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Effects of Multiple GPUs

post #1 of 3
Thread Starter 
On my sig rig I'm currently folding with 2 gtx570s with each getting around 18K. This machine has the most robust w/c loop of all my machines, so I'm thinking about adding another 570 (from another machine) to it. If that works out I also have a 580 out for RMA to Zotac that I can add once a water block arrives for it. HFM reports this machine around 90K ppd. I would leave the GPUs in the other machines, but I'm quickly tiring of trying to configure them in Ubuntu.

After adjusting settings, the SMP client puts out 57K by using the "smp 11" flag while the GPUs give 35K together. When I disable the GPUs and leave all 12 cores active, my ppd only rises to 61K, so the GPUs more than make up for the loss. Anyone know how more GPUs would affect this system? I'm running the Rampage Extreme 3 motherboard, if possible I would love to run 4 GPUs but don't know if it can handle that. If not, it may be back to fighting with Ubuntu and installing the GPUs on those systems. My other 2 machines are quad cores, so the GPUs have a greater effect on them. That's why I would like to have them in this machine if possible.
Cletus
(13 items)
 
  
CPUMotherboardGraphicsRAM
990X at 4520 mhz @ 1.36v Asus Rampage 3 EVGA GTX570 OC x3 @ 882/1998 12GB Kingston 1600 
Hard DriveOptical DriveOSMonitor
160GB Intel SSD, (4) 2TB WD Black LG Superwriter Windows 7 Pro Asus 27" 
PowerCase
Corsair AX1200 HAF X 
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Cletus
(13 items)
 
  
CPUMotherboardGraphicsRAM
990X at 4520 mhz @ 1.36v Asus Rampage 3 EVGA GTX570 OC x3 @ 882/1998 12GB Kingston 1600 
Hard DriveOptical DriveOSMonitor
160GB Intel SSD, (4) 2TB WD Black LG Superwriter Windows 7 Pro Asus 27" 
PowerCase
Corsair AX1200 HAF X 
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post #2 of 3
Well...If anything you *may*need another PSU. And moar air conditioning.
    
CPUMotherboardGraphicsRAM
Xeon w3680 Gigabyte X58A-UD3R GTX 295 Engineering Samples 2X Corsair XMS3 
Hard DriveHard DriveCoolingOS
Sandisk SSD Seagate Corsair H50 W7 Ult 
MonitorMonitorKeyboardCase
Viewsonic VA1912wb Viewsonic VA912b K350 CM HAF 
Mouse
Logitech M570 
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CPUMotherboardGraphicsRAM
Xeon w3680 Gigabyte X58A-UD3R GTX 295 Engineering Samples 2X Corsair XMS3 
Hard DriveHard DriveCoolingOS
Sandisk SSD Seagate Corsair H50 W7 Ult 
MonitorMonitorKeyboardCase
Viewsonic VA1912wb Viewsonic VA912b K350 CM HAF 
Mouse
Logitech M570 
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Reply
post #3 of 3
Thread Starter 
I'm not worried about the heat, I installed a mini-split system A/c unit in my office last summer. It's extremely efficient and takes care of business.

I have a kill-a-watt and want to monitor power usage in that machine, just don't want to stop it in the middle of a bigadv work unit Once I do that I will know how much room I have for more GPUs.

edit: Found motherboard answer on a Boinc board- mb can handle 4 GPUs number crunching.
Edited by mike597 - 6/3/11 at 4:32pm
Cletus
(13 items)
 
  
CPUMotherboardGraphicsRAM
990X at 4520 mhz @ 1.36v Asus Rampage 3 EVGA GTX570 OC x3 @ 882/1998 12GB Kingston 1600 
Hard DriveOptical DriveOSMonitor
160GB Intel SSD, (4) 2TB WD Black LG Superwriter Windows 7 Pro Asus 27" 
PowerCase
Corsair AX1200 HAF X 
  hide details  
Reply
Cletus
(13 items)
 
  
CPUMotherboardGraphicsRAM
990X at 4520 mhz @ 1.36v Asus Rampage 3 EVGA GTX570 OC x3 @ 882/1998 12GB Kingston 1600 
Hard DriveOptical DriveOSMonitor
160GB Intel SSD, (4) 2TB WD Black LG Superwriter Windows 7 Pro Asus 27" 
PowerCase
Corsair AX1200 HAF X 
  hide details  
Reply
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