Compatibility and stability of the system
Compatibility and stability of the system
Hello, I’d like to talk with you about a few points in this article and value your insights.
1. PSU and GPU compatibility: I own a Corsair RM850e (2023 model, includes a 12vhpwr cable) that’s a fully modular power supply. It’s connected to my MSI RTX 3090 Suprim X. The setup appears functional, but I’m curious about stability and safety from a technical standpoint. The RM850e has only 4 CPU/PCIe ports (2 each), paired with two EPS cables that match my Z790-H motherboard, plus one 6+2 PCIe and another 6+2 with a pig-tail connector. My GPU draws 420W. I’ve read some advice suggesting avoiding pig-tail connectors on high-power cards. My concern is whether this configuration could pose a fire risk or if it’s safe enough. Should I proceed as-is, or should I consider undervolting the GPU?
2. DDR5 RAM compatibility: I assembled the system and ran bench tests successfully. During a BIOS update from version 1202 to 1501 on my Asus ROG Strix Z790-H, the system failed to display the DRAM orange light. I tried other BIOS versions, sometimes it worked briefly but not consistently. I explored Reddit discussions where users shared that excessive RGB lighting can interfere with booting without XMP enabled. Following their advice—removing one RAM stick, rebooting, updating BIOS, enabling XMP, then installing the other stick—I managed to get the system running smoothly. The RAM I’m using is G.Skill Trident Z5 RGB 32 (16x2, DDR5 6000).
I appreciate your expert opinions on these matters.
Take care, we don’t claim expertise, just share our thoughts. It seems safe. It might be a bit shaky though—could cause instability? Possibly. If you’re thinking about swapping an 8-pin CPU pin for a PCI 8-pin, it really depends on your specific CPU model. One 8-pin should handle around 400W, while your 14700k turbos can go up to 250W, so it would fit nicely. Your GPU could draw nearly double that, which means you’d only need one. Since your GPU might be pulling more power than expected, I’d suggest going with a setup of one CPU pin and three GPU pins unless you’re comfortable with the risk. DDR5 is still emerging, and some issues remain to resolve. That’s why I often stick to non-RGB dimming systems.
It's just people being overly cautious. The 12VHWPR included with the PSU only provides two connections, making it functionally similar to using two PCIe pigtails—something I experienced with my 4090 before newer cables were introduced. This matters mainly if you're using a budget PSU that might not handle the wiring safely, but it's not an issue with a properly rated Tier A PSU.