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Hi there... first time poster and first time overclocker 
here. I've scoured/lurked these boards for answers and read as much as I could including a couple O/C guides. Thanks in advance if anyone can point me in a direction.
My problem is that the RAM will not run at 1066 speed. Nothing I do can get these dimms to run above 400mhz/800hz. I ran memtest86 2.11 for 6 hours with no errors at the bios settings below so I think the dimms are good, however memtest sees them as "399 MHz (DDR799) / CAS 5-6-6-18 / Dual Channel; 4095M 4381 MB/s", but all that is probably from my Bios settings right? If I set these at 1066 in the bios, the thing won't post. The default bios says "Memory Frequency (Mhz) ....800..........: 800" so it's definitely not seeing these as 1066. In WinXP 64, MemSet's (& cpuz) SPD shows the voltage at 1.8 but PC Health shows it slightly above 2.0. They're in slots 1 and 3. Should I try slots 2 and 4 or switching which dimm is A? I have tried several things per the many posts on this board. I see many people having problems with PC2-8500 2x2 in P43/P45 boards though, and I'm wondering if it's possible. Per Lsdmeasap, 2x2 pc2-8500 "always" requires manual DRAM settings in an EP43. This gives me hope. I'm hoping someone here can either tell me to give up and run the memory at 800 or point me to a site that explains how the Skews work for manually setting the timing for this DIMM/MB combination.E7400 (stock cooler)
GA-EP43-DS3L 775 ATX Motherboard
Gold Edition 4GB PC-8500 DDR2 Memory Kit (Two 2GB DDR2-1066 Memory Modules)
Verto GeForce 9600 GT 512MB PCIe 2.0 Graphics Card
Phantom Mid Tower ATX Case with 500W Power Supply
Current Settings running stable (8 hours prime95 at 3.5 GHz 56 deg C):
MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Turbo
CPU Clock Ratio ..........................: 10x
Fine CPU Clock Ratio.....................:.+0.5
CPU Frequency ...........................: 3.0GHz(333x10.5)
Clock Chip Control
Standard Clock Control
CPU Host Clock Control..................: [Enabled]
CPU Host Frequency (Mhz) ............: 333 Mhz
PCI Express Frequency (Mhz) .........:Set to 100
C.I.A.2 .................................:[Disabled]
Advanced Clock Control [Press Enter]
CPU Clock Drive...........................: 800mV
PCI Express Clock Drive.................: 900mV
CPU Clock Skew (ps)....................: 0ps
MCH Clock Skew (ps)...................: 0ps
DRAM Performance Control
Performance Enhance...................: [STANDARD]
(G)MCH Frequency Latch...............: 333MHz
System Memory Multiplier ..............: 2.40B
Memory Frequency (Mhz) ....800..........: 800
DRAM Timing Selectable ................: [Manual]
Standard Timing Control
CAS Latency Time........................5
tRCD .........................................6
tRP'...........................................6
tRAS..........................................18
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........Au to
tWTR...................................3.......Aut o
tWR....................................6........Au to
tRFC..................................56.........5 8
tRTP..................................3.........Au to
Command Rate (CMD) ..............0......:Auto
Driving Strength Profiles
Driving Strength ............................1066MHz (A&B)
Channel A
Static tRead Value................7.........:9
tRD Phase0 Adjustment...................:Auto
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...............7..........:9
tRD Phase0 Adjustment...................:Auto
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
Voltage Type.………... Manual
CPU
CPU Vcore….……….....1.26250V....................:1.3500 0V (1.332 in PC Health, 1.296 in cpuz)
CPU Termination…..... 1.200V*.......: 1.300V
CPU PLL……....……....1.550V*.......: 1.550V
CPU Reference………....0.805V*.......: Auto
MCH/ICH
MCH Core…………….....1.100V...........: 1.400V (had this increased trying to increase fsb, could probably be reduced)
ICH I/O……………….....1.550V............: 1.550V
DRAM
DRAM Voltage ……....1.800V............: 2.100V
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]
Integrated Peripherals
Legacy USB Storage Detect ..............[Enabled]
here. I've scoured/lurked these boards for answers and read as much as I could including a couple O/C guides. Thanks in advance if anyone can point me in a direction.My problem is that the RAM will not run at 1066 speed. Nothing I do can get these dimms to run above 400mhz/800hz. I ran memtest86 2.11 for 6 hours with no errors at the bios settings below so I think the dimms are good, however memtest sees them as "399 MHz (DDR799) / CAS 5-6-6-18 / Dual Channel; 4095M 4381 MB/s", but all that is probably from my Bios settings right? If I set these at 1066 in the bios, the thing won't post. The default bios says "Memory Frequency (Mhz) ....800..........: 800" so it's definitely not seeing these as 1066. In WinXP 64, MemSet's (& cpuz) SPD shows the voltage at 1.8 but PC Health shows it slightly above 2.0. They're in slots 1 and 3. Should I try slots 2 and 4 or switching which dimm is A? I have tried several things per the many posts on this board. I see many people having problems with PC2-8500 2x2 in P43/P45 boards though, and I'm wondering if it's possible. Per Lsdmeasap, 2x2 pc2-8500 "always" requires manual DRAM settings in an EP43. This gives me hope. I'm hoping someone here can either tell me to give up and run the memory at 800 or point me to a site that explains how the Skews work for manually setting the timing for this DIMM/MB combination.E7400 (stock cooler)
GA-EP43-DS3L 775 ATX Motherboard
Gold Edition 4GB PC-8500 DDR2 Memory Kit (Two 2GB DDR2-1066 Memory Modules)
Verto GeForce 9600 GT 512MB PCIe 2.0 Graphics Card
Phantom Mid Tower ATX Case with 500W Power Supply
Current Settings running stable (8 hours prime95 at 3.5 GHz 56 deg C):
MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Turbo
CPU Clock Ratio ..........................: 10x
Fine CPU Clock Ratio.....................:.+0.5
CPU Frequency ...........................: 3.0GHz(333x10.5)
Clock Chip Control
Standard Clock Control
CPU Host Clock Control..................: [Enabled]
CPU Host Frequency (Mhz) ............: 333 Mhz
PCI Express Frequency (Mhz) .........:Set to 100
C.I.A.2 .................................:[Disabled]
Advanced Clock Control [Press Enter]
CPU Clock Drive...........................: 800mV
PCI Express Clock Drive.................: 900mV
CPU Clock Skew (ps)....................: 0ps
MCH Clock Skew (ps)...................: 0ps
DRAM Performance Control
Performance Enhance...................: [STANDARD]
(G)MCH Frequency Latch...............: 333MHz
System Memory Multiplier ..............: 2.40B
Memory Frequency (Mhz) ....800..........: 800
DRAM Timing Selectable ................: [Manual]
Standard Timing Control
CAS Latency Time........................5
tRCD .........................................6
tRP'...........................................6
tRAS..........................................18
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........Au to
tWTR...................................3.......Aut o
tWR....................................6........Au to
tRFC..................................56.........5 8
tRTP..................................3.........Au to
Command Rate (CMD) ..............0......:Auto
Driving Strength Profiles
Driving Strength ............................1066MHz (A&B)
Channel A
Static tRead Value................7.........:9
tRD Phase0 Adjustment...................:Auto
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...............7..........:9
tRD Phase0 Adjustment...................:Auto
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
Voltage Type.………... Manual
CPU
CPU Vcore….……….....1.26250V....................:1.3500 0V (1.332 in PC Health, 1.296 in cpuz)
CPU Termination…..... 1.200V*.......: 1.300V
CPU PLL……....……....1.550V*.......: 1.550V
CPU Reference………....0.805V*.......: Auto
MCH/ICH
MCH Core…………….....1.100V...........: 1.400V (had this increased trying to increase fsb, could probably be reduced)
ICH I/O……………….....1.550V............: 1.550V
DRAM
DRAM Voltage ……....1.800V............: 2.100V
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]
Integrated Peripherals
Legacy USB Storage Detect ..............[Enabled]
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