X399 Taichi 4-pin CPU power connector

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   My new Corsair TX850m PSU didn't come with the extra 4-pin CPU cable.  It just has one 24-pin and one 8-pin CPU cable.  

Can I just leave the 4-pin CPU port, which is located at the top left part of the mother board when the CPU is on the top, not connected?  
The manual says that 4-pin port for the VRAM.  What will I miss by not powering the VRAM?

Thanks

Edited by rocker76177617 - 10 Jan 2018 at 1:33am

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rocker76177617 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 10 Jan 2018 Status: Offline Points: 5	Post Options Post Reply Quote rocker76177617 Report Post Thanks(0) Quote Reply Topic: X399 Taichi 4-pin CPU power connector Posted: 10 Jan 2018 at 1:32am
	My new Corsair TX850m PSU didn't come with the extra 4-pin CPU cable. It just has one 24-pin and one 8-pin CPU cable. Can I just leave the 4-pin CPU port, which is located at the top left part of the mother board when the CPU is on the top, not connected? The manual says that 4-pin port for the VRAM. What will I miss by not powering the VRAM? Thanks Edited by rocker76177617 - 10 Jan 2018 at 1:33am

MisterJ Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 19 Apr 2017 Status: Offline Points: 1097	Post Options Post Reply Quote MisterJ Report Post Thanks(0) Quote Reply Posted: 10 Jan 2018 at 2:19am
	rocker76177617, please don't leave it unpowered. I suspect that VRAM is Voltage for RAM. You need a more modern power supply. Enjoy, John.
	Fat1 X399 Pro Gaming, TR 1950X, RAID0 3xSamsung SSD 960 EVO, G.SKILL FlareX F4-3200C14Q-32GFX, Win 10 x64 Pro, Enermx Platimax 850, Enermx Liqtech TR4 CPU Cooler, Radeon RX580, BIOS 2.00, 2xHDDs WD

kerberos_20 Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 06 Dec 2017 Location: czech republic Status: Offline Points: 3657	Post Options Post Reply Quote kerberos_20 Report Post Thanks(0) Quote Reply Posted: 10 Jan 2018 at 10:46pm
	that top left 4pin should be for pci-e devices (but dont use pcie connector...its different pinout) Edited by kerberos_20 - 10 Jan 2018 at 10:47pm

zlobster Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 02 Sep 2017 Status: Offline Points: 403	Post Options Post Reply Quote zlobster Report Post Thanks(0) Quote Reply Posted: 10 Jan 2018 at 11:51pm
	There are EPS12V splitter cables. Get one of these. Your PSU should be able to handle the load, even if you decide to OC.
	1700X ZP-B1 (stock); X370 Taichi (UEFI 3.10); 16GB F4-3200C14-8GFX XMP; 256GB 960 EVO; RX 580 NITRO+ 8GB

rocker76177617 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 10 Jan 2018 Status: Offline Points: 5	Post Options Post Reply Quote rocker76177617 Report Post Thanks(1) Quote Reply Posted: 11 Jan 2018 at 1:28am
	That 4 pin port on the top left is for VRM per ASROCK. I am not exactly sure what that does. I read somewhere powering that port is optional and in other places it is a must. So I am not sure what to make of it. I would like to hear it directly from ASRock. The 6 pin PCI-e port you are referring to is on the right side next to the SATA ports. I need to power it only when I use more than one GPU, I think. Considering the TX850m is little higher than their mainstream PSUs, I am surprised Corsair didn't include an extra 8 pin CPU cable or even 4 pin but they packed plenty of SATA cables than I care. Soon all of my storage will be M.2 based. Edited by rocker76177617 - 11 Jan 2018 at 1:32am

kerberos_20 Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 06 Dec 2017 Location: czech republic Status: Offline Points: 3657	Post Options Post Reply Quote kerberos_20 Report Post Thanks(0) Quote Reply Posted: 11 Jan 2018 at 6:22am
	welll im not exactly sure if its optional or not but few years ago there was only 24pin for cpu and pci devices with introduction of pentium4 (power hungry cpu at that time) extra 4pin was needed (24+4) with introduction of pci-express another 4pin got added as wattege over pci-e is higher than on pci (24+8) and threadripper just happens that it has one more cpu to feed (24+12) so up to you if its optional :)

housingman Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 12 Jan 2018 Status: Offline Points: 5	Post Options Post Reply Quote housingman Report Post Thanks(0) Quote Reply Posted: 12 Jan 2018 at 12:11am
	You definitely need the 4 pin connector plugged in. Please read this thread: http://forum.asrock.com/forum_posts.asp?TID=5905&PN=2&title=x399-c0-error-code

datonyb Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 11 Apr 2017 Location: London U.K. Status: Offline Points: 3139	Post Options Post Reply Quote datonyb Report Post Thanks(0) Quote Reply Posted: 12 Jan 2018 at 3:36am
	change psu to one that has enough support for the TR motherboards power needs to be quite fair the sales webpage and details do clearly show you what psu would be needed when designing your new system build a fast/simple option would be to buy a cpu/eps splitter plug autoleads do many versions and can be found on amazon
	[url=https://valid.x86.fr/jpg250][/url] 3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold

BC_ATM Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 14 Apr 2018 Status: Offline Points: 6	Post Options Post Reply Quote BC_ATM Report Post Thanks(0) Quote Reply Posted: 15 Apr 2018 at 2:10am
	Same issue for me but I have cables to all 3 power connectors...

BC_ATM Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 14 Apr 2018 Status: Offline Points: 6	Post Options Post Reply Quote BC_ATM Report Post Thanks(0) Quote Reply Posted: 15 Apr 2018 at 2:55am
	Also the times it did boot without power to the 4 pin.