Posted March 13, 2022 Hello dear people, I have a question. We've purchased a RM850 model for an ASUS Rog Strix 3080. Given that the GPU can go up to 450w, we thought that a high quality 850w PSU would do us good. Sadly, the PSU only came with two PCI-e cables whereas Corsair's website claims this specific PSU has there PCI-e cables. https://www.corsair.com/us/en/Categories/Products/Power-Supply-Units/Power-Supply-Units-Advanced/RM-Series™-80-PLUS-Gold-Power-Supplies/p/CP-9020196-NA#tab-overview My question is, how safe it is to use only two PCI-e cables with this 3x8 pin GPU? Should we just return the PSU and find another model? How come a 850W PSU does not include 3 pcie connectors? What is even the point of all those power if it does not contain enough PCI-e connectors? Apparently some people say that "new" revisions can be shipped with 2 cables but this makes no sense, at all. Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted March 13, 2022 it should have come with 3 unless you got the 2021 model that has the triangle grille. Spoiler @jonnyGURUInterestingly it seems like pre 2021 models come with 2 EPS cables, and 3 PCIE cables, but 2021 comes with 3 EPS and 2 PCIE cables. Any reason for the swap that you know of? I'm not actually trying to be as grumpy as it seems. I will find your mentions of Ikea or Gnome and I will /s post. Project Hot Box CPU 13900k, Motherboard Gigabyte Aorus Elite AX, RAM CORSAIR Vengeance 4x16gb 5200 MHZ, GPU Zotac RTX 4090 Trinity OC, Case Fractal Pop Air XL, Storage Sabrent Rocket Q4 2tb, CORSAIR Force Series MP510 1920GB NVMe, CORSAIR FORCE Series MP510 960GB NVMe, PSU CORSAIR HX1000i, Cooling Corsair XC8 CPU block, Bykski GPU block, 360mm and 280mm radiator, Displays Odyssey G9, LG 34UC98-W 34-Inch,Keyboard Mountain Everest Max, Mouse Mountain Makalu 67, Sound AT2035, Massdrop 6xx headphones, Go XLR Oppbevaring CPU i9-9900k, Motherboard, ASUS Rog Maximus Code XI, RAM, 48GB Corsair Vengeance LPX 32GB 3200 mhz (2x16)+(2x8) GPUs Asus ROG Strix 2070 8gb, PNY 1080, Nvidia 1080, Case Mining Frame, 2x Storage Samsung 860 Evo 500 GB, PSU Corsair RM1000x and RM850x, Cooling Asus Rog Ryuo 240 with Noctua NF-12 fans Why is the 5800x so hot? Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted March 13, 2022 Are you sure you didn't get the 2021 version of the PSU instead of the 2018 version? If it looks stupid with triangular holes for the fan grill, it's the 2021 version. That one has the idiotic configuration of 3 CPU power cables and 2 PCIe cables, while the older version has 2 CPU power cables and 3 PCIe cables. If you only need one or two CPU power cables, you can get a PCIe power cable, just make sure it's compatible with Corsair type 3 or type 4. :) Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted March 13, 2022 30 minutes ago, viceice said: Sadly, the PSU only came with two PCI-e cables whereas Corsair's website claims this specific PSU has there PCI-e cables. That's 2019 revision, you've probably got 2021 one which comes with two PCIe cables because nVidia told Corsair that RTX3xxx GPUs would use EPS cables for the adapter to 12-pin. Speaking of your question, it is safe, because in contrast with most other PSUs, Corsair uses 16AWG wires for their cables, they can withstand this load, if it's not mining without undervolting anyway. Tag or quote me so i see your reply Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted March 13, 2022 8 minutes ago, IkeaGnome said: it should have come with 3 unless you got the 2021 model that has the triangle grille. Reveal hidden contents @jonnyGURUInterestingly it seems like pre 2021 models come with 2 EPS cables, and 3 PCIE cables, but 2021 comes with 3 EPS and 2 PCIE cables. Any reason for the swap that you know of? Right. "2018" has two EPS12V and three PCIe. "2021" has three EPS12V and two PCIe. Nvidia wanted to avoid customers using pigtails with the FE adapter, so knowing that EPS12V cables are one to one, they said they were going to supply an adapter that adapted two EPS12V to one FE 12-pin. Then, at the last minute, they changed it to use PCIe instead. 2 hours ago, viceice said: My question is, how safe it is to use only two PCI-e cables with this 3x8 pin GPU? Should we just return the PSU and find another model? How come a 850W PSU does not include 3 pcie connectors? What is even the point of all those power if it does not contain enough PCI-e connectors? Apparently some people say that "new" revisions can be shipped with 2 cables but this makes no sense, at all. The PCIe cables use 16g wire and HCS terminals. Using pig-tail connectors should pose absolutely no issue. Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted March 13, 2022 2 minutes ago, jonnyGURU said: Then, at the last minute, they changed it to use PCIe instead We were so close to things being that much more simple. I'm not actually trying to be as grumpy as it seems. I will find your mentions of Ikea or Gnome and I will /s post. Project Hot Box CPU 13900k, Motherboard Gigabyte Aorus Elite AX, RAM CORSAIR Vengeance 4x16gb 5200 MHZ, GPU Zotac RTX 4090 Trinity OC, Case Fractal Pop Air XL, Storage Sabrent Rocket Q4 2tb, CORSAIR Force Series MP510 1920GB NVMe, CORSAIR FORCE Series MP510 960GB NVMe, PSU CORSAIR HX1000i, Cooling Corsair XC8 CPU block, Bykski GPU block, 360mm and 280mm radiator, Displays Odyssey G9, LG 34UC98-W 34-Inch,Keyboard Mountain Everest Max, Mouse Mountain Makalu 67, Sound AT2035, Massdrop 6xx headphones, Go XLR Oppbevaring CPU i9-9900k, Motherboard, ASUS Rog Maximus Code XI, RAM, 48GB Corsair Vengeance LPX 32GB 3200 mhz (2x16)+(2x8) GPUs Asus ROG Strix 2070 8gb, PNY 1080, Nvidia 1080, Case Mining Frame, 2x Storage Samsung 860 Evo 500 GB, PSU Corsair RM1000x and RM850x, Cooling Asus Rog Ryuo 240 with Noctua NF-12 fans Why is the 5800x so hot? Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted March 14, 2022 Author thank you, we've observed pin2+pin3 load in games and total value hovers between 160-200w. i think thats perfectly fine for these 16awg cables! Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
.thumb.jpg.e4dafad042de9d17285599f16e47b236.jpg)
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now