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Legatus Lanius

2135 Posts

May 24 2011 15:12 GMT

#5881

bronze is 83% iirc. higher efficiency means less heat wastage but i think its really fucking marginal so just get the cheaper one (assuming everything else is equal)

Myrmidon

United States9452 Posts

May 24 2011 15:22 GMT

#5882

80 plus certification tests power supply efficiency (and power factor, and maybe one or two other things, but not everything at all) at 20%, 50%, and 100% of rated capacity. They test at room temperature, which doesn't represent realistic operating temperatures unless your PSU draws air from outside the case and is isolated from the system.

Required efficiency at 20%, 50%, and 100%:

80 plus  - 80 80 80
bronze   - 82 85 82
silver   - 85 88 85
gold     - 87 90 87
platinum - 90 92 89

Even a 10% change in efficiency wouldn't change your power bill much, and that's the only direct benefit of higher efficiency. Higher efficiency means that less heat is generated by the PSU, so there is less heat to expel. Some high-efficiency PSUs take advantage of that by using lower-airflow, quieter fans or less aggressive fans speeds for less noise, but this isn't always true. There are a lot of mediocre to bad power supplies that are 80 plus bronze, 80 plus gold, etc. because they simply focused on high efficiency and cut corners on power output quality, build quality, and internal components.

Legatus Lanius

2135 Posts

May 24 2011 15:26 GMT

#5883

any particular reason why platinum's 20 and 100 percent figures dont match like every other efficiency level?

sixfour

England11062 Posts

May 24 2011 20:22 GMT

#5884

thanks to those that gave me hints with builds (quite a) few pages back. boxen arrived today, thing's running nicely. now to get round to actually buying the thing i wanted to get it for and start 4 gating

xdthreat

United States95 Posts

May 24 2011 22:36 GMT

#5885

To everyone looking for builds, I just wanted to recommend the i5-2500k that everyone else is recommending. I just built my system last week, and with 4gigs of ram I can stream 4v4's on highest in game settings with 720p/25fps. Of course the day before my parts came I developed some carpal issues so I can't even play...

Myrmidon

United States9452 Posts

May 24 2011 23:00 GMT

#5886

On May 25 2011 07:36 xdthreat wrote:
To everyone looking for builds, I just wanted to recommend the i5-2500k that everyone else is recommending. I just built my system last week, and with 4gigs of ram I can stream 4v4's on highest in game settings with 720p/25fps. Of course the day before my parts came I developed some carpal issues so I can't even play...

For future reference, could you elaborate on the i5-2500k clockspeed (did you overclock it? how much?), codec used, streaming program used, bitrate, quality settings, game fps, etc.? Thanks. Sorry to hear about the wrist.

xdthreat

United States95 Posts

May 25 2011 00:25 GMT

#5887

On May 25 2011 08:00 Myrmidon wrote:

For future reference, could you elaborate on the i5-2500k clockspeed (did you overclock it? how much?), codec used, streaming program used, bitrate, quality settings, game fps, etc.? Thanks. Sorry to hear about the wrist.

Will edit in more details once I am home from work, and I will see if the same performance comes from a stock clockspeed:

i5-2500k overclocked to 4.2k. xsplit -> justin tv. quality is set at 7 or 8. Using a 4?meg bitrate. I haven't yet pushed any limits with the OC or streaming, just punched in some numbers and they worked.

http://www.justin.tv/xdthreat/b/286481815 example of quality if you can judge from the VOD. My work computer can't handle watching it lol. Discalimer : Trying to get adjusted to new mouse/keyboard/monitor/desk setup with a hand in a splint.

Progamermatt

United States79 Posts

May 25 2011 02:42 GMT

#5888

On May 23 2011 10:03 Progamermatt wrote:
I was going with this build, but im buying within the next 2 days and it says the psu is out of stock. Any replacements? Or should I really just wait?

Show nested quote +

Still waiting on money to transfer to my paypal account. One of my teachers said I'd need at least a 500watt psu for this build. True? I was going with the evergreen 380watt. (any difference if I were to ever overclock?)

skyR

Canada13817 Posts

May 25 2011 02:51 GMT

#5889

A core i5 2500 uses around 60w during full load and a 6850 uses around 100w during full load. Add in 100w for other components and an overclock on both the CPU and GPU, you're still not going to exceed 300w.

Progamermatt

United States79 Posts

May 25 2011 02:53 GMT

#5890

That's what I thought. Thank you.

Progamermatt

United States79 Posts

May 25 2011 17:23 GMT

#5891

Intel Core i5 2500k & Gigabyte P67 UD3 Combo @ $335
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.642509

GSkill 2x2GB 1333MHz @ $40
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231253

MSI Radeon HD6850 Cyclone PE @ $157 ($137 after mail in rebate)
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127576

Western Digital Caviar Blue 500GB @ $45
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136769

XFX Core Edition 450w @ $55 ($45 after mail in rebate)
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207012

Coolermaster Elite 330 @ $40
http://www.newegg.com/Product/Product.aspx?Item=N82E16811119115

DVD Drive @ $21
http://www.newegg.com/Product/Product.aspx?Item=N82E16827135204

Windows 7 Home Premium x64 @ $100
http://www.newegg.com/Product/Product.aspx?Item=N82E16832116986

That was the build given to me by SkyR. I'm changing the PSU to everwatt green 380watt, though, since this one is out of stock. I was told that was fine. However, the ram must be purchased as a combo, so I switched it with http://www.newegg.com/Product/Product.aspx?Item=N82E16820231277. That alright? Thanks.

JingleHell

United States11308 Posts

May 25 2011 17:25 GMT

#5892

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231396

Better price on RAM.

Progamermatt

United States79 Posts

May 25 2011 17:27 GMT

#5893

Alright. I'll order that instead. I just fell attracted to the lame heatsinks, lol. So I'm good to order now?

JingleHell

United States11308 Posts

May 25 2011 17:32 GMT

#5894

Should be, yeah, I'm not going to argue with a skyR build. Just fyi, if the heat spreaders on the RAM are coming into effect, you either have the weirdest airflow known to man, or much bigger concerns.

Progamermatt

United States79 Posts

May 25 2011 17:33 GMT

#5895

It just looked cool. I am definitely just going to save myself some money and buy what u recommended.

Umilard

Sweden38 Posts

May 25 2011 18:55 GMT

#5896

I would get a better CPU cooler when overclocking, Cooler master hyper 212 is great for it's price and is probably enough for a stable 4.5 oc.

Myrmidon

United States9452 Posts

May 25 2011 20:13 GMT

#5897

It's good, but it's not worth $40 when the apparently equivalent (roughly) but quieter Xigmatek Gaia is going for $30:
http://www.newegg.com/Product/Product.aspx?Item=N82E16835233082

Just to make sure the earlier comment about the PSU was a typo, you're looking for the Antec Earthwatts Green EA-380D ($40):
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371033

Progamermatt

United States79 Posts

May 25 2011 20:23 GMT

#5898

it indeed must have been a typo, since that is the psu im getting.

FragKrag

United States11567 Posts

May 25 2011 21:14 GMT

#5899

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026

is a better choice for a psu :p

Gemini_19

United States1258 Posts

May 26 2011 02:21 GMT

#5900

I have a problem now that when I try to start up my new computer it starts up, but nothing proceeds to happen. No BIOS screen, no OS disk recognition. Just a started up computer with a blank monitor.

Everything seems to be working fine, the fans are working etc.

What could be the problem..?