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Capacitor aging?

post #1 of 8
Thread Starter 
Hey guys, long-time viewer, first-time poster. So I'm building a new gaming rig, and I have some concerns about reusing my PSU. Here's the setup:

MoBo: ASUS Z87 Sabretooth
CPU: i5 4670K Haswell
GPU: EVGA GTX 780
RAM: 8 GB (2x4) G.SKILL RipJaws X 1600 (12800)
HDD: 3 7200 RPM HDDs
SSD: Kingston 120 GB
Optical: 1 DVD-RW drive
Case: Antec 1200 (6 LED 120mm fans, 1 200mm fan, fan controllers, etc, reusing from my last build)
PSU: Corsair TX 650w

So my question(s):

That PSU has been used in my last two rigs, and has seen pretty consistent use since 2008(ish). Should I worry about capacitor aging? I'm asking a lot more of it in this build than I have in the past. Let's assume for the sake of the discussion that I won't be doing any over clocking initially. Additionally, is 650w maybe lowballing it in the first place?

Thanks in advance for your input =D
post #2 of 8
Just speaking for myself. Considering that unit in particular, I wouldn't worry about it unless it just won't power your system. And it should. If you begin overclocking or want to add another 780 down the road then it will be time to upgrade your power supply.
wevs rig
(19 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770K Gigabyte GA-Z77X-UD5H MSI GTX 670 PE OC x2 SLi Team xTreem 16Gb (2x4Gb) DDR3 2400Mhz 
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Crucial C300 128Gb x2 RAID0  SK Hynix SH910 128Gb x2 RAID0 Western Digital Black Edition 1Tb Western Digital Black Edition 640Gb 
Optical DriveOptical DriveCoolingOS
Asus DVD / Bluray LG Bluray / Burner Custom H20 - Swiftech, XSPC Windows 7 Pro x64 
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wevs rig
(19 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770K Gigabyte GA-Z77X-UD5H MSI GTX 670 PE OC x2 SLi Team xTreem 16Gb (2x4Gb) DDR3 2400Mhz 
Hard DriveHard DriveHard DriveHard Drive
Crucial C300 128Gb x2 RAID0  SK Hynix SH910 128Gb x2 RAID0 Western Digital Black Edition 1Tb Western Digital Black Edition 640Gb 
Optical DriveOptical DriveCoolingOS
Asus DVD / Bluray LG Bluray / Burner Custom H20 - Swiftech, XSPC Windows 7 Pro x64 
MonitorKeyboardPowerCase
Acer P243Waid Razer Black Widow Ultimate Corsair HX1000 Corsair C70 White Edition 
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post #3 of 8
Thread Starter 
Thanks for the input. That's more or less what I was thinking, as well. Ultimately the goal is to add another 780 down the road (maybe 6 months or so when the price drops it down into the $300 range) and I'd plan on updating the PSU at that point anyway. The Corsair has served me well, though.
post #4 of 8
Maybe if you've been using it 24/7 at high loads this whole time with hot air as intake. But that can't be true if you're asking more of it now than before.

But even then, TX650 uses good electrolytics. The kind of load a i5-4670k and GTX 780 can pull is nowhere near 650W anyway, and the thing is rated for 50C (effectively meaning a higher rating at lower ambient temperatures).

You're looking at under half of 650W drawn in most games on average.
post #5 of 8
Cap life is affected by both temperature and ripple current. So for most PSU companies, your warranty is based on worst case scenario. That means the fan is going to die first. These days, with PSU topologies so much that ripple current is next to nothing, you're really talking about a 10 to 15 year life time on even Chinese capacitors.

Unfortunately, there's still a lot of companies making crap. There's even good manufacturers supplying price oriented PSUs to the like of HP, Lenovo, etc.. And when I say crap, I don't mean crappy quality necessarily, but PSUs that are using old single forward topologies with a lot of ripple current that are over stressing capacitors. Even if those PSUs are actively cooled 24/7, those caps are going to fail, not due to heat, but the amount of filtering they have to do.

So... to speak to your situation specifically: You've had this thing running for four years. Corsair expects that thing to last five under worst case scenario. Yeah... you're probably good for at least another couple years. Just blow all of the dust out of it first. ;-)
post #6 of 8
Thread Starter 
Thanks for all the input, guys. As I continue to put this machine together, it continually gets more and more expensive (as is so often the case) but it's good to know that the trusty Corsair will see me through another few years. At least I can save a few bucks there in the short term =D

Going forward, though, assuming I was going to run 2 GTX 780s and do some modest over clocking, what should I be looking at? 850? 1000?
post #7 of 8
Also, when good quality PSU's die, they rarely take any other parts with them. Cheap ones do unfortunately. My dad once bought the cheapest PSU he could find, and what can you say, it said kaboom 2 months later, frying the mobo and gpu. After this I told him to get a quality PSU, and it lasted well for a long time, until a lightning strike took it out, and the only thing that died was the PSU. rolleyes.gif Then he just RMA'd it and got a new, identical one, and it's still running flawlessly 5 or 6 years later. rolleyes.gif

So I wouldn't worry about that PSU until it gets obsolete, either die peacefully or become insufficient for your next upgrade. rolleyes.gif
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post #8 of 8
Nice to have JonnyGURU stop in and give us some input and education. Love your reviews and trust them almost exclusively. Thanks & much appreciation!!
wevs rig
(19 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770K Gigabyte GA-Z77X-UD5H MSI GTX 670 PE OC x2 SLi Team xTreem 16Gb (2x4Gb) DDR3 2400Mhz 
Hard DriveHard DriveHard DriveHard Drive
Crucial C300 128Gb x2 RAID0  SK Hynix SH910 128Gb x2 RAID0 Western Digital Black Edition 1Tb Western Digital Black Edition 640Gb 
Optical DriveOptical DriveCoolingOS
Asus DVD / Bluray LG Bluray / Burner Custom H20 - Swiftech, XSPC Windows 7 Pro x64 
MonitorKeyboardPowerCase
Acer P243Waid Razer Black Widow Ultimate Corsair HX1000 Corsair C70 White Edition 
MouseMouse PadAudio
Razer DeathAdder SteelSeries Creative Soundblaster X-FI Titanium HD 
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wevs rig
(19 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770K Gigabyte GA-Z77X-UD5H MSI GTX 670 PE OC x2 SLi Team xTreem 16Gb (2x4Gb) DDR3 2400Mhz 
Hard DriveHard DriveHard DriveHard Drive
Crucial C300 128Gb x2 RAID0  SK Hynix SH910 128Gb x2 RAID0 Western Digital Black Edition 1Tb Western Digital Black Edition 640Gb 
Optical DriveOptical DriveCoolingOS
Asus DVD / Bluray LG Bluray / Burner Custom H20 - Swiftech, XSPC Windows 7 Pro x64 
MonitorKeyboardPowerCase
Acer P243Waid Razer Black Widow Ultimate Corsair HX1000 Corsair C70 White Edition 
MouseMouse PadAudio
Razer DeathAdder SteelSeries Creative Soundblaster X-FI Titanium HD 
  hide details  
Reply
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