gutcheck Posted December 4, 2009 Author Share Posted December 4, 2009 Is there any PSU out there where it is OK'ed by the manufacturer to have 2 5970's? Can we talk about that here? Link to comment Share on other sites More sharing options...
Wired Posted December 4, 2009 Share Posted December 4, 2009 Basically Corsair is not recommend it, so its up to us to decide.Clarify that. They said they don't recommend 2 OC'd 5970s, which was the exact question of this thread. Is there any PSU out there where it is OK'ed by the manufacturer to have 2 5970's?Yes. Can we talk about that here?Only if it's a CORSAIR PSU :) Link to comment Share on other sites More sharing options...
gutcheck Posted December 4, 2009 Author Share Posted December 4, 2009 But guys, hold on. An OC'ed 5970 would draw a max of 400 and if it has a dedicated 40 amp rail, then that is OK. The 5870 at STOCK would only pull a max of 186, and it could be on the rail with the CPU, yes? (the non modular cables). So thats only a total of 586 for the cards. Thats not bad, no? Link to comment Share on other sites More sharing options...
lee63 Posted December 4, 2009 Share Posted December 4, 2009 Clarify that. They said they don't recommend 2 OC'd 5970s, which was the exact question of this thread. Are you saying it would be Oked buy Corsair...after reading the ATi 5970 PSU list I don't think they would. But who knows :roll: I just did this http://extreme.outervision.com/psucalculatorlite.jsp with 2x5970 and everything in my rig OCed = 756w @ 100 load. Link to comment Share on other sites More sharing options...
Wired Posted December 4, 2009 Share Posted December 4, 2009 That's why I'm asking you to clarify it. One video card would certainly be fine by anyone's calculations. Link to comment Share on other sites More sharing options...
lee63 Posted December 4, 2009 Share Posted December 4, 2009 That's why I'm asking you to clarify it. One video card would certainly be fine by anyone's calculations.I think Corsair would NOT recommend running a 5970 and a 5870 on the same PSU..that's what I mean. But like I said "who knows" Link to comment Share on other sites More sharing options...
gutcheck Posted December 4, 2009 Author Share Posted December 4, 2009 Oh they have to. It's only a total of 486 Watts TDP, thats nothing! I had 3 5850's with no issue. Wired, can we get some official answers as to all possible configs? 2 5870's, 2 5970's, a 5970 and a 5870.... Etc? Link to comment Share on other sites More sharing options...
lee63 Posted December 4, 2009 Share Posted December 4, 2009 Oh they have to. It's only a total of 486 Watts TDP, thats nothing! I had 3 5850's with no issue. Wired, can we get some official answers as to all possible configs? 2 5870's, 2 5970's, a 5970 and a 5870.... Etc?Well this is what ATi shows. I also think we need official answers as to all possible configs. :laughing: http://img248.imageshack.us/img248/7440/atib.png Link to comment Share on other sites More sharing options...
gutcheck Posted December 5, 2009 Author Share Posted December 5, 2009 That list says a PSU from a competitor can handle 2 5970's. That just doesn't make any sense at all. It has 2 rails, 30 amps ea. Corsair has 40 amps each rail. This is so confusing. Link to comment Share on other sites More sharing options...
lee63 Posted December 5, 2009 Share Posted December 5, 2009 That list says a PSU from a competitor can handle 2 5970's. That just doesn't make any sense at all. It has 2 rails, 30 amps ea. Corsair has 40 amps each rail. This is so confusing.Yes its confusing...I guess we'll never know unless there's an official comment, which I'm patiently waiting for. Link to comment Share on other sites More sharing options...
Wired Posted December 5, 2009 Share Posted December 5, 2009 Well ATI's correct, that PSU CAN handle those video cards. They don't say if it can handle the rest of the system with them however :) Link to comment Share on other sites More sharing options...
gutcheck Posted December 6, 2009 Author Share Posted December 6, 2009 Well I have a 5970 and a 5850 on a hx1000 right now and it seems to be OK. The way I see it is it is less power then 2 x 295's, which is OK by Corsair, so I just don't get it. I can get the 5970 up to 5870 clock speeds on stock voltage, so I'm gonna run with it. Link to comment Share on other sites More sharing options...
FEAR6655 Posted December 6, 2009 Share Posted December 6, 2009 Dual 5970's really would be fine on the HX1000, the card draws a measured max of 295w or about 25A, which is almost identical to that of the 4870 X2. Link to comment Share on other sites More sharing options...
gutcheck Posted December 6, 2009 Author Share Posted December 6, 2009 Dual 5970's really would be fine on the HX1000, the card draws a measured max of 295w or about 25A, which is almost identical to that of the 4870 X2. But if you OC it you can pull almost 400 watts. I'm going to OC the 5970 to stock 5870 speeds and leave it all alone on 12V rail 1. I ditched my 2 raptors as I need the space for another radiator, so my system is quite "modest" now. 1 5970 1 5870 a nice OC on the CPU, a SSD, a HD, 2 I/o's, 2 pumps, and 6GB of Memory. I do also have 7 fans and a fc, but by my calculations it should be OK. Where the 5870 lives on 12V rail 2 thre is still alot of room. That card only draws 180 at full load. Link to comment Share on other sites More sharing options...
FEAR6655 Posted December 8, 2009 Share Posted December 8, 2009 Overclocking isn't going to push it near 400w. Link to comment Share on other sites More sharing options...
gutcheck Posted December 9, 2009 Author Share Posted December 9, 2009 Well if you overvolt it, yes it can my friend. Link to comment Share on other sites More sharing options...
gutcheck Posted December 10, 2009 Author Share Posted December 10, 2009 Can we get somone from Corsair to post an offical answer? I gotta tell you so far I've had no issues with my HX1000 and a 5970+5870 config. Link to comment Share on other sites More sharing options...
lee63 Posted December 17, 2009 Share Posted December 17, 2009 Can we get somone from Corsair to post an offical answer? I gotta tell you so far I've had no issues with my HX1000 and a 5970+5870 config.Did you get your 5970 to 5870 speeds....I'm thinking on doing the same config as you :D: Link to comment Share on other sites More sharing options...
An7h0ny Posted January 8, 2010 Share Posted January 8, 2010 Maybe I'll have to upgrade, but it seems fine for now....... lol but we'll see I guess, my Killowatt measured max 925w out of the wall with a vantage benchmark and most games it runs about 750-850....... With just the i7 920 running LinX shows max 460w on the killowatt With only Furmark it shows about 730-750 (4 gpus) I'm running a core i7 920 @ 1.33v @ 4.0ghz and (2) 5970's with no overvolt (all 4 gpu's running at 810/1000) Stable, and the PSU seems fine... Not that I'm recommending it, but I'm doing it now with no issues for ~2 weeks, extensive benchmarking, stability testing, gaming, etc and no problems yet. Although I still may upgrade... One of my 5970's is bad though 2d artifacting at first now in 3d with dx10 and 11, RMA... I can do some more testing and try to push the system to its limit when I get the otherone back (furmark + linpack) Link to comment Share on other sites More sharing options...
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