Also, the Ryzen 9 3950X.
It has a bit more punch than the 3900X, for ~200$ more.
I built one, a Noctua NH-D15 can cool it at 16*4ghz at 700RPM, so basically almost inaudible even at full load.
No ECC, though.
I built one, a Noctua NH-D15 can cool it at 16*4ghz at 700RPM, so basically almost inaudible even at full load.
No ECC, though.
I assume the 3950X is the same way. The hardware is there, the official blessing is not.
edit: I mean near the DIMMs. Don't try this if you are afraid, or need your hardware. This is a test i'm doing with every build, or any system i have to fix. And it crashes every system, though not at the same places and in the same ways. So far it didn't damage anything permanently, but no guaranties it won't.
edit: By searching for networks i mean for the telcos, not wifi. Then it uses all bands it is capable of.
But I'm of course not suggesting to run it in this state whil doing anything important.
Is ECC useful for a workstation? I thought it was useful for shared servers (VM hosts) to protect against rowhammer & co, but does is have other uses?
Without ECC, modern systems (>= a few GB RAM) will have bits flipping pretty much daily.
Ultimately these flips are caused by charged particles hitting the memory module (a so called 'single event upset' or SEU), and the number of charged particles hitting the modules has not increased with density (although the modules are more sensitive to SEU, it's a smaller effect).
https://storage.googleapis.com/pub-tools-public-publication-...
I think the environment in racks for nodes in whichever formfactor in racks is toxic. Be it EMF interference, power distribution issues, vibrations, and/or temperature. You don't have that in a single system at home, when it is built in a good way, and has stable power. Or at least to a lesser degree.
Until they happen more often that expected. It's something that varies based on building, temperature, etc. environmental factors. And of course on your luck with memory module lottery.
https://storage.googleapis.com/pub-tools-public-publication-...
huh, where ? from what I see here the 3900X is listed at 450€ and the 3950X at 900€ on average in the mainstream websites...
Ryzen has always been very "sensitive" to low-clocked RAM and shows some pretty good scaling as you increase frequency and tighten timings and the ECC UDIMMs on the market are just not binned to do that.
Or convince AMD to stop artificially not supporting registered memory on Ryzen/Threadripper -- the early Athlons supported both.
I wonder if those would run on my Haswell-E xeons. They support RDIMMs, and they are unlocked so nominally they should support higher RAM clocks too (although I've never tried it with RDIMMs, only UDIMMs).
More recently, the W-3175X (Threadripper's real competitor) supports RDIMM as well. So Threadripper actually offers less features than the competition here.
I really would like to see the Threadripper series merged with the 7002P series though. Right now there is no option that gives you both Threadripper-level clocks and large quantities of RAM, the frequency-optimized parts are still a large compromise in performance and aren't widely supported. There is no part that gets you to 4 GHZ on 64 cores with 512+ GB of RAM, despite all of these capabilities existing in their respective segments.
When you are shipping a 64C HEDT processor there is really no longer any meaningful distinction between that and a server processor. And 256GB simply is not enough RAM for a 64C processor. AMD could still upcharge on the multi-socket models, but they are drawing lines between product segments that no longer make sense now that they have pushed core counts so high.
Basically, give us a modern successor to the Intel X5670 series. It's the top of the line, you're paying $4000 for a workstation processor, you should get the whole processor and not have a bunch of disabled features.
The really funny thing is, it's not even a money thing, Epyc isn't even priced significantly higher. 7702P is $4150 at Provantage (HPE p/n P16660-B21) vs $3990 for the 3990X. The 7402P (HPE p/n P16664-B21) is actually $250 cheaper than the 3960X. AMD is no longer using the "traditional" model where workstation is cheaper than server. Workstation is now just as expensive as server. So it's not like giving you Epyc capabilities would mean AMD foregoing any money.
AMD is just drawing arbitrary lines between these product segments because they can.
They should've done that when they changed the socket for the latest generation. Just admit that the existence of Socket TR4 was a mistake and release the new Threadrippers on Socket SP3.
I suspect there are even some people interested in dual socket workstations with 2TB of memory that nonetheless have a 4.5GHz boost clock, because workstations often have mixed workloads. And there is no point in doing market segmentation when all the prices are the same anyway, it's just incompatibility for no reason.
Cooling would become a big issue, though. Air cooling a 280W 3970X in a big tower with sufficient airflow to maintain ambient temperature internally is difficult. I cannot maintain max turbo on all cores.
Putting this in 1 or 2 Us in a server would likely be impossible without water cooling (requiring piping to external liquid coolers (whether radiators or chillers)). There's only so much that increasing air velocity can do in cooling.
I don't know if this is the primary thing holding back Epyc specs, but I know it will be an issue.