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post #11 of 23 (permalink) Old 05-14-2020, 10:49 PM
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I had Define S a few years ago, not the best for airflow but its not the worst either . What I found best after experimenting with different configurations : 4x 140mm intake and 1x exhaust win .
I would recommend as others before me : buy an arctic P14pst 5pack and fill up the case with them. 3x 14cm front , 1x14cm bottom (intake ) 1x 14cm exhaust on back. Top panel fully closed.
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post #12 of 23 (permalink) Old 05-15-2020, 07:52 AM - Thread Starter
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Ok I have ordered what I need based on your recommandations: jumper cable, few fans (mostly to replace the one that's broken), didn't need any splitters since I have 4+1 fan connectors which should be enough.
I may delid my CPU, hopefully I'll break nothing.

I also did some cable management to remove anything in the way of air flow, maybe... At least it's prettier.
My main issue still remains the noise my GPU is making after a few hours of gaming, but I may be out of luck since it's been a few month since the 3 years warranty is expired.
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post #13 of 23 (permalink) Old 05-15-2020, 08:29 AM
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Quote: Originally Posted by dindon View Post
Ok I have ordered what I need based on your recommandations: jumper cable, few fans (mostly to replace the one that's broken), didn't need any splitters since I have 4+1 fan connectors which should be enough.
I may delid my CPU, hopefully I'll break nothing.

I also did some cable management to remove anything in the way of air flow, maybe... At least it's prettier.
My main issue still remains the noise my GPU is making after a few hours of gaming, but I may be out of luck since it's been a few month since the 3 years warranty is expired.
Are your 4 + 1 fan connectors PWM with PSU power? If they are not you are taking a chance of burning out the fan header you plug them into. Reason is fan amp ratings are almost always running amps, not maximum draw, like when starting up or if impeller is stopped by something. Then the draw 3-5 times more power. This is why almost every fan header failure happens at system start-up.

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post #14 of 23 (permalink) Old 05-15-2020, 09:01 AM
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Quote: Originally Posted by doyll View Post
Are your 4 + 1 fan connectors PWM with PSU power? If they are not you are taking a chance of burning out the fan header you plug them into. Reason is fan amp ratings are almost always running amps, not maximum draw, like when starting up or if impeller is stopped by something. Then the draw 3-5 times more power. This is why almost every fan header failure happens at system start-up.
I read this as the motherboard offers 4 + 1 fan connectors (probably CPU, CPU-OPT, & SYS1-SYS3). May just be a miscommunication. If not, I agree, 5 fans powered from 1 header is asking for trouble.

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post #15 of 23 (permalink) Old 05-15-2020, 09:41 AM
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if your GPU is out of warranty you should remove the plastic surround and the fans, leave just the base aluminum heatsink, and strap on 2-3 92mm or 120mm fans on the card depending on how big the card and the heatsink are.

Same Arctic P12 PWM work for this for 120mm, and Arctic F9 work for 92mm, if it's a small card you could also go with Arctic P8 (80mm fans, the p version of 92 is not out yet unfortunately).
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post #16 of 23 (permalink) Old 05-15-2020, 09:46 AM - Thread Starter
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Quote: Originally Posted by doyll View Post
Are your 4 + 1 fan connectors PWM with PSU power? If they are not you are taking a chance of burning out the fan header you plug them into. Reason is fan amp ratings are almost always running amps, not maximum draw, like when starting up or if impeller is stopped by something. Then the draw 3-5 times more power. This is why almost every fan header failure happens at system start-up.
I'm afraid I'm not knowledgeable enough to understand you.

My motherboard (MSI Z270 SLI PLUS) provides:
- 1 x 4-pin CPU fan connector (used)
- 4 x 4-pin system fan connectors (2/4 used)
- 1 x 4-pin water pump fan connector (unused)

How can I check if my fan connectors are PWM with PSU ?

EDIT: I've quickly read https://www.ekwb.com/blog/what-is-pw...-does-it-work/ so I understand a bit what PWM is, since my connectors have 4-pins I'd say I'm ok ?
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post #17 of 23 (permalink) Old 05-15-2020, 10:03 AM
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if it's a 4 pin fan header it's PWM.

motherboard manual will tell you what each header is rated for, if it doesn't say then just assume it's 1 amp. marginally exceeding it isn't going to cause issues but you should try to avoid it.

they make powered PWM splitters (any fan splitter with am additional SATA or molex) and then it's a non-issue, but they usually make cable management a mess.

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post #18 of 23 (permalink) Old 05-15-2020, 10:37 AM
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Quote: Originally Posted by dindon View Post
Ok I have ordered what I need based on your recommandations: jumper cable, few fans (mostly to replace the one that's broken), didn't need any splitters since I have 4+1 fan connectors which should be enough.

I may delid my CPU, hopefully I'll break nothing.



I also did some cable management to remove anything in the way of air flow, maybe... At least it's prettier.

My main issue still remains the noise my GPU is making after a few hours of gaming, but I may be out of luck since it's been a few month since the 3 years warranty is expired.


You would still need the splitter I suggested if you want to test fans because it is powered, if you no longer need to test them, never mind. Since you will be jumping the MOBO, the mainboard 4 pin connector will not have any power.

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post #19 of 23 (permalink) Old 05-15-2020, 11:03 AM
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Quote: Originally Posted by dindon View Post
I've updated the post with my location, thanks.



Thank you, I was just wondering how I could test my fans and you seem to have answered my question.
You can power fans with any voltage source under 12V DC, such as one of the gazillion 12V DC powersupplies you have at home probably for your router, external harddrive, and about every other possible gadget. All you need is two wires with two bare ends. Or you can make yourself a cable with connectors, both things work.
Some PSUs already come with a testing plug to short the two pins necessary for PSU to turn on, or use a paper clip etc. no need to buy an expensive plug cable and switch.

No idea how cool a 7700K stock let alone OCed is supposed to run, but in my experience bad CPU cooling on these Intel quads is summarized like this:
  • too much silicone under IHS
  • bad TIM
  • not enough TIM under cooler
  • not enough cooler pressure
  • bad IHS and cooler plate surface flatness

Cracked cooler fin is fine. Cracked fan blade not so much.
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post #20 of 23 (permalink) Old 05-15-2020, 11:06 AM
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Quote: Originally Posted by dindon View Post
I'm afraid I'm not knowledgeable enough to understand you.

My motherboard (MSI Z270 SLI PLUS) provides:
- 1 x 4-pin CPU fan connector (used)
- 4 x 4-pin system fan connectors (2/4 used)
- 1 x 4-pin water pump fan connector (unused)

How can I check if my fan connectors are PWM with PSU ?

EDIT: I've quickly read https://www.ekwb.com/blog/what-is-pw...-does-it-work/ so I understand a bit what PWM is, since my connectors have 4-pins I'd say I'm ok ?
Okay, I missunderstood your 4-1. My bad.

4-pin headers are not always PWM. Some are only variable voltage. Some can be set in bios to be variable voltage or PWM.

Check in your owner's manual. It should have an image of motherboard showing what control is on what header. If fan headers can be set PWm or variable voltage that will also be explained in manual.



Quote: Originally Posted by The Pook View Post
if it's a 4 pin fan header it's PWM.

motherboard manual will tell you what each header is rated for, if it doesn't say then just assume it's 1 amp. marginally exceeding it isn't going to cause issues but you should try to avoid it.

they make powered PWM splitters (any fan splitter with am additional SATA or molex) and then it's a non-issue, but they usually make cable management a mess.
Not all 4-pin fan headers are PWM. Sometimes they are 4-pin headers using only 3-pins for variable voltage control. Sometimes in Bios they can be set to function 3-pin variable voltage or 4-pin PWM.

If a PWM fan is plugged into a variable voltage fan header it will be speed controlled with variable voltage.

If a 3-pin variable voltagge fan is plugged into a PWM fan header it will run at full speed all the time because PWM controlled fan header has 12v constant power to pin-2.

Because variable voltage control fan header has variable voltage to pin-2 both 3-pin and 4-pin fans will be speed controlled.

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@ 4.0GHz =R1 Ultimate w/2x TY-143 fans =Dominator GT 6x2GB =Rampage III Extreme =ASUS GTX580 DirectCU II =TX850 =Enthoo Primo w/ custom castor base
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