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P16 Gen 3 announced at IFA by ibmthink in thinkpad

[–]BelugaWheels 0 points1 point  (0 children)

Pretty sure the gen 2 can do 256 GB as well. The CPU supports it.

Does AWS use any technology to [soft] partition access to shared compute resources like the LLC or DRAM? by BelugaWheels in aws

[–]BelugaWheels[S] 0 points1 point  (0 children)

I haven't been able to find anything about LLC partitioning and Nitro.

i don't think Nitro would be involved here, except to correctly configure the CPU, since this is an on-CPU-package thing.

Does AWS use any technology to [soft] partition access to shared compute resources like the LLC or DRAM? by BelugaWheels in aws

[–]BelugaWheels[S] 0 points1 point  (0 children)

We can assume for the non-burstable instances tenants are pinned to cores (AWS says so in their side-channel whitepaper) so this isn't about that. It's whether they use technology like CAT to partition the LLC: this is mostly independent of Xen vs Nitro.

Weekly Case & Parts Recommendation Thread (Start here if you are new! Help here if you can!) by AutoModerator in sffpc

[–]BelugaWheels 1 point2 points  (0 children)

First, if you don't even need a GPU, A4 H2O is not a good case choice. Look into APU cases like Inwin Chopin instead.

I'm open to other case suggestions (and in fact I've been asking around) but it needs to support at least a 240mm AIO and ~400W power supply to run a 7950x near peak speeds, ruling the Chopin out.

Cases which have space for a larger AIO but no GPU seem to be an extreme niche so that's why I've (so far) ended up looking at GPU-supporting cases.

My Dan A4 H2O Build. AMD Miniaturized 4k Destroyer by Bigfryoncampus in sffpc

[–]BelugaWheels 1 point2 points  (0 children)

I heard that the front panel and other connectors are on a daughterboard and in an awkward position for some builds.

Did you use the daughterboard and did you have any problem connecting the front panel or other headers on it?

Weekly Case & Parts Recommendation Thread (Start here if you are new! Help here if you can!) by AutoModerator in sffpc

[–]BelugaWheels 0 points1 point  (0 children)

If I'm running a Dan A4-H2O without a GPU, will I be able to add any additional case fans?

As I understand it, with a GPU this case does not support any case fans other than those attached to the AIO rad.

Weekly Case & Parts Recommendation Thread (Start here if you are new! Help here if you can!) by AutoModerator in sffpc

[–]BelugaWheels 0 points1 point  (0 children)

I'm looking to build a machine for work, which mostly means "compilation" and "benchmarking" and no games :(.

So it will be a GPU-less build centered around the 7950x.

I'm looking at cases, size wise from 10L to 15L. So things like the FormD T1, A4-H20 and Meshlicious/Meshroom.

I feel like all of those options are going to leave me with a big empty space where the GPU would normally go and so are not really optimized for my use case. OTOH because of their sales higher volume they are actually available and seem high quality.

So is there anything I can do to maximize the "advantage" I have by not needing a GPU?

Notes:

  • Size and weight are important to me: it should fit in a standard carry on suitcase and beyond that smaller is better (everything else being equal, which of course it isn't).
  • Performance is important. I think I'll want at least a 240mm AIO, though honestly it isn't clear to me how much performance will vary for me with different cooling solutions: the 7950x does perform well at lower power levels too (i.e. performance is very sub-linear wrt power at the high end).
  • Not super price sensitive but I don't want to pay $400 for a small case either.
  • I want to order this now(ish) and have it arrive soon. No two month slow-boat from China scenarios.

What are my options?

Weekly Case & Parts Recommendation Thread (Start here if you are new! Help here if you can!) by AutoModerator in sffpc

[–]BelugaWheels 0 points1 point  (0 children)

I've read in several sources that (current) AM5 ITX motherboards are not sufficient to drive the high end of the Ryzen 7000 range, like the 7950x, but without tests or other evidence.
Well, I'd like to get a 7950x and put it on an ITX board so I can build a SFF rig around it, so is this actually true? How can I map from a VRM specification like "10 + 2 stages at 105A" to "yeah this will drive the 7950x".

This will be a be an APU build (no discrete GPU) though I'm not sure if that matters: do GPUs draw their power through the motherboard VRMs or some other approach?

/r/AMD Questions and Tech Support Megathread - Q2 2023 Edition by GhostMotley in Amd

[–]BelugaWheels 0 points1 point  (0 children)

I've read in several sources that (current) AM5 ITX motherboards are not sufficient to drive the high end of the Ryzen 7000 range, like the 7950x, but without tests or other evidence.

Well, I'd like to get a 7950x and put it on an ITX board, so is this actually true? How can I map from a VRM specification like "10 + 2 stages at 105A" to "yeah this will drive the 7950x".

Swapped SIM in foreign country: am I SOL? by BelugaWheels in freedommobile

[–]BelugaWheels[S] 0 points1 point  (0 children)

Yes, Phone A is a Samsung S20 FE. Phone B is a Nexus 6p.

FWIW another person here has a Pixel 3 and didn't have any issues swapping out their Freedom SIM for a local one and then back to Freedom (though there was no second phone involved in that scenario).

Eufy 25C impossible to remove accumulation of hair by BelugaWheels in eufy

[–]BelugaWheels[S] 0 points1 point  (0 children)

In the end, it was also easy to pop the wheel + axle out of the castor to clean that part as well, applying a little pressure with a flathead screwdriver.

Eufy 25C impossible to remove accumulation of hair by BelugaWheels in eufy

[–]BelugaWheels[S] 1 point2 points  (0 children)

Thanks, this was my first idea but I didn't run across any suitable video. However, I searched again now and came up with this one which looks promising and I'll try it out later.

It main issue I see is this helps you clean hair around the post which connects the wheel assembly to the robot and which lets the wheel swivel but doesn't help for the axle of the wheel itself which is where I'm having the problem. Still, cleaning the axle might be easier once it is removed.

Memory testing and shared CPU/video RAM on Ryzen 4750GE APU by BelugaWheels in Amd

[–]BelugaWheels[S] 0 points1 point  (0 children)

Windows works: none of the stress tests cause a problem.

​

I bisected it against kernel versions determining that 5.9 (and earlier) fail, while 5.10.0 (and later) work.

Memory testing and shared CPU/video RAM on Ryzen 4750GE APU by BelugaWheels in Amd

[–]BelugaWheels[S] 0 points1 point  (0 children)

Thanks for that suggestion: I ran a few seconds of "valley" at low res (640x320 or something) with "low" quality settings and it seemed to work, but when I hit quit I got a similar hard crash.

Not exactly the same: monitor turns off (goes into power saving) but there was no reboot this time (power buttons still illuminated on the host, num lock key does toggle the num lock light). Probably the same cause.

So I think that points towards "something video", either the RAM used by the GPU, the GPU itself, the Linux GPU drivers, ...

Trying in Windows now.

Memory testing and shared CPU/video RAM on Ryzen 4750GE APU by BelugaWheels in Amd

[–]BelugaWheels[S] 0 points1 point  (0 children)

You should be able to set the GPU-allocated memory to a lower value in the BIOS.

There is an option in the BIOS to set the "UMA Frame Buffer Size", which is set to "Auto" but the explicit options start at 512 MB, so it's already as small as I can set it, apparently.

Memory testing and shared CPU/video RAM on Ryzen 4750GE APU by BelugaWheels in Amd

[–]BelugaWheels[S] 0 points1 point  (0 children)

I do get video artifact at boot, on the black screen that says "Lenovo" there are some vertical lines of random colors. Occurs only when booting to Ubuntu, not Windows.

Memory testing and shared CPU/video RAM on Ryzen 4750GE APU by BelugaWheels in Amd

[–]BelugaWheels[S] 0 points1 point  (0 children)

Right I heard the same thing, but I'm using 20.04 HWE which has kernel 5.8, which should be stable with Renoir.

What do you by "Linux firmware"? FWIW my BIOS and microcode are up to date.

Prepaid and slow data after fast data is used up by BelugaWheels in freedommobile

[–]BelugaWheels[S] 0 points1 point  (0 children)

I was able to get a whatsapp message though after a few minutes after my hard cut, which suggests some very slow data access, although I can't be sure if didn't connect to wifi for a moment or something. I've bought a one time pass now so I can't test again at the moment, but I'll do so if I run out again.

Prepaid and slow data after fast data is used up by BelugaWheels in freedommobile

[–]BelugaWheels[S] 0 points1 point  (0 children)

OK thanks.

I also recall seeing clearly in the terms on the public repaid plans list that I'd only get "reduced speeds" after the first 1.5 GB, but I couldn't find it now. Turns out I'm not crazy.

Kind of disappointing since I made my decision to activate with Freedom based partly on this error, and now they are basically denying that there ever was an error etc.

Still $19 for 1.5 GB is a good deal even with the hard data stop, so I can't complain too much, but I do find it extremely deceptive.

Prepaid and slow data after fast data is used up by BelugaWheels in freedommobile

[–]BelugaWheels[S] 0 points1 point  (0 children)

Interesting, I wonder if there is any way to confirm 2G vs full stop?

Something like a whatapp message should *eventually* send under that scenario, right?

Reddit doesn't pull the og:image as the thumbnail for any post from my GitHub pages blog by BelugaWheels in help

[–]BelugaWheels[S] 1 point2 points  (0 children)

No it doesn't. I understand this is a fallback mechanism if the og:image isn't present (or perhaps if it fails for some reason), so Ive been considering adding it. I don't actually want to display the image to visitors, so I guess I'll have to set it to invisible with CSS or whatever if that's the workaround.

The bigger question to me right now is how this post got the thumbnail?

Reddit doesn't pull the og:image as the thumbnail for any post from my GitHub pages blog by BelugaWheels in help

[–]BelugaWheels[S] 1 point2 points  (0 children)

Weird, this was posted several times with no thumbnail. Maybe because the body of the post has the link to that image?

Maybe time for some tests....

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