If you missed out on the first batch (I did), they have more in stock so you can buy one after all (I did). And after some rapid fire offer/counter offer they came down a whole $3! Its a gigantic win-win all around.
I'd like to take credit, but it was purely by accident. I didn't discover that I needed to be CPU shopping (in my role as the family's help desk and technology personal shopper) until after the first batch sold out. I clicked through the link in the OP just to see who the seller was and if they had any other deals on offer...and there they were.@Markess Thanks for tracking this! my wallet hates you though!
I don't know much about TSV, so have no idea how it might change the equation. But, have you checked how fast your Motherboard of choice can run on 32GB RDIMMs with v4 CPUs? For example, I think that many (all?) Supermicro DP boards with the C612 chipset top out at 2400Mhz with 32GB RDIMMS.What would you do?
Yeah you're right. 2400 on the motherboard side, is the max speed from what I've seen. I guess I was just assuming the 2666 and 2999 sticks themselves would downclock and work fine.. But I'm not sure. Will probably just order the 2666 and let ya'll know. It's a pretty good deal IMO if it worksI don't know much about TSV, so have no idea how it might change the equation. But, have you checked how fast your Motherboard of choice can run on 32GB RDIMMs with v4 CPUs? For example, I think that many (all?) Supermicro DP boards with the C612 chipset top out at 2400Mhz with 32GB RDIMMS.
Oh I think you're right on the downclock. I don't see why they wouldn't downclock, I've never had a problem in that regard. I only meant that if both options are already faster than your Motherboard can handle, its kind of a waste of money to buy the faster, more expensive, one if you're thinking they might not last through another upgrade.I guess I was just assuming the 2666 and 2999 sticks themselves would downclock and work fine..
Any synchronous or low-depth IO.Super interesting. I read that the v4 was better for VM's, though didn't know the detail. Thanks.
Out of interest what sort of real world effect do those latencies matter for? Random4K iops?
Synchronous random writes:
0.5 kbytes: 21.2 usec/IO = 23.0 Mbytes/s
1 kbytes: 21.2 usec/IO = 46.1 Mbytes/s
2 kbytes: 23.3 usec/IO = 83.9 Mbytes/s
4 kbytes: 13.5 usec/IO = 289.3 Mbytes/s
8 kbytes: 18.8 usec/IO = 414.8 Mbytes/s
16 kbytes: 25.7 usec/IO = 606.8 Mbytes/s
32 kbytes: 37.6 usec/IO = 830.5 Mbytes/s
64 kbytes: 55.2 usec/IO = 1131.4 Mbytes/s
128 kbytes: 88.4 usec/IO = 1413.5 Mbytes/s
Excellent info. Your explanation made it finally "click" for me, as to why latency is a big deal. Thank you.Any synchronous or low-depth IO.
I wouldn't delid - xeons are typically soldiered on.So current have 3 x E5-2680 v4's sitting around waiting for action. 2 are going to be going into a dual Xeon workstation setup.
The 3rd I was maybe going to try experimenting on.
Has anyone done a delid, overclock, undervolt or any other interesting hacky type of thing?
Don't have high hopes for overclocking, as I'm assuming multi processor xeons are are probably be locked down and overclock friendly given the need for tighter timings in such a setup. Or maybe not? Honestly I don't really know too much about how multiprocessor loads sync etc.
Maybe delid or undervolt worth it?
These will be in a VM workhorse next to my bed, so optimizing noise and thermals but also having lots of power is sort of a fun challenge.
asusz10ped16Dang. Hopefully the C6220 cloud server equivalent drops in prices as well. Alternatively, what are you guys sticking these in?
I just did a post on board I'm using: https://forums.servethehome.com/ind...rd-lga2011-3-200-obo-140-accepted-ebay.30313/Dang. Hopefully the C6220 cloud server equivalent drops in prices as well. Alternatively, what are you guys sticking these in?