I've got a Gigabyte MA780G-UD3H motherboard with a Phenom II X3 720 CPU (@3.2Ghz at 1.325v) and 4GB Kingston Hyper-X DDR2 8500 RAM and a Nexus Value 430W PSU.
This RAM is specced to run at 1066Mhz, 5-5-5-15 @ 2.2v. However, strange things happen if I run it at those settings. For one, my 2nd HD, a WD6400AAKS has bursts of activity every 3-4 seconds, even when I'm just sitting in the BIOS or at a DOS prompt. When running at 800Mhz, it just makes a slight tick every 15 seconds. Sometimes I'm unable to boot in XP as I hear the drives spin down and then up again, etc which obviously prevents the files being loaded. And when I do get into XP, if I load Speedfan, my PC completely locks up and the screen turns pale green, requiring a hard reset. I've been able to run the RAM at these settings before without these problems, so I don't know what's happened.
One thing I did have to do to get the RAM to run at 1066Mhz at all was to manually change to Trfc to 195ns, otherwise it would always boot as 800Mhz.
I'm only using the HD3200 IGP, but I get graphical corruption, mostly in IE when scrolling as shown in this picture http://img196.imageshack.us/img196/8273/corruptedie.gif but also in other random places where text will become smudged or I'll get breakthrough (part of one window's contents showing on another window even after the first one is minimised). This did perhaps happen more often when running the RAM at 1066Mhz, but I couldn't say for sure and it definitely still happens @800Mhz. I was using 512MB RAM for the IGP but I've currently dropped it to 128MB to see if that makes any difference. I've installed the latest Cat driver. I'm happy with all my temps and whilst this board doesn't have a GPU temp sensor as such, the Northbridge one is around 38-43c at the desktop when this problem occurs.
I thought it might be a RAM problem, but I've tested it with memtest v4 at 800Mhz, SPD, stock volts through to 1066Mhz, 5-5-5-15, 2.2v (+.4v) and apart from the fact that at the latter settings memtest showed CAS: 8-5-5-15, everything checked out fine. I obviously can't test the RAM that's allocated to the IGP, so the best I could do was drop that to 128MB and then memtest was able to test 3967MB.
Sorry if I've forgotten anything relevant. Hopefully someone can help me work out what's wrong so that I can get back to enjoying my PC, not fixing it
This RAM is specced to run at 1066Mhz, 5-5-5-15 @ 2.2v. However, strange things happen if I run it at those settings. For one, my 2nd HD, a WD6400AAKS has bursts of activity every 3-4 seconds, even when I'm just sitting in the BIOS or at a DOS prompt. When running at 800Mhz, it just makes a slight tick every 15 seconds. Sometimes I'm unable to boot in XP as I hear the drives spin down and then up again, etc which obviously prevents the files being loaded. And when I do get into XP, if I load Speedfan, my PC completely locks up and the screen turns pale green, requiring a hard reset. I've been able to run the RAM at these settings before without these problems, so I don't know what's happened.
One thing I did have to do to get the RAM to run at 1066Mhz at all was to manually change to Trfc to 195ns, otherwise it would always boot as 800Mhz.
I'm only using the HD3200 IGP, but I get graphical corruption, mostly in IE when scrolling as shown in this picture http://img196.imageshack.us/img196/8273/corruptedie.gif but also in other random places where text will become smudged or I'll get breakthrough (part of one window's contents showing on another window even after the first one is minimised). This did perhaps happen more often when running the RAM at 1066Mhz, but I couldn't say for sure and it definitely still happens @800Mhz. I was using 512MB RAM for the IGP but I've currently dropped it to 128MB to see if that makes any difference. I've installed the latest Cat driver. I'm happy with all my temps and whilst this board doesn't have a GPU temp sensor as such, the Northbridge one is around 38-43c at the desktop when this problem occurs.
I thought it might be a RAM problem, but I've tested it with memtest v4 at 800Mhz, SPD, stock volts through to 1066Mhz, 5-5-5-15, 2.2v (+.4v) and apart from the fact that at the latter settings memtest showed CAS: 8-5-5-15, everything checked out fine. I obviously can't test the RAM that's allocated to the IGP, so the best I could do was drop that to 128MB and then memtest was able to test 3967MB.
Sorry if I've forgotten anything relevant. Hopefully someone can help me work out what's wrong so that I can get back to enjoying my PC, not fixing it
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