Guust Flater Posted October 19, 2008 Share Posted October 19, 2008 Hi, I want to buy the following PC (in specs). It is possible that I buy in the future an other 4870 to use crossfire! What PSU should I buy? The VX550, TX650 or TX750? (I don't need a modular PSU.) If we look at the connectors, then the choice is easy, namely the TX750. But I think that I 'll have an idle load of less then 20% of 750W with one 4870. Is that a problem? Maybe there still is the same problem (<20%) with the TX650. And how to get 4x PCI-E 6 PIN? So maybe the VX550 now, and the TX650 or TX750 when crossfire, but that is an expensive solution. Thank you for helping me! Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 21, 2008 Corsair Employees Share Posted October 21, 2008 I would suggest CMPSU750TX minimum or our HX1000W with two of these cards. Link to comment Share on other sites More sharing options...
Guust Flater Posted October 21, 2008 Author Share Posted October 21, 2008 Thank you RAMGUY for the fast reaction! :): Isn't the idle load of less than 20% of the total power a problem? We don't see that area on the efficiency chart. http://www.corsair.com/_images/charts/tx750w_efficiency.jpg It can take more then a year before I'll use crossfire. (Or maybe never) So I guesse I 'll first have an idle load of approximate 100W (= 13% total power TX750). Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 21, 2008 Corsair Employees Share Posted October 21, 2008 At idle the PSU would not be as efficient as it could be, but its not going to hurt the PSU to run at less than a 20% load. Link to comment Share on other sites More sharing options...
Guust Flater Posted October 22, 2008 Author Share Posted October 22, 2008 Ok thank you. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.