Motherboard and System Reviews

Kate Ewart
Kate Ewart
Joined: 18 Jun 23
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Tom M wrote:My landlord

Tom M wrote:
My landlord doesn't allow outside clothes lines :(

Sounds like m'colleague.  Although he owned the house, he wasn't allowed a satellite dish because it spoiled the look of the street.  He also had to leave his garden open plan (as in no privacy, no fences, very weird).  He installed a transparent satellite dish and got away with it:

Scrooge McDuck
Scrooge McDuck
Joined: 2 May 07
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Kate Ewart schrieb:16A

Kate Ewart wrote:

16A 220V, move to France

No, that's a German CEE 7/3 "Schuko" socket and CEE 7/4 plug; used in DE, NL, Scandinavia, Spain, SE Europe, Russia.

French CEE 7/5 sockets look like this:

16A, 230V, French CEE 7/5; used in FR, BE, Poland, Czech Rep., Slovakia. But anyway, different continental sockets are compatible to the newer combined CEE7/7 plugs.

But what I'm advocating all the time: for high continuous loads >12A; don't take the above but suitable, standardized CEE17 connectors. That's the safest.

Kate Ewart
Kate Ewart
Joined: 18 Jun 23
Posts: 25
Credit: 81444
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Oh, it looked the same, I

Oh, it looked the same, I thought they were all compatible?  Anyway my point remains, they're all 16A 220V.

They're becoming quite compatible, the Universal European Plug (CEE 7/7) fits German or French.  Even those pesky Italians have a combined socket. to take their rectangular plugs or the round ones.

CEE17?!  Those are three phase!  Unless you're sharing the load between all the pins, you're not gaining much, they're still rated at 16A.

Scrooge McDuck
Scrooge McDuck
Joined: 2 May 07
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Kate Ewart

Kate Ewart wrote:
[...]Anyway my point remains, they're all 16A 220V.

I know, I'm getting annoying as Steve Urkel, but... (my last post on this topic)

Most people think they are 16A plugs. But that means 16A for peak loads, like a kettle (5 minutes). You can't put a continuos load of 16A on such a plug. Pins would get extremely hot because the narrow metal clamps in the socket provide only small contact surfaces to the pins. Contact pressure varies (new or worn-out socket). The plug casing will get very hot and change colour to yellowish after 30..45 minutes and you may smell burning odour. Excessive heat will be transferred into the wall mounted wires, not good for insulation.

It's no good idea DIYing a power distribution which continuously puts 14A...16A on such a small plug. Yes, socket circuits are fused with 16A. But the fuse only protects the rigid 2.5 mm² (~13 AWG) wires in the wall, not connected plugs, devices, or flex. (I'm no professional electrician, but at least once qualified in the army as an electrician/mechanic for power generators up to 12 kW. field camp power supply).

There are no electric devices on the market which drag more than 12 amps with such plugs. All dishwashers, dryers, washing maschines, even small one-phased chargers for battery-electric cars are limited to 12A. Otherwise, at 16A, they would scorch a frequently used, worn out socket within 30 minutes. The most powerful on the market is a kettle (British manifacturer: "Russel-Hobbs"). Type plate says: "230V, 2500-3000W" (11...13A), measured: max. 11A.

Kate Ewart wrote:
CEE17?!  Those are three phase!  Unless you're sharing the load between all the pins, you're not gaining much, they're still rated at 16A.

Splitting up three-phased AC is the solution to distribute loads.

But CEE17 is a modular system (intl. IEC60309 standard); different plugs for 1, 2, or 3 phased AC, different voltages (colour) and amperage (diameter). Two types are common: the blue colored, single-phase, three-pin 230V 16A plug at campsites, caravans, in marinas, pleasure crafts, yachts. And the larger red colored, three-phase, five-pin 400V plugs with different diameters (16A, 32A, ...). Standard in companies, industry, construction sites, actually everywhere.

These safely carry continuos high loads (which sparked discussion initially). Contact surfaces are many times larger. Safety first!

Tom M
Tom M
Joined: 2 Feb 06
Posts: 6455
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I currently can be

I currently can be competitive in several Boinc projects (e@h [9M or higher, u@h, 1.5M or higher).

I am looking at several possible Epyc Motherboard upgrades.

  1. 2 CPU version 2 Epyc MB supports Naples and Romero  $380 (need another 7742 CPU, cooler, ram)
  2. 1 Cpu Mllan MB that also supports Romero.  ~$550-650 (could start with a 7742 CPU and upgrade later).
  3. 2 Cpu Milan MB that also supports Romero.   ~$800 (could start with 2 x 7742 CPU and upgrade later)

MB prices from current eBay listings for "Epyc Milan Motherboard".

I am looking for a Milan-type MotherBoards because it gives me a CPU upgrade path past Romero cpus.

If I want to become highly competitive (to challenge for the number one ranking) in U@H. I am going to need either a dual romero MB.  Or at least a Milan MB with a Milan CPU to be able to challenge another participant who is running a Milan (ver3) MB.

Just pondering.

Tom M

 

 

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)  I want some more patience. RIGHT NOW!

mikey
mikey
Joined: 22 Jan 05
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I too have a motherboard

I too have a motherboard question....I have SSD drives in most of my pc's now would it be an upgrade in boot-up speed to go to a pcie3 or 4 adapter with an NVMe drive on it? Yes I know if it's not a Eufi bios then it won't boot off them, though some people have said the Samsungs will but it doesn't appear to be consistent, but the prices are dropping like rocks for the NVMe drives and since most of my MB's don't have built-in NVMe support I am pondering my options.

Keith Myers
Keith Myers
Joined: 11 Feb 11
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If you put some sort of Boot

If you put some sort of Boot Manager in play for the system, then yes you can boot from a PCIE hosted NVMe drive as long as it has an option ROM in its firmware.

Booting from the NVMe drive would be much faster than a SATA SSD.

 

mikey
mikey
Joined: 22 Jan 05
Posts: 12691
Credit: 1839095661
RAC: 3709

Keith Myers wrote: If you

Keith Myers wrote:

If you put some sort of Boot Manager in play for the system, then yes you can boot from a PCIE hosted NVMe drive as long as it has an option ROM in its firmware.

Booting from the NVMe drive would be much faster than a SATA SSD. 

Okay thank you very much that helps alot.

Keith Myers
Keith Myers
Joined: 11 Feb 11
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Credit: 18744270648
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From what I Googled, it looks

From what I Googled, it looks like the Clover Boot Manager is the goto utility along with the Samsung 950 Pro M.2 SSD.

 

mikey
mikey
Joined: 22 Jan 05
Posts: 12691
Credit: 1839095661
RAC: 3709

Keith Myers wrote: From what

Keith Myers wrote:

From what I Googled, it looks like the Clover Boot Manager is the goto utility along with the Samsung 950 Pro M.2 SSD.

Again thank you very much, I now have some work to do!!

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