HELP: EP45-UD3P Dual Channel Problem!!!

[osme02]

hi, long time watcher, first time poster.

my ga-ep45-ud3p (bios f4->f7->f9 none work, cmos cleared) wont boot my g. skill pc6400 2x2gb (f2-6400cl5d-4gbpq) (passed memtest x24hrs in single channel) ram set in slot 1&3. The computer jsut starts running for ~5 sec and then restarts. It never even posts. if i place the ram is slots 2&4 the computer turns on but never restarts or posts.

if i put the ram in slot 1&2 (single channel) i can boot straight into windows. Also either chip will boot in slot one by itself.


i have tried to increase the ram voltage to 1.8->1.9->2.0->2.1v. I have increased the MCH core 1.1->1.2->1.3. I have also dropped the timings to 6-6-6-18, at 667

I recently tried someone elses PNY RAM with the same results

it must be the board, right? is there something in the bios im missing or was this board DOA?


e7400
ga-ep45-ud3p (1.0)
g. skill pc6400 2x2gb (f2-6400cl5d-4gbpq) (passed memtest x24hrs in single channel - ddr800)
9800gtx
ultra v-series 500w
vista




Bios Settings - See in post below

[BoombasticSloth]

Re: HELP: EP45-UD3P Dual Channel Problem!!!

Please post a template of your bios settings so people can help identify the problem.

[Lsdmeasap]

Re: HELP: EP45-UD3P Dual Channel Problem!!!

Yes, please post us your settings in full that you try. And also add a link to your exact ram model or post the exact model # and version so we can check spec voltages


This is Just a template I use to ask people their settings, pay no attention to the numbers in it, replace with yours

CPU = Model #
Motherboard = Model, Revision #
BIOS Version =
Ram = Brand, Model#, Part#, And or Link

[b][u]MB Intelligent Tweaker(M.I.T.)[/u][/b]
Robust Graphics Booster ...............: Auto or Fast
CPU Clock Ratio ..........................: 
Fine CPU Clock Ratio.....................:.0
CPU Frequency ...........................: 


[b][u]Clock Chip Control [/u][/b]
[b][u]Standard Clock Control[/u][/b]
CPU Host Clock Control..................: [Enabled] 
CPU Host Frequency (Mhz) ............: Mhz
[B]PCI Express Frequency (Mhz) .........:Set to 100[/B]

C.I.A.2 .................................:[Disabled]


[b][u]Advanced Clock Control [Press Enter][/u][/b]
CPU Clock Drive...........................: <<< 800
PCI Express Clock Drive.................: <<< 900
CPU Clock Skew (ps)....................: <<< 
MCH Clock Skew (ps)...................: <<< 


[b][u]DRAM Performance Control[/u][/b][u][/u]
[B]Performance Enhance...................: [STANDARD][/B]
Extreme Memory Profile (X.M.P.).....: Disabled
(G)MCH Frequency Latch...............: [Auto]
System Memory Multiplier ..............: 
Memory Frequency (Mhz) ..............: 
DRAM Timing Selectable ................: [Manual]

[b]Standard Timing Control[/b]
CAS Latency Time........................
tRCD .........................................
tRP'...........................................
tRAS..........................................

Set all Suggested below to highest Values first.  Then later you can lower, one at a time, testing as you go

[b][u]Advanced Timing Control[/u][/b]
tRRD...........................................
tWTR..........................................
tWR............................................
tRFC...........................................
tRTP...........................................
Command Rate (CMD) ....................:2

[u][b]Driving Strength Profiles[/b][/u][b][/b]
Driving Strength ............................

[b]Channel A[/b]
Static tRead Value.........................:6/7-10 333/B MCH - 8/9-12 400/D MCH
 tRD Phase0 Adjustment...................:Auto <<< Leave for all below as well
tRD Phase1 Adjustment...................:Auto
 tRD Phase2 Adjustment .................:Auto
 tRD Phase3 Adjustment..................:Auto
Trd2rd(Different Rank)....................:Auto 
Twr2wr(Different Rank)...................:Auto 
Twr2rd(Different Rank)...................:Auto 
Trd2wr(Same/Diff Rank)..................:Auto 
Dimm1 Clock Skew Control...............:Auto  ps
Dimm2 Clock Skew Control...............:Auto  ps

[b]Channel B[/b]
Static tRead Value.........................:6/7-10 333/B MCH - 8/9-12 400/D MCH
 tRD Phase0 Adjustment...................:Auto <<< Leave for all below as well
tRD Phase1 Adjustment...................:Auto
 tRD Phase2 Adjustment .................:Auto
 tRD Phase3 Adjustment..................:Auto
Trd2rd(Different Rank)....................:Auto 
Twr2wr(Different Rank)...................:Auto 
Twr2rd(Different Rank)...................:Auto 
Trd2wr(Same/Diff Rank)..................:Auto 
Dimm1 Clock Skew Control...............:Auto  ps
Dimm2 Clock Skew Control...............:Auto  ps

[b][U]Motherboard Voltage Control[/U][/b][U][/U]

[b]CPU[/b]
CPU Vcore….……….........................:Auto if not overclocking, if you are overclocking please do find and set your own voltages

CPU Termination…..... 1.200V*.......: << If overclocking Please set to stock, Auto overvolts this way to much.  Optimal range for overclock would be 1.2-1.5 depending on Vcore, try to keep at least .1 under vcore.  Auto is fine if not overclocking

CPU PLL…………………....1.500V*.......: << If overclocking Please set to stock, Auto overvolts this way to much.  Optimal range for overclock would be 1.5-1.65.  Auto is fine if not overclocking

CPU Referen.…………....0.755V*.......: <<< .64% Of Vtt (Termination above) Auto Will set this correctly 

CPU Reference2………,,0.800V*.......:<<< .67% Of Vtt (Termination above) Auto Will set this correctly 

[b]MCH/ICH[/b]
MCH Core…………….....1.100V...........: << 
MCH Reference….…….0.800V...........; <<< Leave
MCH/DRAM Ref.…......0.900V...........: <<< Leave
ICH I/O……………….....1.500V............: <<< Leave
ICH Core…………...……1.100V............: <<< Leave

[b]DRAM[/b]
DRAM Voltage ……....1.800V............: 
DRAM Termination .…0.900V............: <<< Leave
Channel A Reference 0.900V............: <<< Leave
Channel B Reference 0.900V............: <<< Leave

[b][U]Advanced Settings[/U][/b][U][/U]
Limit CPUID Max. to 3.....................: [Disabled]
No-Execute Memory Protect............: [Enabled]
CPU Enhanced Halt (C1E)................: [Disabled]
C2/C2E State Support....................: [Disabled]
x C4/C4E State Support..................: [Disabled]
CPU Thermal Monitor 2(TM2) ...........: [Enabled]
CPU EIST Function.........................: [Disabled]
Virtualization Technology................: [Disabled] Enabled if you use Vmware/Virtual PC

[b][U]Integrated Peripherals[/U][/b][U][/U]
Legacy USB Storage Detect ..............[Disabled] *Note* Must be enabled to flash from USB

[osme02]

Re: HELP: EP45-UD3P Dual Channel Problem!!!

Please see first post for computer parts.

[code]MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Auto or Fast
CPU Clock Ratio ..........................: 10
Fine CPU Clock Ratio.....................:.0.5
CPU Frequency ...........................: 2.8GHZ


Clock Chip Control
Standard Clock Control
CPU Host Clock Control..................: [Enabled]
CPU Host Frequency (Mhz) ............: 266Mhz
PCI Express Frequency (Mhz) .........: 100

C.I.A.2 .................................:[Disabled]


Advanced Clock Control [Press Enter]
CPU Clock Drive...........................: <<< 800
PCI Express Clock Drive.................: <<< 900
CPU Clock Skew (ps)....................: <<<
MCH Clock Skew (ps)...................: <<<


DRAM Performance Control
Performance Enhance...................: [STANDARD]
Extreme Memory Profile (X.M.P.).....: Disabled
(G)MCH Frequency Latch...............: [Auto]
System Memory Multiplier ..............: 3.0A
Memory Frequency (Mhz) ..............: 800
DRAM Timing Selectable ................: [Manual]

Standard Timing Control
CAS Latency Time........................ 5
tRCD ......................................... 5
tRP'........................................... 5
tRAS.......................................... 15

Set all Suggested below to highest Values first. Then later you can lower, one at a time, testing as you go

Advanced Timing Control
tRRD........................................... Auto
tWTR.......................................... Auto
tWR............................................Aut o
tRFC...........................................Aut o
tRTP...........................................Aut o
Command Rate (CMD) ....................:2

Driving Strength Profiles
Driving Strength ............................ Auto

Channel A
Static tRead Value.........................: 8
MCH
tRD Phase0 Adjustment...................:Auto <<< Leave for all below as well
tRD Phase1 Adjustment...................:Auto
tRD Phase2 Adjustment .................:Auto
tRD Phase3 Adjustment..................:Auto
Trd2rd(Different Rank)....................:Auto
Twr2wr(Different Rank)...................:Auto
Twr2rd(Different Rank)...................:Auto
Trd2wr(Same/Diff Rank)..................:Auto
Dimm1 Clock Skew Control...............:Auto ps
Dimm2 Clock Skew Control...............:Auto ps

Channel B
Static tRead Value.........................:8
MCH
tRD Phase0 Adjustment...................:Auto <<< Leave for all below as well
tRD Phase1 Adjustment...................:Auto
tRD Phase2 Adjustment .................:Auto
tRD Phase3 Adjustment..................:Auto
Trd2rd(Different Rank)....................:Auto
Twr2wr(Different Rank)...................:Auto
Twr2rd(Different Rank)...................:Auto
Trd2wr(Same/Diff Rank)..................:Auto
Dimm1 Clock Skew Control...............:Auto ps
Dimm2 Clock Skew Control...............:Auto ps

Motherboard Voltage Control

CPUMCH/ICHDRAMAdvanced Settings
Limit CPUID Max. to 3.....................: [Disabled]
No-Execute Memory Protect............: [Enabled]
CPU Enhanced Halt (C1E)................: [Disabled]
C2/C2E State Support....................: [Disabled]
x C4/C4E State Support..................: [Disabled]
CPU Thermal Monitor 2(TM2) ...........: [Enabled]
CPU EIST Function.........................: [Disabled]
Virtualization Technology................: [Disabled]

Integrated Peripherals
Legacy USB Storage Detect ..............[Enabled]

[Lsdmeasap]

Re: HELP: EP45-UD3P Dual Channel Problem!!!

Try these and see how you get along, you may need to overclock or at least use a lower CPU multi and higher FSB so you can use the 333 strap easier

So if you do not want to overclock your CPU freq, you may still want to use a higher FSB to make things easier. Try 8.5x333 and then use the 2.40B multi for your ram. CPU Voltage (Vcore and Vtt) may need adjusted to make this jump in FSB

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Auto or Fast
CPU Clock Ratio ..........................: 10
Fine CPU Clock Ratio.....................:.0.5
CPU Frequency ...........................: 2.8GHZ


Clock Chip Control
Standard Clock Control
CPU Host Clock Control..................: [Enabled]
CPU Host Frequency (Mhz) ............: 266Mhz
PCI Express Frequency (Mhz) .........: 100

C.I.A.2 .................................:[Disabled]


Advanced Clock Control [Press Enter]
CPU Clock Drive...........................: <<< 800
PCI Express Clock Drive.................: <<< 900
CPU Clock Skew (ps)....................: <<<
MCH Clock Skew (ps)...................: <<<


DRAM Performance Control
Performance Enhance...................: [STANDARD]
Extreme Memory Profile (X.M.P.).....: Disabled
(G)MCH Frequency Latch...............: [Auto]
System Memory Multiplier ..............: 3.0A
Memory Frequency (Mhz) ..............: 800
DRAM Timing Selectable ................: [Manual]

Standard Timing Control
CAS Latency Time........................ 5
tRCD ......................................... 5
tRP'........................................... 5
tRAS.......................................... 15

Set all Suggested below to highest Values first. Then later you can lower, one at a time, testing as you go

Advanced Timing Control
tRRD........................................... 3-4
tWTR.......................................... 3-6 (Set 8 for now)
tWR............................................4-6 (Set 10 for now)
tRFC...........................................52-62 (Set 58)
tRTP...........................................3-5
Command Rate (CMD) ....................:2

Driving Strength Profiles
Driving Strength ............................ Auto << Set 800 or 1066, the latter may be best

Channel A
Static tRead Value.........................: 8 << Set 9 for now
MCH
tRD Phase0 Adjustment...................:Auto <<< Leave for all below as well
tRD Phase1 Adjustment...................:Auto
tRD Phase2 Adjustment .................:Auto
tRD Phase3 Adjustment..................:Auto
Trd2rd(Different Rank)....................:Auto
Twr2wr(Different Rank)...................:Auto
Twr2rd(Different Rank)...................:Auto
Trd2wr(Same/Diff Rank)..................:Auto
Dimm1 Clock Skew Control...............:Auto ps
Dimm2 Clock Skew Control...............:Auto ps

Channel B
Static tRead Value.........................:8 << Set 9 for now
MCH
tRD Phase0 Adjustment...................:Auto <<< Leave for all below as well
tRD Phase1 Adjustment...................:Auto
tRD Phase2 Adjustment .................:Auto
tRD Phase3 Adjustment..................:Auto
Trd2rd(Different Rank)....................:Auto
Twr2wr(Different Rank)...................:Auto
Twr2rd(Different Rank)...................:Auto
Trd2wr(Same/Diff Rank)..................:Auto
Dimm1 Clock Skew Control...............:Auto ps
Dimm2 Clock Skew Control...............:Auto ps

Motherboard Voltage Control

CPU
CPU Vcore….……….........................: 1.3v

CPU Termination…..... 1.200V*.......: Auto << Set 1.225-1.25

CPU PLL…………………....1.500V*.......: Auto

CPU Referen.…………....0.755V*.......: Auto

CPU Reference2………,,0.800V*.......: Auto

MCH/ICH
MCH Core…………….....1.100V...........: 1.20-1.24
MCH Reference….…….0.800V...........; Auto
MCH/DRAM Ref.…......0.900V...........:Auto
ICH I/O……………….....1.500V............: 1.5
ICH Core…………...……1.100V............: 1.14

DRAM
DRAM Voltage ……....1.800V............: << Set 1.9-1.95
DRAM Termination .…0.900V............: Auto
Channel A Reference 0.900V............: Auto
Channel B Reference 0.900V............: Auto

Advanced Settings
Limit CPUID Max. to 3.....................: [Disabled]
No-Execute Memory Protect............: [Enabled]
CPU Enhanced Halt (C1E)................: [Disabled]
C2/C2E State Support....................: [Disabled]
x C4/C4E State Support..................: [Disabled]
CPU Thermal Monitor 2(TM2) ...........: [Enabled]
CPU EIST Function.........................: [Disabled]
Virtualization Technology................: [Disabled]

Integrated Peripherals
Legacy USB Storage Detect ..............[Enabled] <<< Disable for now

[osme02]

Re: HELP: EP45-UD3P Dual Channel Problem!!!

i tried your settings above and i have tried overclocking (Vcore at 1.325v) with:

7X400 2.0B
8x333 2.4B

Again single channel mode works fine (slot 1&2)
slots 1&3 reboot loop

[Lsdmeasap]

Re: HELP: EP45-UD3P Dual Channel Problem!!!

Ahh well it very well could be incompatibility issues, but I have not seen any with G.Skill.

I have however seen plenty of UD3x boards having dual channel issues, can you still RMA to the store you bought to get a replacement?

[osme02]

Re: HELP: EP45-UD3P Dual Channel Problem!!!

i actually bought it off someone on anandtech forums that said it was an open box time. He said he had his tech test it with "3 different brands" of 2gbx2 with no problems. I dont see how that is possible since I have tried two brands (g. skill and PNY) with my reboot loop issue!

[Lsdmeasap]

Re: HELP: EP45-UD3P Dual Channel Problem!!!

Ahh, that's not cool. He likely knew it was one of the boards with Dual channel issues and did not want to take the time to RMA it.

You may need to RMA it, let me know if you need the page to do so