Primarily because it is the stealth offering. Not even Intel is really promoting it.
Intel barely promote the Xeon UP line as is.
First, that $700 is primarily driven by what Intel charges. There isn't much of a way around that. If have a more price sensitive, cost effective solution present it. The price is hinged primarily on having a higher dynamic range 3.3-3.9 than 3.2-3.8.
I know where the price came from, are you incapable of following what people previously say on this forum? The E5-1660 V2 just isn't worth it to anyone but the bone-headed. Of the hundreds of Sandy Bridge-E and EP workstations I've configured, built, ordered and consulted on since it's introduction only twice have people gone with that price point, one i7-3960X and one i7-3970X because they wanted bragging rights. It is a terrible investment.
A $1,000 more is going to filter off a significant number of users. Their budgets just aren't going to go that high. The other factor you are sweeping under the rug is that Apple puts a 30-35% markup on these CPUs. The bigger the price the bigger the bump. 35% on $700 is $245. On $1,700 it is $595. That $350 additional won't knock off as many as the $1,000 additional but it will be some.
Totally disagree. People have paid similar values for that sort of performance for years. Despite what I said about the P2 price point rarely being purchased by my clients, dozens opted to go with single E5-2687W systems because, although not nearly as good value as an E5-1650 or i7-3930K, they were better than a DP solution. The E5-1680 is in response to vendor/customer demand. Intel would rather people used the E5-1680 V2 than E5-2600 V2s as it strengthen's the branding. I merely floated the E5-1680 V2 as a possibility after being informed of why it exists by someone in the know, although I expected that was why.
25% over what? The 1650 v2 ? The core counts aren't the same. The higher percentage increase from core count increase would come from a 4 core jump rather than a 2. If additional cores help the jump by 4 can be worth another $1K. If have a "good enough" number of cores with respect to the workload then $1K cheaper and faster is better.
Yes, an E5-1680 V2 will be capable of 25% performance over an E5-1650 V2 for some multi-threaded processing workflows, certainly wouldn't be my choice for my personal use. Nor would any of the 10-cores in a single CPU system and I'd rather run dual E5-2643 V2s than a 12-core, even with the extra expense. Whether they use the E5-2670 V2 to keep it lower clocked than the 12-core option, E5-2680 V2 as something substantial over a 6-core, or the E5-1680 V2 as that is what Intel will push; it's only for a small subset. We know it is because "no one" was buying DP Mac Pros. Even the 12-core is going to sell low compared to the number of 4 and 6-core systems.
Chuckle. So Intel "top edge additional tax" pricing doesn't work for the 1660 v2 but does work for the 1680 v2?
The E5-1660 V2 is so similar in performance to the E5-1650 V2 that the premium, from Intel and Apple, makes it just not worth consideration. Even if there was no Apple tax it is poor value. The E5-1680 is at least something different with the potential for big gains with the right workload.
The same priced 10 core has better bang-for-buck than they edge priced 1680. Same reasons why the 12 core doesn't make alot sense in dual (or single) set ups. 8 and 12 (single and dual respectively) weren't even on Intel roadmap for v2 about a year ago. Those were Haswell era kinds of target core counts and the current pricing is indicative of that kind of early generation arrival.
Yes it does and if I had to choose something from that pricing area I'd go with the E5-2680 V2. This is Apple though. In an ideal world we wouldn't even be discussing this; they'd all be available. Thankfully CPU ugprades still look possible on the user level..
End of the day, in the real world, an E5-1660 V2 offers no real productivity gain over an E5-1650 V2. An 8, 10 and 12-core, regardless of the price, does and gives you functionality too in with VMs being so useful. Just remains to be seen what Apple choose which could be 8, 10 or neither.