Overclock.net › Forums › Components › Power Supplies › i7 2600k Build PSU wattage?
New Posts  All Forums:Forum Nav:

i7 2600k Build PSU wattage? - Page 2

post #11 of 18
850W is the minimum I'd go with for SLI 480's. Anything but 480's, 750W is fine, but the 480's ... they are some hogs. Had them for a bit, and at 850c/1.1V they did impose of bit of voltage droop on the 12V rail of my 850W when running something like Furmark.

Honestly if you're going to watercool and heavily overclock, 1000W is not a bad idea, and is FOR SURE plenty of juice ... no need for the 1.2KW at all. Most good 1K units will even do tri-SLI 480's okay.

Then again, there's kinda a couple of 1200W units that are real nice I quite like the Silverstone 1.2KW, and Quattro 1.2KW PSU's quite a bit, both are far better units than the 1KW units in their line.
    
CPUMotherboardGraphicsRAM
xeon X5675 6-core @ 4.1ghz (1.29v, 20x205 +ht ) rampage iii extreme msi rx470 gaming X (the $159 budget king) 3 x 2gb corsair xms3 pc12800 (9-9-9-24-1T@1600MHz) 
Hard DriveOptical DriveCoolingOS
hynix 250gb ssd (boot), 2tb deskstar (apps),1tb... plextor px-712sa - still the best optical drive... corsair h8o v2 aio W10 home 
MonitorPowerCaseAudio
asus vw266h 25.5" (1920x1200) abs sl (enermax revolution) * single 70A rail 850w silverstone rv-03 XFi Titanium 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
xeon X5675 6-core @ 4.1ghz (1.29v, 20x205 +ht ) rampage iii extreme msi rx470 gaming X (the $159 budget king) 3 x 2gb corsair xms3 pc12800 (9-9-9-24-1T@1600MHz) 
Hard DriveOptical DriveCoolingOS
hynix 250gb ssd (boot), 2tb deskstar (apps),1tb... plextor px-712sa - still the best optical drive... corsair h8o v2 aio W10 home 
MonitorPowerCaseAudio
asus vw266h 25.5" (1920x1200) abs sl (enermax revolution) * single 70A rail 850w silverstone rv-03 XFi Titanium 
  hide details  
Reply
post #12 of 18
Thread Starter 
Thanks for the replies guys.

I guess it will be a 1000W then

Lastly anyone know a good quality water cooling unit? Reply in this thread here: http://www.overclock.net/air-cooling...l#post13487711
Aurora
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 930 Asus Rampage ii Extreme Nvidia GTX 570 Direct CU II 12GiB 
Hard DriveOptical DriveOSKeyboard
Primary: 1TiB WD Caviar Black Some Asus one Windows 7 Pro 64-bit OEM Razer Black Widow Ultimate 
PowerCaseMouseMouse Pad
Corsair TX 850W Thermaltake Element V Logitech G9 Razer eXactMat X Speed 
  hide details  
Reply
Aurora
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 930 Asus Rampage ii Extreme Nvidia GTX 570 Direct CU II 12GiB 
Hard DriveOptical DriveOSKeyboard
Primary: 1TiB WD Caviar Black Some Asus one Windows 7 Pro 64-bit OEM Razer Black Widow Ultimate 
PowerCaseMouseMouse Pad
Corsair TX 850W Thermaltake Element V Logitech G9 Razer eXactMat X Speed 
  hide details  
Reply
post #13 of 18
Quote:
Originally Posted by Fluidz View Post
since the genuine rule of thumb is don't use above 80% the only choice would be 1200W and I have seen people with quad SLI, water cooling, 500LEDs, 4000 Fans that don't use 1.2K PSUs.
That "rule" is made up and heavily incorrect, and calculators usually overestimate the amount of watts you need. 850W is ample for two GTX 480's.

Quote:
Originally Posted by brettjv View Post
850W is the minimum I'd go with for SLI 480's. Anything but 480's, 750W is fine, but the 480's ... they are some hogs. Had them for a bit, and at 850c/1.1V they did impose of bit of voltage droop on the 12V rail of my 850W when running something like Furmark.
But what did you test the voltage drop with, and did it go out of spec? There's something wrong with your 850w if it cant handle GTX 480 SLI Furmark load (especially if that was without Prime/LinX aswell).
Edited by GameBoy - 5/13/11 at 2:31am
Rig
(9 items)
 
  
CPUMotherboardGraphicsRAM
5820k ga-x99-sli gigabyte 7970 wf 16gb 4x4 lpx 
Hard DriveCoolingPowerCase
samsung 830 128gb ven x/gt ap-15 evga g2 650w corsair 450d 
Audio
jbl lsr305 
  hide details  
Reply
Rig
(9 items)
 
  
CPUMotherboardGraphicsRAM
5820k ga-x99-sli gigabyte 7970 wf 16gb 4x4 lpx 
Hard DriveCoolingPowerCase
samsung 830 128gb ven x/gt ap-15 evga g2 650w corsair 450d 
Audio
jbl lsr305 
  hide details  
Reply
post #14 of 18
Thread Starter 
Quote:
Originally Posted by GameBoy View Post
That "rule" is made up and heavily incorrect, and calculators usually overestimate the amount of watts you need. 850W is ample for two GTX 480's.
Is there a better guideline then? In terms of how much you should safely use on your PSU?

The 80% makes sense in case anything draws anymore power :S
Aurora
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 930 Asus Rampage ii Extreme Nvidia GTX 570 Direct CU II 12GiB 
Hard DriveOptical DriveOSKeyboard
Primary: 1TiB WD Caviar Black Some Asus one Windows 7 Pro 64-bit OEM Razer Black Widow Ultimate 
PowerCaseMouseMouse Pad
Corsair TX 850W Thermaltake Element V Logitech G9 Razer eXactMat X Speed 
  hide details  
Reply
Aurora
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 930 Asus Rampage ii Extreme Nvidia GTX 570 Direct CU II 12GiB 
Hard DriveOptical DriveOSKeyboard
Primary: 1TiB WD Caviar Black Some Asus one Windows 7 Pro 64-bit OEM Razer Black Widow Ultimate 
PowerCaseMouseMouse Pad
Corsair TX 850W Thermaltake Element V Logitech G9 Razer eXactMat X Speed 
  hide details  
Reply
post #15 of 18
you should be fine with 700watts but they the higher the better for future upgrades if your not on a budget
Black
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 3770k @4.8 Asus Maixums V Formula Evga 970FTW 4GB G.Skill 16GB 1866MHZ 8-9-9-24 
Hard DriveCoolingOSMonitor
Samsung 840pro 128GB XSPC RX360 W7 Samsung SyncMaster T260HD 
KeyboardPowerCaseMouse
Logitech G19 Corsair TX850M Corsair 800D Logitech G303 
Mouse PadAudio
Mionix Propus360 Creative X-Fi Titanium HD 
  hide details  
Reply
Black
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 3770k @4.8 Asus Maixums V Formula Evga 970FTW 4GB G.Skill 16GB 1866MHZ 8-9-9-24 
Hard DriveCoolingOSMonitor
Samsung 840pro 128GB XSPC RX360 W7 Samsung SyncMaster T260HD 
KeyboardPowerCaseMouse
Logitech G19 Corsair TX850M Corsair 800D Logitech G303 
Mouse PadAudio
Mionix Propus360 Creative X-Fi Titanium HD 
  hide details  
Reply
post #16 of 18
I'd go with a 1000W just to be safe. Especially you you plan to OC those GTX480s! Your PSU will run more efficient if it has some headroom saving abit on your electricity bill.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 980X 4.8GHz @1.44V Gigabyte X58A UD5 rev 2.0 GTX580 Lightning 3x2GB Dominator GTs C8 
Hard DriveOSMonitorKeyboard
C300 256GB SSD + WD750 Caviar Black Windows 7 64bit Home Premium DELL U2410 Razer Tarantula 
PowerCaseMouse
Corsair Gold AX1200 Lian Li Habu 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 980X 4.8GHz @1.44V Gigabyte X58A UD5 rev 2.0 GTX580 Lightning 3x2GB Dominator GTs C8 
Hard DriveOSMonitorKeyboard
C300 256GB SSD + WD750 Caviar Black Windows 7 64bit Home Premium DELL U2410 Razer Tarantula 
PowerCaseMouse
Corsair Gold AX1200 Lian Li Habu 
  hide details  
Reply
post #17 of 18
750w
post #18 of 18
Quote:
Originally Posted by Fluidz View Post
Is there a better guideline then? In terms of how much you should safely use on your PSU?

The 80% makes sense in case anything draws anymore power :S
Though it depends on the unit, I wouldn't run an average/mediocre PSU at maximum for extended periods of time, however any good/great PSU you buy will be able to run at maximum capacity with zero problems.

Quote:
Originally Posted by YerMother View Post
I'd go with a 1000W just to be safe. Especially you you plan to OC those GTX480s! Your PSU will run more efficient if it has some headroom saving abit on your electricity bill.
Whether he gets better efficiency or not depends on a lot of things, and anyway, the amount you'll save on your electricity bill will be negligible (couple of cents each month, if you're lucky). He would be wasting money by going with a 1000w.
Edited by GameBoy - 5/13/11 at 5:24am
Rig
(9 items)
 
  
CPUMotherboardGraphicsRAM
5820k ga-x99-sli gigabyte 7970 wf 16gb 4x4 lpx 
Hard DriveCoolingPowerCase
samsung 830 128gb ven x/gt ap-15 evga g2 650w corsair 450d 
Audio
jbl lsr305 
  hide details  
Reply
Rig
(9 items)
 
  
CPUMotherboardGraphicsRAM
5820k ga-x99-sli gigabyte 7970 wf 16gb 4x4 lpx 
Hard DriveCoolingPowerCase
samsung 830 128gb ven x/gt ap-15 evga g2 650w corsair 450d 
Audio
jbl lsr305 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Power Supplies
Overclock.net › Forums › Components › Power Supplies › i7 2600k Build PSU wattage?