Originally Posted by REDHAMMER999
This sounds like an interesting idea. In which case my power supply is not enough. as it only does 50Amps. so if 25.5 is taken by gfx card. then thats over half just by the gfx card, even if it is the most power hungry...
If his system is drawing 600W from the wall, then that's roughly 510W being pulled from the PSU.
Anyway, you didn't answer my question before about which card you're talking about
: your title says "6990", but both your post and the review you posted
refer to the 6970. So, which card are you talking about?
If you are talking about the 6970, then you almost have enough power to have two
6970s in your system. If you're talking about the 6990, then you still have plenty, but there's no way you'd be able to get two 6990s in your system. hehe
Guru3D was able to pull 526W from the wall with their test system while their 6990 was unlocked (source
). This means that the system pulled approximately 447W from the power supply. So if I add about 150W to account for the rest of the system (especially the CPU), then that results in approximately 600W of power being pulled from the PSU at the most
if the 6990 is unlocked.
However, your PSU has a +12V capacity of 600W (50A) just like you said. So I think that if you decide to unlock this card, then I recommend easing into overclocking it. I mean, you can still overclock with the 6990 unlocked, but be cautious; increase the clocks slowly. If you experience any of the symptoms below after both unlocking and overclocking (if you don't unlock the 6990, then there's nothing to worry about), then you will need to either back off on the overclock a bit, or "lock" the card back up (so to speak):
- bad 3D performance
- crashing games
- spontaneous reset or imminent shutdown of the PC
- freezing during gameplay
If you do not unlock the 6990, then there's nothing to worry about whatsoever. If you're talking about the 6970, then again: you almost have enough power two have two 6970s in your system (but not quite).
Edited by TwoCables - 6/23/11 at 11:57am