Overclock.net › Forums › Components › Power Supplies › Would my PSU be enough for CrossFire?
New Posts  All Forums:Forum Nav:

Would my PSU be enough for CrossFire?

post #1 of 13
Thread Starter 
I want to do 5830+5850...no matter how i look at it, i will be at almost the bare minimum.

If you ask why not do 5850+5850, well this chart says otherwise

http://sites.amd.com/PublishingImage...hart_1618W.jpg
New rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5-4670k ASRock Z87 Pro4 GTX 760 Windforce3x OC 2x1GB Kingmax+1x1GB A-Data+1x2GB A-Data 1333MHz 
Hard DriveOptical DriveOSMonitor
WD 640GB 16MB Cache LG DVD Drive Windows 7 64bit LG Flatron W2261VP-PF 
KeyboardPowerCaseMouse
CM QuickFire TK Red Chieftec 600w JARComputers CM Storm Spawn 
Audio
Superlux HD330 
  hide details  
Reply
New rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5-4670k ASRock Z87 Pro4 GTX 760 Windforce3x OC 2x1GB Kingmax+1x1GB A-Data+1x2GB A-Data 1333MHz 
Hard DriveOptical DriveOSMonitor
WD 640GB 16MB Cache LG DVD Drive Windows 7 64bit LG Flatron W2261VP-PF 
KeyboardPowerCaseMouse
CM QuickFire TK Red Chieftec 600w JARComputers CM Storm Spawn 
Audio
Superlux HD330 
  hide details  
Reply
post #2 of 13
I don't get what you mean when you say "the chart says otherwise". It states that 5850+5850 is recommended.



As for your PSU, it doesn't look good. You'll need 300w (each card is 150w) and with the rest of your system it looks like you're pushing it.
Bye Bye 775
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k @ 4.5GHz ASUS P8P67 PRO MSI GTX 660 Ti Power Edition  2x4gb Ripjaws@1866MHz 
Hard DriveOptical DriveOSMonitor
840Pro 128 | 3xWD Vraptor | 1.5TB Green LG 6X Blu-ray /HD-DVD combo Win7 Ultimate 64bit 2 x U2311H 1920x1080 
KeyboardPowerCaseMouse
Logitech G710+ Corsair HX620 Corsair 600t Logitech G500 
  hide details  
Reply
Bye Bye 775
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k @ 4.5GHz ASUS P8P67 PRO MSI GTX 660 Ti Power Edition  2x4gb Ripjaws@1866MHz 
Hard DriveOptical DriveOSMonitor
840Pro 128 | 3xWD Vraptor | 1.5TB Green LG 6X Blu-ray /HD-DVD combo Win7 Ultimate 64bit 2 x U2311H 1920x1080 
KeyboardPowerCaseMouse
Logitech G710+ Corsair HX620 Corsair 600t Logitech G500 
  hide details  
Reply
post #3 of 13
Thread Starter 
Actually the 5850 at full load has been proven to be 277w
New rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5-4670k ASRock Z87 Pro4 GTX 760 Windforce3x OC 2x1GB Kingmax+1x1GB A-Data+1x2GB A-Data 1333MHz 
Hard DriveOptical DriveOSMonitor
WD 640GB 16MB Cache LG DVD Drive Windows 7 64bit LG Flatron W2261VP-PF 
KeyboardPowerCaseMouse
CM QuickFire TK Red Chieftec 600w JARComputers CM Storm Spawn 
Audio
Superlux HD330 
  hide details  
Reply
New rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5-4670k ASRock Z87 Pro4 GTX 760 Windforce3x OC 2x1GB Kingmax+1x1GB A-Data+1x2GB A-Data 1333MHz 
Hard DriveOptical DriveOSMonitor
WD 640GB 16MB Cache LG DVD Drive Windows 7 64bit LG Flatron W2261VP-PF 
KeyboardPowerCaseMouse
CM QuickFire TK Red Chieftec 600w JARComputers CM Storm Spawn 
Audio
Superlux HD330 
  hide details  
Reply
post #4 of 13
That depends on which Chieftec it is, which you didn't mention. It's probably fine though.

277W is definitely a system load figure. The HD 5850 wouldn't be sold with two 6-pin PCI-E (nominally guidelines say max draw 75W from socket, 75W for each 6-pin for a max of 225W for that configuration) if it drew that kind of power.

Gaming load is more like 125W for a HD 5850. Furmark could be quite a bit higher, but it's not going to be over double. See here
http://www.xbitlabs.com/articles/vid...0_4.html#sect0
post #5 of 13
Quote:
Originally Posted by farmdve View Post
Actually the 5850 at full load has been proven to be 277w
That's system load. The 5850 is a 150W card and the 5830 and 5870 are 170W cards.


277W is like a GTX580.
post #6 of 13
I am running two 5850's with a 750watt and a 72 amp 12v. My PSU squeels a little when I kick furmark on, but she takes it like a pro. My voltage conditioner also kicks into boost mode for my 120v too

As long as your 12v is decent 600watts might be ok, but you would probably be right on line at best
My System
(16 items)
 
  
CPUMotherboardGraphicsGraphics
2600K @ 4.7GHz Asus P8P67 B3 GTX 580 EVGA Hydro Copper 2 GTX 580 EVGA  
RAMHard DriveOptical DriveOS
4x4GB G.Skill Ripjaws bunch of 'em Blu-Ray For movies Windows 8.1 
MonitorMonitorKeyboardPower
24.4" Hans G HH251 X2 Yamakasi DS270  Blah 1000watt Super Flower 
CaseMouseMouse PadAudio
Built into Desk Microsoft SideWinder X8 Comfy one... Creative Extreme Gamer 
  hide details  
Reply
My System
(16 items)
 
  
CPUMotherboardGraphicsGraphics
2600K @ 4.7GHz Asus P8P67 B3 GTX 580 EVGA Hydro Copper 2 GTX 580 EVGA  
RAMHard DriveOptical DriveOS
4x4GB G.Skill Ripjaws bunch of 'em Blu-Ray For movies Windows 8.1 
MonitorMonitorKeyboardPower
24.4" Hans G HH251 X2 Yamakasi DS270  Blah 1000watt Super Flower 
CaseMouseMouse PadAudio
Built into Desk Microsoft SideWinder X8 Comfy one... Creative Extreme Gamer 
  hide details  
Reply
post #7 of 13
I'm pretty sure you would have no problem if its a good power supply.
Some power supplies are rated higher than actual continuous output.
post #8 of 13
i saw a wall load of 344 watts while gaming with my old 5850 crossfire clocked to 1ghz core

so you'll be fine
Ultra mega
(14 items)
 
  
CPUMotherboardRAMHard Drive
The brain of Leonardo da Vinci the skill of Michelangelo  The passion of Enzo Ferrari  Fort Knox 
Optical DriveCoolingOSMonitor
Hubble telescope Bio organic dark matter when you see it you'll know the irl eyes 
KeyboardPowerCaseMouse
Neural interface  SSj 9001 Goku Im on it Sabretooth wolf rat 
Mouse PadAudio
skin of a t-rex the yell 
  hide details  
Reply
Ultra mega
(14 items)
 
  
CPUMotherboardRAMHard Drive
The brain of Leonardo da Vinci the skill of Michelangelo  The passion of Enzo Ferrari  Fort Knox 
Optical DriveCoolingOSMonitor
Hubble telescope Bio organic dark matter when you see it you'll know the irl eyes 
KeyboardPowerCaseMouse
Neural interface  SSj 9001 Goku Im on it Sabretooth wolf rat 
Mouse PadAudio
skin of a t-rex the yell 
  hide details  
Reply
post #9 of 13
Thread Starter 
Well i am now considering maybe getting the 6950(depends on what money will say when the time comes) but the 1GB not unlockable version.

The problem is however the PSU. This is the PSU

http://www.newegg.com/Product/Produc...82E16817202006
http://www.chieftec.eu/index.php?opt...sk=view&id=319

The problem i see, is not currently the wattage, but the fact that there are only two 6pin connectors for just one card(maybe there is a cable that is lying around, but i havent seen one).
What do i do in this situation? Except buying a new PSU
Is it possible to add more cables for crossfire? (yes i know the 6950 can't be crossfired with 5850)
Edited by farmdve - 5/12/11 at 10:04pm
New rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5-4670k ASRock Z87 Pro4 GTX 760 Windforce3x OC 2x1GB Kingmax+1x1GB A-Data+1x2GB A-Data 1333MHz 
Hard DriveOptical DriveOSMonitor
WD 640GB 16MB Cache LG DVD Drive Windows 7 64bit LG Flatron W2261VP-PF 
KeyboardPowerCaseMouse
CM QuickFire TK Red Chieftec 600w JARComputers CM Storm Spawn 
Audio
Superlux HD330 
  hide details  
Reply
New rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5-4670k ASRock Z87 Pro4 GTX 760 Windforce3x OC 2x1GB Kingmax+1x1GB A-Data+1x2GB A-Data 1333MHz 
Hard DriveOptical DriveOSMonitor
WD 640GB 16MB Cache LG DVD Drive Windows 7 64bit LG Flatron W2261VP-PF 
KeyboardPowerCaseMouse
CM QuickFire TK Red Chieftec 600w JARComputers CM Storm Spawn 
Audio
Superlux HD330 
  hide details  
Reply
post #10 of 13
You use a 2xMolex to 6PCIE adapter. It's messy, and if you care about cable management you may reconsider the PSU.

Two six pin is all you need, unless are you going to run the 5850 too?
Bye Bye 775
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k @ 4.5GHz ASUS P8P67 PRO MSI GTX 660 Ti Power Edition  2x4gb Ripjaws@1866MHz 
Hard DriveOptical DriveOSMonitor
840Pro 128 | 3xWD Vraptor | 1.5TB Green LG 6X Blu-ray /HD-DVD combo Win7 Ultimate 64bit 2 x U2311H 1920x1080 
KeyboardPowerCaseMouse
Logitech G710+ Corsair HX620 Corsair 600t Logitech G500 
  hide details  
Reply
Bye Bye 775
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k @ 4.5GHz ASUS P8P67 PRO MSI GTX 660 Ti Power Edition  2x4gb Ripjaws@1866MHz 
Hard DriveOptical DriveOSMonitor
840Pro 128 | 3xWD Vraptor | 1.5TB Green LG 6X Blu-ray /HD-DVD combo Win7 Ultimate 64bit 2 x U2311H 1920x1080 
KeyboardPowerCaseMouse
Logitech G710+ Corsair HX620 Corsair 600t Logitech G500 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Power Supplies
Overclock.net › Forums › Components › Power Supplies › Would my PSU be enough for CrossFire?