Thinking about EVGA's dual CPU mobo, but have questions...

[Talonman]

I am thinking about building a new system using the EVGA dual socket mobo.

1 thing bothers me so far that I am trying to get squared away in my mind....

http://www.xtremesystems....hp?t=242204&page=3

Post 65, and 66...

lutjens is running on a Dual CPU mobo (Tyan S7025), and (2) Xeon W5580@ 3.20GHz CPU's.

When he ran a ray-tracing Pinball game, his CPU's didn't load up to 90% or so...

"Got 18 FPS, but only ~45% CPU usage. Is there something I'm missing to improve multithreading? Couldn't see any CPU usage affinity options in the game and I double checked affinity in Task Manager (all cores are selected).

Edit: For something to do, I ran another instance of the game and did 14 FPS with both copies running simultaneously (FRAPS only displays in the active window, but the same 14 FPS was seen regardless of which instance of the game was selected). Usage with both instances active was 95-100%.
Edit2: Ran the arauna bench as well (one cycle...its zzz time for me). Better scaling than the pinball game, but CPU usage varied widely, hitting anywhere from 20-80% usage across all cores. Anyhow, 7046 was the result..."

I consider all CPU's running near their full potential to do ray tracing, a critical success factor.

Why didn't they run with higher utilization, giving him more performance?
These configs produce just as much:
ajaidev ------------ i7 980X@ 4.60GHz ---- 21 FPS (32nm Hex Core - HT on)

rge ----------------- i7 950@ 4.81GHz ---- 20 FPS (45nm Quad Core - HT on)

AkRazor ------- Xeon W3520@ 4.41GHz ---- 19 FPS (45nm Quad Core - HT on)

-=DVS=- ------------ i7 920@ 4.30GHz ---- 18 FPS (45nm Quad Core - HT on)
RCG Bex ------------- i7 920@ 4.18GHz ---- 18 FPS (45nm Quad Core - HT on)

He scored 7046 on the benchmark, but these almost did too...
http://www.xtremesystems....howthread.php?t=242688
#1 --- 6518 - rge -----------Core i5 950--------- 4600Mhz -- 4/8--
#2 --- 6032 - Pyr0 ----------Core i7 920--------- 3800Mhz -- 4/8--

I would want my dual CPU'ed mobo to produce more. Could be just an app thing, could be the way things are on all apps...
Could be the GHz difference too on the CPU's?
I don't know.

The same seems to happen to Particle's dual Hex-core setup.

"4000, Particle, Dual AMD Opteron 2427, 2380 MHz, 12/12

http://www.pcrpg.org/pics/computer/arauna.png

Note the low CPU utilization. I know that's a known issue, but I think a star or something would make it less embarrassing."

Are the dual CPU'ed systems actually going to give us better performance?