Not enough power causing freezes/blue screens

[fullsy]

Hi

I am getting some weird issues with a new system. It seems to work fine with 3x2gb ddr1333 DIMMS populated however whenever I try and add a fourth DIMM so they are all populated it either freezes on loading or blue screens. I've got a I7-870, GTX 480 and a TX650W. Someone suggested this power supply is not able to handle all of what I'm running and becomes immediately apparent when I add a fourth DIMM.

Does anyone else want to either confirm if this could be true or any other suggestions?

Cheers

[trackrat]

What memory kit part number are you using? Filling in your PC specs would help us help you.

 

The i7-870 is a DUAL channel CPU. You should run 1, 2 or 4 DIMMs but not 3 DIMMs. DDR3 DIMMs only draw about 5 watts so I doubt this is overloading the PSU unless it's at the ragged edge to start, which I doubt. You can use the PSU calculator at the link below to get a better idea of what your system requires for a PSU.

 

I'd start by test one DIMM at a time with Memtest 86+ to check for errors. Once we know the memory part number and if you are using ONE RAM kit or mixed RAM we might be able to add more info.?

 

http://www.extreme.outervision.com/psucalculatorlite.jsp

[PricklyPete]

I highly doubt that your problem is related to the amount of power that the 4th dimm requires. I would say that it's more likely that you either have the wrong settings in your bios to support 4 dimms (ie. Vdimm, timings,etc) or the 4th dimm is a dud. I'd start by using memtest to check the 4th stick by itself, then check the others individually, and I'd also google for the recommended bios setting for the ram/mobo combination.

[fullsy]

I tested each individual DIMM for 10 passes with no errors. I also tried another DIMM and I still got same issues. It is not on supported memory list although I doubt this is issue as it works fine with 2 or 3 DIMMS. I've looked at voltage settings in bios and don't know what to change. It's all at auto currently.

I've got IMC voltage, DRAM Voltage, CPU voltage, OFFSET voltage, CPU PLL VOLTAGE and PCH Voltage.

Any suggestions?

EDIT: It is all part of one kit (4X2GB) mush kin ESSENTIALS 991586 9-9-9-24 1.5V

[Yellowbeard]

You need to set your memory controller voltage (IMC) to the 1.2v to 1.275v range to accomodate the load of 4 modules.

[fullsy]

Alright, I'll try that

Cheers

[fullsy]

Tried that, no success, froze. I tried 1.20v and 1.25v. it won't let me do 1.275v only 1.30v which may be too much?

Any other suggestions? Faulty board?

[fullsy]

I've found where problem lies I think. Whenever I try and use either one DIMM in a channel B slot or two DIMMS in channel B slots memOK red LED stays lit continously and nothing else occurs so it's probably a motherboard issue with this channel although it's weird how it works with 2 DIMMS in channel A and 1 DIMM in one channel B slot. Anyone know of any fixes or send it back?

Cheers

[RAM GUY]

I've found where problem lies I think. Whenever I try and use either one DIMM in a channel B slot or two DIMMS in channel B slots memOK red LED stays lit continously and nothing else occurs so it's probably a motherboard issue with this channel although it's weird how it works with 2 DIMMS in channel A and 1 DIMM in one channel B slot. Anyone know of any fixes or send it back?

Cheers

 

With that type of error its got to be the memory, the board or the CPU. Test the memory modules one at a time to see if you can isolate the faulty memory module. If they both work individually then I would test one of the modules in each DIMM slot, one at a time to see if you can isolate a failing slot. If an entire memory channel seems to be causing the problem (only having problems with memory installed in channel A or B) then the problem may be with the memory controller on the CPU.

[fullsy]

Cheers for your reply.

There are no errors with any DIMMS. They all work perfectly either on their own or as a set of two in Channel A. System also works fine if I use 3 DIMMS with two channel A slots populated and either one from channel B. With 4 DIMMS I don't get a MEMOK! light continously lit but it freezes or blue screens. With 1 DIMM or 2 DIMMS in channel B light is lit and nothing else boots.

It would indicate all of channel B failing. However surely if it was failing completely it would not work of one DIMM in channel B accompanied by one in channel A or two in channel A?

Cheers