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ASUS dual-CPU server boards...

post #1 of 3
Thread Starter 
Do the LGA 2011 ones even support 2011 i7 chips? And if they do, are they OCable? I'm probably totally nuts here but it would be very nice to be able to OC a dual-processor board.


Basically I'm forced to make a decision here between clock speed and cores. My current workstation is an i7 3930k @ 4.5GHz, and I'm putting together some options for my work to purchase similar workstations. Leaving cost aside for a moment we could go with a Xeon E5-2687W @ 3.8GHz but I'm not at all convinced an extra 4 threads would make up for a 16% reduction in clock speed. In an ideal world I'd use a dual-CPU board and stick two 3930k's in it and OC to 4.5GHz, thereby getting the best of both worlds. But my gut tells me those dual-CPU won't OC. So... will they?
Work Rig
(11 items)
 
  
CPUMotherboardGraphicsRAM
3930k ASUS Sabertooth X79 TUF EVGA GeForce GTX 660 Patriot Viper 3 Intel Extreme Masters 1866MHz 
Hard DriveHard DriveHard DriveCooling
OCZ 240G Vertex 3 SSD Seagate SV35 Series 3TB Seagate SV35 Series 3TB Corsair H100i 
OSPowerCase
Windows 7 Enterprise x64 Corsair 860W 80+ Platinum Cooler Mster Cosmos II Ultra 
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Work Rig
(11 items)
 
  
CPUMotherboardGraphicsRAM
3930k ASUS Sabertooth X79 TUF EVGA GeForce GTX 660 Patriot Viper 3 Intel Extreme Masters 1866MHz 
Hard DriveHard DriveHard DriveCooling
OCZ 240G Vertex 3 SSD Seagate SV35 Series 3TB Seagate SV35 Series 3TB Corsair H100i 
OSPowerCase
Windows 7 Enterprise x64 Corsair 860W 80+ Platinum Cooler Mster Cosmos II Ultra 
  hide details  
Reply
post #2 of 3
IIRC the desktop variants of CPUs don't support multi sockets as there is no additional QPI link to facilitate inter-processor communication.
post #3 of 3
Not sure what you really need.

  • i7-39xx are single socket only
  • E5-26xx can be used single socket or dual socket in appropriate m/b
  • The Xeons have special provisions for high speed I/O, the i7 lack (Direct cache, ..)
  • The Xeons aren't overclockable
  • Is your application memory bandwidth bound or compute bound? The former benefits from dual socket more
  • how important is system stability? Xeons support ECC memory which is a key component for better stability. I7 CPU's don't
  • How demanding is your application? If at the level of Linpack, then an O/C CPU will probably fail faster than a stock clocked CPU
  • Perceived speed is often more dependent on a properly configured I/O system than CPU config (More than 3 SSDs connected to SATA ports on a mobo is useless for top speed)
  • etc,
etc.
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