Power Supply Suggestion Thread(update 2019)

chimera201

chimera201

Wise Old Owl
Referring to an old discussion

Seems like some sites have updated the warranty period to 7 years (half update in some cases, different in desc/spec :facepalm:)

MD - EA550G Pro - Rs. 5800
MD - EA650G Pro - Rs. 6630
MD - EA750G Pro - Rs. 7150

Prime - EA650G Pro - Rs. 6150
Prime - EA750G Pro - Rs. 6800

ITDepot - EA750G Pro - Rs. 7925

Competitor is Corsair TXM series:

MD - TX550M - Rs 5550
MD - TX650M - Rs. 6500
MD - TX750M - Rs. 8070

Prime - TX650M - Rs. 6572

ITDepot - TX650M - Rs. 6760
ITDepot - TX750M - Rs. 8585

Corsair Vengeance Series also seems to be listed on mdcomputers
 
Z

zcream

New to this forum
Need a PSU for my 6 core rig. I think the old antec 650w is coming out as I have a beefy 780 ti hanging off it

Sent from my Lenovo TB-8703F using Tapatalk
 
chimera201

chimera201

Wise Old Owl
zcream said:
Need a PSU for my 6 core rig. I think the old antec 650w is coming out as I have a beefy 780 ti hanging off it

Sent from my Lenovo TB-8703F using Tapatalk
Click to expand...

CORSAIR SMPS RM550X - 550 WATT 80 PLUS GOLD CERTIFICATION FULLY MODULAR PSU
 
chimera201

chimera201

Wise Old Owl
Cooler Master Masterwatt Lite 600W 230V Review

Performance (40% of the final score) - this is going to get interesting. We'll start with the efficiency. Promised 80 Plus White for Europe, this unit delivered on that so no deductions there. The S&C point does take a small hit due to the power on spike on the standby rail, so half a point comes off there. Ripple control was very good on the 12V side of things, half a point off there, but the 5V rail was also out of spec by 5mV which will remove another point from the score (half for not being excellent, another half for coloring outside the ATX lines). And finally... the regulation. Under the old scoring method, this would do well. But this unit has hardware breaking readings in both of the crossload tests, forcing me to change my whole methodology just to accommodate it. With the change, this unit comes in at an average of 13.54%... this is well outside ATX spec, which means it loses all scoring points possible for regulation. Since that part of the score stops at the 5% ATX limit, that'll be another 2.5 point deduction. What's that add up to? A 5.5 total score for this area. Barely above average, but that looks more than fair to me given where this unit is placed in the market.

Functionality (20% of the final score) - this unit is lacking in a lot of ways, here, but not in all the ways I was expecting. This is a bargain unit, and the number of accessories reflects this. I can't score against that. What I can and will score against is the usual stuff. No modularity? One full point off. Partially sleeved? Half a point removed. Cannot run below 200V? A full point down. Hardwired Berg connector from the 20th century? Half a point goes. But I'll stop there. Documentation was surprisingly good, and we still had thermal fan control. That's about all we can expect from a unit this far down in the budget pile. 7.

Value (20% of the final score) - believe it or not, though this unit seems to show up at Amazon, it's not the same exact unit. Remember, this thing is 230V only, so you can't get it here. We're going to India today, where this unit runs at 4,000 rupees at MD Computers. That's about $54 to you and me. It's the second cheapest they have, the Antec VP600P coming in at just a bit less money. Now, I have no idea how good the Antec is, but the Thermaltake Smart RGB 600W is going for 4,645 rupees. That's what... a seven dollar difference? For a unit with RGB fan and full worldwide voltage capability? Just go with that. I can't do more than a 4 here, and that might be pushing it.

Build Quality (20% of the final score) - hooboy... if this is Enhance's lowest grade of unit, and I sincerely hope it is, my estimation of this company has slipped a bit today. Ineffective undervolt protection? I'll take a point for that. Third tier capacitors? A point for that. A sleeve fan with only three years backing it outside four countries? Gimme a point for that. Not so good soldering? Half a point there. No thermal interface material on the thermistor for fan control and overtemp? Half a point there, too. 85 degree main filter cap? Half a point. Shocking me thrice? I'll let them be on that one. I used to score against that with the gutless wonders, but decided it was too harsh. Owners shouldn't be poking around in the guts of these, anyway. 5.5.


Summary

Just buy something else.

The Good:

  • cheap
  • very good to excellent 12V and 3.3V ripple control
  • cheap
  • near mythic voltage regulation on 5V and 12V, as long as you keep it from crossloading
  • cheap
  • 40 degree temp rating
The Bad:

  • ineffective undervolt protection leading to hardware breaking crossload voltage regulation
  • requires more minimum load than Haswell and newer CPUs need for advanced sleep states
  • out of spec 5V ripple
The Mediocre:

  • third tier capacitors
  • some soldering related issues
  • 3.3V regulation never was very good
  • 230V only
  • not so good fan backed by 3 year warranty except for four countries that get 5 years
Click to expand...

They mention mdcomputers. mdcomputers getting worldwide recognition :lol:
 
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Vyom

Vyom

The Power of x480
Staff member
Admin
So they just fly to India to buy any cheap computer parts? Is the flight cost more than the difference in price for them!
 
chimera201

chimera201

Wise Old Owl
Vyom said:
So they just fly to India to buy any cheap computer parts? Is the flight cost more than the difference in price for them!
Click to expand...

They are just saying for today's "price quote" we are going to India today since it's not listed on their stores yet.
 
quicky008

quicky008

Technomancer
I have a question about a seasonic s12ii 620 psu that i have in my rig.

It was bought in 2017,very recently i noticed that when the system is idle,its outputting 3.40V on the 3.3v rail-while under load it dips to around 3.36V.

What concerns me is that the idle voltage is rather close to the upper threshold of the ATX tolerance limit of 3.465v-so is it safe to continue using this psu?

The measurements were taken using Hwinfo-while they might not have been accurate,i just would like to know whether its a good idea to use the psu in this condition or not.
 
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W

whitestar_999

Super Moderator
Staff member
First of all,like you said,hwinfo(or any other software monitoring software for voltage) readings are not reliable.Second,3.3V rail is quite insignificant compared to 12V rail.
 
quicky008

quicky008

Technomancer
I never bothered to check the output on this psu's 3.3v rail earlier-i just noticed it by accident recently while monitoring my cpu's temps during an hour long gaming session.

The output of all rails seem stable and within prescribed limits,only the 3.3v output appears to be a bit on the higher side.

Which devices actually draw any kind of power from the 3.3v rail?Are there any signs of system instability that i might notice if the voltages on this rail go out of spec?

( PS:I am aware that there are quite a few others in this forum who too are using this psu in their builds-i would be much obliged if they could check the 3.3v output of their psu using hwinfo (or any other utility of their choice)and report it here,thanks.)
 
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whitestar_999

Super Moderator
Staff member
@chimera201 might be knowing more about this but as far as I know 12V rail is the most important.Also if you haven't experienced any system stability issues till now then most likely everything is ok.
 
chimera201

chimera201

Wise Old Owl
quicky008 said:
I have a question about a seasonic s12ii 620 psu that i have in my rig.

It was bought in 2017,very recently i noticed that when the system is idle,its outputting 3.40V on the 3.3v rail-while under load it dips to around 3.36V.

What concerns me is that the idle voltage is rather close to the upper threshold of the ATX tolerance limit of 3.465v-so is it safe to continue using this psu?

The measurements were taken using Hwinfo-while they might not have been accurate,i just would like to know whether its a good idea to use the psu in this condition or not.
Click to expand...

It's still within limits. HWInfo reports readings from the motherboard sensor not directly from PSU cables. Deviations are expected. 3.3V is rarely used now. Some old chips on the mobo might be using it, PCI slots, SATA, etc. It's not going to cause any issues. Seriously the PC would be unstable before you even see a out of spec reading. HWInfo is just good for monitoring temperatures so you know when it's time to clean your PC or apply thermal paste.
 
chimera201

chimera201

Wise Old Owl
Seems like Corsair Vengeance series is in the market with 100% Japanese capacitors, semi-passive operation, multi-rail switch, 5 year warranty. Made by HEC. Doesn't look like it's worth it at this price. Unnecessary features adding to the cost.

Buy Online | CORSAIR VENGEANCE 650M 650 Watt 80 PLUS Silver Certified SMPS CP-9020175-UK | Price in India
Buy Online | CORSAIR VENGEANCE 750M 750 Watt 80 PLUS Silver Certified SMPS CP-9020176-UK | Price in India
POWER SUPPLY CORSAIR VENGEANCE SERIES 650M - 650 WATT 80 PLUS SILVER CERTIFIED PSU
POWER SUPPLY CORSAIR VENGEANCE SERIES 750M - 750 WATT 80 PLUS SILVER CERTIFIED PSU

*www.cybenetics.com/code/pdf.php?id=iyf
*www.cybenetics.com/code/pdf.php?id=sbN
*www.cybenetics.com/code/pdf.php?id=DWi
*www.cybenetics.com/code/pdf.php?id=LrF
 
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whitestar_999

Super Moderator
Staff member
Looks like TXM is still the reliable option,still don't trust earthwatts pro gold enough till more buyers confirm it is the latest version which is selling in market.
 
quicky008

quicky008

Technomancer
Can anyone share their views on the corsair Rmx 1000 psu? Someone i know is selling off a RMA'd rmx 1000 for roughly 8k-is it worth buying at this price? Its 1 year old,so i think it has around 9 years worth of warranty remaining still.

But are these psus reliable?Even they are supposed to be top of the line,a considerable no of user reviews i found on sites like amazon,newegg etc seemed to indicate that upon prolonged usage,some of the cables in this particular model tend to overheat and melt,thereby damaging any device which might be connected to it.Are these isolated/exceptional cases or might be the result of some design flaw/glitch which may exist in these psus(esp. the 1000w model)?
 
W

whitestar_999

Super Moderator
Staff member
RM1000X is one of the rare psu to get a 10/10 rating at jonnyguru,also read the below thread(all two & a half pages) for some amusing discussion:
any way to fix critical RM1000x flaw? (modify default fan speed)) - jonnyGURU Forums

Also this:
burn smell coming from psu - jonnyGURU Forums

However do note that a 1000w psu may need a 1.5kva UPS even if the actual system load is much less(say 200-300w). It may still work but I wouldn't count on it.
 
quicky008

quicky008

Technomancer
whitestar_999 said:
RM1000X is one of the rare psu to get a 10/10 rating at jonnyguru,also read the below thread(all two & a half pages) for some amusing discussion:
any way to fix critical RM1000x flaw? (modify default fan speed)) - jonnyGURU Forums

Also this:
burn smell coming from psu - jonnyGURU Forums

However do note that a 1000w psu may need a 1.5kva UPS even if the actual system load is much less(say 200-300w). It may still work but I wouldn't count on it.
Click to expand...
Why will it need need a 1.5kva ups to work? Is it not compatible with regular 500/600 va upses?
 
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