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LAN Party Forums => Support Group => Started by: Rouen on November 17, 2009, 07:02:05 AM
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I'm getting ready to upgrade the computer again, one of the parts that needs to be improved upon is the power supply. It's an Antec 850 watt. However, my UPS only rated for 700 watts on the battery side. I don't know if the new computer will require more then 700 watts unfortunately. I'd like to avoid getting a new UPS if possible, here are the parts.
Video card http://www.newegg.com/Product/Product.aspx?Item=N82E16814130480 (http://www.newegg.com/Product/Product.aspx?Item=N82E16814130480)
Processor (130W) http://www.newegg.com/Product/Product.aspx?Item=N82E16819115202 (http://www.newegg.com/Product/Product.aspx?Item=N82E16819115202)
Motherboard http://www.newegg.com/Product/Product.aspx?Item=N82E16813131365 (http://www.newegg.com/Product/Product.aspx?Item=N82E16813131365)
Power supply http://www.newegg.com/Product/Product.aspx?Item=N82E16817371009 (http://www.newegg.com/Product/Product.aspx?Item=N82E16817371009)
Memory http://www.newegg.com/Product/Product.aspx?Item=N82E16820145224 (http://www.newegg.com/Product/Product.aspx?Item=N82E16820145224)
Two 320GB 7200RPM drives, one DVD-ROM, 7 x 80mm fans.
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Even though you have an 850 Watt power supply it won't be using 850 Watts all the time. Here is an article with someone who hooked a PC up to a Kill-a-watt meter to test how many watts are used while the system is running.
http://www.codinghorror.com/blog/archives/000353.html (http://www.codinghorror.com/blog/archives/000353.html)
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That's funny you link that. I'm at work ATM, I asked our senior tech the same question, and he reached into a drawer and produced.... tada! A Kill-A-Watt plug.
I guess I'll find out later in the week :-D
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Personally, I prefer FedEx to UPS.....oh, wait....nevermind.
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If its a APC UPS it should have powerchute and it will tel you the draw, I doubt that system would draw more than the UPS could deliver, you may only have 30 seconds of power though.
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Q: How are the "sizes" of UPSes determined?
A: Typically, a UPS has a VA rating. The VA rating is the maximum number of Volts * Amps it can deliver. The VA rating is not the same as the power drain (in Watts) of the equipment. (This would be true if the load were only resistive or the circuit were DC, not AC). Computers are notoriously non-resistive. A typical PF (power factor: Watts/VA) for some computers may be as low as 0.6, which means that if you record a drain of 100 Watts, you need a power source with a VA rating of 167. Some literature suggests that 0.7 may be a good conversion factor, but this will depend heavily on the specific equipment. Moreover, there's really no way to determine these numbers besides measuring them.
Note: Some UPSes can continue to deliver power if the VA rating is exceeded, they merely can't provide above their VA rating if the power goes. Some can't provide power above their VA rating at all. Some may do something really nasty if you try. In any case, I strongly recommend not doing this under any circumstances. Generally, the rule of thumb seems to be never drawing more VA from an UPS than about 75% of its rating.
http://www.csgnetwork.com/upssizecalc.html (http://www.csgnetwork.com/upssizecalc.html)
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This is what I use for my system and it handles it without issue ...
http://www.newegg.com/Product/Product.aspx?Item=N82E16842102048 (http://www.newegg.com/Product/Product.aspx?Item=N82E16842102048)
Here is my system data on elements that draw power.
CPU: Intel Core i7 975 Extreme
MB: Asus Rampage II Extreme
RAM: 12GB Corsair DDR3 clocked to 1800
GPU: Dual Nvidia GTX285 SSC in SLI
OS HDD: Dual 10k rpm 74 gb Raptors in Raid 0
Game HDD: 10k rpm VelociRaptor 300GB
Storage HDD: 7.2k rpm WD 1TB
Case: Cosmos S
PSU: 1050W ENERMAX REVOLUTION85+
Combo Drive: LG Blu-Ray / HD-DVD-R/RW
Fans: (11x120mm) 3x Rosewill, 1x A.C. Ryan, 6x Yate Loon, 1x AeroCool Extreme
(6 dedicated to a push pull on the 3x120mm top mounted radiator)
Fan speed & temp controls: Scythe Kaze Master Ace 5.25” 4 channel controller.
Temp monitor, Pump speed, Radiator fan speed controller: Koolance CTR-CD10
Pump: Swiftech MCP655 Variable speed (317 gph capable)
Flow meter: Koolance INS-FM17
Lighting: 3x toggle pannel wired to 6 UV CCFL tubes
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This is what I use for my system and it handles it without issue ...
[url]http://www.newegg.com/Product/Product.aspx?Item=N82E16842102048[/url] ([url]http://www.newegg.com/Product/Product.aspx?Item=N82E16842102048[/url])
Here is my system data on elements that draw power.
CPU: Intel Core i7 975 Extreme
MB: Asus Rampage II Extreme
RAM: 12GB Corsair DDR3 clocked to 1800
GPU: Dual Nvidia GTX285 SSC in SLI
OS HDD: Dual 10k rpm 74 gb Raptors in Raid 0
Game HDD: 10k rpm VelociRaptor 300GB
Storage HDD: 7.2k rpm WD 1TB
Case: Cosmos S
PSU: 1050W ENERMAX REVOLUTION85+
Combo Drive: LG Blu-Ray / HD-DVD-R/RW
Fans: (11x120mm) 3x Rosewill, 1x A.C. Ryan, 6x Yate Loon, 1x AeroCool Extreme
(6 dedicated to a push pull on the 3x120mm top mounted radiator)
Fan speed & temp controls: Scythe Kaze Master Ace 5.25” 4 channel controller.
Temp monitor, Pump speed, Radiator fan speed controller: Koolance CTR-CD10
Pump: Swiftech MCP655 Variable speed (317 gph capable)
Flow meter: Koolance INS-FM17
Lighting: 3x toggle pannel wired to 6 UV CCFL tubes
I have a similar system (See sig) and it mkaes my APC 750's alarm go off indicating theres no way the UPS could supply it.
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1500 VA & 900 Watts FTW!
its only 159.99 and free shipping. I live out in BFE PA in the woods and my power browns all the time. This thing has held up to all of it and instantly takes over without a stutter in power output.