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Want to upgrade to 6990/Sandybridge. Will I need a new PSU?

post #1 of 7
Thread Starter 
Tax time is upon us, and I've got a nice refund coming back. I've decided to upgrade to a 6990, despite only running a resolution of 1920 x 1080. However, I'm curious if I'll need a new PSU.

Here are my PSU's stats:



From AMD:

Quote:
750W Watt or greater power supply with two 150W 8-pin PCI Express® power connectors recommended (1000W and four 8-pin connectors recommended for AMD CrossFireX™ technology in dual mode. 1200W recommended for optimal performance).
I'm under the mark, but considering I will be running:

1) Water Cooling Pump
2) i7 2600K (overclocked to ideally 4.5ghz at 1.45v max)
3) An Intel SSD, and 2 1TB SATA HD, a DVD-R Drive, 5 case fans, and a Cold Cathode Light
4) 2x 4GB DDR3 1600
4) I'll want to overclock the GPU

I'm thinking that it is not going to cut it, but I'm going to leave it to the experts. Ideally I'll want to upgrade the power supply, but budget constraints would make this build postponed til' I can sell off existing build.

If upgrading the PSU is required, do you think keeping the i7 950 setup would bottleneck the performance of the 6990? Or should I go Sandybridge, but get 2x 6950s instead?

TL;DR - Should this work out?
post #2 of 7
That one is plenty good..
Problem Child
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Alienbuild1
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Mushkin 120 SSD WD 1TB Asus 24x XSPC Raystorm 
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EK mobo waterblocks W7 Ultimate HP LA2205wg x 3 Antec 1000 TPQ 
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NZXT Switch 810 
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i5 760 4.0@1.26v MSI P55-GD80 GTX 460 G.Skill 4x2gb ddr3 1600 
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WD 840gb Asus 24x H100i W7 Ultimate 
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Raidmax RX630Z Logisys Case 51 
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Problem Child
(13 items)
 
TROUBLEMAKER
(14 items)
 
Alienbuild1
(13 items)
 
CPUMotherboardGraphicsRAM
i7 3930k Asus Rampage IV Extreme 7970 G.Skill 16g 1600 
Hard DriveHard DriveOptical DriveCooling
Mushkin 120 SSD WD 1TB Asus 24x XSPC Raystorm 
CoolingOSMonitorPower
EK mobo waterblocks W7 Ultimate HP LA2205wg x 3 Antec 1000 TPQ 
Case
NZXT Switch 810 
CPUMotherboardGraphicsRAM
i5 760 4.0@1.26v MSI P55-GD80 GTX 460 G.Skill 4x2gb ddr3 1600 
Hard DriveOptical DriveCoolingOS
WD 840gb Asus 24x H100i W7 Ultimate 
MonitorKeyboardPowerCase
HP LA2205wg  HP  1000 w Antec Lanboy Air 
Mouse
Microsoft Arc 
CPUMotherboardGraphicsRAM
Phenom II 955 C3 ma790x-ud4p Radeon HD 5770 OC OCZ 800 4x2gb 
Hard DriveOptical DriveOSMonitor
2-500gb WD Caviar Blue raid0 LG Super Multi 24x, Asus 24x Windows 7 Ultimate 64 LG 23" 
PowerCase
Raidmax RX630Z Logisys Case 51 
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post #3 of 7
Thread Starter 
Just an update - this power supply can't hold the job. Any time I start a game computer instantly crashes. Guess I'll have to wait a couple days for a new PSU.
post #4 of 7
I would expect nothing less than 1000W for your setup,maybe 1200W so you can get another 6990 for insane framerates
Apex Predator
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2xOCZ Vertex 4 256gb in Raid0,2x WDC Black 2TB ... LG 22x DVD-RW x2,Sony BDU 10S BD-ROM Alphacool monsta 360 WaterCooling close loop Windows 7 Ultimate X64 
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Apex Predator
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CPUMotherboardGraphicsRAM
Core i7 5960K@4.5GHz@1.425v Asus Rampage V Extreme 3x Asus GTX980 Ti Strix 4GB TRI SLI G-SkillRipjaws 4 DDR4 2666CL15 8x4GB 
Hard DriveOptical DriveCoolingOS
2xOCZ Vertex 4 256gb in Raid0,2x WDC Black 2TB ... LG 22x DVD-RW x2,Sony BDU 10S BD-ROM Alphacool monsta 360 WaterCooling close loop Windows 7 Ultimate X64 
MonitorKeyboardPowerCase
3x Asus VG278H 27 inch Nvidia 3D Vision 2 LED M... Ducky shine 3 blue switch rgb led Enermax Platimax 1500W 80+ Platinum Corsair 900D 
MouseMouse PadAudioOther
Corsair M90 Razer Manticore Asus Xonar D2X Yamaha CX-A5000/MX-A5000 6x AR80 TG Floor stand... 
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post #5 of 7
that's weird, 800w should be fine
Little Ceaser
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Little Ceaser
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel 4790k Z97X-Gaming 3 ASUS GTX970 STRIX Kingston HyperX Fury  
Hard DriveHard DriveHard DriveOptical Drive
Intel 320 SSD WD blue 500GB WD black 500GB non 
CoolingOSMonitorKeyboard
Corsair H80i GT Windows 8.1 Wacom cintiq 22HD Razer Blackwidow tourment edition  
PowerCaseMouseMouse Pad
Gigabyte Powerock AX500 NZXT Source 340 Logitech G300 Razer golithos 
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post #6 of 7
Must be a bad PSU, 800W is PLENTY.
post #7 of 7
derp misread

but 800 is enough, dont need 1000w. That is only if he were to get another 6990.
Tardis
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C300 64GB SSD - 500GB HDD - 840 250GB SSD Windows 7 Ultimate 64bit 3 HP LA2405wg 24'' 1920x1200 @5760x1200 Corsair 850watts 
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Tardis
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Hard DriveOSMonitorPower
C300 64GB SSD - 500GB HDD - 840 250GB SSD Windows 7 Ultimate 64bit 3 HP LA2405wg 24'' 1920x1200 @5760x1200 Corsair 850watts 
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