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Seasonic M12II 650w?

post #1 of 8
Thread Starter 
I cannot get a quality review of this unit, so i'm just wondering how is the performance of this unit? IIRC the M12II 650w is based off the TX-XX0 V2 design, but i just want to make sure.
post #2 of 8
The 650W M12II is a good quality-made unit, but it's not based off of any of Corsair's PSUs and it's backwards to say that it is. Besides, the TX V2 series uses the S12II as its platform, not the M12II (not that there's much difference anyway).

Is this what you'll be powering? http://www.overclock.net/lists/display/view/id/4263007

Also, can you order from Newegg.com?
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It's a computer!
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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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Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
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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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post #3 of 8
If you're in the US, Tigerdirect is selling a Sparkle 850 watt Gold for ~$70 AR. It's a hard value to beat, even if it might be overkill for your system.
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post #4 of 8
Thread Starter 
Quote:
Originally Posted by TwoCables View Post

The 650W M12II is a good quality-made unit, but it's not based off of any of Corsair's PSUs and it's backwards to say that it is. Besides, the TX V2 series uses the S12II as its platform, not the M12II (not that there's much difference anyway).

Is this what you'll be powering? http://www.overclock.net/lists/display/view/id/4263007

Also, can you order from Newegg.com?
welp as you can see by the date, i havent updated that list for a long time tongue.gif. Im getting a i5 haswell based 7879 system, with plans to upgrade to a nvidia 880/8970 next year. I will be building this pc at the end of the week, thurdsay or friday. I am ordering from microcenter, newegg and amazon. Preferably amazon because i have prime.
post #5 of 8
Quote:
Originally Posted by Droidisthebest View Post

welp as you can see by the date, i havent updated that list for a long time tongue.gif. Im getting a i5 haswell based 7879 system, with plans to upgrade to a nvidia 880/8970 next year. I will be building this pc at the end of the week, thurdsay or friday. I am ordering from microcenter, newegg and amazon. Preferably amazon because i have prime.

Oh, that changes everything because the 650W M12II is has a "group regulated" design, and this means that it's likely not compatible with Haswell. For a guaranteed compatibility, a PSU with a DC-DC design is best.

I don't like shopping for PSUs on Amazon.com because unlike stores like Micro Center and Newegg, they don't have a PSUs section on their site that I can browse.

The next best PSU I would recommend is the 550W SeaSonic G Series because the price is similar to the 650W M12II, but it's a much better PSU and still has all of the power your system will need - unless you want to do heavy overclocking on the video card (such as increasing its voltage). You can also go with the modular 550W Rosewill CAPSTONE Series PSU (550-M).
It's a computer!
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It's a computer!
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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 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 (24" 1920 x 1080 144Hz G-SYNC) 
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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post #6 of 8
Quan289 on linustechtips made a very good post regarding group regulated power supplies, Most likely the qwan456 we have here.
Quote:
Posted 02 June 2013 - 11:14 AM

A PSU with a DC-DC secondary will be officially compatible with Haswell, which the S12II/M12II 650w+ has. The S12II/M12II Bronze 430~620w and the units that are based on it does not and is a group regulated design. However, this does not mean that all group-regulated design are not supported, even if it is not officially supported by Intel and the PSU manufacturers. This is because they their testing methodology likely test the PSU in the worse case scenario.



Anyways, not all group regulated design are "officially" compatible with Haswell because of they behave in crossload scenarios. Basically, when you have a low load on the +12v rail (in this case, the Haswell power state can allow it to go to 0.05) and the load on the minor rails (3.3v/5v) starts to increase, the voltage on the +12v start to increase as well. The scare is that if the load on the minor rail will high enough during this low power state, the +12v voltages may be out of specs and OVP (over voltage protection) of the PSU set off and may not allow it to go back out of this state and shut down.



Here's the thing. If you are on idle and your processor goes into this power state, the fans, HDD, GPU, etc. will still be putting some load on the +12v as well which will balance the load more so this won't happen.

What if you have a passive computer with no fans, HDDs, GPU and such to put some more load on the +12v rail? Unless you have a very poor, old group regulation PSU, it's still highly unlikely that the load of the minor rails will be high enough to negetively affect the voltages in such a way either.

Of course, if you have a crapload of SSDs or something of the sort that will increase your 3.3/5v for whatever reason, then it might cause a problem. But as Glenwing thread post stated, there should be an option in the BIOS on it for you to disable. The only drawback is your idle power draw will be slightly higher.
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post #7 of 8
Well then all I can say is Whew.
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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 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 (24" 1920 x 1080 144Hz G-SYNC) 
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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It's a computer!
(19 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 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 (24" 1920 x 1080 144Hz G-SYNC) 
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 #8 of 8
I love this PSU, super silent fan, 25a 3.3v rail and 25a 5.5v rail and comes with a 53a 12v rail. AND its semi-modular (all you ever need). I got the 650watt and ive never been happier. I wish I would have gotten the same one when i got a new one, big mistake. Seasonic A+++++++++
Edited by dmfree88 - 6/8/13 at 12:12am
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