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post #40061 of 43976
Quote:
Exactly. It's why "OH NOES MY PSU IS NEAR IT'S LIMITS" is just being dramatic

You buy a PSU capable of "X" wattage,you can expect it to output it perfectly without any consequence,because,you know,it's been rated to work within those specifications. It doesn't work¿? Then the PSU is junk. Easy tongue.gif
Edited by GoLDii3 - 10/30/15 at 11:10am
post #40062 of 43976
Quote:
Originally Posted by Mega Man View Post

Quote:
Originally Posted by Gumbi View Post

@ MEC 777.

400 watts (actually 397) is nowhere near 90% load on a 520 watt PSU. It's less than 80%. And it's not like you'll be gaming 24/7.

Like I said, if it's a quality PSU (like the aforementioned Seasonic, I don't see the problem).

I personally recommend 550 - 650 watt PSUs for 390/390X systems depending on whether it's an Intel CPU and/or how heavy the overclocking (especially on the GPU, overvolting can add quite a bit more wattage) will be.

I'll just leave this here http://www.overclock.net/t/928113/a-message-to-the-community-on-enthusiast-power-supplies
^^This!

If the PSU break when running it at 100% load & take other hardware with it, then you do not call it good quality PSU. A good quality PSU will be able to deliver the rated amount of wattage for extended period of time without any problem.
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post #40063 of 43976
Quote:
Originally Posted by GoLDii3 View Post

Exactly. It's why "OH NOES MY PSU IS NEAR IT'S LIMITS" is just being dramatic

You buy a PSU capable of "X" wattage,you can expect it to output it perfectly without any consequence,because,you know,it's been rated to work within those specifications. It doesn't work¿? Then the PSU is junk. Easy tongue.gif

Who was ever being dramatic? Again, I said it's not ideal.

Go ahead and run your 290x on your 3 year old 520w unit. Like I said before, if it works out for you, then great. If it doesn't, don't say you weren't warned.

Again, I'm just trying to help is all. You know, a lot of people would have just said, "oh yeah grab a 290x and slap it in your system, it'll be great" without even asking about or looking at the rest of your system specs to even check if everything is compatible. I took a look at your system to see if there's anything that might be of concern, knowing it's a very power-hungry GPU. I thought you would appreciate a suggestion/recommendation that would help you get the most out of your new upgrade and keep it running strong/reliable for a longer period of time.
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post #40064 of 43976
Quote:
Originally Posted by kizwan View Post

^^This!

If the PSU break when running it at 100% load & take other hardware with it, then you do not call it good quality PSU. A good quality PSU will be able to deliver the rated amount of wattage for extended period of time without any problem.
there can be quality control issue our simply a slightly weaker cap on any model even the best...we all know cooler is better and heat can kill components faster...a psu running at 30c will be much happier than one pegging the meter and running at say 50c...I agree that quality unit should produce full rated wattage at all times when within temp spec but I play it safe in this area for all the unforeseen...i prefer longevity so I would rather over estimate than under estimate..keep them running cool and for a long time...to each their own...so far I've never had a psu fail but maybe I've just been lucky in this regard...
Edited by mfknjadagr8 - 10/30/15 at 12:45pm
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post #40065 of 43976
Quote:

Agree with this. However, the unit in question (Seasonic S12II 520w bronze), I wouldn't consider to be an "enthusiast" high-end PSU. Seasonic is one of the best PSU OEM's out there, but that doesn't mean every single unit they make is bulletproof. Is it a good unit? Yeah. It does use group regulation, which is something I'd try to avoid, however according to Jonnyguru this unit did surprisingly well on cross-load tests (typically where you'd find the flaws of group regulation and where you'd run into problems powering a beefy GPU like a 290x). So while it is a pretty good unit, I still wouldn't classify it under the "enthusiast high-end" umbrella of PSU's that Phaedrus2129 is referring to.

I've lost track how many times I'v said this; will it work? Yes. Is it ideal/recommended, I would say no. That's all I'm saying.

Not trying to nit-pick or draw this discussion out longer than it needs to be, just trying to be objective/realistic and help a fellow member out.
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post #40066 of 43976
Quote:
Originally Posted by mfknjadagr8 View Post

Quote:
Originally Posted by kizwan View Post

^^This!

If the PSU break when running it at 100% load & take other hardware with it, then you do not call it good quality PSU. A good quality PSU will be able to deliver the rated amount of wattage for extended period of time without any problem.
there can be quality control issue our simply a slightly weaker cap on any model even the best...we all know cooler is better
  • I would avoid any brands that have known quality control issue. The quality control is there for preventing faulty PSU from getting to the consumer.
  • Yes, there's time faulty PSU will find a way to the consumer but a good designed PSU, when it break down, it won't take another hardware with it and at the same time doesn't harm the end-user as well.
  • If PSU is only working at certain (low) temp, then it's not good quality PSU. The worst case scenario with good quality PSU is the efficiency may drop when the temp is higher.
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post #40067 of 43976
Quote:
Originally Posted by mfknjadagr8 View Post

note it's xfx reference...with elpidia memory...this is the bottom of my two cards the top card easily handles 1200 1400 with a +50 on core but the bottom card needs aux voltage and a bump to 100 on core or it won't work at all in crossfire at those speeds so I've been running at 1100 1300 with +25 core...power limit at max

Try flashing a reference bios. Still the most stable I have tried on my cards. Handles 1270/1650 without the blackscreens on high Voltages.

Or try the moded 3XX bios. Sadly, mine doesn't seem to benefit much on those BIOSes.
post #40068 of 43976
Quote:
Originally Posted by mus1mus View Post

Warning: Spoiler! (Click to show)
Quote:
Originally Posted by mfknjadagr8 View Post

note it's xfx reference...with elpidia memory...this is the bottom of my two cards the top card easily handles 1200 1400 with a +50 on core but the bottom card needs aux voltage and a bump to 100 on core or it won't work at all in crossfire at those speeds so I've been running at 1100 1300 with +25 core...power limit at max

Try flashing a reference bios. Still the most stable I have tried on my cards. Handles 1270/1650 without the blackscreens on high Voltages.

Or try the moded 3XX bios. Sadly, mine doesn't seem to benefit much on those BIOSes.
A good quality PSU....oh! wait, you didn't talk about PSU. Is it over? LOL

My elpida card unstable when overclocked, blackscreen crash at any voltage with the modded BIOS. The hynix ones so far fine on my hynix card. Right now I'm running one card with referenced BIOS (TRI-X OC bios 1000/1300) & another card with 390 hynix modded BIOS (edited default clock 1000/1300). The drivers tend to auto-overclock the hynix card from 947/1250 to 999/1250. So I edited the default clock to 1000/1300 to satisfy my OCD. tongue.gif

Too bad you didn't get any benefit from it. I honestly didn't measure & compare the FPS between referenced & modded BIOS in games (in benchmark yes). All I know I can play GTA V fine at stock clock with the modded BIOS. Come to think of it again, I don't really need the modded BIOS because I can play games just fine with referenced BIOS anyway.
Edited by kizwan - 10/30/15 at 1:58pm
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post #40069 of 43976
Quote:
Originally Posted by kizwan View Post

A good quality PSU....oh! wait, you didn't talk about PSU. Is it over? LOL

My elpida card unstable when overclocked, blackscreen crash at any voltage with the modded BIOS. The hynix ones so far fine on my hynix card. Right now I'm running one card with referenced BIOS (TRI-X OC bios 1000/1300) & another card with 390 hynix modded BIOS (edited default clock 1000/1300). The drivers tend to auto-overclock the hynix card from 947/1250 to 999/1250. So I edited the default clock to 1000/1300 to satisfy my OCD. tongue.gif

Too bad you didn't get any benefit from it. I honestly didn't measure & compare the FPS between referenced & modded BIOS in games (in benchmark yes). All I know I can play GTA V fine at stock clock with the modded BIOS. Come to think of it again, I don't really need the modded BIOS because I can play games just fine with referenced BIOS anyway.

Funny, I was about to answer you Quality PSU claim. lolol. But I'll let it go to sleep. tongue.gif

One thing I have noticed with the modded bios is that OC'ing is a bit limited and you'll be having black screen issues if you are unlucky.

Reference BIOS like the one I am messing with right now has none of those issues on my 290. Higher OC and just a one or 2 frames behind @fyzz's on graphics tests in FS. So the benefit really matters in benchmarks.

I have also been playing around modding bioses. And I suck. lol

My unlocked 290 was put aside today so I can deal better on tuning them single card at a time.
Edited by mus1mus - 10/30/15 at 2:21pm
post #40070 of 43976
Quote:
Originally Posted by kizwan View Post

If PSU is only working at certain (low) temp, then it's not good quality PSU. The worst case scenario with good quality PSU is the efficiency may drop when the temp is higher.
I never said doesn't work or shuts down at high temp I said lower temps mean more longevity this is true for anything that stores or transmits current directly through it... cooler is better ...but no point in talking about this more...I think everyone has posted their view on it...I wouldn't recommend a crap unit that's most important...better chances of no failure regardless of if you exceed it's limits..I'm cheap so I'm always looking for a deal but some things I refuse to compromise on...personal preference...just like I don't buy store brand sodas...ironically I buy oversized cups to hold them too...lol
NEWBIE
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NEWBIE
(23 items)
 
  
CPUMotherboardGraphicsGraphics
AMD 8320e Asus Sabertooth R2.0 xfx r9 290 xfx r9 290 
RAMHard DriveHard DriveHard Drive
G.Skill rip jaws  Samsung 840 Pro WD BLUE 64MB Cache Ocz vertex 3 
CoolingCoolingCoolingCooling
Swiftech h220x  alphacool nexxos st30 280mm radiator alphacool coolplex pro LT10 100mm reservoir Swiftech h220 rad only 
OSMonitorMonitorKeyboard
Windows 7 64 Bit ENTERPRISE edition Acer 23" 1080p  asus 19" Dell Media Center  
PowerCaseMouseMouse Pad
Rosewill Photon 1200W Phanteks Enthoo Pro Logitech G5 or Steel Series MW2 edition Generic Cheapy 
AudioAudioAudio
GEMINI HSR-1000 Logitech 5.1 surround ZALMAN clip on mic 
  hide details  
Reply
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