New Graphics card slows down

Post by **UBT - Mikee** » Mon Mar 12, 2007 10:26 pm

Just got a new(ish) graphics card. All installed and drivers updated but something didn't seem right with BOINC. Ran benchmarks and they had dropped from 1800/3300 to 1800/1800 which I though was weird - didn't think a graphics card would cause that.

Anyway, after going through various bits and pieces I disabled the secondary graphics adaptor and after a restart the benchmarks are back up to what they were.

Just as well I don't use 2 monitors!

UBT - Halifax-lad · Post by **UBT - Halifax-lad** » Mon Mar 12, 2007 10:57 pm

Sounds about right, I assume some of the CPU power would have to be used in conjunction with the graphics card in order to support two monitors

DJH@GB-Ro · Post by **DJH@GB-Ro** » Mon Mar 12, 2007 11:22 pm

I have a dual monitor set up :?

Post by **UBT - Mikee** » Tue Mar 13, 2007 6:42 am

UBT - Halifax--lad wrote:Sounds about right, I assume some of the CPU power would have to be used in conjunction with the graphics card in order to support two monitors

I wouldn't have thought it would have made that large of a difference though. If anything I'd have expected the benchmark to get better as it's a newer card with more memory so would have taken less processing power from the main board rather than more.

Might be interesting to see if anyone else has a dual output card and one monitor and seeing if their benchmark (and output) changes as much if their secondary output is disabled. (Windoze XP home = Start >settings >control panel>admin tools>computer management>device manager>display adaptor>right click 'secondary'>properties - 'disable device'. Make sure that the monitor used is your primary device otherwise it could get a bit dark!) Anything you do is at your own risk - make sure you backup etc....etc...

DJH@GB-Ro · Post by **DJH@GB-Ro** » Tue Mar 13, 2007 7:43 am

I turned off my secondary monitor and my benchmarks dropped hugely!

Before:
Measured floating point speed 1257.82 million ops/sec
Measured integer speed 1518.87 million ops/sec

After
Measured floating point speed 1216 million ops/sec
Measured integer speed 1033 million ops/sec

I'm turning the secondary monitor right back on!

DJH@GB-Ro · Post by **DJH@GB-Ro** » Tue Mar 13, 2007 7:45 am

Both monitors on again, up to:

Measured floating point speed 1249 million ops/sec
Measured integer speed 1562 million ops/sec

Gary · Post by **Gary** » Tue Mar 13, 2007 7:49 am

If you're talking about the Measured floating point speed & integer speed, mine dropped too when I put in a new hard drive & optical drives last week, but soon returned to near what it was.

UBT - PiezPiedPy · Post by **UBT - PiezPiedPy** » Sat Mar 17, 2007 11:35 pm

The only time I get probs with extra cpu usage when running two monitors is when I play games that have a heavy gfx load such as Doom3 of BF2142

Boinc projects don't seem to be affected