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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


Studying abroad, ditched the crappy laptop for a do-all laptop double. Dried factory CPU paste, long memory timings, cooler cools the inductors but not the mosfets and an inch of unused internal space on both left and right

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV system agent undervolt) GPU: GTX 1060 6GB Mobile (1696MHz 0.812V ~ 1860MHz 0.95V) RAM: 12GB DDR4-2666 19-19-19-43 2T Storage: 128GB Toshiba NVMe SSD (KBG30ZMV128G) + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) Monitor: 1080p 120Hz IPS G-sync

 

The best thing to do is reading the clock speed that doesnt end in a pair of zeros. Software voltage readings are wrong if your motherboard's not a high end model

CPU: i7-2600K 4493MHz (multiplier: 43x) 1.35V (software) --> 1.4V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 104.5MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 10-11-11-30 2T 2133MHz, custom: 10-11-10-30 1T 2229MHz) GPU: Asus GTX 1070 Dual 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 (OC'd 150Hz) TN Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Results: Cinebench R15 Single thread:159 Multi-thread: 770 (thx Meltdown Spectre patch) Super Pi (v1.5 from Techpowerup, PI value output) 16K: 0.11s 1M: 8.4s 32M: 7m 45.9s

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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.


Studying abroad, ditched the crappy laptop for a do-all laptop double. Dried factory CPU paste, long memory timings, cooler cools the inductors but not the mosfets and an inch of unused internal space on both left and right

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV system agent undervolt) GPU: GTX 1060 6GB Mobile (1696MHz 0.812V ~ 1860MHz 0.95V) RAM: 12GB DDR4-2666 19-19-19-43 2T Storage: 128GB Toshiba NVMe SSD (KBG30ZMV128G) + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) Monitor: 1080p 120Hz IPS G-sync

 

The best thing to do is reading the clock speed that doesnt end in a pair of zeros. Software voltage readings are wrong if your motherboard's not a high end model

CPU: i7-2600K 4493MHz (multiplier: 43x) 1.35V (software) --> 1.4V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 104.5MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 10-11-11-30 2T 2133MHz, custom: 10-11-10-30 1T 2229MHz) GPU: Asus GTX 1070 Dual 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 (OC'd 150Hz) TN Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Results: Cinebench R15 Single thread:159 Multi-thread: 770 (thx Meltdown Spectre patch) Super Pi (v1.5 from Techpowerup, PI value output) 16K: 0.11s 1M: 8.4s 32M: 7m 45.9s

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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, ACER Predator 27", HYPERX Alloy Elite KB, 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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