600 Watt psu for GTX 275 2-way SLI

[alaa]

Hello
I want to buy a GTX 275 card and after sometime I want to SLI.
Is the FSP EPSILON 600Watt psu can support these cards knowing that Iam going to oc them ?
My system is:
E8400 @ 4.0Ghz 1.4V
2x2GB DDR2 800 Mhz Kingston
W.D 500GB SATA HDD.
Pioneer DVD-RW DVR-216D
OCZ VENDETTA 2 CPU COOLER.
Please answer !
Thanks

 

[Veesofnaught]

Well, according to NVidia you need at least a 550 W power supply for your system with one card.

http://www.nvidia.com/object/product_geforce_gtx_275_us.html

If you are going to SLI and overclock in the future I would recommend getting a little bit more powerful PSU. Also, remember that the PSU is something you don't want to go cheap on because you can use the same one on multiple builds and configurations.

 

[alaa]

Will my system lag because of this psu ?

 

[alaa]

If yes what psu you recommend ?

 

[michaelmk86]

Will this psu bottleneck my system ?

Wrong use of the word bottleneck.

 

[IzzyCraft]

by bottleneck he means wont even start up yes well most likely esp after you oced your cpu putting more stress on the psu! Even a super high quality 600w psu would not run 2 275 maybe 2 GTS 250's. Anyways you don't want your psu always near max load you want your psu near 40-50% load for best efficiency also the more load the more heat and the more you'll wear out your psu faster.

 

[spathotan]

You should be looking at a Corsair 850W. They run around $135. Or you can get the PCP&C equivalent for $250 and feel sore in the shorts afterwards.

 

[Soul_keeper]

With that massive overclock and those two beast cards you're gonna really be pulling some juice
I agree with spathotan ATLEAST 800 imo

 

[alaa]

Will a 700W Cooler Master or Thermaltake Toughpower be enough or I should go for the Corsair 850W ?

 

[spathotan]

Considering the price difference....get the Corsair.

 

[alaa]

Unfortionatly Corsair is not availabe in Lebanon .
There is a Point of View Black Diamond 850W modular PSU which is relatively cheap wrt TT or Cooler Master.
What you guys recommend ?

 

[dirtmountain]

2- GTX275s in SLI will use about 300 watts at load, an overclocked to 4.0GHz E8400 system without GPUs will also use about 300 watts at load. A minimum of 750w power supply would be required to not overstress your PSU, 850w is even better. I agree with the zipman that the 850w Coolermaster would be a good choice.

http://forums.atomicmpc.com.au/index.php?showtopic=264

 

[Snuffles]

i7 920 @ 3.8
6 HHDs
2 optical
2 GTX 295
Raid card
X-Fi
1 750 Silencer

An 850 would be like shooting a duck with a Bazooka

 

[spathotan]

Youre walking on thin ice Snuffles with 750W. Dont mislead the OP.

 

[Bluescreendeath]

i7 920 @ 3.8
6 HHDs
2 optical
2 GTX 295
Raid card
X-Fi
1 750 Silencer

An 850 would be like shooting a duck with a Bazooka

^ What?
2 GTX295? So that's 4 GTX260s?

And a OCed I7?
With 6 HDDs and 2 Opticals and other stuff?


All of that on a 750 watt PSU? Something smells fishy...

4 power hungry GTX260 GPUs, a heavily OCed quad core, and multiple HDDs and drives requires a something along the lines of a 1200watt PSU.

 

[Bluescreendeath]

Youre walking on thin ice Snuffles with 750W. Dont mislead the OP.

I call shannegins on his post. If he really has all that on a 750watt PSU, then his computer should've exploded the moment he turned it on.

 

[spathotan]

I call shannegins on his post. If he really has all that on a 750watt PSU, then his computer should've exploded the moment he turned it on.

Agree. The Two GTX 295's alone will need a solid 700W. Hell, a system with a single GTX 295 will want 650W+

 

[mamw93]

Not nearly enough. Get the Ultra 100 watt modular PSU... it's AWESOME!!!! Will provide adequate power for years to come.

 

[alaa]

Oc'd E8400 to 4.0GHz will use 300 watt ???!!!!
I dont think so dirtmountain, can you explain please ?

 

[invisik]

Yes it should work but you might be limited to high end overclocks.

 

[dirtmountain]

I meant your entire basic system without the graphic card will use about 300w at load, with the E8400 at 4.0/1.4v . That includes your HD, burner, RAM, cooler, case fans and any peripherals.

 

[Snuffles]

Youre walking on thin ice Snuffles with 750W. Dont mislead the OP.

Not misleading him at all.

Ive witnessed 2 systems running PC Pow and Cool 750 silencer with 2 GTX295.

To be honest I was as shocked as you all are, but no need to call me a LIAR.

 

[Snuffles]

Ummm more like shooting an Abrams tank with birdshot.
Not to mention, what if he upgrades his video cards down the road, you want him to buy yet another power supply?

What could he possibly upgrade to with Die shrinks lowering the power needs of the latest and greatest GPUs. The only 2 cards more power hungry are the ATI 4870 x2s.

 

[Bluescreendeath]

Not misleading him at all.

Ive witnessed 2 systems running PC Pow and Cool 750 silencer with 2 GTX295.

To be honest I was as shocked as you all are, but no need to call me a LIAR.

Where exactly did you witness this? Youtube?

3 possibilities
1. It really wasn't a 750 watt PSU...you confused it with something else
2. That guy was lying to you.
3. That guy's PC has already died.


According to newegg, the 750watt PC& Cool silencer PSU has 60amps on a single rail, while a single GTX295 requires a minimum of 46 amps alone.

So two GTX295s would require 92 amps. And that's the graphics card alone - not even including the quad core i7 with significant overclock. And running 6 HDDs and multiple optical drives?

All of that sounds like complete bullsh*t.

 

[Snuffles]

Agreed you couldnt use it for Benchmarking but not too many ppl will ever use the full wattage caps in their systems. Running any video game will use no more than 2 cores as for the 2 GTX 295s nothing can dent them.