Replies: 2 comments 2 replies
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Sounds like you should give it a try and report back |
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I can tell you its not going to work great, max sustained transfer rate over USB 3.0 on this board settles at around 265mb per second, and may fluctuate up to 300mb per second, and the NVME port is actually borked, and will only give you a sustained transfer speed of around 800 to 900mb per second with a Samsung 980 Pro drive. Best solution is just drop a normal drive in it, and use USB 3 drives like the Steam Deck does SD Cards, it works great I have a magnetic external dock coming for external NVME caddies, you can just hot swap them like game cartridge's. Also my script reduces swap compression to the lightest one, as it reduces CPU overhead, pretty much put all this to bed like 6+ months ago, in the official Discord I have benchmarks in there you can see all the testing I did already. The USB 3 is quite limited, it really only gives you 2.5gb network speeds, it never hits the full "theoretical" limits, also, using a NVME to multi Sata adaptor doesn't work properly either, as you can't boot from it, and trying to use 2 x USB drives from the same hub is also a bit hit and miss, I have also tried proper industrial powered USB 3 hubs as they have 12 to 36v input on them to see if it was a power related thing, but it wasn't really the issue, its more of a USB addressing issue I think. Last thing I have to test is a USB-C to 5 port Sata adaptor, this might be a nice option for those wanting to pack in more storage on the cheap. |
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Yes, I suspected as much about the usb speeds. Its a shame because the optane drives make incredibly fast swap/cache drives far exceeding any nvme drives on the market, it what they were designed for. Anyway, I already have it set up and running well with a 1tb nvme drive in it. I am happy with it but you do notice slow downs when the swap is getting hammered. Thanks for all your work, i am using your scrips and and have 40cu unlock gpu 2000Mhz and cpu 3800mhz. All in a modified version of your 1st case. shrunk down a fair bit and 2 arctic p12 pro fans and an lop-300-12 with 14cfm of fans pulling cool air from outside and spaced back 15mm from the psu to reduce noise and gives a big improvement to psu cooling. During testing I had the power supply holding 340W at the wall for over an hour and was rock solid. |
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Very nice, cool remix, the REDUX though is a lot quieter, this first design was a little noisy with the hex so close to the fans. Pitty the Optain drives are that small, might be good for small games on them, and use them like game cartridges, Im designing a magnetic dock for this purpose, specifically for the Orico Sata/NVME USB-C caddies just drop it in and Steam will automount and add your games to the available list, it works really well, I currently do it with 500GB NMVE and Sata drives, I seen someone else do this with 2.5" SATA drives, but I like these slim caddys as they are easy to add Magnetic USB-C connectors to them, the same ones I use for these: https://www.printables.com/model/1017019-nexgen3d-meshtastic-atak-heltec-t114-case-v2 |
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I came across some really cheap new 16gB optane drives and it got me asking myself, how would the bc250 perform with a 16 gB optane drive in the m2 slot as swap drive and move the 1tB drive to a usb3 nvme case any ideas or opinions? I decided to ask google ai and it seems to say it's a good idea.
Google ai reponce
Using a 16GB Optane drive as swap and running the OS from a USB 3.0 NVMe drive on the AMD BC-250 architecture will give you excellent system responsiveness but slower game loading times.Because the BC-250 platform features a shared GPU, system memory gets starved quickly when running Linux distributions like Bazzite or CachyOS.The exact performance breakdown for this hardware configuration details why it is a viable setup, along with its inherent limitations:1. The Bottlenecks & Hardware RealitiesThe M.2 Slot Limitation: The official AMD BC250 Documentation notes that the single onboard M.2 slot is wired for PCIe 2.0 x2. This caps the absolute maximum bandwidth of your Optane drive to roughly 1 GB/s. You lose the massive sequential speeds of high-end Optane drives, but you keep the incredibly fast 4K random read/write low-latency that makes Optane famous.The USB Limitation: The BC-250's USB 3.0 ports operate at 5 Gbps, which caps your external NVMe OS drive to roughly 400–450 MB/s real-world sequential speeds.
2. How it Performs in Real LifeSystem Responsiveness (Excellent): Linux is highly efficient at handling swap space over low-latency block devices. Because you are dedicating the Optane drive to swap, the system will not stutter or lock up when the 16GB GDDR6 pool fills up during multitasking or heavy background tasks.OS Booting & App Launching (Acceptable): Operating at ~450 MB/s over USB 3.0 feels identical to running an OS on a traditional 2.5-inch SATA SSD. Booting and daily app usage will feel snappy, though not as instant as a native Gen 3 NVMe slot.
3. Gaming Performance (Mixed): Because gaming on the BC-250 requires the 16GB RAM to pull double duty as both VRAM and system memory, modern games will aggressively overflow into your Optane swap. The Optane drive will handle these asset swaps better than any other NAND flash drive on the market, preventing micro-stutters. However, the initial game load screens will feel noticeably slower because files must travel across the restricted USB 3.0 interface.
4. Critical Configuration for this SetupBecause your swap drive is restricted to ~1.0gb/s speeds, you must rely heavily on Linux's compressed swap cache (zswap) to optimize performance.Make sure your configuration in /etc/sysctl.conf prioritises RAM compression before hitting the physical Optane drive.
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