CPU/Mobo System becomes slow on high speed transfer

[cool11]

Hello,

I am facing some issue with my system. My system configuration:
Core 2 duo 2.2Ghz, 3GB Ram, 1Gb graphics card, 2 lan cards, SATA DVD writer/drive.

Facing these issues:
1) My system works pretty well, when transferring files in internal drives i get around 40-45MB speed with CPU usage being normal. When ever i download something using dc++, if speed goes above 1MB+ my CPU usage goes above 75% and if the speed goes to 2MB it nearly goes 100% which affects system response. I tried everything ... not sure where the issue is. Drive DMA is enabled. I think it should not happen in C2D.

2) I have 1 IDE and 1 SATA HDD, due to driver issue during windows installation I have set 'configure sata as' in bios to IDE instead of AHCI. Now when i try to revert back to AHCI the system restarts at windows startup. For this do i need a windows cd with sata drivers?
PS: I have a SATA DVD writer/drive

3) When i set 'configure sata as' in bios to AHCI, the system startup takes some time. Even though the DVD drive order in boot is not first, the system gets stuck to read the cd drive even though there is no CD/DVD in the drive. This only happens when it is set to AHCI.

Please help me with these issues.

Thanks

 

[madnav]

keep temporary folder location drive and download location drive same in dc++ settings to avoid data being moved from partition to partition.

the 2nd reason for dc++ eating up resources is the segmented downloading.

turn it off... or switch to original plain dc++ client which lacks segmented downloading.

lastly, dc++ segmented downloading leads to a lot of file fragmentation, defragment your drives.

 

[cool11]

Actually i have tried all the clients....
traditional dc++ also slows down on my system when speed goes above 1.5MB.
Not sure what happens. Though my friend says his system (same c2d) performance doesn't go that high.

Is this normal with dc++??

 

[anfjavid]

May i know the O/s you are using. In order to use AHCI under windows xp, then 1st you have to set SATA mode to IDE or legacy and then boot to xp. Then you have to install the AHCI drivers. Restart > enter BIOS and change sata mode to AHCI. Now you can boot to xp successfully in AHCI mode. Because XP doesnt support AHCI mode natively, you have to do the above.

For vista/7 this is not necessary as it natively supports AHCI.