epyc

  1. P

    ConnectX-3 card not detected in Asrock EPYCD8-2T

    I picked up a nearly-new Epyc motherboard through the forums a few days ago, and for some reason it's not picking up my ConnectX-3 card at all (single port, 10GbE, I believe MCX311A-XCAT). I've tried multiple slots, and it's neither included in the IPMI inventory nor in lspci output, and there's...
  2. S

    EU FS: 128GB (4 x 32GB) DDR4 RDIMM, ASRock EPYCD8-2T & Noctua NH-U14S TR4-SP3 (UK) - All sold

    Edit 2020-11-02: All items have been sold - thanks for looking I have for sale an ASRock EPYCD8-2T & Noctua NH-U14S TR4-SP3 heatsink/fan purchased retail from scan.co.uk. I have the original boxes for the motherboard and heatsink/fan which will be included. Looking for £425 for the motherboard...
  3. J

    Used EPYC 7601 post code 78

    Hey, So I've got a supermicro H11DSI-NT, got two different epyc 7601s from ebay from 2 different vendors that looked somewhat reputable. Both are giving me post code 78. Fans spinning, but nothing booting, no video, IPMI not even showing correct hardware info. Exact same behavior for both CPUs...
  4. ExecutableFix

    FS: Multiple EPYC Rome 7V12 | Updated November 14th

    I've got the following EPYCs up for sale: Qty Item Specs Price 0 EPYC Rome 7V12 64-core processor 2.45GHz base, 3.3GHz boost, 240W $ 3500 / € 3050 ppu 0 EPYC Rome 7452 32-core processor 2.35GHz base, 3.35GHz boost, 155W $1400 / €1150 ppu 0 EPYC Rome OEM 7742 64-core processor...
  5. D

    Cooling VRM on Epyc server board in a consumer case

    I'm considering a 7302p on an Asrock rack ROMED8-2T or Asrock rack EPYCD8-2T motherboard for my new ATX tower workstation for simulation work. The workstation will regularly need to run experiments for 24-48 hours all-core. Both those boards have a tiny little heatsink on the VRM (see pic)...
  6. L

    Threadripper or EPYC for a gentoo workstation?

    I've been planning for a new computer build for a couple months now. With the new 3990x and EPYC server processors launching, I've been wanting to move away from my current X299 build as my chip has been really tough to cool and my needs have shifted. With this, I've kind of planned out two...
  7. A

    Epyc Rome vs Scalable

    Need advice: It's time to upgrade my Xeon E3-1230 v1 home server. Current: ESXi, ZFS storage pools, video streaming server, a few VMs. Would like something that I can eventually offload archival video transcoding from my Xeon W workstation. A family member wants to do some basic machine...
  8. C

    Asus KNPA-U16 BIOS update Naples->Rome

    I got an Asus KNPA-U16 today for my Rome Epyc processor. I'm able to power it on and get the iKVM going (and log in via the maintenance Ethernet port), but the board does not POST. It has the Naples 902 BIOS on it. There's a BIOS and SOP for updating on the Asus website, but it involves using...
  9. ExecutableFix

    Finally: Overclocking EPYC Rome ES

    In November of 2019 I first got my hands on an AMD EPYC Naples engineering sample. I thought it was really cool you could overclock 32-cores for a lot cheaper than a 2990WX and achieve mostly the same performance. Once I saw that there were next-generation EPYC Rome engineering samples floating...
  10. A

    Overclocking SOC and RAM voltage on Supermicro H11DSI?

    Hi guys, I recently bought two Epyc 7551 ES chips from eBay and have been encountering memory instability issues. I followed another post here about 1st gen Epyc overclocking using Zenstates and I'm currently running 3.3GHz 1.175V with SMT off on both chips with only VRM cooling being a real...
  11. S

    Dual AMD EPYC 7742 workstation build

    Hi, I'm looking for some advice on building a powerful workstation for some specific use cases that my team has. I came here after watching this video and checking this detailed post about the same. I really liked the details provided and how this setup can absolutely annihilate similar ones...
  12. A

    How NVMe servers deliver PCI to the drives?

    How do the servers like this 7232P https://www.thinkmate.co/system/rax-qn24-12e2 with 24x NVME(each is 4x pci) and 1 CPU, connect the drives to the CPU? Do they use some kind of breakout boards for nvme? It it possible to assembly DIY >16 disk all-nvme storage right now and what cards may i need...
  13. K

    Supermicro H11DSi memory bandwidth

    Hello! I have built a machine with 2 AMD Epyc 7282 CPUs on a Supermicro H11DSi board. It has 8 RAM slots per socket. I have 8 sticks of 16GB DDR4-3200 registered ECC memory, that is 4 sticks per socket. The problem I'm having is - when the system is fully assembled multiple benchmarks show...
  14. B

    EPYCD8-2T Serious issues

    Hi mates. I think that my EPYCD8-2T failed on me (at the worst moment, of course). My plight started 2 days ago, when I added the fourth GPU. The board did not boot properly (no screen output), and after the usual 30/40 secs, the power draw skyrocketed at almost 300W. No ssh server running, so...
  15. A

    How to create a bootable NVMe RAID 0 on EPYC 7601 (H11DSi-NT rev. 2.0)?

    BIOS doesn’t show any RAID option. So, is it a “software only” option? Why did they miss EPYC? (as THREADRIPPER has an option)
  16. C

    ASRock Rack EPYC3251D4I-2T and Samsung LR-DIMMs

    Does anyone have any experience with the ASRock Rack EPYC3251D4I-2T and LR-DIMMs? In the memory QVL, there is a 32GB LR-DIMM from Crucial which is listed. I also asked ASRock Rack support whether Samsung LR-DIMMs would be compatible, and they said they "theoretically should be". So based on...
  17. chriscambridge

    Gigabyte HPC Server cooling question?

    Gigabyte G482-Z50 Does anyone know, or could find out (as I think this server is pre-release), exactly how the following Gigabyte HPC server cools its CPUs? (excluding heat sinks) As you can see there are no front chassis fans, only fans behind the GPUs and at the back of the Chassis; hence my...
  18. B

    EPYCD8-2T: two questions about Linux and IPMI

    Hi, I just built a system with a 7282 and an Asrock Rack EPYCD8-2T. It seems to be rock solid with Lubuntu 18.04 but here are a couple of question I really hope you could answer since I'm driven crazy with them. 1. OS-independent: I just cannot manage to have the IPMI working over the...
  19. D

    Epyc Rome IFOP limited to 1467MHz?

    AMD released a Workload Tuning Guide: https://developer.amd.com/wp-content/resources/56745_0.80.pdf So, as the doc says, the Infinity Fabric will have a maximum speed of 1467 MHz (lower in some platforms). AMD has advertised Epyc Rome to supporting 3200MHz DDR4. Why does it limit IFOP to...
  20. Y

    Dual Epyc 7742 and stockfish

    Could Patrick or someone tell me what kind of difference in NPS can I expect when running Stockfish chess engine with 2x Epyc 7742 cpu's in a Supermicro H11DSi-NT motherboard with DDR4-2666 MHz ram or DDR4-3200MHz ram? I read that in an AMD it can be several percent (~5) faster in benchmarks...