Hi Raph ...
Yes, ...Mihai was right.

...it's just Maxwell cycling through write/render times.
I'm still waiting on the extra ram to arrive, ...the vendor sent a different brand, ...so I sent it back and I'm waiting the replacement. ...maybe that'll help a little with the RT's. ...like Greg M. had mentioned about things competing for the FSB.
Meanwhile, ..my general experience with using the machine is pretty great. 8 cores is still 8 cores, ..

...it's definitely a hard core multi-tasking machine. I tend to do a lot of cpu intensive things at the same time, ...so the flexibility you get with having the extra cores is nice thing. For example, ..I can set a render to just grab 5 cores[low priority unchecked], ...allocate 2 threads for video encoding and leave a single one for emails/web stuff and as a user you simply don't notice any unresponsiveness. ...plus, ..if you leave the machine and the render has to continue; ... I just re-enable all 8 for mxcl.exe on-the-fly.
Anyway, ...there's lots of scenarios that can be setup. Certainly, the trend is definitely toward cores vs. clock speed ...
..that's my petite review.
btw: ..I don't mind the question of cost. ...the breakdown.
2 ES5345 @ $1000.00/$2000.00
Intel S5000XVN $450.00
Ram: 4GB FB 667MHz Dimms $720.00
eVGA 7950 GT KO: $300.00
Thermaltake 600W PS(server variety) : $250.00
Plextor PX-760A optical drive :$100.00
2 74GB WD Raptor's $320.00
LianLi PC-70 $200.00
xp64 : $150.00
...so, ... around $ 4.5K
** Already, I see that a few hundred can be saved on the cpus alone. I saw them for around $850.00 yesterday ...
The best I can ever do is upgrade (maybe) someday to the 2.67Ghz ES5355's. ...again, ...that's a maybe.
One other thing, ...we really need the material preview to be multi-core, ..it's really bottleneck otherwise. I know that's been mentioned before, ...but I'm saying it again.

Changing that single thing might just be the biggest performance hike in workflow that NL could do, ....and that's IMHO.
A couple of pics ...
