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VRM on the new AM4 motherboards

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post #3261 of 3272 (permalink) Old 02-03-2019, 01:27 AM
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post #3262 of 3272 (permalink) Old 03-02-2019, 10:08 AM - Thread Starter
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Maybe some noted but I bought the Biostar X470GT8 and try to MEM OC on it. was a disaster as it currently is with it's BIOS with only Agesa 1.0.0.4C still for RAM.

Either way I'm kinda seeing and looking at the VRM and seeing it's way overkill for what these AM4 Ryzen processors can possibly draw in power in normal usage.

I've got a dud launch day Ryzen 1700 and even with this better VRM I'm not really improving my results that much from the AB350-Gaming 3 I had used before. The VRM are a day and night apart concerning people here.

We are comparing a 4+3 phase design using 4C10N+4C06N to a doubled 4+2(8+4 effective) IR3555 60Amp parts.

I could reach a ~stable~4.0Ghz for desktop and games with my Ryzen 1700 on the AB350-Gaming 3 (not stress test tolerable) without crashes and whatnot having a 70mm AMD stock fan spinning 3000-5000rpm on the VRM to cool it down. Though still it was high heat. You would burn out the VRM if trying prime AVX or something of the likes. it was usable and ~stable~.
The required voltage was ~1.480V measuring behind the socket with a digital multimeter under load for stability testing the little you did.

On this board the Biostar X470GT8 with a full load-out on the VRM department I don't have a concern with VRM temperatures any more. I did some testing and to reach ~stable~ 4.1Ghz speeds on my Ryzen 1700 sample I have to dazzle it with around ~1.600V. LOL! ridiculous! Even then it was only reaching like 60degrees vrm for the quick benches I did probably will reach 70C on extended test though who wants to risk it with that voltage?!
Either way my WC cpu block and system can't cool the CPU well enough with that voltage anyway reaching 75C core instantly under loads and becoming unstable as it maximizes the safe temp limit. (75 degrees)
For somewhat sane use I went to 4.05Ghz and it runs fine ~1.530V socket measured. VRM may max around 55C in normal usage stays below 40 in idle and cpu doesn't get unstable because of reaching max core temperature that easily as the insane I tried for 4.1Ghz clocks.

But the problem is... I'm barely seemingly scratching the surface what this VRM could do. The BIOS max voltage allowed is insane 2.1volts if I recall correctly now. Who wants to try? HAH!

NEW: Biostar x480GT8 ~4.0Ghz CPU, 3200Mhz RAM.... not really better
OLD: Ryzen 7 1700 @ ~4.0Ghz, Gigabyte GA-AB350 Gaming 3, F25 BIOS Agesa 1.0.0.6
4x8Gb Kingston HX434C19FB2K2/16 3466C19 1.2V @ 3733Mhz 16.(17).23.17.34.71.tRFC 568 1T 1.490V (Micron E-die 16nm)
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post #3263 of 3272 (permalink) Old 03-02-2019, 11:58 AM
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Well given the choice , you would want to have a VRM to deal with the popular CLC watercoolers (bad airflow over VRM + preheat).


Quote: Originally Posted by asdkj1740 View Post

Too little too late. B450 Pro Carbon has been out for a long time already, the heatsink isn't covered in plastic, and the mosfets are still better. Also B450 Pro Carbon has a USB 3.1 type C on the back panel.


From what I've seen the B450-E also runs way too expensive , in USA it's $180 through third party only and in Germany cost about 10 more than B450 Pro Carbon.

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post #3264 of 3272 (permalink) Old 03-19-2019, 06:02 PM
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Has anyone looked at this latest, forth coming release;

https://www.funkykit.com/reviews/mot...rboard-review/

Very interesting Matx model yet nothing is mentioned anywhere here on OCN.

Just surprised why this particular model has slipped in under the OCN radar.....
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post #3265 of 3272 (permalink) Old 03-24-2019, 05:18 PM
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Quote: Originally Posted by Nighthog View Post
All getting Hyped for the new Ryzen competition!?

So I was thinking of pre-ordering but the lack of decent VRM sections of most release motherboards seems to be straight up awful if you wanna overclock any unless you want to spend 200$++

I'm a cheapskate enthusiast and want to spend as little as possible for great things. Comparing all the boards available I'm disappointed for what kind of power delivery we will be getting with most boards.

Basically all boards arrive with max 4phase design unless you go up to premium deluxe bling designs that all add cost to the absurd when you only want that last part about VRM better the rest you care not much at all about.

With the leak of the new AMD Ryzen 7 1700 65TDP chip hitting max around 3.8Ghz on the cheaper boards mentioned(most 4-phase and cooking). And topping 4.05Ghz on the premium deluxe boards with the better VRM such as Asus VI hero or Asrock Taichi. I'm torn..

I really don't want to spend as much on the motherboard as the cpu in the end. (the cheap Ryzen 7 1700)

Does anyone know which power designs the various boards have yet?

I'm guessing the cheaper MSI boards have those awful 4-array Nikos per phase. (read bad things about those) Unless you like smoked computers.
The Titanium being the most expensive release board with only 6-phase what it seems like doesn't attract.(though I guess they are the premium set of VRM chips(not any NIKOS there)

The Gigabyte mention low(RSD)on and they appear to be their usual design I guess. Vishay?
They seem to be 1 high, 2 low-side design per phase.
Problem here is they have the same design all they way up until their premium boards such as "Gigabyte X370 GA-AX370-Gaming 5".
All lower tier boards have only 4-phase and only at "gaming 5" do we get a what looks like (8+2/6+4)-phase design for cpu power.
And you can get 2 TWO! of the 4-phase boards for the same price as that Gaming 5... Really?

That lowRDSon 4 phase design I've seen been rated to ~140Watt Max with extra cooling unsinked on much older motherboards. Is it still similar?
My old Am2+ board with this 4 phase design cooks on 1.4volts and needs extra fan or extra heatsinks with a old Phenom 1 at 3Ghz..(what the wattage may now be for that old clunker I still use)

They really are tiering out OC only to the expensive boards aren't they?

So what are you supposed to do? It seems like you need an extra 100$ for the better VRM which means you could actually just buy the 1700X instead and keep the cheap board and have same kind of results but now guaranteed with NO OC?

WARNING: Consider the above INACCURATE!
Below more accurate:
__________________________________________________ _______________________________
AMD AM4 Motherboard VRM List (german)
https://www.hardwareluxx.de/communit...e-1155146.html
Well the the Asrock X470 Taichi can be pruchased at under $200 when it is on sale. Saw it for like $189 on Newegg a week or 2 ago. I have the X470 Gaming M7 AC board from MSI. It is just a step below Taichi in vrm quality but has been more than adequate for overclocking my 2700X which I run 24/7 at 4.2 GHZ. I believe when the new X570 boards are released MSI will qualitatively improve the vrm on their 2 top X570 brands: Gaming M& AC and Pro carbon. They will have to to support 12 and 16 core cpus for overclocking.

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post #3266 of 3272 (permalink) Old 03-29-2019, 08:25 AM
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Quote: Originally Posted by Elrick View Post
Has anyone looked at this latest, forth coming release;

https://www.funkykit.com/reviews/mot...rboard-review/

Very interesting Matx model yet nothing is mentioned anywhere here on OCN.

Just surprised why this particular model has slipped in under the OCN radar.....
According to this post it seems to be a 4+2 phase design:

PWM is an uPI Semi uP9505P, wich can handle up to 4+2 phases. Each phase has an uP1362S driver.

4 CPU VCC: 2x SM4336 / 1x SM4337
2 SoC VCC: 2x SM4336 / 2x SM4337

EDIT: Mine just arrived and it came with Nikos MOSFETS instead of Sinopower. Everything else is the same:

4 CPU VCC: 2x PK618BA / 1x PZ0903BK
2 SoC VCC: 2x PK618BA / 2x PZ0903BK
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Last edited by Breogan; 04-04-2019 at 08:11 AM.
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post #3267 of 3272 (permalink) Old 04-06-2019, 08:02 PM
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Quote: Originally Posted by Breogan View Post
According to this post it seems to be a 4+2 phase design:

PWM is an uPI Semi uP9505P, wich can handle up to 4+2 phases. Each phase has an uP1362S driver.

4 CPU VCC: 2x SM4336 / 1x SM4337
2 SoC VCC: 2x SM4336 / 2x SM4337

EDIT: Mine just arrived and it came with Nikos MOSFETS instead of Sinopower. Everything else is the same:

4 CPU VCC: 2x PK618BA / 1x PZ0903BK
2 SoC VCC: 2x PK618BA / 2x PZ0903BK

Thank you for that.


Maybe you should send it back to the retailer and DEMAND the Sinopower VRM version?


Much appreciated .

Last edited by Elrick; 04-06-2019 at 08:10 PM.
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post #3268 of 3272 (permalink) Old 04-11-2019, 09:59 PM
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Just placed an order for the ASRock B450M Steel Legend .
It shall be going into a SilverStone Fortress Series FT03B Black MicroATX Mini Tower I have sitting around in it's box. Have lots of packaging of old cases so needed something decent and up to date, within the AMD mATX world of hardware.

Just trying to decide between using a current 2600X or a 2400G left from my son's brief update last year.
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post #3269 of 3272 (permalink) Old 04-30-2019, 09:59 AM
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Planning on building a system with 2400g. Gonna OC the iGPU only. Which of these mobo will be better for this, keeping an upgrade to 3000 series on mind:
1. MSI Bazooka Plus
2. Asrock Steel Legend b450m
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post #3270 of 3272 (permalink) Old 05-02-2019, 11:27 AM
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Quote: Originally Posted by BDOCer View Post
Planning on building a system with 2400g. Gonna OC the iGPU only. Which of these mobo will be better for this, keeping an upgrade to 3000 series on mind:
1. MSI Bazooka Plus
2. Asrock Steel Legend b450m
The Steel Legend, due to the additional heatsink.
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