I have a HP Pavilion a6700z; it was not a horrible machine at the time I bought it, and it was a great media PC. As it's still my primary home PC, I will
definitely be looking into building a dedicated mining rig. For now, though, I'm stuck with this. Here's what I'm running (in the aforementioned case):
Athlon Dual Core 4850e Brisbane @ ~2.5GHz on an Asus Narra3 mobo (which means I have 1 PCI-e x16 slot)
600 PSU
4 GB RAM
Windows 7 Home Premium 64-bit
and the 5830...it's an XFX
Total fans: 4 -- 1 on the processor, 1 exhaust, the PSU and the video card
No front intake fans -- no room for them in the case (the hard drive happens to be occupying that spot)
It doesn't bug me to run the fan all the time on the GPU. If it's bad for the fan, that's another matter entirely, though. Here is what I'm pulling down right now:
Catalyst 10.7 and SDK 2.1
poclbm-gui miner w/flags -v -w128
250-260 Mh/s even while running flash games and videos
Re-clocked using MSI Afterburner to 950/400 (any lower than 400 seemed to crash the computer...though I could definitely stand to bring that temp down some more...)
Fan at 75%
Current temperature is 82C (it is warmer in here...I have an AC...perhaps I should use it)
I would also point out that my old card ran at 78C for 2 years or more without incident with no overclocking at all...I used to run BOINC on it. Also, didn't like that temp, so pulling it down below 80 with the fans as we speak.
Thanks for the feedback, guys.
Edit: just knocked the memory clock down to 385...seems to be stable...will keep an eye on temps. My goal is below 80, for now, as I'm probably not savvy enough to carve holes in the tower. That would be an ideal situation, though.