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Amon · 7th November 2010

Hi everyone, I'm bringing this ol' thread back to life, as it seems rather pointless to start a new one with a similar topic.

I had some issues with a re-formatted PC (thanks to Pete Kaine for his input in the specific thread: saw your answer too late, sorry!): now I've sorted out the drop-outs, they were caused by the latest update of Flux's BitterSweet, but I still have quite high DPC latency and the results are puzzling me.

The PC is a PE55-UD3, i5 750, 4GB DDR3 Corsair XMS3, Radeon HD5450, RME FF400, LaCie FW TI card, Seagate and WD HDs. Dual Boot with XP SP3 x86 and Win7 Home Premium x64 (the 2 OS are independent and unaware of each other).

Now, in Win 7 I always get measurements within the 100-350 micro-seconds range, varying rapidly, with occasional 500-800 spikes, in XP the fluctuations are less severe and less prone to spikes, although the average is pretty close. I do not experience any drop-outs (once I load Cubase the system becomes more stable, measuring a 150 average with little fluctuations)...but considered that my old P4 2GB DDR build measures 8-30 with a 130 maximum and my CoreDuo laptop 2GB DDR2 is just 10 micro-seconds above that, I still think something is not 100% OK.

If anyone could shed some light, it would be greatly appreciated.

EDIT: Note that in Win7 I also removed every driver and app causing problems like the WD external drive manager, the built-in audio driver (which actually runs flawlessly together with ASIO and RME drivers), the ATI Catalyst Control Center and so on. I had to keep the ATI visualization driver as the Win VGA driver seemingly does not support 1920x1080 resolution

7th November 2010	#18
Amon Gear Head Joined: Mar 2010 Location: EU Posts: 64	Hi everyone, I'm bringing this ol' thread back to life, as it seems rather pointless to start a new one with a similar topic. I had some issues with a re-formatted PC (thanks to Pete Kaine for his input in the specific thread: saw your answer too late, sorry!): now I've sorted out the drop-outs, they were caused by the latest update of Flux's BitterSweet, but I still have quite high DPC latency and the results are puzzling me. The PC is a PE55-UD3, i5 750, 4GB DDR3 Corsair XMS3, Radeon HD5450, RME FF400, LaCie FW TI card, Seagate and WD HDs. Dual Boot with XP SP3 x86 and Win7 Home Premium x64 (the 2 OS are independent and unaware of each other). Now, in Win 7 I always get measurements within the 100-350 micro-seconds range, varying rapidly, with occasional 500-800 spikes, in XP the fluctuations are less severe and less prone to spikes, although the average is pretty close. I do not experience any drop-outs (once I load Cubase the system becomes more stable, measuring a 150 average with little fluctuations)...but considered that my old P4 2GB DDR build measures 8-30 with a 130 maximum and my CoreDuo laptop 2GB DDR2 is just 10 micro-seconds above that, I still think something is not 100% OK. If anyone could shed some light, it would be greatly appreciated. EDIT: Note that in Win7 I also removed every driver and app causing problems like the WD external drive manager, the built-in audio driver (which actually runs flawlessly together with ASIO and RME drivers), the ATI Catalyst Control Center and so on. I had to keep the ATI visualization driver as the Win VGA driver seemingly does not support 1920x1080 resolution