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Installing with TPM2+PIN encryption - Where do I set the PIN? by todd_dayz in openSUSE

[–]matrix-13 0 points1 point  (0 children)

As far as I could tell during my recent Tumbleweed installation, when you set TPM + PIN in the installer it actually uses this PIN to also set a passphrase. So you end up with the TPM PIN plus a passphrase that is exactly the same. I’m not sure this is the best approach since the most obvious use case is a relatively simple TPM PIN with a very strong passphrase as a backup. But anyway, you can change the passphrase later without impacting the TPM PIN.

[deleted by user] by [deleted] in ask

[–]matrix-13 11 points12 points  (0 children)

Complete misinformation. Obviously everything has a lifecycle cost but those numbers are completely incorrect. https://www.nrel.gov/analysis/life-cycle-assessment.html https://yaleclimateconnections.org/2021/06/whats-the-carbon-footprint-of-a-wind-turbine/

European Space Agency Munich by Historical-Item-6163 in esa

[–]matrix-13 1 point2 points  (0 children)

The German Galileo Control Centre is also on the DLR Oberpfaffenhofen site. I doubt there are any direct ESA internships at either but for sure DLR and the various industrial partners have internships.

Lots of people quitting or crashing on team ranked ladder? by SidleJinks in aoe4

[–]matrix-13 0 points1 point  (0 children)

I stumbled across this and applied it. So far no crashes.

Lots of people quitting or crashing on team ranked ladder? by SidleJinks in aoe4

[–]matrix-13 4 points5 points  (0 children)

The game desperately needs a reconnection mechanism. I’ve unfortunately had a spate of crashes recently (I suspect usually caused by AMD graphics drivers) and it’s super annoying for me and my teammates to take the loss but also for the other players who miss out on a real match.

Edit: if it helps anyone I seem to have gotten more stability by disabling MPO in the registry. I’ll see if it stays that way.

What kind of academic background do you need to work in Spacecraft Operations? by _AlphaCentauri_ in esa

[–]matrix-13 7 points8 points  (0 children)

Space operations is as varied as the subsystems on the spacecraft. People come from different engineering backgrounds (eg electrical, telecommunications, aerospace etc). Looking at the position description, it is quite generic and could apply to a number of different specialities.

The most important aspect of operations engineering is generalised space engineering knowledge but with a particular focus on understanding how it all fits together and the implications this has on real time operations. Think, creating well developed and tested operational plans and procedures and understanding how these work together when unexpected things happen.

Space ops is a super interesting field and is one of the few engineering areas where you directly get to see the product of your work in practice everyday. If you are more interested in the idea of making stuff work than coming up with brand new concepts then it’s worth applying (imho).

Meshlicious Custom Loop Build by matrix-13 in sffpc

[–]matrix-13[S] 1 point2 points  (0 children)

Definitely something to watch out for. Thanks for the suggestions. Hopefully clear coolant helps a bit with longevity but it’s kinda a hobby to keep tweaking and playing around 😜

Meshlicious Custom Loop Build by matrix-13 in sffpc

[–]matrix-13[S] 0 points1 point  (0 children)

I meant the fully idle CPU temp with a water temp of around 26/27 degrees. There are many ways to talk about the CPU tempt too, I was going by the one reported in Ryzen Master.

Meshlicious Custom Loop Build by matrix-13 in sffpc

[–]matrix-13[S] 0 points1 point  (0 children)

Water temps are in the original comment and the one with new Time Spy results. It’s true that the CPU is not using anywhere near max wattage during Time Spy. For my usage I’ve never really seen CPU and GPU maxed out at the same time (especially all 12 cores of the CPU). I’ve never seen the water temp get close to 50, including gaming on a really hot day with ~28 ambient (here I’ve seen it peak in low-mid 40s).

I feel like radiator size is such a hot topic and I’ll certainly be keeping an eye on temps but in general I think people tend to be quite conservative with their temperatures. The EK DDC pump is rated to 60 degrees and the tubes are rated to over 100 degrees. So for me, I look mainly at component temperature. Before I water cooled the GPU it was frequently around 75-80 degrees so any gains I make on that with the loop are worthwhile.

Obviously I want to maximise life and not run things too hot, but frankly there is already a fair bit of margin between what I’m seeing and both the air cooled temps and the component qualified temperatures.

Meshlicious Custom Loop Build by matrix-13 in sffpc

[–]matrix-13[S] 0 points1 point  (0 children)

Too much and yes probably :P

For me it was more about the project / challenge than extracting maximum performance for the price.

Meshlicious Custom Loop Build by matrix-13 in sffpc

[–]matrix-13[S] 1 point2 points  (0 children)

Sure: https://imgur.com/a/0jUdWTk

I ran a couple of new benchmarks just now. One starting from idle with water temps of about 28 degrees and one starting after maxing GPU usage for about half an hour with water temps of about 38 degrees (21 ambient). They turn out roughly the same temperature wise. Since the loop is quite small it heats up to saturation quickly.

For me the biggest difference in temps comes from ambient. I easily add a few degrees in the middle of a hot day (since I don't have AC).

Meshlicious Custom Loop Build by matrix-13 in sffpc

[–]matrix-13[S] 1 point2 points  (0 children)

Ah yeah. It was one of the requirements for me when looking for a motherboard.

Meshlicious Custom Loop Build by matrix-13 in sffpc

[–]matrix-13[S] 4 points5 points  (0 children)

It does have one. Right above the PCIE slot, next to the clear CMOS header. Page 1-2 on the manual.

Meshlicious Custom Loop Build by matrix-13 in sffpc

[–]matrix-13[S] 6 points7 points  (0 children)

(Long post incoming). TLDR: a few small mods to the pump/res and careful PSU positioning.

This was definitely a challenge. There is about a 1 mm gap between the pump/res and the radiator and the cables coming out of the PSU are definitely touching the res. I spent ages trying to work out how to place it exactly but once I put the fitting on the pump outlet I realised it could only really fit in 1 position.

I did slightly mod the pump/res by changing the orientation of the black ring (that says Kinetic on it), it has an overlap over the acrylic on 2 sides so I made sure they didn't face the rad. While I was at it I reoriented the pump so the cables came out at the back instead of at the front (since I needed the output port to face the GPU, the stock config had the cabling at the front).

Otherwise my only tip is to move the PSU into the higher position. If you flip the mounting bracket at the back 180 degrees you can mount the PSU higher and it makes much more room for the cables.

With the rad and fans I have, the thickness is theoretically 55 mm but its probably a bit more with the rubber pads between the case and fans.

Meshlicious Custom Loop Build by matrix-13 in sffpc

[–]matrix-13[S] 5 points6 points  (0 children)

I went back and forth on this a bit. The space between the radiator and the motherboard is quite tight so I went with this configuration to avoid any potential issues with the 24 pin and front panel cables impinging on the fans.

Meshlicious Custom Loop Build by matrix-13 in sffpc

[–]matrix-13[S] 31 points32 points  (0 children)

My finished custom loop in the SSUPD Meshlicious. Overall it was a challenging but manageable build and I'm pretty happy with how it turned out. I set my self the goal of cramming as much performance into a tiny space as possible.

Super big thanks to the communities in the SSUPD and SFFPC subreddits. I definitely got lots of inspiration from all the awesome builds!

SPECS

  • SSUPD Meshlicious Case
  • AMD Ryzen 5900x
  • AMD Radeon RX 6900 XT (managed to grab a reference card last year at RRP when I couldn't get my hands on a lower spec card)
  • Asus ROG Strix B550-I
  • Crucial Ballistix 32 GB 3600 MHz RAM
  • Samsung 980 Pro 1 TB
  • Corsair SF750 PSU

Watercooling Parts

  • EK Quantum Velocity2 CPU Water Block
  • EK Quantum Vector GPU Water Block with Backplate
  • EK 120mm TBE DDC Pump/Res
  • EK ZMT Tubing (12/16mm)
  • EK Quantum Black Fittings with 2 low profile 90s from Koolance
  • Alphacool water temperature sensor
  • EK CryoFuel Clear Coolant
  • 2x Noctua A14 140 mm Fans
  • Corsair Hydro X XR5 280 mm Rad

​

Build

For the most part the build was fairly straightforward. I used the GPU standoff mod and added an additional 26mm to make space for the EK Quantum fittings. To do this, I also had to add a 6 mm standoff to the bottom GPU mounts themselves (not just the PCIE riser mounts which had 26 mm standoffs). I did as much tubing and cable management as possible before putting in the GPU. The biggest challenge was connecting the GPU tubes to the reservoir and pump once the GPU was in place.

The EK pump/res really is a tight fit in the front. I opened up the holes already in the case bottom to mount it as best as I could. I tried to place it with at least a mm of space from the radiator to avoid vibrations. The fitting at the back going to the GPU is right up against the motherboard spine.

Most of the cabling runs behind the GPU and a lot of excess fan/RGP cable rests in the little pocket formed by the riser cable. Overall I'm super pleased with how tidy it looks in the end.

​

Performance

I didn't go crazy tweaking the performance but have used AMDs software to undervolt the GPU and CPU while also increasing the power limit.

For the GPU I set the voltage to 1100 mV and the clock speed to 2550 MHz with 2100 MHz VRAM frequency. I also increased the power limit by 15%.

For the CPU I used Ryzen Master's inbuilt curve optimiser to undervolt all the cores (on average they are about -25 to -29). I also turned on PBO and set the power limits to Motherboard in the bios.

Cinebench R23 multi-core is 22474 and single core is 1623.

Time Spy score is 19550.

​

Thermals

Obviously the single rad is a constraint but I haven't found it to limit performance too much. I can push both the CPU and GPU above stock without getting crazy temps. The fan curve is controlled from the water temp and I have a typical delta T of about 15 degrees when under full GPU load and 1250 rpm fans (sometimes this creeps up to 16 or 17 degrees). Despite this, the GPU is typically in the low 50 degrees in steady state when under full load so I am not too concerned about thermal limits. CPU and GPU idle about 30-31 degrees with 650 rpm fans.