Ok, so the system comes with a 460 watt power supply. Not enough to run anything more than the single GPU that comes with the system. The guy in the chat support told me it was fine and to put the 2nd card in!!!
Do these use standard ATX power supplies? I've read stories about Dell's power supplies being proprietary and motherboard pins being reversed compared to normal ATX.
Dell wanted $220+ for a 850watt upgrade, but of course refused to tell me that anything other than that power supply would work. They are out of their minds, so I just want to make sure if I buy a reasonably priced Standard ATX PSU that it will work ok on my system. Thanks!
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Well according to Dell, the proper PSU from Dell is =
N1WJD 850w, 240v, APFC, EPA, E-Star, Delta
48Y6D 850w, 240v, APFC, EPA, E-Star, Huntkey
Dell selling it for $250, Ebay has it with cables for around 100. everything on the alienware site, for the Aurora R5, says this is a good switch from the D460AM-03. Dell used the same PSU's between the R5's and the 5675's.
20 pin 70 percent efficient ATX is not working. 80 percent Efficient EPS12V 2.91 is required. ATX is a standard from 1990. No idea on this new model if they use proprietary power connections. Visually it does not appear to be anything other than standard 24 pin / 4 pin EPS12v 2.91 (This system DOES NOT have 2 video slots.)
Power supplies are not a single rail with a single spec of Watts.
Units that have AT LEAST 25 AMPS on each of the 3.3v and 5v rails as well as 150W combined on those rails are a minimum.
This is why an EVGA 750B1 works fine in most all dells that it physically fits but the B2 and BQ models of the same 750w do not.
EVGA SuperNOVA 750 B1 110-B1-0750-VR
Thanks for the information. My board looks identical but does have the 2 video slots unlike the one pictured.
I bought this m.newegg.com/.../N82E16817151188
It on shows 20 amps not 25 like you said. However, surely it's good enough yes? Just sharing to confirm because I already bought it. Otherwise, I'll look at what you recommend.
It may be ok but just based on the SPEC for the Combined on 3.3v/5v rails there is a problem. Even on the 460W units the COMBINED 3.3v and 5v rating is 142W. And the 5v says 25A
This is why I say ATX is not ok and EPS12v 2.9 is required.
Power supplies are NOT a single rating of WATTS and only 1 Rail.
The EPS12v 2.92 spec specifically INCREASES the watts on the 3.3v 5v railset. The problem with not meeting the spec is that it may not work. They Also DO NOT SAY EPS12v or the version of ATX-12v
Only ATX12v version 2.4 comes close. What do you think will happen if it tries to draw more than 100W from the 3.3v /5v rails?
20 A at 5v = 100W You do not get to draw the max on all rails all the time hense the COMBINED Rating.
The Dell 875W unit has 225W combined on the 3.3v and 5v Rails.
With 32A on the 5V and 30A on the 3.3v
EVEN the 305W units have 150W combined on the 3.3v/5v Rails.
22A on the 5v rails.
Very good info. Thanks for the explanations wish I would have seen your response prior to ordering that seasonic. I'm confused by how good a reputation seasonic has, but yet the numbers on the labels clearly favor the Dell power supplies.
I don't know that the seasonic won't work. It might be fine. But if you have issues with freezing and lockups and reboots or worse it doesn't work at all then I would say the other rails maximum combined power is the issue. The EVGA Super Nova 750B1 has been used and tested successfully in many dells including XPS 8500 and XPS 8700 and works fine in my XPS 8900.
This is also why
CORSAIR CS750M works CORSAIR CX750 DOES NOT
This is what the NEX 750B1 looks like installed in an XPS 8500
And if it's ATX 2.4/EPS12V 2.92 should I go for that over the 2.91, or should i go for the 2.92? I did notice this on best buy.com, it's a CX650M but it has EPS12V 2.92 listed, in this case would a CS be better? www.bestbuy.com/.../5845214.p
Also i scoured amazon and found this, the 2017 revision to the CX750, and it includes support for EPS12V 2.92, I know it's not modular, nor semi modular, but that's okay for a $20-25 dollar trade off, leaving room to get more ram, right? www.amazon.com/.../ref=dp_ob_title_ce
So would the CS650M work?
You haven't really said what you are trying to do. Do you need 850W?
You said you bought a new 5675, and were thinking of adding a second graphics card.
Which card? What is in there now?
I'll be candid, I am not a fan of the current crop of Corsair PSUs and you have to look closely at each model to see what is really inside. Keep in mind that Corsair does not build power supplies, they contract out to have them built by different companies and there is a great amount of variability between the different models.
My opinion is that if you really need an 850W PSU, you should look at a top-tier unit like a Seasonic Prime Titanium or an EVGA P2 ( built by Superflower) or the Gold equivalents like the Prime Gold or EVGA Supernova G3.
If you really need that much power you'll want it not only to be efficient ( which means less heat and less electricity cost) you want it quiet and stable.
But back to the first question, what graphics card are you adding that needs 850 watts ?