Lately, at STH, we bought just a few new servers off of Newegg with a CPU many might by no means have heard of, the AMD EPYC 7C13. We had not examined them earlier than, they usually appeared fascinating for one more purpose. These chips appear to promote for not more than $2000 or so, making them extra of a cloud-priced 64-core EPYC than what we usually see available on the market. Allow us to get to that very briefly and determine precisely what the AMD EPYC 7C13 is.
AMD EPYC 7C13 Detials
First off, right here is the lscpu output for the chips. What we will see is that these are Milan technology (EPYC 7003) elements with 64 cores and 256MB of L3 cache.
Doing a fast dmidecode, we will see that these are telling the OS that they’ve a most velocity of 3700MHz and a present velocity of 2000MHz.
Right here is the check system. We will see that the 32MB L3 cache chunks are shared amongst eight cores, and there are eight of these clusters in whole. That is actually a Milan half. It additionally hyperlinks up at PCIe Gen4 speeds, and the 1DPC 8x 64GB DDR4-3200 modules run at full velocity.
AMD doesn’t record these, however you’ll find it on the corporate’s web site. Listed below are the official specs. Be aware that this 64-core CPU can cTDP right down to 165W placing it virtually in step with Xeon CPUs from ~7 years in the past.
We have been a bit fearful that this was some type of locked processor, however the system put in Proxmox VE 8.1 with out problem.
The following query we had was how would this run if we pushed it. So we turned on stress-ng throughout all the 64 core/ 128 thread chip and noticed CPU clocks maintain within the 2.42-2.43GHz vary.
After we did that the bundle energy was typically round 225W, however we noticed it briefly creep above 230W from time-to-time after which again down. Our sense is that the default is 225W TDP, however we watched it go up a bit.
Efficiency-wise, when you see an AMD EPYC 7713P consequence, our preliminary outcomes have been very near this, however we have now not despatched it to the testing information facilities but so the environment was not in the fitting vary to report. Nonetheless, they have been shut.
Since we have now been doing a sequence on the Cloud Native Environment friendly Computing is the Manner in 2024 and Past, we wished to do this CPU. Whereas it isn’t cloud-native, it’s low cost, and at 64 cores, it’s nonetheless lots to consolidate twin socket Xeon E5 V4 servers, Skylake, Cascade Lake, and 1st Gen EPYC 7001 right into a single socket. The massive query was would it not work from an influence perspective.
With a single AMD EPYC 7C13 CPU in a 1U Tyan server with 512GB of RAM (8x 64GB), an OCP 3.0 NIC, and two 3.84TB PCIe Gen4 NVMe SSDs we noticed:
- Idle: 83.3W
- Stress-ng Max: 333.3W
To place that into some perspective, that’s within the ballpark of what we might have anticipated from a 16-core Intel Xeon E5-2600 V4 dual-socket server. Or, put one other means, from a efficiency and energy consumption perspective, this may really be a two dual-socket server-to-socket EPYC story.
Ultimate Phrases
In contrast to lots of AMD’s different CPUs, these appear priced within the $1900-2000 vary and aren’t P-series processors, so they’re dual-socket succesful. The closest regular SKU appears to be the AMD EPYC 7713P, which prices over $5000 on the record value and is single socket-only. Now that AMD is on its newer technology of elements, the EPYC 7003 sequence appears to have elements leaking with extra cloud versus enterprise buyer pricing. If you will get servers with them or to place the elements in, these may find yourself being an amazing worth for these seeking to consolidate legacy servers onto newer {hardware} however not break the financial institution.
