AMD launches Zen+ 12nm Ryzen and X470 motherboards

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PingSpike

Lifer
Feb 25, 2004
21,733
565
126
I'm waiting to see the IOMMU groups on the X470 boards. There's not a huge chance, but there's a chance the chipset lanes will be better separated.
 

Justinbaileyman

Golden Member
Aug 17, 2013
1,980
249
106

Thank you for posting the links, this got me super excited!! Oh also after clicking on the second link if you scroll down to the bottom of the page and click on the next page button they also reveal the X470 Taichi.
Or this is the direct link https://videocardz.com/75753/asrock-x470-taichi-taichi-ultimate-leaked
 

Justinbaileyman

Golden Member
Aug 17, 2013
1,980
249
106
OMG, just noticed that every single x470 motherboard now has 2 eps connectors for the cpu.
So now not only do I have to upgrade the motherboard but also my PSU!!
 

EXCellR8

Diamond Member
Sep 1, 2010
3,982
839
136
Hopefully there isn't another board shortage out of the gate but I suppose it's totally possible. There's no way I'd spend the money on faster DDR4 right now but I'm not totally against moving to a 2700/2700X at some point even though I love the first gen chip and board, the latter of which I would likely opt to keep and retain the existing memory also.
 
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ao_ika_red

Golden Member
Aug 11, 2016
1,679
715
136
OMG, just noticed that every single x470 motherboard now has 2 eps connectors for the cpu.
So now not only do I have to upgrade the motherboard but also my PSU!!
Not all of them, just the flagship one. Biostar even has some balls by putting single 4-pin EPS on their "Racing GTN" board.
 

Ajay

Lifer
Jan 8, 2001
16,094
8,106
136
OMG, just noticed that every single x470 motherboard now has 2 eps connectors for the cpu.
So now not only do I have to upgrade the motherboard but also my PSU!!
That’s weird, isn’t a 12v EPS connector good for 150W?? Maybe at a 4.3GHz all core overclock the power draw is > 150W.
 

Justinbaileyman

Golden Member
Aug 17, 2013
1,980
249
106
That’s weird, isn’t a 12v EPS connector good for 150W?? Maybe at a 4.3GHz all core overclock the power draw is > 150W.
I bet its needed to even get over 4Ghz all core. I was hoping to get 4.2Ghz no more no less with a board with a single 8pin eps connector as that is all I have on my psu.Still waiting on the other vendors to reveal there products before I make a decision on a new mobo. But so far I am liking the taichi minus the extra eps connector is has..
 

Ajay

Lifer
Jan 8, 2001
16,094
8,106
136
Single EPS12V is fine up to ~450W.

You'll blow VRM (and the CPU) before running into the limit.

Really, >9 amps per pin, isn't that pushing things a bit? I guess 300W would be 'safe', but I don't know what the spec limit is.
 

Markfw

Moderator Emeritus, Elite Member
May 16, 2002
25,752
14,783
136
Single EPS12V is fine up to ~450W.

You'll blow VRM (and the CPU) before running into the limit.
My guess would be less strain on power delivery(cooler lines) to what may be much better VRM's to handle higher overclocks, or even stock.
 
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The Stilt

Golden Member
Dec 5, 2015
1,709
3,057
106
Really, >9 amps per pin, isn't that pushing things a bit? I guess 300W would be 'safe', but I don't know what the spec limit is.

The EPS connectors are specified for 9 - 13A per contact, depending on the quality.

18 & 16 AWG wires can carry 8.5 - 12A without any issues either.

Why do they add Two EPS? For controlling Power management?

The second connector decreases the voltage drop, but the with the duty cycles (< 10 - 12.5%) the VRM is operating a small difference in input voltage is pretty much irrelevant.
Mostly for marketing.
 

fleshconsumed

Diamond Member
Feb 21, 2002
6,485
2,362
136
So, the new boards have 8pin power connector + 4 pin power connector. Will they work if I leave the additional 4pin power connector unplugged?
 

Justinbaileyman

Golden Member
Aug 17, 2013
1,980
249
106
I read ROG CROSSHAIR VI EXTREME's Manual and It says :

Do not forget to connect the 8-pin EATX12 V power plug.otherwise , the system will not boot

So only 8-pin requires.
Yeah... I dont know if that is true, I had a Asus X99 motherboard that had 2 eps connectors just like the new x470 motherboards are gonna have and it refused to power on or boot with out the extra eps connector plugged in.
 
May 11, 2008
20,055
1,290
126
Yeah... I dont know if that is true, I had a Asus X99 motherboard that had 2 eps connectors just like the new x470 motherboards are gonna have and it refused to power on or boot with out the extra eps connector plugged in.

I have no detailed information about the board, but that may have been because of a multiphase smps (VRM) with for example 6 phases where each pair of three phases is powered from a different EPS connector to balance the current load. Similar as how gpu graphic card designers have smps that distribute the current over two PCIe power connectors to pairs of phases.
 
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IRobot23

Senior member
Jul 3, 2017
601
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