850W PSU???

[netburst]

Hi guys,
Im a little bummed out, i wanted to upgrade my PSU cuz i will be SLiing my rig soon cuz im using a 8600GTS and i have a spare 8600GTS that was given to me... so i ran eXtreme PSU calculator and it gave me a result that kindda made my jaw dropped. It stated that i would need a 877W PSU to run safely for more than 1 year??? but currently, im using 450W PSU and my system is absolutely fine... Does going sli almost double my power usage??

My Current Rig

Intel Core 2 Duo 6420
Asus P5N-E SLi
2X WD 320GB HDD in RAID 0
4X 1GB Team Elite DDR2-800 RAM
DVD-RW
Floppy
Gigabyte 8600GTS
6X 12CM Case fan
Coolermaster Twin Aurora CCFL
Coolermaster Extreme Power 450W PSU

Any comments?

 

[evongugg]

My calculations get 22-24 amps on the 12v rails if you SLI. Look for a power supply with 22-24 amps on the 12v rails.

http://forumz.tomshardware.com/hardware/PSU-101-ftopict198276.html

 

[lunyone]

My calculations get 22-24 amps on the 12v rails if you SLI. Look for a power supply with 22-24 amps on the 12v rails.

http://forumz.tomshardware.com/hardware/PSU-101-ftopict198276.html

If you calculations are correct, I'm doubting his current PSU can handle the load. He's a link to a similar PSU, but only has 19A on the 12V rail.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817171007
It's probably time to upgrade your PSU to something better, if your going to SLI them. This PSU would be the minimum that I would use with your current setup: $58 shipped after $20 MIR's
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371006

or if your wanting to get a much better PSU and cash in on a $45 MIR, check this Antec 550W PSU for $60 shipped!
http://www.newegg.com/Product/Product.aspx?Item=N82E16817103941

My 2cp's

 

[zenmaster]

The Chart is wrong, not sure if it was you or the chart.

See -
http://www.tomshardware.com/2007/08/21/energy-efficient_computing_options/page5.html#single_graphics_cards

You can see that two 8600GTS use less watts than a single 8800GTS.
The 550w Neopower would be fine.

 

[netburst]

thanks for the replys...
at the eXtreme Power Supply Calculator web page, i entered my rig, set the tdp to 90% and the cap aging to 20% and the total came to around 850W.. But i guess a 550 ~ 600W psu should be enough rite? i can only get coolermaster only. i guess the coolermaster 600W iGreem PSU should accomodate just fine.

 

[mike99]

Re-check calculation, http://www.extreme.outervision.com/PSUEngine gives 300W for single 8600GTS and 352W for SLI, Goes to 422 with 20% capacitor aging. Even two 8800GTS is only 549W! 8800ULTRAs = 609W.

Mike.

 

[turtle1]

A quality PSU at 600 watts and you are fine...

 

[Abrahm]

thanks for the replys...
at the eXtreme Power Supply Calculator web page, i entered my rig, set the tdp to 90% and the cap aging to 20% and the total came to around 850W.. But i guess a 550 ~ 600W psu should be enough rite? i can only get coolermaster only. i guess the coolermaster 600W iGreem PSU should accomodate just fine.

When you put in your system, did you put single processor or dual processor? You need to put Single processor, even though it is a dual core, it is still 1 physical processor in one socket. This is usually what people do when they get extremely high power requirements on a PSU calculator.

 

[StevieD]

When you put in your system, did you put single processor or dual processor? You need to put Single processor, even though it is a dual core, it is still 1 physical processor in one socket. This is usually what people do when they get extremely high power requirements on a PSU calculator.

There be your problem.

 

[netburst]

Ok my bad... thanks for the feedback... i guess i accidentally selected dual processor...

Cheers

 

[ryanthesav]

get the ant 850 its not that much and its rock solid.

 

[ryanthesav]

ALSO!!

 

[ryanthesav]

then u dont have to worry about ur comp blowing up when ocing!!

 

[netburst]

the only problem is tat where i come from (malaysia) not even da major distributors have heard of antec (yeah sad i know..) will be getting a 600W iGreen PSU frm coolermaster... they got quite good reviews but i kindda saw it as a tier 3 PSU some where on toms..