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My new (really) powerful build - Page 5

post #41 of 73
http://vr-zone.com/articles/vr-zone-exclusive-silverstone-sst-st45sf-450w-sfx-psu-reviewed/8805-2.html

Drawing between 530 and 550w from the wall running benchmarks.
post #42 of 73
Quote:
Originally Posted by HybridCore;12480718 
Why are people getting Sandy Bridge? It drives me crazy. Get Bulldozer. Will probably be less expensive and more powerful.

Where can I see a SFF bulldozer?
post #43 of 73
Thread Starter 
Quote:
Originally Posted by hellonwheelz;12480689 
The 2600k has a tdp of 95w. It will be less than that as your not using video...
GTX 580's TDP is 244 watts.. and the fsp made silverstone 450 will put out 450w.

You've got headroom to do *some* overclocking too.

I love to hear this. Why are people's opinions so different? And what to believe? tongue.gif
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post #44 of 73
Quote:
Originally Posted by [Nuc];12483728 
I love to hear this. Why are people's opinions so different? And what to believe? tongue.gif

Thats from more inexperienced people.

They may have done it themselves and then they tell everyone it is safe to do so.

It depends on the power supply maker too. If it is some cheap on like Ultra, it will most likely be over rated for how much power it can supply and crap out taking out your computer.

If it is a good one like sea sonic, then chances are it can handle it, but you are still cutting it VERY close. and there is no need to chance it when a decent power supply with plenty of wattage can be had for around 100$ or less.
You could sell your old psu and get a good name brand (get reviews on it from pheadrus, he is the PSU man) that will be safe FOR SURE for your system.

I don't understand why people under estimate the power supply. you don't see a performance increase from upgrading it. Maybe that is why.
You may not see a performance increase but it is easily the most important part of any computer ever built.

cpu takes 95W
mobo takes alot, maybe 50 watts
graphic card takes 244watts
hard drives take 10watts (most have two hard drives atleast)
fans (depending on how many) can take 10-50 watts.

Worst case scenario ends up being
459Watts total.

overclocked is even more.

running a 450 watt psu at 420watts is almost 100% load, and if it is not a quality psu, it won't put out what it is rated for. Power supplies degrade over time and won't put out as much wattage.

So chance it is you want, but when you start getting random BSOD's and wonder what it is from, thinking it is your graphic card screwing up, then your motherboard, ALL the problem is is your PSU sucking because you didn't shell out a little more cash. Then your computer fry's and dies.
Edited by Crucial09 - 2/22/11 at 1:25pm
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post #45 of 73
Thread Starter 
How about the calculation above? That's 339 total, plenty of power left, no?
The Silverstone PSU's are great I've heard

Edit: wow, I am ignorant. Forgive me.
Edited by [Nuc] - 2/22/11 at 2:26pm
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post #46 of 73
Many even most psu don't live up to their specs. Some don't shutdown properly. I, of course, sent a link showing the FSP made PS exceeding specs. It's not a amazing test, but they are using real hardware that sucks up plenty of juice and no problem.

Please people read... he hasn't once said he wants to overclock. He does want to put this system together.

P67 boards use 50w? your source? Plenty of modern HD's use less than 5 w peak. 4x120mm fans is 10w.

If your getting fresh air to the PS, and your reference design 580 blows all its hot air out the back it will work.

You should be able to overclock to a point where some benchmarks can get close or exceed to the power supply wall but your buying a PS that has been independently tested multiple times to overload properly. OTOH you probably can't overclock to that extreme anyways, given that you only have so much space for a CPU cooler.
post #47 of 73
@Crucial09

You keep on saying he should get a more powerful PSU, but you seem to be missing the point that the 450w Silverstone unit is the most powerful that will fit; the SG05 only supports SFX power supplies.

Also, your power draw estimates are... off base, to say the least. 50 watts for fans? Really? Maybe if you've got a dozen or more or they're 150cfm screamers. Yeah, you can find 120x38mm fans that do 200cfm at 4500rpm and pull 20w, but if you value your hearing at all (like most people) you'll stick to <2000rpm fans, and those only pull 2-4w each. You'll be hard pressed to fit more than a couple in such a small case anyway.

Keep in mind power draw of a component is usually the maximum it can draw, not what it actually will draw 99% of the time. It's also very hard to make all the components draw their maximum power at the same time. Take a look at these charts which show the difference between idle, typical 3D (e.g., gaming) and max 3D (e.g., furmark) power draw for video cards. Idle is maybe 10-15% of max for current gen cards, while gaming is 60-70%. Unless you enjoying benching, you're not going to see 100% power draw on a video card.

Another thing you should be aware of is that most reviews measure the wattage at the wall, which means it's the total power draw including the power lost to the PSU's inefficiency. Most PSUs are 80-87% efficient, so the measured power draw is going to be ~15% more than the components are actually drawing.

Xbitlabs is one site that measures actual power consumption of the components directly, including the individual rail loads. Read this article for a good overview of what a system actually needs. Even their highest end gaming system (though somewhat outdated) barely uses 500w under maximum benchmarking conditions.

Also - re: "good quality" vs. "bad quality" PSUs: some cheap and/or older PSUs are rated at XXX watts but if you look at the individual rails most of the current is available on the 3.3v and 5v rails. Modern computers draw most of their current from the 12v rail, so that's what you need to look at when selecting a PSU. It's quite possible for a PSU rated at 300w to have more current available on the 12v rail than one rated at 400w, which would probably make the former a better choice.
post #48 of 73
OP,

Doing a bit more research the gtx 580 has software blocks to keep it from drawing more than ~23 amps. I think this modern card will be a perfect fit. Your PS has been independently tested at 36A on the 12v rail http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=196

Other posters are going to put crap about headroom, however, you'll have it. Pull the P/S air from outside the case and you won't need to ever derate the ps. BTW, it performed well hot too! Not sure how many posters are going on about you need a quality supply, It's already been mentioned it's from FSP which is quality.

If you were near the margin I'd be searching for a low voltage 2600k, undervolting one of those @ stock speeds will be very power frugal. As it is you should have some room for overclocking the cpu.
post #49 of 73
Okay... this is kinda funny... anyhow.


On the serious side, the Silverstone 450W PSU is utter crap.
I know the same guy started both threads, however, different members contributed to either one. The overall concensus? For upto 300W, the PSU is fine. Past 300W, it's a worthless POS.

As for the SG05, it will fit a GTX580 (I only read the first and last page, sorry frown.gif), with modding. Just dremel a section of the inner metal case, and it will fit the reference GTX570/GTX580 (I had a GTX570 in my SG06 case, cj3waker has a GTX570 in his SG05 case, both of us use reference eVGA GTX570 models, not the nonref "HD" variant.

As for SG05 vs SG07, I have one of my own pics....
Quote:
Originally Posted by ablearcher;12404222 
I know some people are interested... (SG07 is also short of 1CM taller). It's not any wider, that's the case feet doing some work with shadowing.
dsc00015lg.jpg

I have another SG05, with an E7200 + HD5770, but it's at work right now. Maybe next week for 4 way?
That's, from top to bottom, the SG05 (empty), SG06 (i3 530/GTX460), SG07 (X3440/GTX570). The SG05 in the pic is the 450W PSU variant, my other SG05 and SG06 are the 300W variants. From personal experience, I know the "450W" PSU is crap.
Edited by ablearcher - 2/23/11 at 12:24am
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post #50 of 73
Thread Starter 
I'm pretty sure it Will fit. Cooling Night be a problem. Afaik it doesnt blow air out ón the outside. Btw posting this from iPhone with autocorrect sucks
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