or 3x 120mm. (Exhaust)
FRONT: 1x 200mm, 1x 140mm, 1x 120mm. (Intake)
HDD: 3x 120mm (Intake)
GPU: 2x 120mm (Intake)
REAR: 1x 140mm (Exhaust)

I don't know which to get size wise, nor which to get for maximum cooling and sexy stuff. Thank you guys. :)
 
Solution
Darkbreeze
First of all, which I'm sure you already know, make sure to connect those Jetflow fans via PWM header, not with the 4 pin molex adapters they likely come with. The system will sound like a 747 if you use those.

I would probably leave the front 200mm fan, I have the same fan in my Storm Enforcer and it's not only quiet but it flows a LOT of air when it ramps up, without getting terribly loud, at least until full load. All fans are noisy at full load though, regardless what anybody says.

I'd probably use three of the Jet Flo fans in the top three exhaust locations and two of them on the side panel locations.

Maybe use one of these below on the rear exhaust location (Ditch the included rear 140mm fan and maybe use it in the HAF case...
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i7Baby

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The case - http://www.coolermaster.com/case/ultra-tower/cosmos-2/

comes with -

"Top: 120mm fan x 1, 1200 RPM, 17 dBA (installed), or 120mm fan x 3 / 140mm fan x 2 / 200mm fan x 1 (optional)
Front: 200mm blue LED fan x 1, 1700 RPM, 19 dBA (installed), or 120/140mm fan x 1 (optional)
Rear: 140mm fan x 1, 1200 RPM, 19 dBA (installed)
Side: 120mm fan x 2 (optional)
HDD cage: (Middle)120mm fan x 1 (optional); (Bottom) 120mm fan x 2, 1200 RPM, 17 dBA (installed)"

I'd try out what it comes with before jumping to new fans. Corsair does good fans.
 
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romansamurai

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The top only has one 120mm fan, I would like 3 there :D Extra cooling is great! And there's no HDD middle fan, nor Side fans. SO that's 5 120mm fans. IF i'm going to get 5 120mm fans, I could replace the 3 120mm fans with the same kind too, if they're beter CFM. Then, if I'm getting new fans, I could get new fans for the other places too! :D I want maximum CFM, minimum dBA (as low as possible without sacrificing the cooling of course, dBA is secondary) and I want some LEDs! D:
 
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Darkbreeze

Darkbreeze

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So, since we got things all good on that other case, what is the system configuration going to be like for this rig. Do you already have all the hardware, cpu, motherboard, etc, that you plan to use in it? Are you going to be using multiple cards or overclocking anything on this rig?
 
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romansamurai

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I have everything already for it, the mobo still in transit though.

CPU: Intel Core i7-5930K 3.5GHz 6-Core Processor ($499.99 @ Micro Center)
CPU Cooler: Noctua NH-D15 82.5 CFM CPU Cooler ($92.99 @ Mwave)
Memory: Crucial Ballistix Sport 16GB (2 x 8GB) DDR4-2400 Memory ($258.98 @ Newegg)
Storage: Samsung 850 Pro Series 256GB 2.5" Solid State Drive ($166.99 @ NCIX US)
Case: Cooler Master Cosmos II (Black) ATX Full Tower Case ($279.99 @ Newegg)
Power Supply: EVGA SuperNOVA 1000 P2 1000W 80+ Platinum Certified Fully-Modular ATX Power Supply ($179.99 @ Newegg)
Optical Drive: LG WH16NS40 Blu-Ray/DVD/CD Writer ($49.99 @ Micro Center)
Operating System: Microsoft Windows 8.1 - 64-bit (OEM) (64-bit) ($90.26 @ OutletPC)
Case Fan: Cooler Master JetFlo 95.0 CFM 120mm Fan ($15.99 @ SuperBiiz)
Case Fan: Cooler Master JetFlo 95.0 CFM 120mm Fan ($15.99 @ SuperBiiz)
Case Fan: Cooler Master JetFlo 95.0 CFM 120mm Fan ($15.99 @ SuperBiiz)
Case Fan: Cooler Master JetFlo 95.0 CFM 120mm Fan ($15.99 @ SuperBiiz)
Case Fan: Cooler Master JetFlo 95.0 CFM 120mm Fan ($15.99 @ SuperBiiz)

I currently have a 780gtx I will use for it through december, but I'm waiting for 2x 970s and eventually another 970 to 3xSLI. Maybe over clock them a bit and maybe overclock pcu a bit.
 
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romansamurai

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It came with 3x of these (one on top and 2 on the HDD cage on the bottom):

A12025-12CB-3BN-F1
Speed Max: 1200 RPM
Airflow Max: 44.03 CFM
Noise: 19.8 dBA
This is what i was considering to use for the 120mm options: Cooler Master Jet Flo 120 - 95CFM 36dBA
8 Total:
3 Top
1 Mid HDD Cage
2 Bottom HDD Cage
2 Side

__________________________________________________
The rear one looks to be the same, but a 140mm (a14025-12cb-3bn-f1)
I can't find specs on it for CFM, only for the Noise and Speed, which is identical to the 120mm.

A14025-12CB-3BN-F1
Speed Max: 1200 RPM
Airflow Max: 44.03 CFM
Noise: 19.8 dBA
This is what i was considering for the 140mm option: BiFenix spectre Pro - 122.2CFM 29.2dBA
1 Total:
1 Rear


__________________________________________________
The front is an A20030 200mm Black Case Fan

A20030-07CB-3MN-F1
Speed: 700 RPM
Air Flow Max: 110 CFM
Noise: 19DBA
BitFenix Spectre Pro - 148.72CFM 27.5dBA
1 Total:
1 Front.

Now, I know some of these are noisy, how can I reduce the noise in the system besides getting lower dBA fans? :)
 
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Darkbreeze

Darkbreeze

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First of all, which I'm sure you already know, make sure to connect those Jetflow fans via PWM header, not with the 4 pin molex adapters they likely come with. The system will sound like a 747 if you use those.

I would probably leave the front 200mm fan, I have the same fan in my Storm Enforcer and it's not only quiet but it flows a LOT of air when it ramps up, without getting terribly loud, at least until full load. All fans are noisy at full load though, regardless what anybody says.

I'd probably use three of the Jet Flo fans in the top three exhaust locations and two of them on the side panel locations.

Maybe use one of these below on the rear exhaust location (Ditch the included rear 140mm fan and maybe use it in the HAF case if you can. Possibly in that bottom location. It would be fine there as a supplemental intake but probably not what you want as a full time exhaust on the Cosmos. It would be ok if you really wanted to keep it there though, at least for a while.)

http://www.newegg.com/Product/Product.aspx?Item=N82E16835608065&cm_re=Noctua_redux-_-35-608-065-_-Product

You can either use the HDD fan assembly as is, if you want, or just remove it. Unless you need the drive bays for additional storage, I'd remove the middle HDD cage as it will greatly decrease the restriction of airflow from intake to exhaust. If you need more drive bays than can be populated in the bottom cage, it would be ok to leave it though, it just won't flow quite as well.
 
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Solution
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romansamurai

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Awesome, thank you Darkbreeze, and i always try to use the PWM headers to plug directly into the mobo. I figured it will allow for fan control? I will do as you suggest, thank you, this helps a lot. That noctua fan looks like a great fan, I'll get it. :) Thanks again for your help.

And i7Baby, I don't really know how to use that stuff, I never actually bothered to use fan controllers or anything before, this is my first time getting around to it. And cosmos actually has fan controls on the unit, so that's cool. But I would like to get some kind of fan control panel maybe? I don't know if I need it.
Also, when I was thinking about sound reduction, I know some companies like OriginPC and stuff use some padding or something in their cases to reduce noise. That's what I was wondering about.

Thanks again guys!
 
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Darkbreeze

Darkbreeze

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I never use aftermarket fan controllers unless the board is severely limited, which yours is not. The BIOS has plenty of flexibility in controlling your fans via the PWM headers so unless you lack sufficient headers, keeping in mind you CAN get Y splitters and will probably need to unless you use the build in fan controller from the case, I'd just use the boards fan controls.

Sound deadening material isn't really going to help a lot with fan noise once the fans ramp up to a level that's likely to be irritating. Since the fans are basically sitting in a hole that's exposed to the exterior of the case, there is nothing it can really do to stop the sound of a fan spinning at 1200rpm or higher.
 
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Darkbreeze

Darkbreeze

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Actually, most the boards I've been working with for the last year or two have pretty much been all PWM headers, for both CPU headers and the chassis. If they're 4 pin headers, they're PWM.
 
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Darkbreeze

Darkbreeze

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Well, that has 2 PWM CPU fan headers and 4 PWM case fan headers. You've got a lot more than 4 case fans so depending on how many, if any, fans you decide to run off the case controller, you might want to get 4 PWM Y splitters like these, but don't use more than two fans per header or you'll have issues. In other words, don't use two splitters on a single header to control more than two fans.:

http://www.frozencpu.com/products/8418/cab-150/FrozenCPU_PMW_Y_Splitter_Cable.html

 
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Darkbreeze

Darkbreeze

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And, you can actually use the second CPU fan header to control your rear exhaust fan so it ramps up at a similar rate as your cpu cooler. The chassis fan headers generally work a little differently, using different temperature sensors, and aren't quite as sensitive to temperature changes as the CPU sensors are. This is actually beneficial, in theory, as the faster the CPU fan turns, the faster that exhaust fan will turn, which will increase the rate at which the exhaust fan expels heat proportionally to the rate at which the CPU cooler exchanges it from the heatsink. I've also seen it NOT work with a case fan on that header so you'll just have to try it and see but I'm pretty sure on a board as premium as that one is that it will work.
 
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romansamurai

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Don't feel bad lol. My current PC i built back in June of 2010. So over 4 years old. :) Still can play FC4 on max setting, but it's stuttering at certain moments. I felt I needed to ugprade the CPU, the i7-930 is showing its age. Your 8320 is much better, plus yours is overclocked, mine isn't. :)

yByuWlT.jpg



Should i buy an express sata connector? since this board has a slot for it and the 850 pro looks like it connects to it...and if so, where can I find it lol...or how do I connect it?


P.S. There's 2 connectors for cpu fans, right?? So I can use that for the Exhaust in Rear and CPU cooler. I'm going to have a total of 10-11 fans.
3 top exhaust
1 rear exhaust
CPU heatsink fan
1 mid HDD cage with the hdd cage itself being empty, I'll point it towards the cpu and the gfx cards to help the front intake fan.
2 hdd bottom
2 side
1 front.
Can I connect the rear exhaust and one top exhaust with a PMW splitter to the other CPU fan control? Then the other two top fans will use another PWM splitter. CPU fan will get it's own connector. Can i connect the intake fan and the mid HDD fan to the same PWM splitter also? Then I will connect 2 bottom HDD fans to another and the 2 side hdd fans to another. So, 5 splitters for 11 fans? That way I won't have to use the extra card for fan control. Will the mobo handle that kind of power drain from the fans?

Or do you have another suggestion? :)
 
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Darkbreeze

Darkbreeze

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You should be able to use that second cpu fan header with a splitter I would think.


You can probably use the 850 pro with an adapter, but I don't think it will operate at the SATA-E speeds. If you really want to majorly increase the storage access performance, go with an M.2 drive, which is much, much faster than SATA III or SATA-E. With the extra PCI lanes that board and CPU have, I don't think using either method will impact GPU performance due to the extra lane use.

I don't really think it matter what shares what on the fan headers, aside from the CPU and rear exhaust headers.
 
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