• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

Unleash the Full Power of Lenovo Legion Pro 9i with Eurocom's 780W AC Adapter

btarunr

Editor & Senior Moderator
Staff member
Joined
Oct 9, 2007
Messages
47,508 (7.49/day)
Location
Hyderabad, India
System Name RBMK-1000
Processor AMD Ryzen 7 5700G
Motherboard ASUS ROG Strix B450-E Gaming
Cooling DeepCool Gammax L240 V2
Memory 2x 8GB G.Skill Sniper X
Video Card(s) Palit GeForce RTX 2080 SUPER GameRock
Storage Western Digital Black NVMe 512GB
Display(s) BenQ 1440p 60 Hz 27-inch
Case Corsair Carbide 100R
Audio Device(s) ASUS SupremeFX S1220A
Power Supply Cooler Master MWE Gold 650W
Mouse ASUS ROG Strix Impact
Keyboard Gamdias Hermes E2
Software Windows 11 Pro
The Lenovo Legion Pro 9i is a powerhouse gaming and professional workstation laptop built for extreme performance, featuring cutting-edge hardware designed to tackle the most demanding games and professional workloads. However, power limitations can restrict its full potential. Many high-performance laptops, including the Legion Pro 9i, ship with limited 330 W AC adapter that doesn't provide sufficient sustained wattage, leading to throttling, performance drops, and even battery drain under heavy loads.

The Legion Pro 9i is equipped with the 14th Generation Intel Core i9-14900HX Processor, featuring 24 cores (8P + 16E), 32 threads, a 36 MB cache, and clock speeds reaching up to 5.80 GHz (P-Core Max) and 4.10 GHz (E-Core Max) with Turbo Boost. The CPU has a maximum turbo power draw of 157 W. This powerhouse CPU pairs with two high-end NVIDIA GeForce RTX GPU options:
  • RTX 4090 Laptop GPU (16 GB GDDR6, 175 W TGP)
  • RTX 4080 Laptop GPU (12 GB GDDR6, 150 W TGP + 25 W Boost)


While these components deliver exceptional performance, the included 330 W AC adapter may not always supply enough power for the CPU and GPU to sustain their peak turbo speeds simultaneously. Under intense loads such as heavy-duty gaming, CAD/CAM/CAE rendering, or computer simulations, power fluctuations can cause performance dips, increased heat output, and even battery drain when plugged in. The standard 330 W adapter tends to overheat, resulting in loss of laptop performance and potential application crashes.
Eurocom's 780 W AC Adapter: A Game-Changer Eurocom's 780 W AC Adapter eliminates these power bottlenecks, delivering a stable and ample power supply to the Legion Pro 9i. Key benefits include:
  • Unrestricted CPU & GPU Performance: The 780 W adapter ensures the i9-14900HX and RTX 4090 maintain their maximum clock speeds for extended periods, reducing throttling and optimizing FPS and rendering speeds.
  • Stable Power Delivery: Designed for high-performance gaming and professional workstation laptops, Eurocom's adapter provides consistent voltage and wattage, preventing system instability and improving reliability during long gaming or professional workloads.
  • Enhanced Productivity for Professionals: Content creators using Blender, Premiere Pro, and DaVinci Resolve will benefit from improved rendering times and smoother workflows due to uninterrupted power. Engineers and designers working with CAD/CAM/CAE applications will experience faster processing times and seamless multitasking.
  • Plug-and-Play Compatibility: The adapter seamlessly integrates with the Legion Pro 9i, making it a simple yet highly effective upgrade for users who demand the highest performance.
"This is the best option to replace aging AC Adapters and move to a single more powerful one. There is really nothing like this on the market. One AC Adapter can be used for all of your computing needs."—Mark Bialic, Eurocom President.

Technical Specifications of Eurocom 780 W AC Adapter
  • Maximum Power Output: 780 W
  • Input Voltage: 100-240 V, 50-60 Hz
  • Output Voltage: 19.5 V
  • Current Output: 40 A
  • Efficiency Rating: 95% high-efficiency design
  • Connector Size: Multiple DC cable options available
  • Weight: 2.95 lbs (1.34 kg)
  • Dimensions: 12.8 x 4.3 x 1.5 in (325 x 110 x 40 mm)
  • Safety Certifications: CE, FCC, RoHS compliant
  • Cooling System: Advanced heat dissipation technology for low operating temperatures
Compatible DC Cables Available Eurocom offers a wide range of DC cables for maximum compatibility with different high-performance laptops:
  • Lenovo Legion Pro 9i (2024)
  • Alienware X17/X16/X15
  • MSI Titan GT Series
  • ASUS ROG Strix SCAR
  • Clevo X170, X270 series
  • Other high-performance workstation and gaming laptops

View at TechPowerUp Main Site
 
Joined
Jul 31, 2024
Messages
887 (4.33/day)
So is the device build quality and firmware able to really benefit from that?

The difference from the stock 330 Watt to the up to 780 Watt replacement PSU sound huge.

I think my ASUS gaming notebook had around 8.33 Amps and not 40 Amps at the usual 19.5 V DC power brick.

While these components deliver exceptional performance, the included 330 W AC adapter may not always supply enough power for the CPU and GPU to sustain their peak turbo speeds simultaneously.

Eurocom's 780 W AC Adapter: A Game-Changer Eurocom's 780 W AC Adapter eliminates these power bottlenecks, delivering a stable and ample power supply to the Legion Pro 9i.
 

FreedomEclipse

~Technological Technocrat~
Joined
Apr 20, 2007
Messages
24,477 (3.76/day)
Location
Hong Kong
System Name WorkInProgress
Processor AMD 7800X3D
Motherboard MSI X670E GAMING PLUS
Cooling Thermalright AM5 Contact Frame + Phantom Spirit 120SE
Memory 2x32GB G.Skill Trident Z5 NEO DDR5 6000 CL32
Video Card(s) Asus Dual Radeon™ RX 6700 XT OC Edition
Storage WD SN770 1TB (Boot)|1x WD SN850X 8TB (Gaming)| 2x2TB WD SN770| 2x2TB+2x4TB Crucial BX500
Display(s) LG GP850-B
Case Corsair 760T (White) {1xCorsair ML120 Pro|5xML140 Pro}
Audio Device(s) Yamaha RX-V573|Speakers: JBL Control One|Auna 300-CN|Wharfedale Diamond SW150
Power Supply Seasonic Focus GX-850 80+ GOLD
Mouse Logitech G502 X
Keyboard Duckyshine Dead LED(s) III
Software Windows 11 Home
Benchmark Scores ლ(ಠ益ಠ)ლ
Joined
Apr 12, 2013
Messages
7,732 (1.78/day)
Show your evidence that the Legion Pro 9i is capable of accepting 40 amps without melting into a smoking heap. Until then you are more sus than Asus.
You know this is why we can't have good things :slap:

So what if your life flashes before your eyes, don't you want it rendered 4x in fake frames :toast:
 
Joined
Oct 22, 2014
Messages
14,338 (3.80/day)
Location
Sunshine Coast
System Name H7 Flow 2024
Processor AMD 5800X3D
Motherboard Asus X570 Tough Gaming
Cooling Custom liquid
Memory 32 GB DDR4
Video Card(s) Intel ARC A750
Storage Crucial P5 Plus 2TB.
Display(s) AOC 24" Freesync 1m.s. 75Hz
Mouse Lenovo
Keyboard Eweadn Mechanical
Software W11 Pro 64 bit
I can't wait to see what they come up with for the 5090M GPUs
 
Joined
Nov 2, 2020
Messages
1,546 (0.98/day)
Location
Tel Fyr
System Name Purple Haze | Vacuum Box
Processor AMD Ryzen 7 5800X3D (-30 CO) | Intel® Xeon® E3-1241 v3
Motherboard MSI B450 Tomahawk Max | Gigabyte GA-Z87X-UD5H
Cooling Dark Rock 4 Pro, P14, P12, T30 case fans | 212 Evo & P12 PWM PST x2, Arctic P14 & P12 case fans
Memory 32GB Ballistix (Micron E 19nm) CL16 @3733MHz | 32GB HyperX Beast 2400MHz (XMP)
Video Card(s) AMD 6900XTXH ASRock OC Formula & Phanteks T30x3 | AMD 5700XT Sapphire Nitro+ & Arctic P12x2
Storage ADATA SX8200 Pro 1TB, Toshiba P300 3TB x2 | Kingston A400 120GB, Fanxiang S500 Pro 256GB
Display(s) TCL C805 50" 2160p 144Hz VA miniLED, Mi 27" 1440p 165Hz IPS, AOC 24G2U 1080p 144Hz IPS
Case Modded MS Industrial Titan II Pro RGB | Heavily Modded Cooler Master Q500L
Audio Device(s) Audient iD14 MKII, Adam Audio T8Vs, Bloody M550, HiFiMan HE400se, Tascam TM-80, DS4 v2
Power Supply Rosewill Capstone 1000M | Enermax Revolution X't 730W (both with P14 fans)
Mouse Logitech G305, Bloody A91, Amazon basics, Logitech M187
Keyboard Redragon K530, Bloody B930, Epomaker TH80 SE, BTC 9110
Software W10LTSC 21H2, PBO2, FF, MusicBee, mpv, ImageGlass, OpenRGB, FanControl, Greenshot, DS4Win, Signal
Hey people, you see those 2 (small diameter, thick) fans right there?
This PSU is (probably IMO) overkill because you don't want to listen those at their full speed.
 
Joined
Oct 18, 2013
Messages
6,442 (1.55/day)
Location
So close that even your shadow can't see me !
System Name The Little One
Processor i5-11320H @4.4GHZ
Motherboard AZW SEI
Cooling Fan w/heat pipes + side & rear vents
Memory 64GB Crucial DDR4-3200 (2x 32GB)
Video Card(s) Iris XE
Storage WD Black SN850X 8TB m.2, Seagate 2TB SSD + SN850 8TB x2 in an external enclosure
Display(s) 2x Samsung 43" & 2x 32"
Case Practically identical to a mac mini, just purrtier in slate blue, & with 3x usb ports on the front !
Audio Device(s) Yamaha ATS-1060 Bluetooth Soundbar & Subwoofer
Power Supply 65w brick
Mouse Logitech MX Master 2
Keyboard Logitech G613 mechanical wireless
VR HMD Whahdatiz ???
Software Windows 10 pro, with all the unnecessary background shitzu turned OFF !
Benchmark Scores PDQ
HAHAHAHAHAHAHAHA.....

$468 for a power brick & cable....MINIMUM...

Might as well just fire up your warp reactor :D

p/A/s/S
 
Joined
Dec 28, 2012
Messages
4,195 (0.95/day)
System Name Skunkworks 3.0
Processor 5800x3d
Motherboard x570 unify
Cooling Noctua NH-U12A
Memory 32GB 3600 mhz
Video Card(s) asrock 6800xt challenger D
Storage Sabarent rocket 4.0 2TB, MX 500 2TB
Display(s) Asus 1440p144 27"
Case Old arse cooler master 932
Power Supply Corsair 1200w platinum
Mouse *squeak*
Keyboard Some old office thing
Software Manjaro
Im not going to wring my hands nor clutch my pearls over power use, I'm just saying if you need 780 watts in a laptop, maybe its time to consider a desktop for your work?
 
Top