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Razer Core X Fan Mod No Solder  

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buttsaggybob
(@buttsaggybob)
Active Member
Joined: 5 months ago
 

I saw posts about replacing the fan in the Core X PSU and then soldering the fan to the motherboard, but I didn't want to do that. I got a fan splitter, a 80mm Noctua Redux fan, a 120mm Redux fan, and swapped everything out. I ran the wire for the 80mm fan out of the PSU along with all of the other power cables, and connected both of the fans to the motherboard via the fan splitter. Both of the fans spun up just fine, and they are dead silent. There have been reports of some fans not being able to spin up due to the Core X's wacky voltages, but I can confirm that both of these Redux fans work just fine. I've had no issues with temperatures so far either. Just wanted to share this here for anyone interested in the future. Let me know if you have any questions.

IMG 20200602 123117875 1

 

This topic was modified 2 months ago

Macbook Pro 15" (2018) + Razer Core X + RX 5700XT
Windows 10 2004 (Insider Preview Fast)


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Leovinus
(@leovinus)
Eminent Member
Joined: 4 months ago
 

I like the can-do attitude! If I ever get annoyed enough with mine I'll simply buy a better PSU for it since it's standard ATX. But I kinda feel that this might be the right opportunity to mention that capacitors hold a charge. It's basically what the PSU is built for. Even a power supply that's turned off can kill you if you touch the wrong parts as they dump the charge into the unwary tinkerer.

Rocking a Mac mini 2018/2020 i7-8700B 6C/12T with 32Gb RAM, and a PowerColor 5700 XT humming along in its Razer Core X.

 
2018 Mac Mini [8th,6C,B] + RX 5700 XT @ 32Gbps-TB3 (Razer Core X) + macOS 10.15.5 [build link]  


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Brian Graham
(@brian_graham)
Active Member
Joined: 3 months ago
 

When you were removed the fan from the PSU, how did you disconnect the cable connecting the old fan to the PSU? Mine is slightly covered by the hardened caulking. Did yours not? Or did you cut it off?

I carefully took the screws off the bottom and removed the housing, then carefully cut away at the caulking for about 10-15 minutes making sure not to touch anything until I freed the stock fan cable, then connected it the same way you did.

 

If you do end up replying, how did you connected the power cables to the splitter? One is 4 pin and the other is 3 pin, and the 4 pin had the yellow cable connected (Sensor wire?). I assume since the PSU fan should always be running it should connect to the positive and ground wires only (the 3 pin in this case). If you can confirm this that would be great.

This post was modified 3 months ago

macOS 10.15.6
3.2 GHz 6-Core Intel Core i7 (i7-8700H)
32GB 2667 MHz DDR4

eGPU: Razer Core X
GPU: Radeon RX 5700 XT 8GB


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Sagi Sapir
(@sagi_sapir)
New Member
Joined: 2 months ago
 

@buttsaggybob, Hello

I just did your way of moding to my "Razer Core X Chroma" "silent in a very very good way" Smile

Before the eGpu wasn't noise but load in a very reasonable way and now "quiet" almost silent or dead silent, even when I let the GPU fan run a 900rpm. all in all, I get Silent Smile

But I have a concern! "is the 80mm fan at 5v as enough speed to cool the PSU under load when gaming or rendering"? 

 

Looking for your advice or from other members.

Thanks

Best,

 

 

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

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buttsaggybob
(@buttsaggybob)
Active Member
Joined: 5 months ago
 

@leovinus, Thank you for the concern, I was very aware of that risk and it was at the top of my mind the whole time I was working on it. If I were to do it again I would leave it powered off for a few days before attempting the procedure.

@brian_graham, Sorry about the late reply, I just took a pair of needle-nose pliers and pulled at the glue until it separated enough from the plug to disconnect it. There isn't much to think about the wiring, I'm using 3-pin for both of the fans and it only goes into the socket one way, I didn't have to disconnect any of the wires. As far as I can tell, the fan is always running, since the motherboard 3-pin header on the Core X doesn't do any fan speed regulation. It's also the reason why I got low-RPM fans, since they're always going to be spinning at max speed.

@sagi_sapir, Glad to hear you got good results. I personally haven't experienced any issues with overheating, but as I don't have a temperature probe, I can't verify the temperatures. If you do have a thermal camera or probe and you'd be willing to do some measurements, by all means let me know what you find!

Macbook Pro 15" (2018) + Razer Core X + RX 5700XT
Windows 10 2004 (Insider Preview Fast)


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Sagi Sapir
(@sagi_sapir)
New Member
Joined: 2 months ago
 

@buttsaggybob, Hi 

Sorry, I don't have any temperature probe or a thermal camera.

I can add that in the last hour I'm running the eGpu fans from the fans headers on my Asus Strix gtx1080ti at those speeds (80mm = 840rpm) (120mm=1140rpm)

Unfotently this is the lowest I can get, the ASUS GPU TweakII alow minimum of 50% and the rpm results as above.

At touse rpm, the eGpu fill less warm to the touch...

And from the eGpu fan header little hotter...

 

I am happy to hear from your experience that you didn't notice any overheating from the PSU.

I'm thinking to buy a PWM fan controller with option to interface with software via USB if there is one..... As I see it at idle no overheating, and under load, I think that we will really need a temperature probe to really figure out if we have a major problem, do you agree? Smile

 

Best,

Sagi.s

 

 

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

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buttsaggybob
(@buttsaggybob)
Active Member
Joined: 5 months ago
 

@sagi_sapir, Another thing I would suggest doing is removing the metal mesh that sits between the PSU and the rear exhaust vent of the chassis, this restricts a lot of air flow and serves no purpose since it's an exhaust. If you remove it the temps and noise will be better due to increased air flow.

 

Macbook Pro 15" (2018) + Razer Core X + RX 5700XT
Windows 10 2004 (Insider Preview Fast)


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Sagi Sapir
(@sagi_sapir)
New Member
Joined: 2 months ago
 

@buttsaggybob, Hi

I will give it a try Smile

Thank's

 

Reporting that with GPU fan headers there is less humming as overall loudness, but not dead silent as the mainboard.

I can leave with that here in the studio...

This gives me the ability to ramp up the fans under a gaming load.

I found 3 options for PWM control, 2 with software and one manual,

1 - https://noctua.at/en/na-fc1

2 - https://www.nzxt.com/products/rgb-fan-controller

3 - https://www.corsair.com/us/en/Categories/Products/Accessories-%7C-Parts/iCUE-CONTROLLERS/iCUE-Commander-PRO-Smart-RGB-Lighting-and-Fan-Speed-Controller/p/CL-9011110-WW

If I will buy any I will report Smile

 

Best,

 

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

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