ULx Posted October 1, 2009 Share Posted October 1, 2009 Need a bit of help here, I am wowed by corsairs 620HX look, i love the braided individual cables, but wasn't sure if it was enough to handle my system? Do i need to bump to the 750? Does the 750 have braided cables? Thanks!! Link to comment Share on other sites More sharing options...
Wired Posted October 1, 2009 Share Posted October 1, 2009 TX750 - yes HX750 - those that are permanently connected, yes. The modular cables have their own covering. Not sure what the power consumption of the 5850 is, but you should be fine with the H620 or HX650. If you're thinking about upgrading in the future you may want to bump it up a bit. Link to comment Share on other sites More sharing options...
ULx Posted October 1, 2009 Author Share Posted October 1, 2009 Ok here is a GREAT review by the folks at Anandtech.com http://www.anandtech.com/video/showdoc.aspx?i=3650&p=13 As you can see under full load a i7 Vanilla setup with 5850's running Crossfire will draw about 550W (good lord) so the 620 @ 80% efficiency will push 496W guaranteed? Side note with games running wow will push around 372w looks like the 750 is the winner. I've seen individual braiding for the wires on some of the PSU's not just 1 braided sleeve but multiple tiny ones. Does the 750 model have this? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 1, 2009 Corsair Employees Share Posted October 1, 2009 If the system draws 550W max, then our 620W is good for this setup. Our HX series PSUs are guaranteed to deliver rated specifications at 50ºC. Link to comment Share on other sites More sharing options...
Wired Posted October 2, 2009 Share Posted October 2, 2009 The efficiency doesn't work like that. It's not 620W * 0.80 = 496W, it's 775W * 0.80 = 620W. In otherwords, it will draw up to 775W to produce 620W assuming 80% efficiency. From the website: Did some napkin math and came up with this table. [table=head]Percentage|Output|~Efficiency|~Input from wall 20%|124W|82%|151W 40%|248W|84%|295W 60%|372W|84%|443W 80%|496W|83%|598W 100%|620W|82.5%|752W [/table] Link to comment Share on other sites More sharing options...
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