I have just bought a second 5870 off of ebay for a tidy £130 and before hand did have a look around a few forums with people asking the same thing, however could not fathem a definite conclusion. I am running an ex58-ud5 board with an i7 920 at 3.8ghz at 1.31v 6gb ram 1tb hdd and 120gb SSD. The psu has a single 12v rail, with 52A on it. Also AMD state that to crossfire these gpus 600w+ is recommended. A few people said a minimum of 55A and i was wondering how precise this is and whether i could get by with my solid corsair unit? If not i could fork out for an 850w silverstone unit but not for a few weeks as i havnt the money so would my hx650 survive that length of time? Thanks in advance, Greg.
Is a Corsair HX650 enough for dual 5870's?
- Thread starter gregl342
- Start date
Well that means the PSU will be between 70-75% when gaming. I also plan to overclock the card to 950MHz core clock with afterburner (i have flashed my xfx card to an msi bios for unlocked voltage and plan to do so with my new one (powercolor)) so that will probably put it to around 80-85% usage. This really isnt good for a PSU. Your are supposed to have it around 60% so would this cause a PSU failure in the long term? Regards.
Okay but it will mean that it wont run as efficiently as the more power used makes the rails heat up and then the efficiency goes down when heat is involved. Ahh well im sure it will run fine. The PSU is around 1.5 years old so it isnt ancient by any means.
(PSU doesnt even feel hotter, hasnt increased fan speed or anything!)Ahh right, well i have changed it now 
And i think its will monster anything i have thrown at it, metro 2033 at full settings at 2560-1440 50+ FPS! Pretty darn goof. Maybe if i was running eyefinity or something it may start to drop at ultra settings.
And i think its will monster anything i have thrown at it, metro 2033 at full settings at 2560-1440 50+ FPS! Pretty darn goof. Maybe if i was running eyefinity or something it may start to drop at ultra settings.