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Would my PSU be enough for a new build or do I need to upgrade?

post #1 of 9
Thread Starter 
I currently am using a corsair cx400w psu and I was wondering for the following build would I need to upgrade or would my 400w supply be enough. Thank you for any suggestions.

CPU: I5 4670k overclocked
Mobo: gigabyte g1 sniper m5 z87
Ram: G.SKILL Trident X Series 8GB (2x4GB) DDR3 2400MHz
GPU: evga 550ti
Other: 1 hd, 1 ssd, 1 dvd drive
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post #2 of 9

No, you should still have plenty of power. The only thing is, there's a chance that you'll have to disable C7 according to this post:

 

Quote:
Originally Posted by qwan456 View Post

An independent PSU or a PSU with a DC-DC secondary will "compatible" with Haswell C7 power state.

Lower-ends group-regulated PSU may have issues with it. Basically, this power state may keep the load of the +12v rail as low as 0.05A, and the whole scare is that the load on the minor 3.3/5v rails will affect the voltage of the +12v and have go out of spec (the higher the load on the 5v, the higher the voltage goes on the +12v). So when you put your computer to sleep and get out of it, the OVP protection of the PSU may trip off and your computer will not power up.

The thing is that it is unlikely that the load on the minor rail during this low power state isn't high enough to cause this problem anyways, so chances are, you don't have to worry even if it is not officially compatible (the testing methodology done by Intel and such is likely tested more in a worse case, unlikely scenario). If you do run into this problem, however, you should be able to disable this feature on the motherboard's BIOS.
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It's a computer!
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post #3 of 9
Thread Starter 
Quote:
Originally Posted by TwoCables View Post

No, you should still have plenty of power. The only thing is, there's a chance that you'll have to disable C7 according to this post:

That doesn't sound too hard to do. If I plan to upgrade the GPU to something like a 7950 would I still have enough room to play with? I was thinking of just getting the Corsair TX650M for 65 dollars which seems really cheap for where I live? Would you advise it Twocables, god of posts and reps.
Catalyst
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CPUMotherboardGraphicsRAM
[E8400 E0] [4.05Ghz 1.232v] [Gigabyte][EP45-UD3P] [XFX] [9600 GSO] [Patriot Viper] [2x2GB] [1080MHz] [5-5-5-15] 
Hard DriveOSMonitorKeyboard
[Seagate Barracuda][1.5TB] [Windows 7 Home Premium] [Sony Vaio] [17"] [Logitech] [G15] 
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Catalyst
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Hard DriveOSMonitorKeyboard
[Seagate Barracuda][1.5TB] [Windows 7 Home Premium] [Sony Vaio] [17"] [Logitech] [G15] 
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post #4 of 9
Quote:
Originally Posted by Blooregard View Post



That doesn't sound too hard to do. If I plan to upgrade the GPU to something like a 7950 would I still have enough room to play with? I was thinking of just getting the Corsair TX650M for 65 dollars which seems really cheap for where I live? Would you advise it Twocables, god of posts and reps.

The TX650M only has two PCI-E cables so its useless if you wanted to add a second card
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Seravee
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post #5 of 9
Quote:
Originally Posted by Blooregard View Post




That doesn't sound too hard to do. If I plan to upgrade the GPU to something like a 7950 would I still have enough room to play with? I was thinking of just getting the Corsair TX650M for 65 dollars which seems really cheap for where I live? Would you advise it Twocables, god of posts and reps.

 

lol "god of posts and reps". I disagree. :P

 

Anyway, all kidding aside, you should have enough. Your gaming power draw if the CPU is overclocked but the 7950 is at stock (I wouldn't overclock the 7950 in addition to the 4670K) would top out at around 350-375W.

 

The CX400 is the only decent CX series PSU: it's a SeaSonic S12II. It's an inferior S12II, but it's still good enough that you should be able to stick with it.

 

Shilka said what I probably would have said, except that the only good thing is you could use Molex to PCI-E adapters, but those are always butt-ugly. :)

It's a computer!
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CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) 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 DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) 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 DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #6 of 9
I'd be scared to try a 7950 with an OCed CPU..with OC'd RAM on a 400w PSU. blushsmiley.gif
 
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Thuban Powah!
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cheap! Newegg box panel ibeats with onboard. 
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post #7 of 9
Quote:
Originally Posted by Schmuckley View Post

I'd be scared to try a 7950 with an OCed CPU..with OC'd RAM on a 400w PSU. blushsmiley.gif

 

http://www.guru3d.com/articles_pages/his_radeon_hd_7950_review,8.html

 

With one 7950 under full load in their system, their PSU pulled 300W from the wall outlet. Even if you add 150W to that to account for the extra power consumption from overclocking the CPU and the memory, that's still making the PSU pull only 450W from the wall outlet. I mean, if the PSU is 85% efficient while pulling 450W from the wall, then the computer is pulling 382W from the PSU. However, that's unrealistically high. A more realistic power draw is seen while gaming, and that would never exceed about 350W.

It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) 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 DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
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Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) 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 DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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post #8 of 9
Thread Starter 
Quote:
Originally Posted by TwoCables View Post

http://www.guru3d.com/articles_pages/his_radeon_hd_7950_review,8.html

With one 7950 under full load in their system, their PSU pulled 300W from the wall outlet. Even if you add 150W to that to account for the extra power consumption from overclocking the CPU and the memory, that's still making the PSU pull only 450W from the wall outlet. I mean, if the PSU is 85% efficient while pulling 450W from the wall, then the computer is pulling 382W from the PSU. However, that's unrealistically high. A more realistic power draw is seen while gaming, and that would never exceed about 350W.

Good to know. I guess i'll just stick with my cx400 for now until I upgrade the gpu. Thanks again for the insight and knowledge.
Catalyst
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CPUMotherboardGraphicsRAM
[E8400 E0] [4.05Ghz 1.232v] [Gigabyte][EP45-UD3P] [XFX] [9600 GSO] [Patriot Viper] [2x2GB] [1080MHz] [5-5-5-15] 
Hard DriveOSMonitorKeyboard
[Seagate Barracuda][1.5TB] [Windows 7 Home Premium] [Sony Vaio] [17"] [Logitech] [G15] 
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Catalyst
(13 items)
 
  
CPUMotherboardGraphicsRAM
[E8400 E0] [4.05Ghz 1.232v] [Gigabyte][EP45-UD3P] [XFX] [9600 GSO] [Patriot Viper] [2x2GB] [1080MHz] [5-5-5-15] 
Hard DriveOSMonitorKeyboard
[Seagate Barracuda][1.5TB] [Windows 7 Home Premium] [Sony Vaio] [17"] [Logitech] [G15] 
PowerCaseMouse
[Corsair] [400wCX] [Lian Li] [PC-7FWB] [Logitech] [G9] 
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post #9 of 9
Quote:
Originally Posted by Blooregard View Post


Good to know. I guess i'll just stick with my cx400 for now until I upgrade the gpu. Thanks again for the insight and knowledge.

 

You're very welcome!

It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) 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 DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) 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 DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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Reply
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