r/sffpc•
desolo

S4M: PC crashing when loading games with Dell 330W adapter

I'd like to move by build into the Skyreach 4 Mini, but I can't seem to get my system to load a 3D game. Everything's fine with normal PC usage, but games cause the Dell adapter to shut down right around the time the main menu loads.

CPU: AMD Ryzen 2700
Mobo: ASUS ROG B450i
Ram: 16GB 3000MHz
GPU: Zotac 1080 mini
M.2 SSD: x1 NVME, x1 SATA Power: HD Plex 400W DC-ATX + Dell 330W Adapter

The HDPlex and Dell adapter were tested by Joshua Sniffen (S4M creator), and were able to sustain loads of ~400W for a while on his test bench (i9+2080ti), so it shouldn't be due to those components. This system also works perfectly fine with the Corsair 600W PSU I've got.

Steps I've taken so far: (stable with Corsair PSU)

  1. Manually setting CPU core voltage to 1.23125.
  2. Manually setting SOC voltage to 1.1.
  3. Disable core boost.
  4. Limit GPU frames to 120 with Rivatuner.
  5. Powerlimit GPU to 90% with MSI Afterburner.

Is there a good way to determine if it's a motherboard voltage issue? Or maybe the GPU is spiking higher and HWInfo doesn't refresh quick enough?

I know the 400W AC-DC's already in pre-order so that should help, but I'd like to see if I can get it working with the Dell first.

Posted Feb 2, 2019, 11:37 PM UTC

35
The_Geoff•

I have a similar set up( r1700 and evga 1080sc) and also experience this issue. My current work around is to leave the cpu completely stock with the core boost turned off and I super undervolted my 1080 (60% in precisionXOC). No more shutdowns w/ these settings, and the performance seems unchanged, but I'm probably just gonna jump on the hdplex 400w brick and call it a day.

Did you buy your brick direct from Dell? Have seen people say that bricks from other sources can be hit or miss and don't actually output 330w. I got mine from eBay so it might be the cause of my issue as well but I decided to just wait for the hdplex brick.

2
desoloOP•

Did you buy your brick direct from Dell?

Yep, straight from Dell.

I'll see if I can undervolting the 1080 that much in Zotac's software, since this configuration wasn't working even with an i5 and another 1080. Hopefully the HDPlex 400W brick does solve all the problems. At least the Dell can be a backup for regular use.

1
[deleted]•

[deleted]

1
screwyou00•

Maybe your Dell brick has issues with power delivery during gaming loads? There's an old forum where Josh suspected some old HDPlex r1.4 units were failing due to power delivery when gaming, but maybe it's happening to your Dell brick instead.

He mentions non-gaming stress tests to not trip the HDPlex units, so maybe you could try a benchmark or stress test (that won't exceed the limits of the brick) to see if you also end up shutting down your Dell brick?

1
blubblop•

Were your specific parts tested by Josh, or just the type of component in general? There is a huge variance in the quality of Dell 330W adapters (even the official ones).

2
desoloOP•

I shipped the HDPlex and Dell to him for testing.

1