Dell Workstation Owners Club

[frankr2994]

I have my kids 5810 with a 685w PSU running a 2080 super with zero issue.

Ya I just did a quick look and the 3070 draws almost identical power to the 2080s I have. So I have no concern with the 685w PSU. I really would just like someone to verify they've stuck a 30 series in one of these machines. 5810,7810,7910. They have full UEFI so again I don't predict that to be an issue

 

[Retrorockit]

Maybe userbenchmark has some. It's a good place to see what other have been running.

 

[uco73]

No you don't. The T5810 officially supports up to 300W of graphics with the 685W PSU. A 3070 has a TDP of 220W.

Yes, but RTX 3070 has 1x12 pin or 2x8 pin. 685W PSU does not have two 8-pins cables, but the 825W PSU has two 8-pins.

 

[frankr2994]

Yes, but RTX 3070 has 1x12 pin or 2x8 pin. 685W PSU does not have two 8-pins cables, but the 825W PSU has two 8-pins.

PSU wattage has nothing to do with connectors available. A 7910 would come with a bigger power distribution board. This 3070 has 2 8 pins on it.

 

[Remeca]

Yes, but RTX 3070 has 1x12 pin or 2x8 pin. 685W PSU does not have two 8-pins cables, but the 825W PSU has two 8-pins.

My last 2 500W PSUs had 2x 8pin, why wouldn't a 685W?

 

[frankr2994]

My last 2 500W PSUs had 2x 8pin, why wouldn't a 685W?

The Dell precisions have had a separate power distribution board for awhile. The power supply can't change physical ports available in these machines.

 

[Retrorockit]

My last 2 500W PSUs had 2x 8pin, why wouldn't a 685W?

That's a simple question. But in the world of Dell the answer get's complicated. The label on the Del 685 PSU shows 5x 18A. 12V. Rails. so 216W each. So it's actually a 1000W PSU.
But Dell divides the rails up so a failure in any one component won't take down the rest of the computer. They're isolated. Also a problem will be a 216W problem and not a 1000W problem. So they may not be using the whole 216W on each rail. Maybe 150W each for isolation of various things. They aren't just trying to protect the computer, but fire protection for the building it's operating in.
I've seen a test where they were trying to destroy a bunch of cheap PSUs and they had a Dell Optiplex 305W in there. 2x18A 12V. rails. When intentionally overloaded made 410W before shutting down safely, and it was the only one in the test that still worked at the end, which annoyed hell out of everybody.

 

[frankr2994]

Well I can now confirm the 3070 works with a 685w PSU in a 5810. The additional 8 pin to dual 6+2 pin cable I had him get fixed him up. So for the card he's using 1 connection from that cable and 1 connection from the 10 pin cable I had him get before. Really the only difference is I had him try to use a 6 pin in 1 of the 8 pins slots on the card before. Apparently wouldn't work not seeing those additional grounds.

 

[JHAKK]

Will it work with anything other than 8GB?

16GB working here! RTX 3080 FE
A34 modded bios!

 

[lexluthermiester]

16GB working here! RTX 3080 FE
A34 modded bios!

Nice! I take it you have a ton of RAM in that system?

 

[TheinsanegamerN]

Somehow, my Dell t5810's Ubuntu server shit itself and can't find the boot. It can see the drive, but won't boot into it. Power outage mind you and I think it shut down unexpectedly and killed the image.

Besides UPS (I went through 2 of them in short period. Basically crap batteries), any suggestions?

I was thinking of going to windows server 2022 but I enjoyed telnet into Ubuntu server and just installing casaOS and or doing other little things with it. May just install proxmox and learn that instead.

Not for the server, but for the UPS, they now make LiPo4 batteries that can be swapped in place of lead acid. For those UPSes they're far more reliable then the lead acid and have a much larger usable capacity.

 

[lexluthermiester]

Not for the server, but for the UPS, they now make LiPo4 batteries that can be swapped in place of lead acid. For those UPSes they're far more reliable then the lead acid and have a much larger usable capacity.

I'm thinking strongly about swapping over.

EDIT;
They do make them for my UPS,

Mighty Max 12V 5AH Lithium Battery Replaces APC Back-UPS BE ES350, BE ES500 747104401332 | eBay

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[Shrek]

I am really interested in how lithium batteries perform in place of lead acid but suspect that power may be an issue, and would think about derating.


Look at these

• Dakota Lithium 12v 7ah Lifepo4 Battery | Dakota Lithium Batteries

10A max continuous, so maybe 100W; that is a lot of derating.

• Dakota Lithium 12v 10ah Battery | Dakota Lithium Batteries

20A max continuous, so maybe 200W and perhaps derating to half load.

 

[frankr2994]

I am really interested in how lithium batteries perform in place of lead acid but suspect that power may be an issue, and would think about derating.


Look at these

• Dakota Lithium 12v 7ah Lifepo4 Battery | Dakota Lithium Batteries

10A max continuous, so maybe 100W; that is a lot of derating.

• Dakota Lithium 12v 10ah Battery | Dakota Lithium Batteries

20A max continuous, so maybe 200W and perhaps derating to half load.

Charge voltages and rates are typically different between lead acid and lithium

 

[TheinsanegamerN]

I am really interested in how lithium batteries perform in place of lead acid but suspect that power may be an issue, and would think about derating.


Look at these

• Dakota Lithium 12v 7ah Lifepo4 Battery | Dakota Lithium Batteries

10A max continuous, so maybe 100W; that is a lot of derating.

• Dakota Lithium 12v 10ah Battery | Dakota Lithium Batteries

20A max continuous, so maybe 200W and perhaps derating to half load.

20A continuous per battery. Depends on your UPS. Mine has 4, so that would combine to a total of 800w output. If you have a small UPS with, say, a 1000w rating, odds are it will have 5 batteries in it.

It also depends on the model, many UPSes of higher wattage use 24 or 48 volt batteries, not 12v.

Charge voltages and rates are typically different between lead acid and lithium

These types of LiPo4 batteries are designed to be drop in replacements, with on board BMS to handle charging. The only ill effect would be getting a 90% charge instead of 100%, which will extend the battery lifecycle and still provide greater capacity.

 

[Shrek]

I'd argue that 90% charging was a virtue, as it greatly extends life (as you point out).

 

[lexluthermiester]

Charge voltages and rates are typically different between lead acid and lithium

That isn't something to worry about. The batteries are engineered as a drop-in replacement.

 

[JHAKK]

Nice! I take it you have a ton of RAM in that system?

256GB ECC =)

 

[Oldschool297]

I guess the T3500 dosen't have a motherboard temp sensor. I can't see the temp in any program?

 

[Magic Cube]

I guess the T3500 dosen't have a motherboard temp sensor. I can't see the temp in any program?

I don't know a lot about Dell's. But it is possible that there is temperature sensor on board(it is useful sensor), but any third party monitoring app you tried, just don't have support for it. Similar to my Fujitsu which uses Fujitsu's/Kontron's Teutates which is not supported anything other than Fujitsu's Silent fan application.

If you have somekind hardware monitoring page in bios and it has motherboard sensor reading->There is chip which is not supported by any third party app you tried.

 

[uco73]

I guess the T3500 dosen't have a motherboard temp sensor. I can't see the temp in any program?

As far as I know, Dell has a specific bios, which does not allow applications outside the Dell whitelist to read any information about the computer (motherboard, processor, ram, etc.). Since I have a Dell computer, no program sees the ECC reg. memory or any information about the system disk (if the bootable disk is SSD or NVME) other than the name and capacity. You don't need to worry if the computer is working normally.

 

[Oldschool297]

I can see all info and temps in many programs but not for the motherboard.

 

[frankr2994]

I can see all info and temps in many programs but not for the motherboard.

Define motherboard temp? What are you wanting to monitor on it?
If hwinfo isn't showing you something then it doesn't have it. I've never not gotten sensor readings from a Dell with 3rd party software

 

[Oldschool297]

How warm the motherboard is. Does Dell have any software for it?

 

[frankr2994]

How warm the motherboard is. Does Dell have any software for it?

I've never seen any PC give a "motherboard" temp. There's a few components on the board one may want to monitor but different parts of the board will be at vastly different temperatures. Dell isn't good at monitoring stuff like vrm temp so I wouldn't count on there being anything extra