New
#31
Oh man, a build thread that I missed! I'm slacking lol. I read/skimmed through most of this thread and found there's not much I can add to it. Is there anything you are still on the fence about?
Building a new computer, help/info needed!
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New #32
Hehe no worries, better late than never right?
Well I think I'm pretty much set really, can't think of anything at the moment that I need answered, though in the near future when I've assembled everything I might need some advice regarding overclocking and various software, but I'm not worried about that right now.
The only thing I really gotta do now is go through TwoCables latest post, the long one regarding the choice of PSU, he's making me really doubt my decisions hehe. But he seems like he really knows what he's talking about, so I'll have to read through his post and have another look at power supplies.
But thanks for offering your help, I'll be sure to make a post if anything comes up.
- Drops
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New #33
Are you still going with the 7850 graphics card?
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New #34
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New #35
Just wanting to get an idea of what kind of PSU's you need to be looking at. It recommends at least a 500 watt PSU for that card, which is no problem. What is your budget for a PSU?
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New #36
The 500W power supplies they are referring to are peak-rated. Most 500W peak-rated PSUs have a continuous capacity of about 350-375W (it varies from PSU to PSU). These kind of PSUs are always low-quality units. The kind of PSUs we're looking at - such as the HX750 that he's looking at - are quality-made continuous-rated units. This means the HX750 can easily deliver 750W 24/7 if it's ever needed.
A quality-made 450W power supply is the kind where it can deliver 450W 24/7 if it's ever needed. This would be overkill for powering a system that has one 7850 in it.
The general rule of thumb is, subtract 100W from the recommendation. So, a 400W quality-made power supply would be more than enough.
Here's proof (it's a copy/paste from my bigger post above with minor changes to fit this reply better):
AMD Radeon HD 7850 and 7870 review - Hardware setup | Power consumption
With one 7850 under full load in their system, their PSU pulled 256W from the wall outlet. Their CPU was idling, so I have to add 150W for an overclocked 3570K at 5 GHz (I can prove it). So with the 7850 under full load at the same time as the overclocked 3570K, the PSU would then be pulling 406W from the wall outlet. This means that if the PSU is 85% efficient while pulling 406W from the wall outlet, then the system is pulling 345W from the PSU. This means a quality-made 400W power supply is way more than enough, and this is why AMD recommends a 500W peak-rated PSU.
However, this is an unrealistic situation because to start with, this is a simultaneous maximum load between the 7850 and the 3570K. In addition to that, I'm talking about the 3570K being overclocked to 5 GHz which probably isn't going to happen on a board like the P8Z77-V LX. I'd expect about 4.5 to 4.7 GHz with that board. To top it all off, the actual gaming load would be closer to about 225 to 250W - maybe 275W. The 7850 does not pull that much power at all.
If you're worried about future upgrades, then don't: each new generation of CPUs and GPUs requires less power than the previous.
If you're worried about a PSU's degradation over time, then don't: quality-made PSUs like the ones we're talking about are not affected by this enough to even be considered because they use high quality internal components that are designed to last several years before degradation is really even noticed.
Then there's the matter of efficiency: with the tiny load that he would always have on the HX750, he'd be lucky to see 80-85% efficiency. So he wouldn't get the Gold type of efficiency due to the small load on the PSU:
On PSU Efficiency
PSU "50% Load" Myth
There is one PSU that jumps out in my mind that he would be able to have for several years to come: the 450W SeaSonic G Series. Corsair used SeaSonic G Series units to make the newer Gold-rated HX series PSUs like the Gold-rated HX750.
If that 450W number is still scary, then there's the 550W SeaSonic G Series. Sure there are others I can recommend, but I'm just kind of throwing these out there for now.
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New #37
Well, I will give you my recommendations, which are also what several forum members will recommend........Corsair or Seasonic. Probably the best on the market as of now, and both are actually made by Seasonic USA. The Corsair AX750 is a top-notch PSU, fully modular, 750 watts, 80+ Gold, and comes with some of the best factory cables I've ever seen. The SeaSonic X750 Gold is basically identical to the Corsair AX750, except the cables aren't quite as "custom" looking. They are all made quite well, but the Corsair cables are all black, with some sleeving on them, which looks really nice. The SeaSonic uses multi-colored wiring, and also has some black sleeving, but isn't quite as nice looking as the Corsair. I have the SeaSonic X750 and what part of the cable you can see doesn't look bad at all. Of course, that may not even bother you. Either of those will do more than you need but will last you for years.
Edit: I wasn't suggesting a 500 watt power supply....just that since it required only 500 watts, it should be easy to find one. I'm well versed on good power supplies and bad power supplies. Also, you may notice that the higher wattage power supplies, which are the more popular ones, are on sale more often, and sometimes are actually less expensive than a lower watt unit. True, he could get away with a 450-500 watt, but if he ever wants to throw in another graphics card, the extra power from a 650/750 watt PSU will be there.
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New #38
Oh, there's more than Corsair and SeaSonic:
FAQ: Recommended Power Supplies
They're just 2 options among many.
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New #39
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New #40
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