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 Posted: Thu, 7th Nov 2013 19:02 Post subject: Any suggestions for a new PSU? |
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Hey so I am in a a need for a new PSU and everyone who I have encountered seems to suggest that anything from Rosewill is good, but unfortunately they don't sell any of them here, so I am looking for some good alternatives.
It needs to power
i7 3770
1 SSD + 2 HDD
20GB RAM
780 GTX
I would also like to future proof it a little bit so it should be more than 700W.
Maximum price around 150€
I tried looking into Corsair's more expensive models, but the ones I looked have pretty bad reviews about reliability.
My current PSU is 4 years old and still kicking, but it is quite weak 450W, so ideally something reliable would be superb.
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| Posted: Thu, 7th Nov 2013 19:24 Post subject: |
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Check if you can find some Super Flower and Sea Sonic for sale at your retailer's (they also manufacture for other brands), they're some of the best PSUs around. Doubt you'd need 700+ though unless if by future-proofing you meant going SLI/CF.
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Werelds
Special Little Man
Posts: 15098
Location: 0100111001001100
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| Posted: Thu, 7th Nov 2013 19:57 Post subject: |
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Future proof for what, exactly? Very few things actually require more than 700W. A pair of 780 Ti's or 290(X)'s will require just over 700W if you want to overclock, but aside from that? No.
Look for anything built by Seasonic really, those are easiest to find in Europe. Neither Super Flower nor Rosewill are particularly easy and usually when you do find them, it's at a premium that's not worth it.
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| Posted: Thu, 7th Nov 2013 20:09 Post subject: |
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I've got a Seasonic 860w Platinum. Thing is a fucking beast and of course power efficient given the platinum efficiency rating. Pricey though.
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Keit
Posts: 1134
Location: Sweden
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| Posted: Thu, 7th Nov 2013 23:02 Post subject: |
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Coolermaster V1000
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=344 9.7/10
I have this one, completely silent, decent price, completely modular, japanese caps, seasonic built. Gold standard but according to jonnyguru it has the efficiency of a platinum rated unit.
I was almost going to buy a Corsair AX860 but they have so much problem with coil whine and fan noises that made me decide against it. The V1000 is a seasonic rebranded as coolermaster with great build quality, makes it less pricy than the Seasonic brand name ones too, at least from what I could find at the time.
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Keit
Posts: 1134
Location: Sweden
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| Posted: Fri, 8th Nov 2013 10:03 Post subject: |
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Forgot to say, the V1000 is just the highest wattage of the model line, there is also V700 and V850 at 700W and 850W each. Might wanna look into that if you feel 650W is too little.
You can see PSU requirements for GPU's here: http://www.realhardtechx.com/index_archivos/Page362.htm
According to them 850W is recommended for 780 Sli, so 650W would be too little. And if you overclock your GPU's they will require even more power. Better be safe than sorry and having to upgrade yet another time down the line.
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| Posted: Fri, 8th Nov 2013 10:19 Post subject: |
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1kw is overkill and a waste of money for his usage.
Remember that if you buy too large of a power supply you are just wasting energy.
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Werelds
Special Little Man
Posts: 15098
Location: 0100111001001100
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| Posted: Fri, 8th Nov 2013 10:35 Post subject: |
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| Axeleration wrote: | | Just wondering, can that 650W model take on 780SLI ? |
Yes, it can. It'll be operating at 80-90% capacity under load, but it can take it just fine. Seasonic's 650W units can sustain some 645W, so even if you have a K version of your 3770 and overclock it to like 4.5, that'll still work just fine.
I'm on one of them, btw 
You won't have overclocking headroom though. For that you do want a 750W unit. And if you have a heavy OC on your CPU, an 850W is advisable for efficiency's sake (see further below). But that is only assuming you overclock all parts and quite heavily so, I might add.
| Quote: | | (There are couple of reviews saying that 750W fried mobo up) |
Eh? I've never heard anything about that, where you getting that from? 
| Keit wrote: | | According to them 850W is recommended for 780 Sli, so 650W would be too little. And if you overclock your GPU's they will require even more power. Better be safe than sorry and having to upgrade yet another time down the line. |
850W is exaggerated.
A stock 780 uses about 270W in Furmark, about 220 in actual realistic loads. Even if I take that 270W though, that means a pair of them will draw 540W. There is nothing you could stuff in your PC besides one of Intel's retarded Extreme editions or AMD's 95xx that will munch through another 210W on a decent 850W unit. Even if you take a 130W CPU and overclock that so it sits at like 170, you're still not there. With all stock components you're looking at 670W total consumption with Furmark + 100% CPU load 
Keep in mind that when choosing a PSU, you realistically want to look at sitting between 20% and 80% load as much as you can. Below and above those respective thresholds, PSU efficiency takes a nose dive. Temporary peaks above 80% are fine, just not good for sustained use; that's fine though, because if you take Furmark + Linpack/Prime/IBT consumption as a guideline for 100%, in games you'll generally sit at about 70-80% of that. So taking the numbers above, let's assume 300W each for a pair of overclocked 780's, add 180W for an overclocked x770K and you're looking at 300 + 300 + 170 = 770W. Add some for leakage, hard drives, motherboard circuitry, you're *maybe* looking at touching 800W in total under extreme load. Again though, that's assuming a heavily overclocked *everything*. The second you don't overclock any of these parts, you start dropping in PSU tiers rapidly. |
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Keit
Posts: 1134
Location: Sweden
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| Posted: Fri, 8th Nov 2013 11:56 Post subject: |
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| Mchart wrote: | 1kw is overkill and a waste of money for his usage.
Remember that if you buy too large of a power supply you are just wasting energy. |
Wasting energy? The PSU will only generate as much power as is needed for the components.
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Stige
Posts: 3544
Location: Finland
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Werelds
Special Little Man
Posts: 15098
Location: 0100111001001100
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| Posted: Fri, 8th Nov 2013 12:19 Post subject: |
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| Keit wrote: | | Mchart wrote: | 1kw is overkill and a waste of money for his usage.
Remember that if you buy too large of a power supply you are just wasting energy. |
Wasting energy? The PSU will only generate as much power as is needed for the components. |
I suggest you go read jonny's properly.
When idling, your PC consumes around 100W at most. On a 1000W unit, that means you're sitting at 10% usage. At 10%, the efficiency curve has dropped below 80%, in bad units it can drop to as little as 50-60%. Even at 80% efficiency though, with 100W consumption it is in fact already pulling 125W out of the wall and thus also emitting 125W in heat for no reason at all. More heat = more wear on the components
Again, you want to stay above 20% and below 80% for general use as much as you can. |
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Stige
Posts: 3544
Location: Finland
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Keit
Posts: 1134
Location: Sweden
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Werelds
Special Little Man
Posts: 15098
Location: 0100111001001100
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| Posted: Fri, 8th Nov 2013 13:15 Post subject: |
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@ Stige: yes, your Super Flo...err, Rosewill unit is a good one. With one exception: the terrible fan. I don't know how old yours is, but keep an eye on it. The second it starts rattling, replace it. The Tachyons have exceptionally cheap fans, which is a damn shame. And it does need them.
@ Keit: yeah, but they're not cheaper than the real Seasonic units here; in fact, the V1000 is slightly more expensive than the Platinum 1000 
And keep in mind that Seasonic do a 7-year warranty on them, CM only do 5
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Stige
Posts: 3544
Location: Finland
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| Posted: Fri, 8th Nov 2013 13:38 Post subject: |
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| Werelds wrote: | | @ Stige: yes, your Super Flo...err, Rosewill unit is a good one. With one exception: the terrible fan. I don't know how old yours is, but keep an eye on it. The second it starts rattling, replace it. The Tachyons have exceptionally cheap fans, which is a damn shame. And it does need them. |
I'll keep that in mind, not that I can really hear it though over music/rest of the fans in the case >.<
I guess I'll propably hear it when I go to sleep if it starts going bad.
Thanks for the heads up.
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Werelds
Special Little Man
Posts: 15098
Location: 0100111001001100
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| Posted: Fri, 8th Nov 2013 14:10 Post subject: |
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Yeah you want to just test that when it starts spinning up. When you first put some load on it, there's a point where it spins up; a few seconds after it starts rotating faster, there's a point where it'll sound like an unbalanced fan for maybe 2-3 seconds. When it then rotates even faster the noise goes away again, but it's those few seconds where you can tell that it's near the end of its life
The unit itself will be fine, you just need to replace the fan (or if you can easily get the whole unit replaced, just do that ).
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Stige
Posts: 3544
Location: Finland
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Werelds
Special Little Man
Posts: 15098
Location: 0100111001001100
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| Posted: Fri, 8th Nov 2013 14:36 Post subject: |
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Oh no, the sound will be long before that. Somewhere between 200-250W depending on how old it is (older PSU will be slightly hotter, so fan starts spinning up sooner). You might be lucky and not get a bad one, but their bearings are pretty terrible.
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Stige
Posts: 3544
Location: Finland
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| Posted: Fri, 8th Nov 2013 14:53 Post subject: |
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| Werelds wrote: | | Oh no, the sound will be long before that. Somewhere between 200-250W depending on how old it is (older PSU will be slightly hotter, so fan starts spinning up sooner). You might be lucky and not get a bad one, but their bearings are pretty terrible. |
Guess I should hear it immediatly then if it does happen, I sit at 200-250W usage on normal use constantly basicly.
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W123
Posts: 2503
Location: USA
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| Posted: Sat, 9th Nov 2013 00:11 Post subject: |
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Avoid Rosewill. Had to RMA 2 of them. Ended up tossing the 3rd in the trash and getting a Corsair. It was the "Green Series" 630watt.
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Stige
Posts: 3544
Location: Finland
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| Posted: Sun, 10th Nov 2013 05:35 Post subject: |
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Thanks all.
Ordered SeaSonic 750W .. we'll see how it goes.. and about that mobo story. That was taken from the newegg site. So there is that, but it seems that all PSUs have at least some % of defective units to make it noticeable.
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