[QUOTE=Mark Rose;423919]Yes.

Haswell-E has quad channel. Skylake has dual channel ([STRIKE]even if[/STRIKE] [U]because[/U] there are four slots).[/QUOTE]
Fixed it for you. Four channels means 8 slots. DDR4 is a bit different.

Luigi: If you need the best price/performance compromise, Skylake is the way to go.
If you don't mind paying more, but having a really performant top computer, then Haswell-E is the way to go.

Thinking "for the future" is not the right way to go now, like when you said "I will end up again having an old CPU", that is not true. The actual skylakes and the future skylakes will have different features, like more memory bandwidth, etc, which means more pins, a different socket, you don't suppose that the "big skylake" will stay on 1151 pins socket, do you? Look how other older architectures evolved, not only intel, but also nvidia, etc. The "big chip" come later, when the lessons are learned, and it is not compatible with your old mobo.

So, you have to chose between "ending up again with an old Hasswell-E CPU" and "ending up again with an old Skylake CPU".

Don't ask me which one I would chose, money aside. Of course, as George said, only you can decide if it worth the additional cost.

Here we go for the second round...
[COLOR="Red"]Open questions:[/COLOR][LIST=1][*]How should I choose the RAM? [COLOR="Green"]2x16GB DDR4-3200 dual channel, [COLOR="DarkOrange"]Kingston or Corsair ?[/COLOR][/COLOR][*]MB ASRock Z170M-Pro4s [COLOR="DarkOrange"]is a valid choice? [/COLOR]I always had ASUS or Gigabyte.[*]I plan to use the GTX980 for number crunching: would a video card integrarted to the mainboard be of any help letting the GTX run only on CUDA programs? [COLOR="Green"]MB with integrated video card.[/COLOR][*]What processor for a desktop environment? [COLOR="Green"]Skylake 6700K @ 4.0 GHz.[/COLOR][*]What cooler? [COLOR="DarkOrange"]What about the CoolerMaster Hyper 212 EVO?[/COLOR][*]What ssd? [COLOR="Green"]Samsung 850 EVO 250 GB.[/COLOR][*]What HDD? [COLOR="Green"]Right now, I only know it should be SATA 2TB 7200 rpm. [COLOR="DarkOrange"]Ideas on the producers?[/COLOR][/COLOR][/LIST]
Thank you for sharing your ideas with me :smile:

[QUOTE=Madpoo;423938]You could imagine what it would look like when the Skylake-E stuff rolls out with quad channel. I think that's when I'd see servers with faster DDR4 module support. As it is, Haswell-E maxes out at 2133.[/quote]

The rumour is that Skylake Xeon (and hence Skylake-E) will roll out with six-channel.

[QUOTE=fivemack;423984]The rumour is that Skylake Xeon (and hence Skylake-E) will roll out with six-channel.[/QUOTE]

Rrrrrrrrrrrrrrrrrrrrr :smile:

I need to start saving up for it.

[OT]As long as one is dreaming, this little thing, which showed up in my email, has a lot going for it: [URL="http://hexus.net/tech/reviews/mainboard/89858-gigabyte-mw70-3s0/"]MW70-3S0[/URL] :w00t:
I have no clue as to the cost. :shock: [/OT]

[QUOTE=kladner;423996][OT]As long as one is dreaming, this little thing, which showed up in my email, has a lot going for it: [URL="http://hexus.net/tech/reviews/mainboard/89858-gigabyte-mw70-3s0/"]MW70-3S0[/URL] :w00t:
I have no clue as to the cost. :shock: [/OT][/QUOTE]

The availability is still a bit sparse at the time of writing, but that should change very soon as the board is being rolled out to the different markets. The MSRP for the UK is set to £430 and the US price is set to $585.

[URL="http://www.eteknix.com/gigabyte-mw70-3s0-intel-c612-dual-cpu-workstation-motherboard-review_/12/"]MW70-3S0[/URL]

Adding a couple of E5-2699 v3 18 physical cores processors for $7,600

[QUOTE=ET_;424000]The availability is still a bit sparse at the time of writing, but that should change very soon as the board is being rolled out to the different markets. The MSRP for the UK is set to £430 and the US price is set to $585.

[URL="http://www.eteknix.com/gigabyte-mw70-3s0-intel-c612-dual-cpu-workstation-motherboard-review_/12/"]MW70-3S0[/URL]

Adding a couple of E5-2699 v3 18 physical cores processors for $7,600[/QUOTE]

The dual E5-26xx v3 systems are like the ones that I have (just one of them...waaahhh) and AirSquirrels.

Of course mine is a dual 14-core and I think AirSquirrels has a dual 16-core. You pay a HUGE premium for the CPUs with the most cores, but if you look at clock speeds you can probably swing a good deal by figuring out the cost versus cores*GHz.

I did M49 in 34 hours, and I think AirSquirrels was able to do it in < 33 hours or something.

I only managed to get it running on 20 cores of the 28 total... the memory bandwidth seemed to limit it (or even impact performance negatively) when I went past 14 cores on one and 6 cores on the other socket.

But then the 14-core runs at 2.6 GHz (plus 5x133 turbo), and the 16-core (I assume the E5-2698 model) is 2.3 GHz (plus 5x133 turbo). So maybe the slightly slower CPU kept the memory from flooding? Anyway, still really fast.

[QUOTE=ATH;423987]Rrrrrrrrrrrrrrrrrrrrr :smile:

I need to start saving up for it.[/QUOTE]

I have a reasonably serious intention to replace my current 48-core Opteron server with a dual 12-core Skylake Xeon box in 2017; but this year that intention reifies itself in putting a few hundred pounds a month into an optimistically-named account.

[QUOTE=ET_;424000]The availability is still a bit sparse at the time of writing, but that should change very soon as the board is being rolled out to the different markets. The MSRP for the UK is set to £430 and the US price is set to $585.

[URL="http://www.eteknix.com/gigabyte-mw70-3s0-intel-c612-dual-cpu-workstation-motherboard-review_/12/"]MW70-3S0[/URL]

Adding a couple of E5-2699 v3 18 physical cores processors for $7,600[/QUOTE]
Not to mention populating an optimal number of memory slots.

I attempted a more modest approach, with mere 8-core, 2.4G CPUs. :smile: Two of [URL="http://www.newegg.com/Product/Product.aspx?Item=N82E16819117479"]these[/URL], plus one of [URL="http://www.newegg.com/Product/Product.aspx?Item=N82E16813128830"]these[/URL] comes to USD 2030, at Newegg ATM.

I then added USD 4160 for two [URL="http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&IsNodeId=1&N=100007952%20600418367"]128 G quad-channel sets[/URL].
Total: 6190 usd, and still no case or PSU. That could be brought down by different CPUs and RAM, of course.

hi,
i do recommend for a hdu
Western Digital Re Enterprise Capacity 2TB, SATA 6Gb/s (WD2004FBYZ) around € 160,-
Western Digital Se 2TB, SATA 6Gb/s (WD2000F9YZ) around € 130,-

[QUOTE=lalera;424024]hi,
i do recommend for a hdu
Western Digital Re Enterprise Capacity 2TB, SATA 6Gb/s (WD2004FBYZ) around € 160,-
Western Digital Se 2TB, SATA 6Gb/s (WD2000F9YZ) around € 130,-[/QUOTE]
WD Enterprise drives are great performers, in my experience. (WD4000FYYZ-1 in my case.)