You guys having so much fun. Im still GPU’less 
Tried to snag a bargain low offer on a GTX480 yesterday but the guy didn’t fall for it
Ho hum I’ll keep searching. I’ll be able to help you guys soon even if I give up on s/h and buy a new one! Hopefully once GTX670/680/690 availability improves and maybe AMD get a price drop other Nvidia cards may drop also.
Butuz
Tossed the 301.24 beta on the gaming rig last night and allowed SETI GPU work units. I’ve got about 20 through validation and no errors. This is on the new 560Ti card I threw in the rig last month 
63 good and pending, 44 validated… all in less than 24 hours. No errors. Looking good for the new drivers.
new drivers on home machine, looks good.
Will update the 24/7 cruncher as I’m in that office tomorrow
beta drivers appear to have done the job - excellent stuff and the 3x460GTX rig is pumping out credit
:tiphat:
Butuz
Been messing about with lowering voltages with the idea of lowering temperatures and power consumption which seemed to result in a strange down-clocking problem with my GFX cards. :eek:
I have been using MSI Afterburner to OC, and also have GPU-Z and was using both to monitor clocks and temperatures. I found if you use both utilities together the cards would downclock after a short while.
Had me puzzled for a while…
Currently running my GTX460 @0.93 volts and temp has dropped about 5 Deg… and that’s with it running at 815MHz, not at the stock clock of 720Mhz…
Good work. As I found out when experimenting with overclocking the X6 1000T upping the voltage just a bit can use loads more electricity and lowering the voltage a bit can use loads less! I’ve varied my 1100T between 80watts at full load and 280 watts at full load depending on under/over volt and under/over clock. Currently run at stock volts and 0.5ghz overclock and pull 160 watts out of the wall.
Same be true for GFX cards!
For crunchers sometimes the extra few MHz by overclocking and overvolting the crap out of it simply is not worth almost doubling the power usage. Better off either sticking at stock volts and seeing how high you can clock, or sticking at stock clock and seeing how low you can volt.
Also worth looking at the PSU - if your building a cruncher for CPU and multiple GPU duties the extra cost of a 92% efficient PSU may actually end up paying for itself in electricity in a year and then saving you a good few beers a year in years 2-5.
Butuz
My main rig has an OCZ StealthXStream2 600W, rated as 80 plus but is able to achieve 87% and has had rave reviews… Might upgrade to a bigger OCZ if I go for Dual 460’s.
Have tried lowering the volts on my 1055t (125W) but at 3.5GHz it seems happiest running at 1.42V whereas my 1090T needs 1.52V to run stable at 3.975GHz… and my 955BE happily sits at 4.01GHz on stock volts, but had it running at 3.8 under-volted.
Not had any more down-clocking issues today, luckily, so it looks as though my diagnosis about GPU-Z and afterburner was correct…
Just been running some tests with my gtX550Ti and the result of down-volting from 1.125V to 1.075 volts cuts down power consumption by about 10W whilst crunching a GPUGRID WU, and drops the temperature by about 5 degC.
Also did a test on my 1090Tand have found that by dropping it down to 3.75GHz from 3.975Ghz and the volts down to 1.45V from 1.525V cut power consumption down by about 60W… dropping down to 3.5GHz and 1.425 was about the same.
Think I’ll run my 1090T at 3.75Ghz now… seems a good compomise
Wow 1.525 is some serious voltage!!! That must have been pulling 200+ from the wall?
I ran mine for a bit at 4.4ghz at 1.525 and it burned the voltage regulators on the motherboard and a big chunk of PCB totally the wrong colour. Mental note cheap gigabyte motherboard does not like huge overclocks (though, it was stable, despite the smoke).
Butuz
It needed 1.525 for it to run stable approaching the 4Ghz mark… Having dropped it down to 3.75Ghz it seems quite happy to run at 1.425V.
On full load it was pulling 1.72 amp with Docking and GPUGRID crunching with it running at 1.525 volts. Roughly works out at as a load of 420W. After my tweaks the load has dropped by about 80W.
Also, another good thing is the Core temp has dropped a good 7 degrees on the 1090T by backing off on the performance.
My 1090T is running on a Gigabyte MA78LMT-US2H (a cheapo) which has been modified it by putting some heatsinks on the VRM’s.
Have run a comparison test on my 955BE powered HTPC which uses an identical motherboard and is clocked to 4Ghz and the loads are about the same.
I think I got a good 1100T as she runs at 3.8 at stock volts quite happily.
Am running the GA-880-GM and boy the lack of heatsinks on the VRMs really do hinder it.
I think I will fit heatsinks that’s a really good idea!
Butuz
todays little update should see yet another boinc combined increase from me 
That should keep me consistently over the 1/4 million a day now
Won’t be long before we hit the top 100!!!
On Sunday I’m going to do some power checks and see if I can run my GTX460 and GTX550Ti together in my main rig using my 600W OCZ PSU. I think it will have headroom, especially if I am running them undervolted.
Main cruncher now running GTX460 and GTX550Ti!
Have measured the total load on PSU and it’s well within it’s capabilities, also found the GTX460 uses about the same power as the GTX550Ti.
We have now reached #110 and we’re still rising!!! 
boinc combined lists yesterday as my highest ever output 
Nice trophy DT!! 