this post was submitted on 14 Dec 2025
847 points (98.7% liked)
Technology
77090 readers
3674 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related news or articles.
- Be excellent to each other!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, this includes using AI responses and summaries. To ask if your bot can be added please contact a mod.
- Check for duplicates before posting, duplicates may be removed
- Accounts 7 days and younger will have their posts automatically removed.
Approved Bots
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Does require you to have the PCIe lanes for it, BIOS support for booting to PCIe (which Intel 6th gen core CPUs were the first to support. 4th gen never did but some had m.2 slots and NVMe support for secondary drives and the 5th gen X99s had some receive BIOS updates to support but that's its own can of worms) and both Intel and AMD have historically been pretty bad about being stingy about PCIe lane availability
Plus to run more than a single NVMe on a single slot your motherboard either needs to support PCIe bifurcation which is almost exclusively an enterprise feature or they need to have the right lane configuration available to support that x16 slot handing out 4x4 lanes (or 2x8/2x4 for dual NVMe)
Y'know what, I honestly haven't looked at what the PCIe lane layout is like on newer chipsets. Maybe it's gotten better since I last really paid attention like 5+ years ago. I remember in early-mid AM4 there was a lot of grumbling about how there's only 20 PCIe 3 lanes followed by early PCIe 4 platforms that would give only 16-20 lanes with another 8 or so PCI 3 lanes. I also didn't really pay much attention to AMD before AM4 given how far behind Intel they were. But I could be entirely out of date now that I think about it
Phoenix2 APUs like the R3 8300G and R5 8500G are the worst offenders in the 'cutting PCIe lanes' department.
The R5 8500G only has 14 lanes, for example. The FX-8350 and 8370 from a decade earlier, would've had 32 lanes available on the 990FX chipset, and half that on the 990X and 970 chipsets per contemporary reviews from when those CPUs were new, but they were all PCIe 2 as AM3+ was a PCIe 2 platform.
This is the specific review I'm going off of for this. FX-8350 review
Per that review, 990FX would've supported 2 x16 or 4 x8 slots, while 990X would've supported 2 x8 slots, and 970 would've only supported a single x16 slot, but of course configs varied by the board makers, and there would've been nothing stopping someone from making a 990FX board with a single x16 slot, three x4 slots, and two x2 slots, for example, nor a 990X board with a single x16 slot or a 970 board with a single x8 slot and two x4 slots.