research I did in 2018 before my build revealed not filling all RAM slots can starve the system of RAM; so I filled my slots in my 2018 build I am still using…8 years ago, maybe things have changed in this regard?
hmmmm, I went for a quick peruse and found info to the contrary…maybe has nothing to do with it 
Yes, as far as I know, for DDR5 RAM 2x is recommended over 4x.
The whole DD5/mainboard/Intel285 combo is quite new and technically demanding, so I expect further fixes by Gigabyte bios updates and just relax until then. As long as everything except stem separation runs as fast and fine as it does so far, I will just enjoy it.
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Just to throw a spanner in the works, on my current PC with a Gigibyte X870E Aorus Eite mainboard I use four 16GB DDR5-6000 modules despite advice I’ve seen elsewhere, and I’ve soak-tested this for 2 days using memtest86+, which I still believe is the best way to thoroughly test RAM. I haven’t experienced a single crash.
Luckily I bought the DDR5’s last June … $$$$$
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I have 4 sticks of 16GB Corsair DDR4 in my 2018 AsRock i7
AI summary:
- Builders and overclockers consistently report that DDR5 is “known to run less stable with 4 sticks … best performance is achieved with 2 sticks,” and that 4‑DIMM setups often require dropping clocks well below XMP.
It doesn’t matter anyway for me now, because I surely won’t replace my well and fast running XMP speed RAM (for literally everything except stem separation) at current prices
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That just shows how wrong so-called “AI” can be. It’s simply a superficial summary of “stuff I found on the internet”.
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I asked two computertech experts and they told me the same.
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… which shows how quickly misinformation can spread.
Why on earth would mainboard manufacturers go to the expense of four RAM sockets instead of two if the world knew it would not be stable if all four sockets were populated? Do datacenters only use two RAM modules across all their servers? I could go on … but this is going seriously off-topic.
The bottom line is SpectraLayers Song Unmix (high) is unuseable on YOUR PC.
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@MrSoundman I’m glad for you, that your system works with Spectralayers 12 and thank you for your effort to help!
The bottom line of what the computer experts said was not that filled 4 slots ran unstable per se. They just said that the 4x setup with the relatively new Intel 285K mainboards normally requires lower DDR5 clock speeds to work stable, and would force clock speed significantly below XMP. That’s all. My RAM works at full XMP speed with everything on my PC except stem separation. So it’s more probable to be a complex hardware-software relation issue than a monocausal RAM problem.
Frankly, I wouldn’t want to change my present setup just for stem separation, as long as it is running as fast and smooth as it does now with everything else. For the time being I just render stems on my Notebook and then do a network export to my PC, to use and edit the results in Spectralayers 12 or RipX there. As long as nobody really knows what’s causing the issue, this looks like the best solution to me.
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In the BIOS, Increasing the Load Line calibration from 3 to 5 can give you a stiffer voltage, so the intense draw of SL12 unmix doesn’t cause enough voltage droop for the system to shut down. Might try increasing your VRM voltage too
Thanks for the BIOS hints @Graveley
Meanwhile I got Song Master Pro and RipX stem separation running again after disabling high bandwidth and low latency tuning settings in the BIOS, so I’m fine now. Spectralayers still produces blackscreens in CPU mode and it simply closes down in other modes. It’s the only app I need my notebook for, when rendering high quality stems.
But frankly, while Spectralayers is useful for other editing jobs, it’s quite slow (compared to other stem separation tools) with high quality stem separation and does NOT stand head and shoulders in quality above the results of other tools. Especially Songmaster Pro (offline) and Moises (online) offer comparable results significantly faster, and RIPx displays the additional midi information I sometimes use for transcribing.
So for stem separation, I rarely use Spectralayers Pro 12 any longer: it’s just not worth the additional rendering time for me, not even on my fast notebook.
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