Upgrading a 6years old machine

[Amxx]

I mostly work on my dell xps15 laptop (4702HQ / 16Go Ram / 512Go SSD) with runs on linux

 

For games, I uses my desktop pc which starts to get a bit old. However I plan to upgrade it in the next few months, as I may use it for large computation.

I'll use it for scientific computation, which would take to long to run on a laptop but would be small enough so I don't have to run it on clusters using massivelly parrallel paradigm

 

Ok so my current destop buiild is

- Asus P5QL Pro (LGA775)

- intel E5200 dual core (2.5Ghz, OC at 3.25Ghz)

- 8Go DDR2 OCZ

- ATI HD 6850

- a bunch of HHD, including a WD Green 2To for storage

- Antec 450W 800+ PSU

- Antec nine hundred two case

 

I plan to go for a socket 1150 (not as expensive as a 2011-v3)

- i7 4790K

- 16~32Go RAM

- include a samsung 840 pro SSD (256Go) I own and don't use (was in a previous laptop) for my Linux system

- add another ssh for a Windows system ?

- keep my WD Green 2To (and perhaps add other disks in raid)

 

What I'm not sure about yet

- Which motherboard to use ? I need good networking (dual RJ45 would be nice to have), stability, sata performaces ... but I don't really care about PCI-E, I was thinking about a Z97 chipset

- Which ram model ?

- Keep my HD6850 or upgrade ? (Nvidia 750?)

 

Does the new config makes sense for scientific computation and networking simulation ?

Which motherboard / chipset to use ?

Is an HD6850 enough for games likes LOL / starcraft / diablo in 1080p or should I consider an upgrade ?

 

I'm using dual 1080p monitors but I'm considering changing to a single 21:9 screen

 

PS: compatibility with Xeon-Phi would be a real plus in the long run

[Fgtfv567]

Wow, that's pretty crappy. I'd do a completely new build and just take the hard drives so you don't need to pay for Windows again

[Amxx]

I have free windows licences with my job ... but i'll mostly be using linux anyway

[techguru]

a budget would be nice

[Amxx]

I'd say 700~900$. possibly more, it all comes down to "is the extra really worth it ?"

[Starelementpoke]

If your going to use your gpu over, get a quad xeon with a B85 board. Pretty much an I7 - igpu.

[Amxx]

the B85 motherboard I've looked at don't suport Raid ... That's a big no for me, as for the Xeon, I don't need ECC memory on my desktop (or at least i'm not readdy to pay the price for it), so apart from going 6-8 cores with the new Xeon on 2011-v3 that are uber expensives ...