8GB DDR3 1866MHz RipjawsX

[angryotter]

Hi,

Why does my bios only see this as 1333MHz? I bought a matched pair of 8GB units and no matter which of the four slots on the motherboard they go into, the bios reports that they are running @ 1333MHz.

The system originally came with 2x2GB Hynix PC12800 DIMMs which the bios correctly recognised @ 1600MHz.

Dell Vostro 470
Intel i7-3770 @ 3.4GHz
Dell Motherboard model 0YJPT1 A00
Chipset Intel Ivy Bridge Rev 09
Southbridge Intel H77 Rev 04
LPCIO ITE IT8772
Bios: Dell A06 Date 5/25/2012

I've checked, and Dell has no bios updates for this model yet.

Appreciate any advice

[Tradesman]

If it supports 1866 you should be able to go into BIOS, enable XMP and select the 1866 profile....by default most all mobos default to setting DRAM at 1333 or 1600