ep45-ud3r:8gb ddr2 @1066. is it possible?

[mr.jones]

so i am running a ep45-ud3r, with a kentsfield quadcore 2.4 oc to 3.2

i am trying to get 8gb of OCZ Reaper HPC OCZ2RPR10662G to run at 1066. i have talked to both ocz tech support as well as gigabyte, both over the phone...i dont know what it is with people who are supposed to help over the phone.....but needless to say, the geniuses they hire....ugh. i was told by ocz tech twice that i would just have to run them at 800 and basically suck it up. why on earth would i want 8gb of ddr2 anyway? ugh. gigabyte was even more disappointing....their sage advice was "maybe the ram just dont like the board". "maybe the board cannot accept the ram"...... ok.

so i am now posting here and reading reading reading....whew. i am fairly new but not an idiot in relation to tweaking and oc a board. anyone have any timings and voltage suggestions for me?

settings i was using 5-7-7-20, tRFC 72, CR 2T. worked for a day and then the next morning...kaput.

my bios is f5. would flashing to f10 help me resolve my memory issues? thanks to everyone in advance who tells me something other than they just dont like each other

[Psycho101]

Re: ep45-ud3r:8gb ddr2 @1066. is it possible?

Starting with the recommended settings for the RAM (on the side of the modules) which I believe are 5-5-5-15 @ 2.3V, increase MCH core. Start with 1.2V and try all the way up to 1.36V-1.38V in 0.02V increments.

8GB of RAM is hard to get running at its rated speeds, that much is true. There may also be a compatibility issue. have a search of the forum and you'll see 6-7 posts in the last few months regarding OCZ Reaper. If an increase of voltage and/or loosening of latencies doesn't work, there's no other alternative to either running at DDR-800 or removing 4GB. Unless you run virtual machines, CAD or audio/video/photo editing, the move down to 4GB will not be noticeable at all. If using 32 bit programs, even in a 64bit OS, the process won't be able to grow past 2GB in the first place.

[KayossZero]

Re: ep45-ud3r:8gb ddr2 @1066. is it possible?

Starting with the recommended settings for the RAM (on the side of the modules) which I believe are 5-5-5-15 @ 2.3V, increase MCH core. Start with 1.2V and try all the way up to 1.36V-1.38V in 0.02V increments.

8GB of RAM is hard to get running at its rated speeds, that much is true. There may also be a compatibility issue. have a search of the forum and you'll see 6-7 posts in the last few months regarding OCZ Reaper. If an increase of voltage and/or loosening of latencies doesn't work, there's no other alternative to either running at DDR-800 or removing 4GB. Unless you run virtual machines, CAD or audio/video/photo editing, the move down to 4GB will not be noticeable at all. If using 32 bit programs, even in a 64bit OS, the process won't be able to grow past 2GB in the first place.

Agreed. ^

mr.jones, unless you know you need 8GB or more I wouldn't worry about it. I'm using 4GB of the same exact ram you're using and I'm loving it, in my custom made WinXP (178 MB ISO that is fully functioning and has built in AHCI/Raid drivers so install is painless compared to a stock XP combined with low memory/windows folder usage) I never have problems with memory, my hard drives are optimized extremely well with Ultimate Defrag and my Pagefile is only 64MB. (some games/apps need it on period to work)

Windows 7 64bit is also performing well on my second HD from what I'm seeing (only played with it for a few hours atm) so as Psycho said unless you need it I wouldn't sweat it.

[profJim]

Re: ep45-ud3r:8gb ddr2 @1066. is it possible?

You might be able to run 8GB of memory at somewhat lower speeds in the 900 - lower 1000MHz range by selecting different cpu multiplier/host frequency and system memory multiplier.

In order for us to help, you should add your hardware list to your forum signature and post your current bios settings using the generic bios template below. Follow the suggestions in this post.

Motherboard: Model:  Rev#:  Bios Version:
Cpu: Model
Ram: Brand, Model/Part#, Link to your ram's specs
Power Supply Unit: Brand, Model#, Wattage

Default settings for new setups that are not overclocked.

note: replace all ?? with the value displayed in your bios.
----> Replace "Auto" with manually set values.

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster -------------- : [Auto] <--- FAST is OK
CPU Clock Ratio ---------------------- : [##]
Fine CPU Clock Ratio ----------------- : [0.0] < ignore if not available
CPU Frequency ---------------------: ####

Clock Chip Control
Standard Clock Control
CPU Host Clock Control --------------- : [Enabled]
CPU Host Frequency (Mhz) --------------: [Mhz]
PCI Express Frequency (Mhz) ---------- : [Auto] <--- Set to 100, never leave this on Auto

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 ------------------- : [Turbo] <--- set to DISABLED when overclocking
Extreme Memory Profile --- (X.M.P.) --- : [Disabled] <--- Leave this Disabled
(G)MCH Frequency Latch ---------------- : [Auto]
System Memory Multiplier -------------- : [Auto]
Memory Frequency (Mhz) ---------------- : [Auto]
DRAM Timing Selectable ---------------- : [Auto] <-- set to MANUAL for overclocking

Standard Timing Control
CAS Latency Time -------- ?? ---------- : [Auto]
tRCD  ------------------- ?? ---------- : [Auto]
tRP --------------------- ?? ---------- : [Auto]
tRAS  ------------------- ?? ---------- : [Auto]

Advanced Timing Control
tRRD  ------------------- ?? ---------- : [Auto]
tWTR  ------------------- ?? ---------- : [Auto]
tWR --------------------- ?? ---------- : [Auto]
tRFC  ------------------- ?? ---------- : [Auto]
tRTP  ------------------- ?? ---------- : [Auto]
Command Rate (CMD) -------------------- : [Auto] <--- Auto or 0 is OK

Driving Strength Profiles
Driving Strength --------- : Press Enter <--- press ENTER to modify memory sub-timings when overclocking

Channel A
Static tRead Value --------------------- : [Auto]
tRD Phase0 Adjustment ------------------ : [Auto] <-- leave this and below set to 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 --------------------- : [Auto]
tRD Phase0 Adjustment ------------------ : [Auto] <-- leave this and below set to 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
CPU
Voltage Types------------ Normal -------- Current -----
Load-Line Calibration ----------------- : [Disabled]
CPU Vcore --------------- 1.?????  ---- : [Auto] <--- set to the 1.????? value

CPU Termination --------- 1.200V* ----- : [Auto] <--- set to the value to the left (Auto over-volts this too much when overclocking) Auto is OK if not overclocking
CPU PLL ----------------- 1.500V* ----- : [Auto] <--- set to the value to the left (Auto over-volts this too much when overclocking) Auto is OK if not overclocking

CPU Reference ----------- 0.755V* ----- : [Auto] <--- Auto Will set this correctly
CPU Reference2 ---------- 0.800V* ----- : [Auto] <--- Auto Will set this correctly

MCH/ICH
MCH Core ---------------- 1.100V ------- : [Auto] <--- set to 1.20 for 2x2GB ram (1.24 - 1.26, or 1.05 might be needed)
MCH Reference ----------- 0.800V ------- : [Auto]
MCH/DRAM Ref ------------ 0.900V  ------ : [Auto]
ICH I/O ----------------- 1.500V ------- : [Auto] <--- set to the value to the left
ICH Core ---------------- 1.100V ------- : [Auto] <--- set to the value to the left
DRAM
DRAM Voltage ------------ 1.800V ------- : [Auto] <--- set to the max rated ram voltage (for most memory)
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] <--- Enabled if you use Vmware/Virtual PC

Integrated Peripherals
Legacy USB Storage Detect  ------------- : [Enabled] <--- set to Disabled when overclocking (this must be enabled to flash or boot from a USB drive)