What powersupply will be needed for Haswell Box?

[hackmole]

Since Haswell is only going to need about 10 watts, what kind of powersupply will be needed for a Haswell box. Some people tell me you need at least a 600 watt powersupply for a Haswell box. I think you can probably get by with a 250 to 300 watt powersupply. I really don't understand why anyone would need 600 watts.

 

[A5]

It varies widely by what you're planning on putting in your system, but almost all single-GPU systems can get by on 400W or less.

And desktop Haswell won't be a 10W part. Stuff I've seen is saying 84W for desktop.

 

[aaksheytalwar]

A high end gpu system needs at least 600 watts to be safe. And more with high CPU and gpu oc and many hdds.

 

[Puppies04]

Since Haswell is only going to need about 10 watts, what kind of powersupply will be needed for a Haswell box. Some people tell me you need at least a 600 watt powersupply for a Haswell box. I think you can probably get by with a 250 to 300 watt powersupply. I really don't understand why anyone would need 600 watts.

I think you might be getting a little confused between haswells mobile and desktop parts. 10W will be for low power mobile, high performance desktop parts will be around 60-80W.

As for what power supplies will be required if you wanted a standard quad core system with no GPU a solid (no $20 cheap PSU will deliver its rated watttage) 200-250W PSU would be fine just as it would with a SB/IB system of the same spec.

If you want to OC and/or add a stock or OC'd GPU to the equation then you make allowances for that as well although it is a known phenomenon for gaming rig builders to go completely over the top when choosing PSUs. I am one of these people and I always try to make sure any rig that will be OC'd has at least 20% headroom when it comes to the PSUs maximum draw after factoring in likely OC'd power consumption.

 

[VirtualLarry]

I think you might be getting a little confused between haswells mobile and desktop parts. 10W will be for low power mobile, high performance desktop parts will be around 60-80W.

Now are these the same dies, off of the same assembly line at the fab? Or are they two different designs? (One on HP process, one on LP or ULP process?)

 

[Ed1]

IMO, when it comes to PSU I try to pick a unit that my max sustained wattage will be 50% on PSU capacity . This way PSU stays cool with plenty of overhead and will generally be at higher efficiency than running it at 80%+ of unit .

If your using only IGPU as others have said than low wattage would be fine ,but depending on GPU and how many I would go 600w if there in performance types ,higher end scale .

 

[Puppies04]

Now are these the same dies, off of the same assembly line at the fab? Or are they two different designs? (One on HP process, one on LP or ULP process?)

You would have to ask someone who knows a bit more about Intels manufacturing process however if I understand correctly all 1155 mobile and desktop parts are based on the same chip so if I was going to guess I would say yes.

Anyone got a better answer than that?

 

[Zap]

I'd say... a PSU that met ATX specifications...

 

[IGemini]

I did a preliminary build with parts around the same price points and figured a 450W Seasonic gold PSU would work just fine on a system running a 3570K with a 7950. The Haswell and Sea Islands parts I'd actually use would be even more power-efficient, especially since the 8870 would be around the current 7950 price would also use a bit less power.

 

[Lepton87]

1.2Kw is enough for my 4 gpus and an overclocked CPU so for a single card 250W+150W cpu+100W everything else. 500W should be fine for an overclocked system unless nV releases 350W 7B xtor single GPU monster. Hell, I would highly welcome 500W 4 Slot single gpu if it handily beats my current rig even in tests that have near perfect scaling. I don't want to deal with multi-gpu bullshit ever again. Alas I think the days of 500mm2+ 300W very fast single gpus are gone So maybe with time there will be improvements to multi-gpu like not waiting a month to play a game, not ever having CF working in a low profile game etc.

IMO, when it comes to PSU I try to pick a unit that my max sustained wattage will be 50% on PSU capacity . This way PSU stays cool with plenty of overhead and will generally be at higher efficiency than running it at 80%+ of unit .

Do it with my rig, good luck finding 2kW+ PSU.

 

[NTMBK]

500W should be fine for an overclocked system unless nV releases 350W 7B xtor single GPU monster. Hell, I would highly welcome 500W 4 Slot single gpu if it handily beats my current rig even in tests that have near perfect scaling. I don't want to deal with multi-gpu bullshit ever again. Alas I think the days of 500mm2+ 300W very fast single gpus are gone

Given that the GK110 die (currently already used in the Tesla K20) is 7.1Bn transistors, you might be in for a pleasant surprise.

 

[tweakboy]

You need to buy a PSU it doesnt come with it right ?

 

[Lepton87]

Given that the GK110 die (currently already used in the Tesla K20) is 7.1Bn transistors, you might be in for a pleasant surprise.

I highly doubt it'll perform on par with GTX690 .Unfortunately that's how much processing power is needed to outperform my graphics cards when CF works just right. I think I'll have to wait to the next process shrink to have even more raw graphics power in a single GPU.

 

[dave_the_nerd]

The same one you have now will probably be fine.

 

[A5]

You need to buy a PSU it doesnt come with it right ?

You're joking, right?

 

[dave_the_nerd]

You're joking, right?

I hope so.