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Is my OCZ ModXStream Pro 600W enough for my overclock and gpu addition?

post #1 of 3
Thread Starter 
Hi Guys,
My 1055T is currently OC'ed to 3.5Ghz at the moment, I'm looking to overclock to 4ghz with improved cooling.
I also want to purchase another HD7770 gpu to add to the current one I already have.
I have looked at various PSU calculators and with my rig at 100% load with those changes are close or going over the 600w power requirement.
I have read that at 4ghz the 1055T could draw up to 300W at full load?
Any thoughts as I'm trying to avoid changing the PSU as I have not long bought it?

Here is my rig after potential upgradesif that helps -
AMD 1055T Phenom II x 6 @ 4Ghz
ASRock 880g Extreme 3 mobo
G-Skill Ripjaws 1600Mhz 2 x 4gb
Saphire Radeon HD7770 Ghz Edition x2
Samsung 500gb Sata hd
LiteOn iHAS 124
OCZ ModXStream Pro 600W PSU
Thuban Rig
(15 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1055T @ 3.8ghz ASRock 880G Extreme3 Gigabyte Geforce 560ti 448 G.Skill Ripjaw 
RAMHard DriveHard DriveOptical Drive
G.Skill Ripjaw corsair force gt ssd Samsung Sata II 5400rpm Lite On iHAS 124 
CoolingOSMonitorKeyboard
Zalman CNPS10x performa Windows 7 Ultimate 64bit LG Flatron W2361V El Cheapo 
PowerCaseMouse
OCZ ModXStream Pro 600W  fractal design 3000 with 3 x 120mm Fractal fans Logitech G400 
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Reply
Thuban Rig
(15 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1055T @ 3.8ghz ASRock 880G Extreme3 Gigabyte Geforce 560ti 448 G.Skill Ripjaw 
RAMHard DriveHard DriveOptical Drive
G.Skill Ripjaw corsair force gt ssd Samsung Sata II 5400rpm Lite On iHAS 124 
CoolingOSMonitorKeyboard
Zalman CNPS10x performa Windows 7 Ultimate 64bit LG Flatron W2361V El Cheapo 
PowerCaseMouse
OCZ ModXStream Pro 600W  fractal design 3000 with 3 x 120mm Fractal fans Logitech G400 
  hide details  
Reply
post #2 of 3

You have way more than enough power:

 

According to this review of the 1055T, they got a reading of 224W at the ATX12V when it was overclocked to 4 GHz.

 

Now, here's a review of the 7770:

 

http://www.guru3d.com/articles_pages/amd_radeon_hd_7750_and_7770_review,7.html

 

With one 7770 under full load in their system, their PSU pulled 231W from the wall outlet. The 7770 alone pulled 86W, so adding 86W for another 7770 in Crossfire results in 317W being pulled from the wall outlet. Their CPU was idling, so we can add the 224W as seen above in the review I linked of the 1055T. This makes the PSU pulling 541W from the wall outlet. So, if the PSU is 85% efficient while pulling 541W from the wall outlet, then the computer is pulling 460W from the PSU. This is actually an unrealistically high power draw because I'm saying the 7770s and the 1055T are under full load simultaneously. A more realistic power draw is seen while gaming, and that would be closer to about 375-425W.

It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #3 of 3
Thread Starter 
Thanks for replying, I'm glad that my current psu is sufficient.
With the overclock my system should last me a while longer yet. The thurban seems to still hold its own against some of the fx processors.
Thuban Rig
(15 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1055T @ 3.8ghz ASRock 880G Extreme3 Gigabyte Geforce 560ti 448 G.Skill Ripjaw 
RAMHard DriveHard DriveOptical Drive
G.Skill Ripjaw corsair force gt ssd Samsung Sata II 5400rpm Lite On iHAS 124 
CoolingOSMonitorKeyboard
Zalman CNPS10x performa Windows 7 Ultimate 64bit LG Flatron W2361V El Cheapo 
PowerCaseMouse
OCZ ModXStream Pro 600W  fractal design 3000 with 3 x 120mm Fractal fans Logitech G400 
  hide details  
Reply
Thuban Rig
(15 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1055T @ 3.8ghz ASRock 880G Extreme3 Gigabyte Geforce 560ti 448 G.Skill Ripjaw 
RAMHard DriveHard DriveOptical Drive
G.Skill Ripjaw corsair force gt ssd Samsung Sata II 5400rpm Lite On iHAS 124 
CoolingOSMonitorKeyboard
Zalman CNPS10x performa Windows 7 Ultimate 64bit LG Flatron W2361V El Cheapo 
PowerCaseMouse
OCZ ModXStream Pro 600W  fractal design 3000 with 3 x 120mm Fractal fans Logitech G400 
  hide details  
Reply
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