• Is 750W enough for 770 SLI?
    34 replies, posted
[QUOTE=Activeellis;41737917]Definitely not. It is a bad idea to overcompensate for power in the realm of PSUs.[/QUOTE] Is it though?
[QUOTE=Brt5470;41738074]Is it though?[/QUOTE] Too much and you lose efficiency, as there is a PSU efficiency curve and you want to stay within it. Of course you don't have to but it's a waste of money in the from of an hugely overprovisioned PSU for the load it's going to power. Remember, you can get quality supplies throughout the wattage range, all the way from 300w to 1500w.
But I don't see the efficiency changing much if you get a quality unit. Mine is supposedly most efficient at 45-50% load at 88% efficiency, and at 90% load it's at 87% efficiency, and I didn't think I got a super duper power supply. I'm just saying, even outside of the curve it's not that inefficient and the difference there is is within such a small margin which is like maybe 6-10watts difference in powerusage/heat produced. That's like half a phone charger. And going off the efficiency of the stats of my unit, it's most efficient at half load, which would be perfect for me and him actually. I have the believe of overdoing it on a quality unit as you'll keep using it for a long time. I originally bought my PSU back in 2011, and it's now in like it's 4th build I don't think I'll ever have to worry about upgrading it unless it simply fails on me. I mean if think you'll never go higher end, then yea I agree just get a more quality unit at a lower wattage. But he's already thinking of dual 770's. [url]http://www.anandtech.com/show/3992/1000w1200w-highend-psuroundup/13[/url]
A lot of great posts here. I don't really agree with the statement of needing 1000W's tbh. I'm thinking about just either getting a 760 SLI or a 770 for now tbh. I'm probably just gonna get a brand new rig soo in 2 years.
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