Gigabyte GA-EP45-UD3P and F2-6400, Can't Use More Than 1 Stick

[bigbn]

Model of the motherboard: Gigabyte GA-EP45-UD3P

Model of the memory: GSkill F2-6400CL5S-2GBPQ DDR2 2GB PC2-6400

Model of the CPU: Intel Core 2 Duo @ 3.0GHz

Issue: Computer doesn't have any issues when I only use 1 stick of the RAM. When I install 2 or more the PC freezes after about 5 minutes or doesn't boot at all. Looking for some ideas on what the issue could possibly be.

[Tradesman]

Do you have the sticks in slots 1-3? Have you manually set the timings (should) or are they set to auto? Is CR (Command Rate at 2T (or 2N), it may default to 1T (or 1N)? Check that DRAM voltage is set correctly.

[bigbn]

When I was trying two, I was putting it in 1 and 3, yes.

Timing is set to Auto right now

CR is also set at Auto

DRAM voltage is set to Auto, but is running at 1.8v

[Tradesman]

Try setting the the timings manually and put the DRAM Voltage to 1.9

[bigbn]

What should I set the timing to?

[Tradesman]

Base timings to 5-5-5-15, DRAM Voltage 1.9, Command Rate to 2T, speed 800

[bigbn]

Thanks that worked to the point where I can now use 2 of the sticks, but if I try 3 or 4 to fill up the entire board, it still dies. Any ideas?

Thanks for the help so far!

[GSKILL TECH]

Do you have the latest BIOS? Any two sticks work fine, but when you install 3 or 4 it is not?

Thank you
GSKILL TECH

[bigbn]

I just upgraded the latest stable BIOS and having the issue.

Correct, any two sticks work with no issues, but if I try to go any more than that I never actually get to the OS.

[Tradesman]

Could you post your BIOS Settings - may have to raise the tRFC to 82 or so and also the NB voltage

[bigbn]

Here's everything in the MB Intelligent Tweaker Menu in the BIOS:

Robust Graphics Booster: Auto
CPU Clock Ratio: 9X
CPU Freq: 3.00GHz

*****Clock Chip Control*****
CPU Host Clock Control: Disabled
CPU Host Req: 333
PCI Express Freq: Auto
C.I.A.2: Disabled

Advanced Clock Control
CPU Clock Drive: 700mV
PCI Express Clock Drive: 700mV
CPU Clock Skew: 0ps
MCH Clock Skew: 0ps

*****DRAM Performance Control*****
Performance Enhance: Turbo
(G)MCH Frequency Latch: Auto
System Memory Multiplier (SPD): Auto
Memory Frequency: 667
DRAM Timing Selectable (SPD): Manual
CAS Latency Time: 5
tRCD: 5
tRP: 5
tRAS: 15

Advanced Timing Control
tRRD: Auto (3)
tWRT: Auto (3)
tWR: Auto (5)
tRFC: Auto (38)
tRTP: Auto (3)
Command Rate (CMD): 2

Channel A Timing Settings: All Set to Auto
Channel A Driving Settings: All Set to Auto

Channel B Timing Settings: All Set to Auto
Channel B Timing Settings: All Set to Auto


*****Motherboard Voltage Control*****
Load-Line Calibration: Disabled
CPU Vcore: Auto
CPU Termination: Auto
CPU PLL: Auto
CPU Reference: Auto

MCH Core: Auto
MCH Reference: Auto
MCH/DRAM Reference: Auto
ICH I/O: Auto
ICH Core: Auto

DRAM Voltage: 1.900V
DRAM Termination: Auto
Channel A Reference: Auto
Channel B Reference: Auto

[Tradesman]

Your memory frequency shows as 667 which equates to 1333 - should be at 400 to = 800

[GSKILL TECH]

The modules may not be compatible. This is common when you purchase single modules to pair in dual channel. You will need to send those in so we can test 4 modules that can work together and send those to you.

http://www.gskill.com/rma.php
Make sure to ask the RMA department to test the 4 modules before shipping.

Thank you
GSKILL TECH