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Phaedrus Quick'n'Dirty PSU calculator - Page 26

post #251 of 337
Quote:
Originally Posted by nawon72 View Post
What does everyone think of this PSU article by SilverStone?
That's BS, most of the time, you would be putting a load that is lower than ~750W which is where the 2 lines cross each other. Because of that, the 1000W would actually be more efficient. That is, if it's for a folding rig that will be at a 900-1000W load 24/7 it could be worth it. For a regular build, get a PSU with the proper wattage and it will actually be more efficient. It's just because Silverstone probably makes more money on the higher wattage units and wants you to buy those.
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post #252 of 337
Quote:
Originally Posted by leisure View Post
This is a great guide. I did notice, like the others, that the 6970 was bumped up in wattage.

When I bought my system, a 6970 crossfire setup was suggested at 650w, now 750w. I bought a 750w PSU to give ample overhead. I haven't OC'd or put it under heavy load yet, but I was planning on it. Now I'm a little nervous.

My specs are

i5 2500k @ 3.0 w/ hyper 212+ cooling
Asrock p67 4extreme b3
2x R6970s in crossfire @ stock settings
4gx2 g.skill ripjaw
1tb 7200rpm hd
120gb ssd

According to the guide that would put me at 750w - 25w (i5 subtraction) = 725w. But it doesn't look like I'd be able to overclock my cards at all, as with the original post gave the suggestion that I could with the 100w overhead.
This calculator includes headroom for overclocking both the CPU and GPUs up to a reasonable level. If you wont overvolt the GPUs or put the CPU at ~5GHz then you will be perfectly fine.
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My Gaming Rig
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CPUMotherboardGraphicsRAM
Intel Core i5 2500K @ 4,5GHz - 1.296 volts MSI P67A-GD55 Asus Strix Geforce GTX 970 4GB Mushkin Enhanced Silverline Stiletto 2x4GB 1333... 
Hard DriveHard DriveHard DriveHard Drive
Seagate Barracuda 7200.12 1TB Seagate Barracuda 7200.12 500GB Toshiba HDKPC08 3TB Samsung 840 Evo 120GB 
CoolingOSMonitorKeyboard
Corsair Hydro Series H60 Windows 8.1 Professional x64 BenQ G2420HD 24" 1920x1080 IBM Model M2 French Canadian Layout '93 
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Mushkin Enhanced Joule 1000W Modular Antec DF-35 (Modded) Razer Deathadder 3500 DPI Mionix Sargas 900 
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post #253 of 337
Quote:
Originally Posted by leisure View Post
This is a great guide. I did notice, like the others, that the 6970 was bumped up in wattage.

When I bought my system, a 6970 crossfire setup was suggested at 650w, now 750w. I bought a 750w PSU to give ample overhead. I haven't OC'd or put it under heavy load yet, but I was planning on it. Now I'm a little nervous.

My specs are

i5 2500k @ 3.0 w/ hyper 212+ cooling
Asrock p67 4extreme b3
2x R6970s in crossfire @ stock settings
4gx2 g.skill ripjaw
1tb 7200rpm hd
120gb ssd

According to the guide that would put me at 750w - 25w (i5 subtraction) = 725w. But it doesn't look like I'd be able to overclock my cards at all, as with the original post gave the suggestion that I could with the 100w overhead.
The guide factored overclocks into the recommendation. Unless your running some epic water or sub zero setup, don't worry about overclocks.
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dominator gt Samsung 840 EVO Samsung 840 EVO Samsung F3 
Optical DriveCoolingCoolingCooling
DVD burner XSPC Raystorm RX360 D5 
CoolingCoolingOSMonitor
Alphacool Repack D5 Kingpin CPU pot Windows 7 Dell U2211 
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post #254 of 337
I guess what was making me nervous was only having about a 25W overhead.
post #255 of 337
Quote:
Originally Posted by leisure View Post
I guess what was making me nervous was only having about a 25W overhead.
yeah those numbers of his are figured with overclocking assumed.

I wouldnt touch the powercaps on the cards though
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Intel E5-2670 intel E5-2670 Asus Z9PE-D8 WS Visiontek R9 390 
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8x4GB DDR3 1333 ECC Registered Toshiba 5TB X300 Seagate 4TB HGST 4TB 
Hard DriveHard DriveHard DriveHard Drive
Sandisk 240GB Sandisk 480GB Samsung 830 128GB Toshiba 6TB X300 
Hard DriveHard DriveOptical DriveOS
Toshiba 5TB X300 Toshiba 5TB X300 WH16NS40 Windows 10 Pro 
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post #256 of 337
According to the charts seem like a decent 400W PSU will power my brother's reference 4870 and Core 2 Duo just fine.

planning to purchase
http://www.newegg.com/Product/Produc...82E16817815007

always i thought i needed a lot more. Thanks Phaedrus!
post #257 of 337
Thread Starter 
Quote:
Originally Posted by tianhui View Post
According to the charts seem like a decent 400W PSU will power my brother's reference 4870 and Core 2 Duo just fine.

planning to purchase
http://www.newegg.com/Product/Produc...82E16817815007

always i thought i needed a lot more. Thanks Phaedrus!
I ran a Core 2 Quad an a 4870 on an Antec Earthwatts 430W, so yup.

However, I strongly recommend a different power supply. The 500W version of that unit was tested with the +12V ripple hitting 119mV. The spec is 120mV. That's pretty bad. Built by good old mediocre Compucase.


Try a Corsair CX430v2 or Antec NeoECO 400C instead.
post #258 of 337
picked up Asus rog matrix 580 and want to keep my 560ti/H70mod plus everything else in my sig plus a scythe 6 fan controller not listed, small bamboo pen writy thingy. My fans arnt average fans also. right now im using a GX750w and im rated for a 700w, will that be ok. Im going to oc the living .... out of everything
post #259 of 337
Thread Starter 
GX750, as in CoolerMaster GX750? If so, what's the full model # listed on the label? There are two versions. One is mediocre. The other is downright god awful. I need to know which.
post #260 of 337
Thread Starter 
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