In contrast, the i9-7980XE is MSRP of $2000, only has 4x DDR4 controllers and is single-socket only.
The 18-core Xeon Gold 6140 is $2400. Only 6x DDR4 controllers (although it seems to go up to quad-socket for what its worth).
AMD EPYC offers the single-socket 24c / 48t 7401p in and around $1300 (I'm seeing it ~$1100 and $1200). 8x DDR4, so its far more comparable to the Power9 machine. But Power9 is likely faster on a single-core basis, has a unified mesh instead of the 4x NUMA configuration of EPYC. EPYC doesn't have a unified L3 cache: tasks only effectively have 8MB of L3 (but there are lots of 8MB L3 caches scattered throughout EPYC).
So EPYC vs Power9 is a fair comparison at ~$1300, but Intel is severely overpriced in comparison. Actually, I'm not liking any of Intel's higher end options this generation, EPYC and Power9 seem superior on paper... as long as you don't need AVX-512.
Power certainly exists, its just less popular. The above board is under $250 and seems to be good enough for tinkering usage.
Software support is certainly weaker. I think Power9 primarily exists for people who are planning to write their own application servers, or otherwise are willing to spend time recompiling OSS over to the Power9 architecture (Gentoo style or similar).
A "real" server application will want to buy a Talos II Workstation, for $3000+. If you're worried about performance, you have to develop and test on the big stuff.
If you're planning on a high-performance database optimizations (ie: lets say you wanted to improve PostgreSQL's performance), you wouldn't test on a Rasp. Pi or Intel i7. You'd buy a Thunderx2 ARM, Intel Gold, or AMD EPYC to test on. The architecture of "big boy" chips is grossly different than the smaller scale stuff.
----------------
And the way you "test" on big-boy machines, is through cloud services. You don't necessarily have to buy a full machine if you're testing (although local access is certainly useful).
That is starting to approach the price point where it's worth it if you want to tinker, but with something that is a lot closer to a real machine than a $250 embedded board.
I tried taking a look for cloud services that offer POWER machines, but couldn't find anything that I could just sign up for and try for relatively cheap. There are a couple of universities that have free POWER clusters that you can request access to, but for tinkering I'd actually rather be able to pay for what I'd need rather than having to manually request access.
Do you have references to cloud services that would allow you to easily get access to POWER9 systems by the hour? IBM's own cloud services only seem to offer bare-metal POWER8 servers by the month; as far as I can tell (from their fairly confusing pricing page and docs), all of their virtual servers or hourly servers are Intel.
I find old-press releases going to broken web-pages: https://www.ovh.com/world/news/cp1606.world_exclusive_ovhcom...
But that's not really helpful. Hmm, I guess Power8 / Power9 cloud systems seem to have disappeared. IBM really needs to work on getting cloud-instances ready for tinkering.
> Raptor does have a sub-$2000 machine on pre-order: https://www.raptorcs.com/content/TL1BC1/intro.html
With RAM and storage, it will be $3000+.
With "price/performance" parts, like the $1300 18-core CPU (something that would make the entire purchase worth it IMO), you'd be above $4k+.
Although, for RAM and storage you can purchase that separately at cheaper prices.
I just tried to sign up for IBM's cloud, to see if I could use the limited free trial or $200 credit to try out one of the bare-metal systems.
Nope. The limited free trial only seems to apply to a few of their SaaS offerings; and the $200 credit also doesn't apply to their "infrastructure services" like VMs, bare metals servers, storage, etc.
Additionally, it looks like you need to get manual approval for you account to be able to use the VMs; even once I added my credit card info, they tell me my account needs to be reviewed by someone before I can actually rent server time.
On AWS or GCS, you just sign up and spin up VMs. I've used that many times for quick compat testing against different operating systems, some quick extra CPU cycles, deploying test servers, and so on.
But on IBM's cloud, you need someone to actually manually approve your account before you can do anything but use their SaaS offerings.
They really don't seem to want to attract people casually trying things out.
edit: after a bit, they did approve my account for infrastructure access. But the bare-metal POWER servers can't be rented by the hour, only by the month, and they start at $1000 per month. Still not really helpful for casual exploration. They also have such wonderful usability features as requiring you to allow popups in order to configure and order servers or VMs.
This is quite inconvenient for someone just wanting to do a little bit of experimentation before committing.
For instance, I was interested in experimenting with AltiVec on POWER for the Rust bug bounty. I wanted to get an idea of the scope of the problem, see how things work in C and C++, do a little bit of quick microbenchmarking in C and C++ to see how it compares to SSE.
If it turns out that it was something I was interested in pursuing further, I might try to work with the Rust project to apply for this kind of access officially for a CI system for the Power architecture. But that's a lot of trouble to go through if I just want to do some quick experimentation before deciding on whether the scope of the project is worth it.
Point being: if you want to really develop for big things (like ThunderX2 or Power9), you buy the big thing. I'm not entirely sure if the "small embedded" stuff, like Rasp. Pi, really help.
I actually have an Excel spreadsheet open right now with some preliminary numbers (evaluating some random specs from a recent Anandtech article, along with Sforza CPUs, out of curiosity), and in terms of $/thread, the Sforza CP9M06, an 8-core 4SMT chip for $600, is only beaten in $/thread by a Cavium ThunderX2 9980-2200, at $18.5/core vs $14.02/core, thanks to 128 threads. But, at a price of $1,800, with a significantly lower base/turbo clock frequency (3.5GHz+ vs 2.2+) and less than 1/2th the L3 cache.
Granted, these numbers are more or less impossible to verify at this moment and unbelievably fuzzy, and it's incomplete without filling in all the data on a wider array of Xeons, EPYC machines, and real benchmarks. But the back of the envelope numbers come off as pretty solid, and my experience with POWER8 makes me think these machines will perform very well.
There is also the fact that IBM is quite open about POWER this time around, all the way to making all their firmware/boot/BMC code open, and encouraging patches, under FOSS licenses, and making all the architecture/firmware documentation freely available. Might not matter for hyperscale data centers that negotiate themselves, but certainly a nice bonus.
The biggest price-related barrier at the low end is really the cost of the mobos, though. That's where most of the TALOS II's price goes to. The CPUs are relatively cheap in comparison.