Getting ddr3 pc-15000 1866Mhz RAM working on inspiron 580 mobo 033FF6 (CPU 1)

Hi, I know that ram can usually be installed with a higher clock speed than what is officially "supported", but that it will downcycle the speed to it's highest supported (ie: 1333mhz) clock cycle. That is providing it's other specs are a match (Ie 240 pin, ddr3, fits to slot on mobo etc...) I have a dell inspiron 580 with motherboard 033FF6 (CPU 1). Officially it only supports 8gb, but works for some up to 16gb using 4x4 configuration. I have a pair of patriot dd3 PC15000 1866MHz ram sticks. WHen installed with the 2 spare slots, the tower refuses to boot, the fan spins and it beeps 4 times. Beep code for 4 is ram issue if I understood. Removing both new sticks allows the PC to boot up normally, removing only 1 of the new 1866mhz ram sticks actually allows the pc to start booting with the startup loading screen and dell logo. At which point it freezes about 1/3rd of the way through it's progress with no error message. I'm wondering why it's having an issue like this instead of just altering the clock speed lower. And why does pulling 1 stick and leaving 1 in allow the pc to start booting at all instead of the beep codes error? Any ideas?
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More about ddr3 15000 1866mhz ram working inspiron 580 mobo 033ff6 cpu
  1. what is the capacity of each of those patriot sticks?
  2. They are 2x 4gb ddr3 1866mhz. The chipset is intel h57 with an i3 dual core. I've tested other memory sticks above 8gb without issue. As far as I know, despite the fact that it is above the supposed "supported speed" listed by dell, it should technically just run at the max rate the mobo/cpu supports no? Product was listed as: " Patriot Memory Viper 3 Series 8GB DDR3 1866MHz Desktop Memory"
  3. did you try getting into the bios and seeing if the ram is being detected correctly?
  4. Believe your DRAM is made with high density memory chips which are supported by the mobo chipset, the h57/1156 was designed for the low density memory ICs
  5. Tradesman1 said:
    Believe your DRAM is made with high density memory chips which are supported by the mobo chipset, the h57/1156 was designed for the low density memory ICs


    Sorry could you clarify? Unless I am misreading, your saying it IS supported by the mobo chipset? or was that supposed to be ISN"T?

    As far as BIOS detection, the problem is anytime time there is at least 2 of the Patriot Viper sticks in the pc, it freezes at the dell logo startup screen IE: pre bios. I actually CAN get into the bios with the new ram ONLY if there is a single stick plugged in. At that point, the computer will boot and even allow me enough time to get into the bios and see the ram being recognized but running at 1333mhz, but best case scenario, the "boot" lasts 20 seconds or less before the pc without warning automatically restarts/reboots. If I were to leave it alone without input, it will continually attempt to boot and then restart without warning. A boot loop.
  6. Supposed to be 'aren't' sorry
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1866mhz Patriot DDR3 RAM 033FF6 (CPU 1) Memory Dell Inspiron pc-15000