Question Deepcool LT720 AIO with BeQuiet Light Wings good or not?

Brandon Umali

Reputable
Oct 13, 2019
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4,535
Hi guys,

I would like to change the three (3) Deepcool 120mm fans included on the LT720 AIO with the Be Quiet! BL077 Light Wings 120mm PWM high-Speed.
My question is will it increase or decrease the cooling performance of these AIO?

Here's my build:
CPU: AMD Ryzen 7 7800X3D 4.2 GHz 8-Core Processor
CPU COOLER: Deepcool LT720 85.85 CFM Liquid CPU Cooler
MOBO: GIGABYTE B650 AUROS ELITE AX
GPU: Sapphire NITRO+ Radeon RX 7900 XTX 24 GB
RAM: G.Skill Trident Z5 Neo RGB 32 GB (2 x 16 GB) DDR5-6000 CL30
SSD: 2pcs Western Digital Black SN850X NVMe 2TB PCIe Gen 4 SSD - 2TB
PSU: FSP Group Hydro Ti PRO,Gen 5 1000 W 80+ Titanium Certified Fully Modular ATX Power Supply
CASE: Montech AIR 903 MAX ATX Mid Tower Case
CASE FAN: 4pcs Be Quiet! BL079 Light Wings 140mm PWM high-Speed
MONITOR: Gigabyte M27Q-X 27.0" 2560 x 1440 240 Hz or MSI G274QPX 27.0" 2560 x 1440 240 Hz Monitor
 
Solution
Do not concentrate on fan SPEED. The item to consider is max fan AIR FLOW. According to the specs the fans supplied with the Deepcool LT720 system can deliver max 86 CFM air flow each with no backpressure, can still deliver some air flow up to a backpressure of 3.3 mm water, and would generate noise at 33 dBA at max speed. Your proposed Be Quiet fans can do max 52 CFM and will push some air up to 2.6 mm water, max noise at 31 dBA, only slightly less. The BeQuiet models are significantly LESS able to provide the air flow you need on both scores. So in actual use they probably would have to run faster and generate more noise than the supplied fans. Further, at very high workloads (and heat generation) the probably will NOT be able to keep...
My question is will it increase or decrease the cooling performance of these AIO?
This requires you to:
-record the results of your current fan curves in the everyday apps you use.
-buy the new fans, customize their curves to your comfort zone, and record the results in the everyday apps you use.
-compare the 2.
-???
-you will then have a solid answer without all the speculation.
 
What is your objective?

The airflow potential of any fan is determined mostly by the rpm that it will run at.
If you install fans that can run at higher rpm, your cooling potential will increase... But the noise will also increase.

My thought.... spend your money elsewhere.
 
What is your objective?

The airflow potential of any fan is determined mostly by the rpm that it will run at.
If you install fans that can run at higher rpm, your cooling potential will increase... But the noise will also increase.

My thought.... spend your money elsewhere.
My goal is to have a beautiful looking build that will not compromise the current cooling efficiency.
 
This requires you to:
-record the results of your current fan curves in the everyday apps you use.
-buy the new fans, customize their curves to your comfort zone, and record the results in the everyday apps you use.
-compare the 2.
-???
-you will then have a solid answer without all the speculation.
I haven't found any video/s about the LT720 with beQuiet light wings so I might be the first one to do so.
 
Do not concentrate on fan SPEED. The item to consider is max fan AIR FLOW. According to the specs the fans supplied with the Deepcool LT720 system can deliver max 86 CFM air flow each with no backpressure, can still deliver some air flow up to a backpressure of 3.3 mm water, and would generate noise at 33 dBA at max speed. Your proposed Be Quiet fans can do max 52 CFM and will push some air up to 2.6 mm water, max noise at 31 dBA, only slightly less. The BeQuiet models are significantly LESS able to provide the air flow you need on both scores. So in actual use they probably would have to run faster and generate more noise than the supplied fans. Further, at very high workloads (and heat generation) the probably will NOT be able to keep your CPU cool enough.
 
Solution