Seasonic x750 gold and cf6970?

[jijoslin]

I HAVE A 750 WATT SEASONIC GOLD PSU AND i JUST ORDERED TWO HD6970'S, THE REST OF MY RIG IS AMD965CPU A SINGLE 1TB HARD DRIVE AND 8GB G SKILL RAM, IS THIS PSU BIG ENOUGH?

 

[ko888]

I think the Seasonic X-Series X-750 (SS-750KM) just meets the minimum +12 Volt continuous current rating of 62 Amps recommended for a 2-way CrossFireX system.

I doubt there is much, if any, headroom for overclocking.

 

[saint19]

I'd go for something more bigger, 850W or above.

 

[henydiah]

HD6970 is hungry power, if running at crossfire power Consuption is 550-590 W and http://www.legitreviews.com/article/1488/18/
http://www.tweaktown.com/articles/3741/amd_radeon_hd_6970_2gb_video_card_in_crossfire/index16.html

you need more power than 750 if run at crossfire minimal 850W for safely,

 

[lilotimz]

IIRC the X750 can pull up to around 900w when pushed hard. It'll work with the crossfire 6970 but you'll be somewhat pushing it ( don't overclock too hard).

 

[jijoslin]

My cpu is overclocked from 3.4ghz to 3.91ghz, and I plan on using catylyst to overclock the hd6970,s my ram is stock, only one hd, and an asus crosshair 3 mobo, I hope I'll be within power consumption limits

 

[jijoslin]

I think the Seasonic X-Series X-750 (SS-750KM) just meets the minimum +12 Volt continuous current rating of 62 Amps recommended for a 2-way CrossFireX system.

I doubt there is much, if any, headroom for overclocking.

My cpu is overclocked from 3.4ghz to 3.91ghz, and I plan on using catylyst to overclock the hd6970,s my ram is stock, only one hd, and an Asus crosshair 3 mobo, I hope I'll be within power consumption limits

 

[sportsfanboy]

Total system power draw is around 600w according to AmandTech--------> http://www.anandtech.com/show/4061/amds-radeon-hd-6970-radeon-hd-6950/24

So that Seasonic should handle it, it will have to work pretty hard though.

 

[henydiah]

I know power watt konsumption crossfirex hd6850 but we must calculation again with power consumption cpu overclock 3.9ghz ?, and other hardware

 

[ko888]

An AMD Phenom II X4 965 BE revision C3 overclocked to 3.9 GHz draws 4.5 Amps more from the +12 Volt rail under 100% CPU load when compared to running at a stock clock of 3.4 GHz.

Since the intent is to also overclock the two Radeon HD 6970 graphics cards there really isn't enough of a safety margin (i.e. +12V reserve capacity) to do that reliably with the Seasonic X-Series X-750 (SS-750KM).

You shouldn't be running any of the power supply's rails at its maximum rating for any length of time. It over-stresses the power supply's components shortening its life.

 

[jijoslin]

okay what if I run my cpu and gpu's at stock, then will I be okay?

 

[ko888]

okay what if I run my cpu and gpu's at stock, then will I be okay?

You should be able to until you're able to get a power supply with more capability.

 

[jijoslin]

okay thanks for the info

 

[jijoslin]

Rosewill BRONZE Series RBR1000-M 1000W Continuous@40°C, 80Plus Bronze Certified,Modular Cable Design,ATX12V v2.3/ EPS12V,SLI Ready,CrossFire Ready,Active PFC"Compatible with Core i7, i5" Power Supply. This is the psu I'm getting, hope its enough

 

[jijoslin]

Best answer selected by jijoslin.

 

[saint19]

This topic has been closed by SAINT19