my mothee board says 1.2 volts and the new.ram says 1.8 so that might be whats u0
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Sounds like your motherboard takes triple-channel memory and you're trying to use dual-channel RAM sticks
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Do you have the model# of your motherboard?
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Is this a kit?

If your trying to add ram to a system that already has ram, make sure your timings and speed are the same on both kinds of ram
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i got the 6 ram to work I can't get to bios to set the timing This e machine gives little or no way of changing timings.
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Processor
• Socket LGA775 for Intel Core 2 Duo / Pentium D Processor
• FSB 1333/1066/800/533 MHz
• Support Hyper-Threading Technology
Chipset
• Single chipset: GeForce7050 / 610i (MCP73V)
Memory
• Single-channel DDR2 memory architecture
• 2 x 240-pin DDR DIMM socket support up to 8 GB
• Support DDR2 667/533/400 DDR2 SDRAM
Audio
• Realtek ALC888/1200 8-channel HD Audio codec
• Compliant with HD audio specification
Connectors
1 x PS/2 keyboard & PS/2 mouse connectors
1 x VGA port
1 x RJ45 LAN connector
4 x USB ports
1 x Audio port 8 CH 6 JACKS
Expansion Slots
• 1 x PCI Express x1 slot
• 1 x PCI Express x16 slot
• 2 x PCI slots
BIOS
• AMI BIOS with 8Mb SPI ROM
• Supports Plug and Play , ACPI& DMI
• Supports STR(S3)& STD(S4)
Onboard LAN
• Realtek RTL8101E Family PCI-E Fast Ethernet NIC
Video
• On Chip NVIDIA GeForce 7 Series Graphics Processing Unit (GPU)
• Share Memory: Maximum up to 256MB
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