Hi there,
I recently acquired 4 brand new 5830s for $320 so I put them into a spare setup I had. Upon installing Win7, AMD CCC, .NET4, MSI Afterburner, and poclmbm I started all 4 miners. According to the bitcoin wiki the 5830s were getting between 280-320 MH/s, but I'm only hitting 170 on stock settings and 190 with 900/500 overclocks. Am I missing something blatantly obvious or is something wrong. I'm attaching some pics of the setup. If there's any information you need I'd be happy to provide it.
Thanks.
P.S. While I was writing this, three out the 4 miners dropped to 300-400 khash/s, restarting them made them work at 190mh/s again. Any reason for that?
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2Frup8wfB.jpg&t=663&c=i55x1zL0Y_vSbg)
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2FwDBQBf1.jpg&t=663&c=qylxXcO3ecJ1lA)
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2FinzRvYf.jpg&t=663&c=PcZxHNVPHJPayw)