EXCellR8
Posts: 1,797 +1
I built a new computer for a friend of mine and for some reason it's being really difficult. I used a MSI 790FX-GD70 socket AM3 motherboard and a six core AMD processor, the 1090t. I also installed 8GB of Corsair XMS3 DDR3 dual channel memory which is supposed to run at 1600mhz (8-8-8-24). my problem is that the board defaults the RAM at 1333mhz and slightly looser timings. This normally wouldn't be an issue but since I want him to be able to run the memory modules at full speed I am trying to adjust the BIOS accordingly; failing miserably. This board is designed for moderate OC, and supports the RAM, but for some reason it becomes unstable when tweaking. I suppose this could have something to do with an outdated BIOS and being coupled with an X6 processor, but the changes I'm trying to make really aren't that extravagant.
Firstly, I tried to set a ratio of [1:4] which would have the memory run @ 1600mhz, but the board didn't seem to like that too much and would not POST afterward. I read that the 1:4 ratio is problematic with some hardware combinations so I abandoned that right away. Next I tried raising the HTT/FSB to 250 in 10mhz increments, and adjusting the volts accordingly. This worked fine until I lowered the multiplier from [16] (200x16) to [13] (250x13) and setting the NB multi to [8]. This gave the CPU just a slight OC from stock speed and kept the NB where it was supposed to be. However, even though the memory was now @ 1666mhz and the timings were set manually, the computer became unresponsive and behaved erratically upon restart. So now I have no idea what to do with this other than try a higher multiplier with a lower FSB. I'm thinking it could be a voltage issue but I'll admit I really have no idea what some of these voltage settings are for. I may just need to update the BIOS but honestly it's not worth the trouble at this point.
I should point out that the computer works and runs just fine with default settings loaded, and with the RAM running @ 1333mhz. Worst case scenario is he'll just need to run them under spec but I'd like to see them working as they are intended. Probably should have just bought a 1333mhz kit...
Any suggestions? Help is appreciated.. sorry for the long post
Firstly, I tried to set a ratio of [1:4] which would have the memory run @ 1600mhz, but the board didn't seem to like that too much and would not POST afterward. I read that the 1:4 ratio is problematic with some hardware combinations so I abandoned that right away. Next I tried raising the HTT/FSB to 250 in 10mhz increments, and adjusting the volts accordingly. This worked fine until I lowered the multiplier from [16] (200x16) to [13] (250x13) and setting the NB multi to [8]. This gave the CPU just a slight OC from stock speed and kept the NB where it was supposed to be. However, even though the memory was now @ 1666mhz and the timings were set manually, the computer became unresponsive and behaved erratically upon restart. So now I have no idea what to do with this other than try a higher multiplier with a lower FSB. I'm thinking it could be a voltage issue but I'll admit I really have no idea what some of these voltage settings are for. I may just need to update the BIOS but honestly it's not worth the trouble at this point.
I should point out that the computer works and runs just fine with default settings loaded, and with the RAM running @ 1333mhz. Worst case scenario is he'll just need to run them under spec but I'd like to see them working as they are intended. Probably should have just bought a 1333mhz kit...
Any suggestions? Help is appreciated.. sorry for the long post