Overclock.net › Forums › Graphics Cards › NVIDIA › Upgrade from GTX460's SLI to 580SLI Question
New Posts  All Forums:Forum Nav:

Upgrade from GTX460's SLI to 580SLI Question - Page 5

post #41 of 48
that is a tight setup
mine are 2 slots apart
i got the backplates on mine
The X58
(23 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 960 @ 3.2GHz D0 Bloomfield 45nm Asus P6T6 WS Revolution X58 LGA 1366 eVGA Nvidia GeForce GTX 780 Ti SC ACX 3.0GB DDR5 Corsair Dominator GT DDR3 1600 6GB (7-7-7-20) 
Hard DriveHard DriveHard DriveHard Drive
WDC VelociRaptor 300GB SATAII WDC Caviar Black 2TB SATAII WDC Caviar Black 1TB SATAII WDC Caviar Black 1TB SATAII 
Optical DriveOptical DriveCoolingOS
Asus BW-12B1ST CD-RW/DVD-RW/BD-R Asus BW-12B1ST CD-RW/DVD-RW/BD-R Scythe 140mm & Corsair 120/140mm Blue LED Windows 7 Ultimate 64-bit 
MonitorMonitorKeyboardPower
LG 27MP68VQ-P 27" 1920 x 1080 60Hz IPS LED LG 27MP68VQ-P 27" 1920 x 1080 60Hz IPS LED Logitech G810 Orion Spectrum Corsair HX850W PSU Professional Series 
CaseMouseMouse PadAudio
Corsair Obsidian 800D with SilverStone AEROSLOTS Logitech G502 Proteus Spectrum SteelSeries 4HD Onboard SoundMax HD 8 Channel ADI AD2000B 
AudioAudioOther
Logitech X-540 5.1 Speaker System Razer Megalodon 7.1 Headset Razer Onza Tournament Edition Xbox 360/PC Contr... 
  hide details  
Reply
The X58
(23 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 960 @ 3.2GHz D0 Bloomfield 45nm Asus P6T6 WS Revolution X58 LGA 1366 eVGA Nvidia GeForce GTX 780 Ti SC ACX 3.0GB DDR5 Corsair Dominator GT DDR3 1600 6GB (7-7-7-20) 
Hard DriveHard DriveHard DriveHard Drive
WDC VelociRaptor 300GB SATAII WDC Caviar Black 2TB SATAII WDC Caviar Black 1TB SATAII WDC Caviar Black 1TB SATAII 
Optical DriveOptical DriveCoolingOS
Asus BW-12B1ST CD-RW/DVD-RW/BD-R Asus BW-12B1ST CD-RW/DVD-RW/BD-R Scythe 140mm & Corsair 120/140mm Blue LED Windows 7 Ultimate 64-bit 
MonitorMonitorKeyboardPower
LG 27MP68VQ-P 27" 1920 x 1080 60Hz IPS LED LG 27MP68VQ-P 27" 1920 x 1080 60Hz IPS LED Logitech G810 Orion Spectrum Corsair HX850W PSU Professional Series 
CaseMouseMouse PadAudio
Corsair Obsidian 800D with SilverStone AEROSLOTS Logitech G502 Proteus Spectrum SteelSeries 4HD Onboard SoundMax HD 8 Channel ADI AD2000B 
AudioAudioOther
Logitech X-540 5.1 Speaker System Razer Megalodon 7.1 Headset Razer Onza Tournament Edition Xbox 360/PC Contr... 
  hide details  
Reply

Gear mentioned in this thread:

post #42 of 48
Thread Starter 
Quote:
Originally Posted by SirWaWa View Post

that is a tight setup
mine are 2 slots apart
i got the backplates on mine



SirWaWa, how were you able to get Cas 7 in ur ddr 3 ???

can u please help me ? is it on t1 or t2 ?
What kind of ram is it ?? NICENESS biggrin.gif

Quote:
Originally Posted by Scorpion49 View Post

Quote:
Originally Posted by thiagocosta85 View Post

The cpu Stock = 3.4
It is overclocked to 4.1
The card's fan = Auto, if I leave it alone it will stay at 40 ~ 60 %,
So I up it to 90% when I play battlefield 3.
Do you recommend anything specific ? do you think the results were fair ?

Your results are quite good, I would run a custom fan profile starting at say 40% at 40*C and increasing to 100% at say 85*C just to be safe. With those kind of confines on the card its going to be a little noisy but it will work fine. I think your 580 SLi is faster than mine at stock clocks, actually.



hey Scorpion, Yeah I have been playing arround with the fan speeds, I will just have 2 setups, 1 for normal, 1 for gamming..

When I want to game, I will turn PCI fan UP (blows directly between 2 video cards) and the card's fan up...

As long as the GPU's stay below 90Fº, I will find myself to be @ long run SAFE...

By the way, is EVGA good ? ...

I didnt think I was getting EVGA but I did.. LOL..

Is EVGA good ? ... The last EVGA card I had blew up in 4 years (Geforce 7950 GX2) << I loved that card, it was SUPEr("GX2")
Edited by thiagocosta85 - 2/2/12 at 3:17pm
Super Athlon
(13 items)
 
Ultra Intel
(14 items)
 
 
CPUMotherboardGraphicsRAM
Athlon 64 FX-62 Windsor GIGABYTE GA-M59SLI-S5 AM2 ATI RADEON HD 5770 SUPER TALENT 4GB (4 x 1GB) 240-Pin DDR2 800 
Hard DriveOSMonitorKeyboard
SCSI 15000 RPM OS + 250GB 7200 SATA II Linux 9.10 Karmic Kaola EMPTY ATM Saitek Ultra 
PowerCaseMouseMouse Pad
750W cheap one Custom Made DYNEX DELL 
CPUMotherboardGraphicsRAM
Intel I7 2600K S 1155 046MHW 1 x GTX 980 8GB DDR3 Cas9 1866Mhz 
Hard DriveHard DriveCoolingOS
2x Vertex 3 Raid 0 2x TB Raid 0 Hitachi Storage Hydro H70 7 Ultimage + Linux Gutsy 7.10 
MonitorKeyboardPowerCase
VX2268WM Saitek Ultra 875 WATTS Alien Aurora R3 Modded 
MouseMouse Pad
G9X Xtrac RIPPER 
CPUMotherboardGraphicsRAM
PHENOM II X4 955 4.0 GHZ 790FX-GD70 GTX 480 8192 
Hard DriveOSMonitorKeyboard
2 SSD Vertex 2 @ Raid 0. 2 250HDD's @ Raid 0 1 350 Linux 7.10 Gutsy + Windows 7 Ultimate 64 Samsung 21.5 Saitek Ultra 
PowerCaseMouseMouse Pad
Thermaltake Black Widow W0319RU 850W ATX 12V v2.3 Thermaltake Armor A90 Black Steel DYNEX DELL 
  hide details  
Reply
Super Athlon
(13 items)
 
Ultra Intel
(14 items)
 
 
CPUMotherboardGraphicsRAM
Athlon 64 FX-62 Windsor GIGABYTE GA-M59SLI-S5 AM2 ATI RADEON HD 5770 SUPER TALENT 4GB (4 x 1GB) 240-Pin DDR2 800 
Hard DriveOSMonitorKeyboard
SCSI 15000 RPM OS + 250GB 7200 SATA II Linux 9.10 Karmic Kaola EMPTY ATM Saitek Ultra 
PowerCaseMouseMouse Pad
750W cheap one Custom Made DYNEX DELL 
CPUMotherboardGraphicsRAM
Intel I7 2600K S 1155 046MHW 1 x GTX 980 8GB DDR3 Cas9 1866Mhz 
Hard DriveHard DriveCoolingOS
2x Vertex 3 Raid 0 2x TB Raid 0 Hitachi Storage Hydro H70 7 Ultimage + Linux Gutsy 7.10 
MonitorKeyboardPowerCase
VX2268WM Saitek Ultra 875 WATTS Alien Aurora R3 Modded 
MouseMouse Pad
G9X Xtrac RIPPER 
CPUMotherboardGraphicsRAM
PHENOM II X4 955 4.0 GHZ 790FX-GD70 GTX 480 8192 
Hard DriveOSMonitorKeyboard
2 SSD Vertex 2 @ Raid 0. 2 250HDD's @ Raid 0 1 350 Linux 7.10 Gutsy + Windows 7 Ultimate 64 Samsung 21.5 Saitek Ultra 
PowerCaseMouseMouse Pad
Thermaltake Black Widow W0319RU 850W ATX 12V v2.3 Thermaltake Armor A90 Black Steel DYNEX DELL 
  hide details  
Reply
post #43 of 48
Quote:
Originally Posted by thiagocosta85 View Post

SirWaWa, how were you able to get Cas 7 in ur ddr 3 ???
can u please help me ? is it on t1 or t2 ?
What kind of ram is it ?? NICENESS biggrin.gif
hey Scorpion, Yeah I have been playing arround with the fan speeds, I will just have 2 setups, 1 for normal, 1 for gamming..
When I want to game, I will turn PCI fan UP (blows directly between 2 video cards) and the card's fan up...
As long as the GPU's stay below 90Fº, I will find myself to be @ long run SAFE...
By the way, is EVGA good ? ...
I didnt think I was getting EVGA but I did.. LOL..
Is EVGA good ? ... The last EVGA card I had blew up in 4 years (Geforce 7950 GX2) << I loved that card, it was SUPEr("GX2")

EVGA is one of the better brands. They have very good support and warranty as long as you are the first owner of the cards. I've had several EVGA cards and they were fine.
post #44 of 48
Thread Starter 
biggrin.gif thanks man ... EVGA FTW !! biggrin.gif
Super Athlon
(13 items)
 
Ultra Intel
(14 items)
 
 
CPUMotherboardGraphicsRAM
Athlon 64 FX-62 Windsor GIGABYTE GA-M59SLI-S5 AM2 ATI RADEON HD 5770 SUPER TALENT 4GB (4 x 1GB) 240-Pin DDR2 800 
Hard DriveOSMonitorKeyboard
SCSI 15000 RPM OS + 250GB 7200 SATA II Linux 9.10 Karmic Kaola EMPTY ATM Saitek Ultra 
PowerCaseMouseMouse Pad
750W cheap one Custom Made DYNEX DELL 
CPUMotherboardGraphicsRAM
Intel I7 2600K S 1155 046MHW 1 x GTX 980 8GB DDR3 Cas9 1866Mhz 
Hard DriveHard DriveCoolingOS
2x Vertex 3 Raid 0 2x TB Raid 0 Hitachi Storage Hydro H70 7 Ultimage + Linux Gutsy 7.10 
MonitorKeyboardPowerCase
VX2268WM Saitek Ultra 875 WATTS Alien Aurora R3 Modded 
MouseMouse Pad
G9X Xtrac RIPPER 
CPUMotherboardGraphicsRAM
PHENOM II X4 955 4.0 GHZ 790FX-GD70 GTX 480 8192 
Hard DriveOSMonitorKeyboard
2 SSD Vertex 2 @ Raid 0. 2 250HDD's @ Raid 0 1 350 Linux 7.10 Gutsy + Windows 7 Ultimate 64 Samsung 21.5 Saitek Ultra 
PowerCaseMouseMouse Pad
Thermaltake Black Widow W0319RU 850W ATX 12V v2.3 Thermaltake Armor A90 Black Steel DYNEX DELL 
  hide details  
Reply
Super Athlon
(13 items)
 
Ultra Intel
(14 items)
 
 
CPUMotherboardGraphicsRAM
Athlon 64 FX-62 Windsor GIGABYTE GA-M59SLI-S5 AM2 ATI RADEON HD 5770 SUPER TALENT 4GB (4 x 1GB) 240-Pin DDR2 800 
Hard DriveOSMonitorKeyboard
SCSI 15000 RPM OS + 250GB 7200 SATA II Linux 9.10 Karmic Kaola EMPTY ATM Saitek Ultra 
PowerCaseMouseMouse Pad
750W cheap one Custom Made DYNEX DELL 
CPUMotherboardGraphicsRAM
Intel I7 2600K S 1155 046MHW 1 x GTX 980 8GB DDR3 Cas9 1866Mhz 
Hard DriveHard DriveCoolingOS
2x Vertex 3 Raid 0 2x TB Raid 0 Hitachi Storage Hydro H70 7 Ultimage + Linux Gutsy 7.10 
MonitorKeyboardPowerCase
VX2268WM Saitek Ultra 875 WATTS Alien Aurora R3 Modded 
MouseMouse Pad
G9X Xtrac RIPPER 
CPUMotherboardGraphicsRAM
PHENOM II X4 955 4.0 GHZ 790FX-GD70 GTX 480 8192 
Hard DriveOSMonitorKeyboard
2 SSD Vertex 2 @ Raid 0. 2 250HDD's @ Raid 0 1 350 Linux 7.10 Gutsy + Windows 7 Ultimate 64 Samsung 21.5 Saitek Ultra 
PowerCaseMouseMouse Pad
Thermaltake Black Widow W0319RU 850W ATX 12V v2.3 Thermaltake Armor A90 Black Steel DYNEX DELL 
  hide details  
Reply
post #45 of 48
Quote:
Originally Posted by thiagocosta85 View Post

biggrin.gif thanks man ... EVGA FTW !! biggrin.gif

I like my EVGA 580's, I'm just sad that my water blocks makes me unable to use the EVGA backplates I got to go with them.
post #46 of 48
Quote:
Originally Posted by thiagocosta85 View Post

SirWaWa, how were you able to get Cas 7 in ur ddr 3 ???
can u please help me ? is it on t1 or t2 ?
What kind of ram is it ?? NICENESS biggrin.gif
hey Scorpion, Yeah I have been playing arround with the fan speeds, I will just have 2 setups, 1 for normal, 1 for gamming..
When I want to game, I will turn PCI fan UP (blows directly between 2 video cards) and the card's fan up...
As long as the GPU's stay below 90Fº, I will find myself to be @ long run SAFE...
By the way, is EVGA good ? ...
I didnt think I was getting EVGA but I did.. LOL..
Is EVGA good ? ... The last EVGA card I had blew up in 4 years (Geforce 7950 GX2) << I loved that card, it was SUPEr("GX2")

its the corsair dominator gt's cmg6gx3m3a1600c7 (it's been discontinued for a long time)
the remaining last when back in the day they made ram with really tight timings but only limited to 1600 (unless u overclock more)
I used the XMP profile though the bios and undervolted to 1.56v instead of 1.65v
I believe it's t2
no other tweaking is done
nowdays it's all loose timing ram
The X58
(23 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 960 @ 3.2GHz D0 Bloomfield 45nm Asus P6T6 WS Revolution X58 LGA 1366 eVGA Nvidia GeForce GTX 780 Ti SC ACX 3.0GB DDR5 Corsair Dominator GT DDR3 1600 6GB (7-7-7-20) 
Hard DriveHard DriveHard DriveHard Drive
WDC VelociRaptor 300GB SATAII WDC Caviar Black 2TB SATAII WDC Caviar Black 1TB SATAII WDC Caviar Black 1TB SATAII 
Optical DriveOptical DriveCoolingOS
Asus BW-12B1ST CD-RW/DVD-RW/BD-R Asus BW-12B1ST CD-RW/DVD-RW/BD-R Scythe 140mm & Corsair 120/140mm Blue LED Windows 7 Ultimate 64-bit 
MonitorMonitorKeyboardPower
LG 27MP68VQ-P 27" 1920 x 1080 60Hz IPS LED LG 27MP68VQ-P 27" 1920 x 1080 60Hz IPS LED Logitech G810 Orion Spectrum Corsair HX850W PSU Professional Series 
CaseMouseMouse PadAudio
Corsair Obsidian 800D with SilverStone AEROSLOTS Logitech G502 Proteus Spectrum SteelSeries 4HD Onboard SoundMax HD 8 Channel ADI AD2000B 
AudioAudioOther
Logitech X-540 5.1 Speaker System Razer Megalodon 7.1 Headset Razer Onza Tournament Edition Xbox 360/PC Contr... 
  hide details  
Reply
The X58
(23 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 960 @ 3.2GHz D0 Bloomfield 45nm Asus P6T6 WS Revolution X58 LGA 1366 eVGA Nvidia GeForce GTX 780 Ti SC ACX 3.0GB DDR5 Corsair Dominator GT DDR3 1600 6GB (7-7-7-20) 
Hard DriveHard DriveHard DriveHard Drive
WDC VelociRaptor 300GB SATAII WDC Caviar Black 2TB SATAII WDC Caviar Black 1TB SATAII WDC Caviar Black 1TB SATAII 
Optical DriveOptical DriveCoolingOS
Asus BW-12B1ST CD-RW/DVD-RW/BD-R Asus BW-12B1ST CD-RW/DVD-RW/BD-R Scythe 140mm & Corsair 120/140mm Blue LED Windows 7 Ultimate 64-bit 
MonitorMonitorKeyboardPower
LG 27MP68VQ-P 27" 1920 x 1080 60Hz IPS LED LG 27MP68VQ-P 27" 1920 x 1080 60Hz IPS LED Logitech G810 Orion Spectrum Corsair HX850W PSU Professional Series 
CaseMouseMouse PadAudio
Corsair Obsidian 800D with SilverStone AEROSLOTS Logitech G502 Proteus Spectrum SteelSeries 4HD Onboard SoundMax HD 8 Channel ADI AD2000B 
AudioAudioOther
Logitech X-540 5.1 Speaker System Razer Megalodon 7.1 Headset Razer Onza Tournament Edition Xbox 360/PC Contr... 
  hide details  
Reply
post #47 of 48
Thread Starter 
wow I am impressed... Cas 7 in dd3 must make a huge difference... im running at Cas 9 now. :'(
Super Athlon
(13 items)
 
Ultra Intel
(14 items)
 
 
CPUMotherboardGraphicsRAM
Athlon 64 FX-62 Windsor GIGABYTE GA-M59SLI-S5 AM2 ATI RADEON HD 5770 SUPER TALENT 4GB (4 x 1GB) 240-Pin DDR2 800 
Hard DriveOSMonitorKeyboard
SCSI 15000 RPM OS + 250GB 7200 SATA II Linux 9.10 Karmic Kaola EMPTY ATM Saitek Ultra 
PowerCaseMouseMouse Pad
750W cheap one Custom Made DYNEX DELL 
CPUMotherboardGraphicsRAM
Intel I7 2600K S 1155 046MHW 1 x GTX 980 8GB DDR3 Cas9 1866Mhz 
Hard DriveHard DriveCoolingOS
2x Vertex 3 Raid 0 2x TB Raid 0 Hitachi Storage Hydro H70 7 Ultimage + Linux Gutsy 7.10 
MonitorKeyboardPowerCase
VX2268WM Saitek Ultra 875 WATTS Alien Aurora R3 Modded 
MouseMouse Pad
G9X Xtrac RIPPER 
CPUMotherboardGraphicsRAM
PHENOM II X4 955 4.0 GHZ 790FX-GD70 GTX 480 8192 
Hard DriveOSMonitorKeyboard
2 SSD Vertex 2 @ Raid 0. 2 250HDD's @ Raid 0 1 350 Linux 7.10 Gutsy + Windows 7 Ultimate 64 Samsung 21.5 Saitek Ultra 
PowerCaseMouseMouse Pad
Thermaltake Black Widow W0319RU 850W ATX 12V v2.3 Thermaltake Armor A90 Black Steel DYNEX DELL 
  hide details  
Reply
Super Athlon
(13 items)
 
Ultra Intel
(14 items)
 
 
CPUMotherboardGraphicsRAM
Athlon 64 FX-62 Windsor GIGABYTE GA-M59SLI-S5 AM2 ATI RADEON HD 5770 SUPER TALENT 4GB (4 x 1GB) 240-Pin DDR2 800 
Hard DriveOSMonitorKeyboard
SCSI 15000 RPM OS + 250GB 7200 SATA II Linux 9.10 Karmic Kaola EMPTY ATM Saitek Ultra 
PowerCaseMouseMouse Pad
750W cheap one Custom Made DYNEX DELL 
CPUMotherboardGraphicsRAM
Intel I7 2600K S 1155 046MHW 1 x GTX 980 8GB DDR3 Cas9 1866Mhz 
Hard DriveHard DriveCoolingOS
2x Vertex 3 Raid 0 2x TB Raid 0 Hitachi Storage Hydro H70 7 Ultimage + Linux Gutsy 7.10 
MonitorKeyboardPowerCase
VX2268WM Saitek Ultra 875 WATTS Alien Aurora R3 Modded 
MouseMouse Pad
G9X Xtrac RIPPER 
CPUMotherboardGraphicsRAM
PHENOM II X4 955 4.0 GHZ 790FX-GD70 GTX 480 8192 
Hard DriveOSMonitorKeyboard
2 SSD Vertex 2 @ Raid 0. 2 250HDD's @ Raid 0 1 350 Linux 7.10 Gutsy + Windows 7 Ultimate 64 Samsung 21.5 Saitek Ultra 
PowerCaseMouseMouse Pad
Thermaltake Black Widow W0319RU 850W ATX 12V v2.3 Thermaltake Armor A90 Black Steel DYNEX DELL 
  hide details  
Reply
post #48 of 48
either try to find a way to get it to work at CAS 7 or find a kit that is guaranteed to run at that (even guaranteed kits may not work) for whatever reason but it should, but it's unlikely you'll find a kit as tight as CAS 7 at decent speeds, those are long gone and no one seems to be making them no more
The X58
(23 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 960 @ 3.2GHz D0 Bloomfield 45nm Asus P6T6 WS Revolution X58 LGA 1366 eVGA Nvidia GeForce GTX 780 Ti SC ACX 3.0GB DDR5 Corsair Dominator GT DDR3 1600 6GB (7-7-7-20) 
Hard DriveHard DriveHard DriveHard Drive
WDC VelociRaptor 300GB SATAII WDC Caviar Black 2TB SATAII WDC Caviar Black 1TB SATAII WDC Caviar Black 1TB SATAII 
Optical DriveOptical DriveCoolingOS
Asus BW-12B1ST CD-RW/DVD-RW/BD-R Asus BW-12B1ST CD-RW/DVD-RW/BD-R Scythe 140mm & Corsair 120/140mm Blue LED Windows 7 Ultimate 64-bit 
MonitorMonitorKeyboardPower
LG 27MP68VQ-P 27" 1920 x 1080 60Hz IPS LED LG 27MP68VQ-P 27" 1920 x 1080 60Hz IPS LED Logitech G810 Orion Spectrum Corsair HX850W PSU Professional Series 
CaseMouseMouse PadAudio
Corsair Obsidian 800D with SilverStone AEROSLOTS Logitech G502 Proteus Spectrum SteelSeries 4HD Onboard SoundMax HD 8 Channel ADI AD2000B 
AudioAudioOther
Logitech X-540 5.1 Speaker System Razer Megalodon 7.1 Headset Razer Onza Tournament Edition Xbox 360/PC Contr... 
  hide details  
Reply
The X58
(23 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 960 @ 3.2GHz D0 Bloomfield 45nm Asus P6T6 WS Revolution X58 LGA 1366 eVGA Nvidia GeForce GTX 780 Ti SC ACX 3.0GB DDR5 Corsair Dominator GT DDR3 1600 6GB (7-7-7-20) 
Hard DriveHard DriveHard DriveHard Drive
WDC VelociRaptor 300GB SATAII WDC Caviar Black 2TB SATAII WDC Caviar Black 1TB SATAII WDC Caviar Black 1TB SATAII 
Optical DriveOptical DriveCoolingOS
Asus BW-12B1ST CD-RW/DVD-RW/BD-R Asus BW-12B1ST CD-RW/DVD-RW/BD-R Scythe 140mm & Corsair 120/140mm Blue LED Windows 7 Ultimate 64-bit 
MonitorMonitorKeyboardPower
LG 27MP68VQ-P 27" 1920 x 1080 60Hz IPS LED LG 27MP68VQ-P 27" 1920 x 1080 60Hz IPS LED Logitech G810 Orion Spectrum Corsair HX850W PSU Professional Series 
CaseMouseMouse PadAudio
Corsair Obsidian 800D with SilverStone AEROSLOTS Logitech G502 Proteus Spectrum SteelSeries 4HD Onboard SoundMax HD 8 Channel ADI AD2000B 
AudioAudioOther
Logitech X-540 5.1 Speaker System Razer Megalodon 7.1 Headset Razer Onza Tournament Edition Xbox 360/PC Contr... 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: NVIDIA

Gear mentioned in this thread:

Overclock.net › Forums › Graphics Cards › NVIDIA › Upgrade from GTX460's SLI to 580SLI Question