Thursday, January 23rd 2020
ASUS Unveils ROG Zenith II Extreme Alpha Motherboard: Improved CPU VRM
ASUS updated its AMD socket sTRX4 motherboard series with the new ROG Zenith II Extreme Alpha, a slight step-up from the original ROG Zenith II Extreme that debuted with AMD's 3rd gen Ryzen Threadripper family. Although ASUS' entire sTRX4 motherboard lineup will support the upcoming 64-core Threadripper 3990X, the new Extreme Alpha is better designed for overclocking it. The new board looks visually identical to the original ROG Zenith II Extreme, and has an almost-identical feature-set, with the only difference being the CPU VRM solution. The new ROG Zenith II Extreme Alpha implements a 16-phase CPU VRM with Infineon TDA21490 power-stages replacing the TDA21472 power-stages on the original ROG Zenith II Extreme (possibly increase output current or I-out from 70 A to 90 A). This could marginally increase the product price. The rest of the feature-set is identical.
23 Comments on ASUS Unveils ROG Zenith II Extreme Alpha Motherboard: Improved CPU VRM
Vendors writing rubbish on their website is an entirely different problem ("Nvidia graphics 4GB VRAM" anyone?)
Similar thing happened when I bought my ROG Zenith Extreme for my 2950X.
Gigabyte doesn't tell you anything about the VRM in the name of revision 1.0, why would they do that in subsequent revisions? They tell you it's a different revision, it's up to you to look up the differences.
Asus being Asus.
I feel bad for any fools who bought that X399 board that had a VRM that overheated if you actually tried overclocking a 2990...
Their marketing full of lies...
The Asus fanboys having to go all the way back to X58 to go what about Gigabyte!
Heh
Doesn't make the original boards bad or anything.
For example, whatever gigabyte did or may have done, it is absolutely irrelevant and not a defense or justification whatsoever for whatever Asus has done. We've never, nor will we ever here the following defense in a court of law:
Defendant: "Your Honor, Yes I murdered that person. But I believe I should be found 'Not Guilty' due to the fact that there are numerous other individuals committing murder as well."
Judge: "What you've just said is one of the most insanely idiotic things I have ever heard. At no point in your rambling, incoherent response were you even close to anything that could be considered a rational thought. Everyone in this room is now dumber for having listened to it. I find you guilty, and may God have mercy on your soul."
Humor aside, whenever someone tries to defend the actions of someone or something by pointing at the actions of someone or something else, they're basically announcing that they're incapable of a legitimate defense or justification and I feel as though it's the duty of everyone in favor of logic observing it to give this ridiculous "defense" absolutely no quarter and to attack it whenever it manifests.... Which is mainly, for example, on sites like Wccftech where if an article discusses some alleged or proven underhanded behavior by Nvidia, its self-appointed defenders will immediately chime in with:
"... But... But... But 12 years ago Intel did [insert some completely irrelevant and unrelated example]..."
-or-
"... But Intel did [insert perceived offense] this too..."
P.S. I'm not a fanboy of any brand or company, I'm a fanboy of logic and legitimate debate, so whenever someone is tryng to utilize any "argument" that's either irrelevant or logically fallacious, I feel as though I have a compulsory duty to bring it to the attention of those involved
Gigabyte did it properly at first outing. Went with XL-ATX, stuffed Aorus Extreme with monstrously overkill VRM and it worked amazingly.
Asus thought, oh... we can cheap-out a bit on our flagship board... and then realized that VRM may not be up to snuff with 3990X/$. So now they basically manufacturing two identical boards with two different VRMs. Whoever is responsible for such wasteful practices should be fired at once. If they would redesign ZE2A with 3 x16 PCI express slots I would congratulate them. Just enough for 2 rendering VGAs and 1 quad NVMe card or 3 rendering VGAs. As things stands except Gigabyte (XL-ATX Aorus Extreme and Designare) and AsRock Taichi all other boards cannot plug 3 or 4 2-slot VGAs. I know it's rare, but these boards cost fortune and primarily are not designed as gaming platforms. Designers should think about this stuff and not tinker how to stuff RGB everywhere while compromising motherboard functionality.
We talking about a $750+ mobo, with VRM that theoretical could deliver 1344W (TDA21472) and that now can do 1728W (TDA21490).
(16 x 90A = 1440 ampere X 1.2V = 1728W)
And yes 1728W is is pure theoretical.
As when you run Prime95 @ 4GHz this would be what the old VRMs dissipate on heat, these new ones would be marginal better, but also properly more stable and/or faster, and better is better, so why not change.
- 200A = 16W
- 300A = 24W = 3960X
- 400A = 32W = 3970X
- 600A = 59W = 3980X
- 800A = 96W = 3990X (*)
(*)With 800A it runs out of spec, the motherboard power connections of 24 (180W) + 2x 8 pin (2x 235W), but the old and new VRMs could handle it easily.Instead of taking what ASUS is doing as positive, everyone here thinks they screwed up and are fixing it now. :(