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

Why your mains powered clock is running 6 minutes slow

Joined
Aug 6, 2017
Messages
7,412 (3.05/day)
Location
Poland
System Name Purple rain
Processor 10.5 thousand 4.2G 1.1v
Motherboard Zee 490 Aorus Elite
Cooling Noctua D15S
Memory 16GB 4133 CL16-16-16-31 Viper Steel
Video Card(s) RTX 2070 Super Gaming X Trio
Storage SU900 128,8200Pro 1TB,850 Pro 512+256+256,860 Evo 500,XPG950 480, Skyhawk 2TB
Display(s) Acer XB241YU+Dell S2716DG
Case P600S Silent w. Alpenfohn wing boost 3 ARGBT+ fans
Audio Device(s) K612 Pro w. FiiO E10k DAC,W830BT wireless
Power Supply Superflower Leadex Gold 850W
Mouse G903 lightspeed+powerplay,G403 wireless + Steelseries DeX + Roccat rest
Keyboard HyperX Alloy SilverSpeed (w.HyperX wrist rest),Razer Deathstalker
Software Windows 10
Benchmark Scores A LOT
I just read the whole thread twice, and I don't understand a single word.
 

eidairaman1

The Exiled Airman
Joined
Jul 2, 2007
Messages
40,435 (6.61/day)
Location
Republic of Texas (True Patriot)
System Name PCGOD
Processor AMD FX 8350@ 5.0GHz
Motherboard Asus TUF 990FX Sabertooth R2 2901 Bios
Cooling Scythe Ashura, 2×BitFenix 230mm Spectre Pro LED (Blue,Green), 2x BitFenix 140mm Spectre Pro LED
Memory 16 GB Gskill Ripjaws X 2133 (2400 OC, 10-10-12-20-20, 1T, 1.65V)
Video Card(s) AMD Radeon 290 Sapphire Vapor-X
Storage Samsung 840 Pro 256GB, WD Velociraptor 1TB
Display(s) NEC Multisync LCD 1700V (Display Port Adapter)
Case AeroCool Xpredator Evil Blue Edition
Audio Device(s) Creative Labs Sound Blaster ZxR
Power Supply Seasonic 1250 XM2 Series (XP3)
Mouse Roccat Kone XTD
Keyboard Roccat Ryos MK Pro
Software Windows 7 Pro 64
This is because some users apparently got into very political discussions and some comments were deleted. Thus the disjointed remaining comments..

Yup politics is no bueno here. Aka keep opinions to ones' self about them lol.
 
Joined
Oct 2, 2004
Messages
13,791 (1.94/day)
I just read the whole thread twice, and I don't understand a single word.

You need to first understand that every watch needs an oscilator to keep pace (accurate time). Mechanical watches use swinging balance wheel, modern quartz watches use quartz crystal which under specific current starts to oscilate at very accurate pace and there are mains clocks that don't have either, instead they use the oscilation of the mains power to keep time. Mains power oscilates at specific rate, 50Hz for Europe, 60Hz for US. If this rate is the same, you effectively have an externally delivered oscilator. Problem is, if oscilator is not keeping its pace, the clock will become more and more inaccurate as time passes. In case of mains, it was not 50Hz anymore due to high load, instead it was running at 49,98Hz. It may not sound like much, but it's less than 50Hz which means over time, clock will lose time and started lagging behind actual time. If mains was running above 50Hz, the clocks would be faster, running ahead of actual time.

Understandable enough?
 
Joined
Apr 15, 2009
Messages
1,007 (0.18/day)
Processor Ryzen 9 5900X
Motherboard Gigabyte X570 Aorus Master
Cooling ARCTIC Liquid Freezer II 360 A-RGB
Memory 32 GB Ballistix Elite DDR4-3600 CL16
Video Card(s) XFX 6800 XT Speedster Merc 319 Black
Storage Sabrent Rocket NVMe 4.0 1TB
Display(s) LG 27GL850B x 2 / ASUS MG278Q
Case be quiet! Silent Base 802
Audio Device(s) Sound Blaster AE-7 / Sennheiser HD 660S
Power Supply Seasonic Prime 750W Titanium
Software Windows 11 Pro 64
My main's clock is keeping time perfectly well, thanks.
 

bug

Joined
May 22, 2015
Messages
13,163 (4.07/day)
Processor Intel i5-12600k
Motherboard Asus H670 TUF
Cooling Arctic Freezer 34
Memory 2x16GB DDR4 3600 G.Skill Ripjaws V
Video Card(s) EVGA GTX 1060 SC
Storage 500GB Samsung 970 EVO, 500GB Samsung 850 EVO, 1TB Crucial MX300 and 2TB Crucial MX500
Display(s) Dell U3219Q + HP ZR24w
Case Raijintek Thetis
Audio Device(s) Audioquest Dragonfly Red :D
Power Supply Seasonic 620W M12
Mouse Logitech G502 Proteus Core
Keyboard G.Skill KM780R
Software Arch Linux + Win10
meh...

Not too many clocks are powered by an AC synchronous electric motor these days (chart recorders are though).

Ready to lock this thread up if it devolves into a geopolitical discussion
Yeah, when I read this news I actually looked around my house only to find none of my clocks have been running late...
 

Tatty_Two

Gone Fishing
Joined
Jan 18, 2006
Messages
25,793 (3.88/day)
Location
Worcestershire, UK
Processor Rocket Lake Core i5 11600K @ 5 Ghz with PL tweaks
Motherboard MSI MAG Z490 TOMAHAWK
Cooling Thermalright Peerless Assassin 120SE + 4 Phanteks 140mm case fans
Memory 32GB (4 x 8GB SR) Patriot Viper Steel 4133Mhz DDR4 @ 3600Mhz CL14@1.45v Gear 1
Video Card(s) Asus Dual RTX 4070 OC
Storage WD Blue SN550 1TB M.2 NVME//Crucial MX500 500GB SSD (OS)
Display(s) AOC Q2781PQ 27 inch Ultra Slim 2560 x 1440 IPS
Case Phanteks Enthoo Pro M Windowed - Gunmetal
Audio Device(s) Onboard Realtek ALC1200/SPDIF to Sony AVR @ 5.1
Power Supply Seasonic CORE GM650w Gold Semi modular
Mouse Coolermaster Storm Octane wired
Keyboard Element Gaming Carbon Mk2 Tournament Mech
Software Win 10 Home x64
This is because some users apparently got into very political discussions and some comments were deleted. Thus the disjointed remaining comments..
No posts have been deleted.
 

qubit

Overclocked quantum bit
Joined
Dec 6, 2007
Messages
17,866 (3.00/day)
Location
Quantum Well UK
System Name Quantumville™
Processor Intel Core i7-2700K @ 4GHz
Motherboard Asus P8Z68-V PRO/GEN3
Cooling Noctua NH-D14
Memory 16GB (2 x 8GB Corsair Vengeance Black DDR3 PC3-12800 C9 1600MHz)
Video Card(s) MSI RTX 2080 SUPER Gaming X Trio
Storage Samsung 850 Pro 256GB | WD Black 4TB | WD Blue 6TB
Display(s) ASUS ROG Strix XG27UQR (4K, 144Hz, G-SYNC compatible) | Asus MG28UQ (4K, 60Hz, FreeSync compatible)
Case Cooler Master HAF 922
Audio Device(s) Creative Sound Blaster X-Fi Fatal1ty PCIe
Power Supply Corsair AX1600i
Mouse Microsoft Intellimouse Pro - Black Shadow
Keyboard Yes
Software Windows 10 Pro 64-bit
@Tatty_One Could you please unlock my OP as I need to edit it. I've already clicked Report a while back, but my request wasn't actioned.
 

Tatty_Two

Gone Fishing
Joined
Jan 18, 2006
Messages
25,793 (3.88/day)
Location
Worcestershire, UK
Processor Rocket Lake Core i5 11600K @ 5 Ghz with PL tweaks
Motherboard MSI MAG Z490 TOMAHAWK
Cooling Thermalright Peerless Assassin 120SE + 4 Phanteks 140mm case fans
Memory 32GB (4 x 8GB SR) Patriot Viper Steel 4133Mhz DDR4 @ 3600Mhz CL14@1.45v Gear 1
Video Card(s) Asus Dual RTX 4070 OC
Storage WD Blue SN550 1TB M.2 NVME//Crucial MX500 500GB SSD (OS)
Display(s) AOC Q2781PQ 27 inch Ultra Slim 2560 x 1440 IPS
Case Phanteks Enthoo Pro M Windowed - Gunmetal
Audio Device(s) Onboard Realtek ALC1200/SPDIF to Sony AVR @ 5.1
Power Supply Seasonic CORE GM650w Gold Semi modular
Mouse Coolermaster Storm Octane wired
Keyboard Element Gaming Carbon Mk2 Tournament Mech
Software Win 10 Home x64
@Tatty_One Could you please unlock my OP as I need to edit it. I've already clicked Report a while back, but my request wasn't actioned.
Just drinking my coffee at work, enjoying the peace for the first time in a while..... don't spoil it!
 

qubit

Overclocked quantum bit
Joined
Dec 6, 2007
Messages
17,866 (3.00/day)
Location
Quantum Well UK
System Name Quantumville™
Processor Intel Core i7-2700K @ 4GHz
Motherboard Asus P8Z68-V PRO/GEN3
Cooling Noctua NH-D14
Memory 16GB (2 x 8GB Corsair Vengeance Black DDR3 PC3-12800 C9 1600MHz)
Video Card(s) MSI RTX 2080 SUPER Gaming X Trio
Storage Samsung 850 Pro 256GB | WD Black 4TB | WD Blue 6TB
Display(s) ASUS ROG Strix XG27UQR (4K, 144Hz, G-SYNC compatible) | Asus MG28UQ (4K, 60Hz, FreeSync compatible)
Case Cooler Master HAF 922
Audio Device(s) Creative Sound Blaster X-Fi Fatal1ty PCIe
Power Supply Corsair AX1600i
Mouse Microsoft Intellimouse Pro - Black Shadow
Keyboard Yes
Software Windows 10 Pro 64-bit

Mindweaver

Moderato®™
Staff member
Joined
Apr 16, 2009
Messages
8,193 (1.50/day)
Location
Charleston, SC
System Name Tower of Power / Sechs
Processor i7 14700K / i7 5820k @ 4.5ghz
Motherboard ASUS ROG Strix Z690-A Gaming WiFi D4 / X99S GAMING 7
Cooling CM MasterLiquid ML360 Mirror ARGB Close-Loop AIO / CORSAIR Hydro Series H100i Extreme
Memory CORSAIR Vengeance LPX 32GB (2 x 16GB) DDR4 3600 / G.Skill DDR4 2800 16GB 4x4GB
Video Card(s) ASUS TUF Gaming GeForce RTX 4070 Ti / ASUS TUF Gaming GeForce RTX 3070 V2 OC Edition
Storage 4x Samsung 980 Pro 1TB M.2, 2x Crucial 1TB SSD / Samsung 870 PRO 500GB M.2
Display(s) Samsung 32" Odyssy G5 Gaming 144hz 1440p, ViewSonic 32" 72hz 1440p / 2x ViewSonic 32" 72hz 1440p
Case Phantek "400A" / Phanteks “Enthoo Pro series”
Audio Device(s) Realtek ALC4080 / Azalia Realtek ALC1150
Power Supply Corsair RM Series RM750 / Corsair CXM CX600M
Mouse Glorious Gaming Model D Wireless / Razer DeathAdder Chroma
Keyboard Glorious GMMK with box-white switches / Keychron K6 pro with blue swithes
VR HMD Quest 3 (128gb) + Rift S + HTC Vive + DK1
Software Windows 11 Pro x64 / Windows 10 Pro x64
Benchmark Scores Yes
I remember years ago a company I started working for had an old Employee punch-in time clock at the main employee door that I would have to fix the time every month.. because whenever they ran the facility on their main generator (think hospital Generator size) the clock would run less than 60hz which would in turn cause the time to be off over time. Once I figured out the issue was caused by the generator I put a UPS on it. :laugh:
 

Tatty_Two

Gone Fishing
Joined
Jan 18, 2006
Messages
25,793 (3.88/day)
Location
Worcestershire, UK
Processor Rocket Lake Core i5 11600K @ 5 Ghz with PL tweaks
Motherboard MSI MAG Z490 TOMAHAWK
Cooling Thermalright Peerless Assassin 120SE + 4 Phanteks 140mm case fans
Memory 32GB (4 x 8GB SR) Patriot Viper Steel 4133Mhz DDR4 @ 3600Mhz CL14@1.45v Gear 1
Video Card(s) Asus Dual RTX 4070 OC
Storage WD Blue SN550 1TB M.2 NVME//Crucial MX500 500GB SSD (OS)
Display(s) AOC Q2781PQ 27 inch Ultra Slim 2560 x 1440 IPS
Case Phanteks Enthoo Pro M Windowed - Gunmetal
Audio Device(s) Onboard Realtek ALC1200/SPDIF to Sony AVR @ 5.1
Power Supply Seasonic CORE GM650w Gold Semi modular
Mouse Coolermaster Storm Octane wired
Keyboard Element Gaming Carbon Mk2 Tournament Mech
Software Win 10 Home x64

qubit

Overclocked quantum bit
Joined
Dec 6, 2007
Messages
17,866 (3.00/day)
Location
Quantum Well UK
System Name Quantumville™
Processor Intel Core i7-2700K @ 4GHz
Motherboard Asus P8Z68-V PRO/GEN3
Cooling Noctua NH-D14
Memory 16GB (2 x 8GB Corsair Vengeance Black DDR3 PC3-12800 C9 1600MHz)
Video Card(s) MSI RTX 2080 SUPER Gaming X Trio
Storage Samsung 850 Pro 256GB | WD Black 4TB | WD Blue 6TB
Display(s) ASUS ROG Strix XG27UQR (4K, 144Hz, G-SYNC compatible) | Asus MG28UQ (4K, 60Hz, FreeSync compatible)
Case Cooler Master HAF 922
Audio Device(s) Creative Sound Blaster X-Fi Fatal1ty PCIe
Power Supply Corsair AX1600i
Mouse Microsoft Intellimouse Pro - Black Shadow
Keyboard Yes
Software Windows 10 Pro 64-bit
Thanks T, I've added a second link to this story in my OP now. :)
 

FordGT90Concept

"I go fast!1!11!1!"
Joined
Oct 13, 2008
Messages
26,259 (4.65/day)
Location
IA, USA
System Name BY-2021
Processor AMD Ryzen 7 5800X (65w eco profile)
Motherboard MSI B550 Gaming Plus
Cooling Scythe Mugen (rev 5)
Memory 2 x Kingston HyperX DDR4-3200 32 GiB
Video Card(s) AMD Radeon RX 7900 XT
Storage Samsung 980 Pro, Seagate Exos X20 TB 7200 RPM
Display(s) Nixeus NX-EDG274K (3840x2160@144 DP) + Samsung SyncMaster 906BW (1440x900@60 HDMI-DVI)
Case Coolermaster HAF 932 w/ USB 3.0 5.25" bay + USB 3.2 (A+C) 3.5" bay
Audio Device(s) Realtek ALC1150, Micca OriGen+
Power Supply Enermax Platimax 850w
Mouse Nixeus REVEL-X
Keyboard Tesoro Excalibur
Software Windows 10 Home 64-bit
Benchmark Scores Faster than the tortoise; slower than the hare.
6 seconds ahead (time.windows.com direct)
0.1 seconds ahead (server via time.windows.com)
0.6 seconds ahead (server via time.nist.gov)
0.3 seconds ahead (server)
0.5 seconds ahead (server)

Okay, I give up.
 

qubit

Overclocked quantum bit
Joined
Dec 6, 2007
Messages
17,866 (3.00/day)
Location
Quantum Well UK
System Name Quantumville™
Processor Intel Core i7-2700K @ 4GHz
Motherboard Asus P8Z68-V PRO/GEN3
Cooling Noctua NH-D14
Memory 16GB (2 x 8GB Corsair Vengeance Black DDR3 PC3-12800 C9 1600MHz)
Video Card(s) MSI RTX 2080 SUPER Gaming X Trio
Storage Samsung 850 Pro 256GB | WD Black 4TB | WD Blue 6TB
Display(s) ASUS ROG Strix XG27UQR (4K, 144Hz, G-SYNC compatible) | Asus MG28UQ (4K, 60Hz, FreeSync compatible)
Case Cooler Master HAF 922
Audio Device(s) Creative Sound Blaster X-Fi Fatal1ty PCIe
Power Supply Corsair AX1600i
Mouse Microsoft Intellimouse Pro - Black Shadow
Keyboard Yes
Software Windows 10 Pro 64-bit
I guess they all tend to average to the correct time, lol.
 

Norton

Moderator - Returning from the Darkness
Staff member
Joined
Dec 21, 2011
Messages
14,108 (3.15/day)
Location
Northeast USA
System Name Main PC- Gamer- Main Cruncher/Folder and too many crunching/folding rigs
Processor Ryzen 5900X- Ryzen 5950X- Ryzen 3950X and etc...
Motherboard Asrock X570 Extreme4- MSI X570S Tomahawk MAX WiFi- MSI B450M Bazooka Max and etc...
Cooling Noctua NH-U14S (dual fan)- EK 360 AIO with push/pull fans- Corsair H115i RGB Pro XT and etc...
Memory 2x16GB GSkill FlareX 3200/c14- 4x8GB Corsair Vengeance 3600/c16- 2x16GB Team 3600/c18 and etc..
Video Card(s) MSI Gaming RX 6800- Asus RTX 3070 TUF OC- MSI Ventus GTX 1660Ti and etc...
Storage Main PC (1TB WD SN850- 2TB PNY CS 3040- 2TB Seagate Firecuda) and etc...
Display(s) Main PC (2x24" Dell UltraSharp U2414H)
Case Phanteks P600s- Seasonic Q704- Fractal Meshify C and etc...
Audio Device(s) Logitech Z625 THX 2.1 speakers
Power Supply EVGA 750 G3- SeaSonic DGC 750- EVGA P2 850 and etc...
Mouse G300s
Keyboard Corsair K65
VR HMD N/A
Software Windows 10 Pro or Ubuntu
Benchmark Scores Why sit on the Bench when you can get in the game and Crunch!!!
6 seconds ahead (time.windows.com direct)
0.1 seconds ahead (server via time.windows.com)
0.6 seconds ahead (server via time.nist.gov)
0.3 seconds ahead (server)
0.5 seconds ahead (server)

Okay, I give up.
Time keeps on slipping, slipping, slipping, into the future


Sorry, had to do it :p:laugh:

I remember years ago a company I started working for had an old Employee punch-in time clock at the main employee door that I would have to fix the time every month.. because whenever they ran the facility on their main generator (think hospital Generator size) the clock would run less than 60hz which would in turn cause the time to be off over time. Once I figured out the issue was caused by the generator I put a UPS on it. :laugh:
Generators have caused all kinds of problems with chart recorders at my job sites because of this. Thankfully PLC's and other controllers aren't usually affected by this too much.
 
Top