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TommyH

2 MB Headers on MSI MEG Z390 ACE (i9 9900k)

Guys, i was wrong. The Bequiet 750w Straight power has a second MB header! The 650W (or under) didnt have the cable in the Package. Sorry for that!

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Posted · Original PosterOP

Hi ! i have bought a MEG Z390 Ace. Can i use the I9 9900k with 1 CPU Header ? Because i have a Bequiet 750w Straight power and it has only one MB cable. ( I dont need to overclock the i9.) Thx

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Yes, your CPU wont pull enough power to need more than 1 EPS 8pin connector


CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: 1TB HP EX920 PCIe x4 M.2 SSD + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172), 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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Posted · Original PosterOP
Just now, Jurrunio said:

Yes, your CPU wont pull enough power to need more than 1 EPS 8pin connector

Thank you for the answer ! So the second header is only for overclocking right?

 

 

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7 minutes ago, TommyH said:

Thank you for the answer ! So the second header is only for overclocking right?

 

 

No, the second header is only for LN2, 6.9Ghz, 1.8V overclocking. A single 8-pin EPS cable is sufficient for any plausible overclock that you are going to run as a daily driver.

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15 minutes ago, TommyH said:

Thank you for the answer ! So the second header is only for overclocking right?

 

 

liquid nitrogen or dry ice overclocking at that. Even liquid cooled overclocking is fine with a single 8pin EPS connector giving power.


CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: 1TB HP EX920 PCIe x4 M.2 SSD + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172), 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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Actually you do need to connect BOTH EPS (CPU) power cables per the manual.

 

Page 38 of the MSI Manual.  https://www.msi.com/Motherboard/support/MEG-Z390-ACE#down-manual

 

They even highlight it, here is what it says exactly:

 

Make sure that all the power cables are securely connected to a proper ATX power supply to ensure stable operation of the motherboard.

 

You can buy another power cable from Bequite, make sure you call them and get the correct cable.

 

You can also call MSI and ask them directly about the power connections.
 


i9 9900K @ 5.0 GHz, NH D15, 32 GB GSKILL Trident Z RGB, AORUS Z390 MASTER, EVGA RTX 2080Ti FTW3 Ultra, Samsung 970 EVO Plus 500GB, Samsung 860 EVO 1TB, Samsung 860 EVO 500GB, ASUS ROG Swift PG279Q 27", Corsair K95 RGB Platinum, Logitech Gaming Pro Mouse, CM Master Case 5, Seasonic Prime Titanium Ultra 750W. 

 

NEW PSU Tier List      MB Tier List

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Posted · Original PosterOP · Best Answer

Guys, i was wrong. The Bequiet 750w Straight power has a second MB header! The 650W (or under) didnt have the cable in the Package. Sorry for that!

Inked20190323_133931575_iOS_LI.jpg

Inked20190323_133938834_iOS_LI.jpg

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