SeaSonic G Series SSR-550RM 550W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply $59.99 After Rebate + Free Shipping

Maybe some people here think you need 1000W for SLI...

Some people are just suckers for marketing =P.

Quote from tonyftw : Shows how much you know. A good quality 500-600w psu, can easily sli/crossfire two low/mid end cards. Good deal.

http://www.guru3d.com/articles_pa...ew,14.html

Quote : GeForce GTX 560 Ti On your average system the card requires you to have a 500 Watt power supply unit. GeForce GTX 560 Ti in 2-way SLI A second card requires you to add another ~175 Watts. You need a 700+ Watt power supply unit if you use it in a high-end system (800+ to a KiloWatt is recommended if you plan on any overclocking).

You were saying?

Quote from Longchamp : http://www.guru3d.com/articles_pa...ew,14.html You were saying?

Did you even check the test system specs?

If you can afford that kinda rig, the price of the power supply is probably the least of your worries. Anything not built balls-to-the-walls will run fine on a 550w.

Quote from EnzoFX : Maybe some people here think you need 1000W for SLI... Some people are just suckers for marketing =P.

Yup. The only people who really need 1000W PSUs are the ones running fully internal water cooling pumps and tri SLI.

Quote from Longchamp : http://www.guru3d.com/articles_pa...ew,14.html You were saying?

You didn't answer anything. You can still sli/crossfire two low/mid-end cards with this unit.

You can find plenty of people online, powering two 670's alongside an ivy/sandybridge rig,
with a good 650w psu. It's only an issue if your cpu is a nuclear reactor, otherwise this is
an sli capable power supply. (Key word, two low/mid end cards).

Kill-a-watt is glorious.

Quote from Caeruleas : Did you even check the test system specs? If you can afford that kinda rig, the price of the power supply is probably the least of your worries. Anything not built balls-to-the-walls will run fine on a 550w.

Exactly. That test system, is a lot more power hungry than let's say, an ivy bridge rig.

Quote from EnzoFX : Maybe some people here think you need 1000W for SLI... Some people are just suckers for marketing =P.

Can I run 2x 6950's on 550watt corsair?

I find modular psu's to be a gimmick because I end up using all of the plugs anyways.. Just throwing this out there. Otherwise this is a solid psu. Will easily run any single card configuration.

I see that people are saying that it will run xfire and sli configs, but i don't like the idea that your rig is sucking 90% of max power. Plus psu's degrade over time so it might not handle the load in 2-3 years. imo I would go with a good 600 - 700w psu for multi gpu's

wow this is good deal but i already have that 750w seasonic from last deal. should i return it and get this to save 50 bucks?

Quote from Mr.Ritz : Can I run 2x 6950's on 550watt corsair?

It is very close, if you are running a high OC on your CPU and the, 6950s have unlocked shaders to 6970s with or without OC then NO. You would need a good 650W supply. When i Stress my Cpu ( 3930k @4.6ghz to 100% ) and both 6950s that are unlocked and OCd to 940/1420 to 100% my wattage at the socket is 700W. I also have 2 1tb drives in raid 0 and two SSD drives in Raid 0 Plus 4 fans ( Gt AP-15s ) and one waterpump ( mcp-655 ). If you have a high end cpu then i would go for the Seasonic x750 because you never want to stress your PSU to 100% all the time.

Quote from thebtran : wow this is good deal but i already have that 750w seasonic from last deal. should i return it and get this to save 50 bucks?

depends on your rig. if you oc stuff and have 2 or more gpu. I would just keep it and save the hassle of returning.

Quote from AznCracker : I see that people are saying that it will run xfire and sli configs, but i don't like the idea that your rig is sucking 90% of max power. Plus psu's degrade over time so it might not handle the load in 2-3 years. imo I would go with a good 600 - 700w psu for multi gpu's

True. Then again, gpu's are becoming more and more power efficient by the year.

This power supply is perfect for single card configured rigs, and more than enough for most.

current gen gpus and cpus use way less power than past gen gpus... 600 series much more efficient than 500 series!

OOS already

I'd like to test my rig to see what kind of power I'm currently drawing under load. Kill-O-Watt seems to be a physical device though...

Are there any software-based ways to find this info?

Quote from Longchamp : http://www.guru3d.com/articles_pa...ew,14.html You were saying?

Maybe you should have left in:

Quote : Our test system is based on a power hungry Core i7 965 / X58 system. This setup is overclocked to 3.75 GHz. Next to that we have energy saving functions disabled for this motherboard and processor (to ensure consistent benchmark results). On average we are using roughly 50 to 100 Watts more than a standard PC due to higher CPU clock settings, water-cooling, additional cold cathode lights etc.

Yes, cold cathode lights in the testbed. This wasn't listed in the part about test equipment, nor what kind of water-cooling was used, nothing about drives...so lord only knows.

It also says:

Quote : Measured power consumption System in IDLE = 201W System Wattage with GPU in FULL Stress = 449W Difference (GPU load) = 248W Add average IDLE wattage ~ 50W Subjective obtained GPU power consumption = ~ 298 Watts Mind you that the system wattage is measured from the wall socket and is for the entire PC. Below, a chart of measured Wattages per card. With 2-way SLI we noticed our power consumption for the cards peaked to roughly 298 Watts, that's JUST the two cards, not the entire PC.

So it would seem that full stress number is for the 2-way SLI since the 298s match up...but that would mean their system (which they already said "On average we are using roughly 50 to 100 Watts more than a standard PC") was using 449W...but then they say a second card uses 175W more....so is that saying that one card would use 449 - 175 = 274W? That can't be right. Is it just too late for me to think or does that article make no sense?