new core i7 system wich PSU?

[Sniper1010]

Hello hardwaredeluxx members,

I came here for good advise since you where very helpfull in the watercooling topic, the watercooling components wich i already ordered. I already ordered my pc components still waiting and if needed i can still change components...

These are my pc components:

Lian Li Tyr PCX-500 case
Be Quiet! Dark Power Pro 650W or 750W or Corsair brand psu?
Intel Core i7 920 (do) overclocked to 3.0 or 3.2ghz
Intel Postville ssd 80gb (G2)
EVGA X58 SLI LE motherboard
EVGA GTX260 super clocked
Mushkin XP3-12800, 6GB, PC3-12800, 1600 MHz, cas 7-8-7-20.
Western Digital Caviar Black 500 GB, 7200 Rpm, 32 MB
Sony Optiarc dvd burner
Cherry G80-3000 keyboard black
Razer Salmossa mouse
6 or 7 case fans 3 for radiator the rest for the case (Noiseblocker NB-Blacksilent XL1 Rev.3 120mm)

Pump itself aquastream XT uses 5watt

What PSU do you recommend me?

The psu can handle all these components i know that....
But i heard that its best to have some "headroom" with the psu this headroom is not ment to be used for future upgrades like SLI wich i never do, perhaps in the future an upgrade to a new generation GT300 gpu 40nm wich hopefully is more energy efficient and uses less WATTS then the gtx260.

I heard that if your components use say 400wat you generaly buy a 500watt quality psu. But its better to have a 600watt psu not for upgrade like sli but for BETTER STABILITY (the bigger the psu the more AMPS i have and the less stress on the psu for more stability...i think) so the psu is not working at its max output. I hope you understand me...

Als il be using 6 or 7 case fans 3 for radiator and 3 or 4 for the case itself, so please consider that to. And also i little OC cpu 3.0 or 3.2ghz

Ok now comes the important question wich brand of psu should i buy that is QUALITY ROCK SOLID and STABLE and offcourse sillent!

I got 2 options here Bequiet dark power pro 650 or 750w
or Corsair HX750 750 Watt? I heard Corsair uses top quality parts in their psu like japanese solid capacitators. But i do think Bequiet psu are of high quality to. Since Bequiet is a GERMAN brand i think i'm at the right place for advise

(I will not use SLI)
So what psu to get 650 or 750watt? and wich brand Bequiet or Corsair?
Please help

Thanks in advance help is much appreciated

 

[fortunes]

A 650W PSU should be more than enough. I still use a BQT P7 650w psu for the system listed in my signature. And it takes ~400W at full load.

A 650W psu would still be enough if you want to buy a overclocked GTX295 (max. 300W usage). So a 650W psu would be enough for now and the near future. May be you need a new one when new power-cables for VGA-energy-supply are needed.

The brand is your own decision. Maybe a BeQuiet Dark Power Pro P7, an Enermax Modu+ or a Corsair HX. But a minimum of 600W.

 

[HisN]

Just to show how much a i7 overclocked and a 285 GTX really takes.
http://www.xbitlabs.com/articles/video/display/xfx-gf-gtx285-gtx295_16.html#sect0

You can substract at least 40 Watts for the smaller Graphicscard.
I guess a 500W PSU will do fine. No need for 600 or 700 Watts.
The other parts of your system takes only Peanuts compared to Graphicscard and CPU.

 

[fortunes]

PSU have their best efficiency between 50% and 75% of their max output. Driving a psu near max. output will cause less life endurance of it's "inwards".

And how many watts will future graphics need? Newer generations never use less power at all.

 

[Sniper1010]

Thanks for the reply's

Is it true you only can use 4 case fans with the Bequiet dark power pro?
And what brand should i take? I narrowed it down to 2 brands Bequiet or Corsair....?

 

[Killburn]

The Enermax Pro82+ or Modu82+ are worth having a look a them. They are very efficient and built at a very high level of qualitiy. They are very silent (the fan is always around 500rpm). You will do fine with a Pro82+ or Modu82+ (only if you want to have modular cables) 525W. You wont need more than that. 600W are only needed if you want to build a CF or SLI System.

I would prefer buying an Enermax or a Corsair PSU. BeQuiet has some struggles in quality and a few bad experiences came up lately.

 

[KOKOtm]

Thanks for the reply's

Is it true you only can use 4 case fans with the Bequiet dark power pro?
And what brand should i take? I narrowed it down to 2 brands Bequiet or Corsair....?

I bought a 550W bequiet Dark Power pro, and if you want to overclock, it is not enough, because the PSU is on it's limit, makes a high soughing Noise. My old 600W Superflower PSU specified also for 600W gets very hot with the new i7, so my watts needed must be near 600W, because usually it was quiet und cold with a C2D@3.8 Ghz. No wonder, the new i7 needs 100W more under 100%CPU on all threads.

So better look for a minimum of 620W. If you use the PSU Calculator on the bequiet homepage, it would also specify 750W for Single-Card, 1000W for Dual SLI, but here i would say, it is too much.

i bought a Corsair 750W now, because it's also specified for Dual-Cards and cost only 10$ more than the 620W. On some Overpower-Tests the Corsair also was stable to 912W and stays quiet and cold...so there is enough room to do SLI or Crossfire. The cables are also better than from the bequiet, are smaller and easier to hide in the case.
Ok, you loose the ability to use 4 more case fans (or 8...on one connections both fans don't have to use more than 12V), but better buy some Y-cables and put them on the mainboard or something like that.

---------- Beitrag hinzugefügt um 07:43 ---------- Vorheriger Beitrag war um 07:37 ----------

Just to show how much a i7 overclocked and a 285 GTX really takes.
http://www.xbitlabs.com/articles/video/display/xfx-gf-gtx285-gtx295_16.html#sect0

You can substract at least 40 Watts for the smaller Graphicscard.
I guess a 500W PSU will do fine. No need for 600 or 700 Watts.
The other parts of your system takes only Peanuts compared to Graphicscard and CPU.

The Core i7 nearly idles on games...380 Watt on 50% CPU usage can be true, but if there is any application that uses all 8 Threads on 100%, you can add 80+ Watt. I have no calculator, only my home system here in real tests, and the 550W and 600W are on their limit (440Watt@80% for a 550W PSU). So use the graph, better add 80W and you get 460W you want to achieve with your new PSU. This makes 575W to be at 80% max output. So round up to 600W and you have your new PSU.

I think the 650W bequiet can also work, but the high soughing sound from the PSU, if it comes to 80+% discouraged me from buying a bequiet again. The equivalent would be the Corsair 620HX, and if you want to think about SLI or dual-cards in the future, invest 10-15$ more for the 720HX.

 

[fortunes]

Some guys really think that adding the power consumption of all components is the sum for the psu. But as I mentioned before: "Driving a psu near max. output will cause less life endurance of it's "inwards"." Also the speed of the inner fan will increase.

So 100W more power would be better than 50W near max. output.

@Sniper... These case fan cables are used for case fan controlling by the psu. You should prefer to link these case fans directly to the mainboard or with some slow down adapters to the psu because the psu activates the case fans when temperature in psu is rising, not in the whole system. The psu can't monitor the full system heat.

 

[Gahmuret]

I would look for a gtx260² graphiccard (the superclocked have 192 shader processors and the gtx260² has 216).

 

[Opteron]

I would look for a gtx260² graphiccard (the superclocked have 192 shader processors and the gtx260² has 216).

Hmmm good point .. but the whole system is still unbalanced with a 260², e.g. a i7 with a 260² would be slower as a Phenom2 with a 275.

Furthermore the OC goal with 3-3,2 GHz is not really challenging.

Thus I would at least wait for the cheaper i5 plattform and pair it with a better GPU or buy an AMD now.

bb

Alex

 

[Gahmuret]

further more he can take a gtx275 or 4890 when he wants .
But a gtx260² is a nice card and i like i7 920s

 

[Opteron]

But a gtx260² is a nice card and i like i7 920s

Sure, fine card, but if he's just looking for the best bang for the buck, it's a bad choice ;-)

 

[Gahmuret]

dont know where he buys, but the gtx260 and gtx260² are nearly the same price in germany. The evga ssc is also very expensive thanks to the fact that the manufactor let them pay for the oc of the card. The most gtx260² are cheaper as the the evga

 

[Sniper1010]

Thank you very much guys for all the reply's.
(this is my secret place to come very helpfull people)

Ok so there where some post regarding the Bequiet psu it makes noise above a certain point. So i did some researching i think il go for the Corsair HX620. A lot of people on the net opt for the Corsair psu's because of the build quality and is also sillent.

As for the EVGA GTX260 superclocked version 55nm, it costs here in holland 190 euro. The reason i didnt opt for a gtx275 or gtx285/295. Well these other gpu's just use a lot of juice (Wattage). Perhaps il upgrade in 1 or 1,5 year to a new high end gpu for now i'm good with the gtx260.