4ghz settings for ep45-ds3r

[noobler]

hi,

I'm just after some OC settings specific to my system for a nice 4ghz OC. I am currently getting 3.75 ghz stable previously on 1.325 volts with 500mhz fsb at 1:1 with mem for ddr2 1000mhz at 5-5-5-18 on stock hsf. The only settings I really changed were vCore to 1.325V, dram to 1.9V and mch to 1.2V. However as i got my new hsf and wanting to bump it up, I'm having problems getting stable at 4ghz (i'm just bumping up the vcore to about 1.38) and I think it may be either volts or memory settings related. I tried some settings i found elsewhere and got this board running fine at 4ghz on only 1.3V vCore (was 1.25 under load). It OCCTed for 1hr but failed to even start Crysis Harbour/Assult demo loop benchmark =(.

Specs of importance are as follows:
cpu: e8500 e0 VID 1.25
hsf: xigmatek S1283
ram: 2x http://www.corsair.com/_datasheets/T...096-6400C5.pdf (i.e. 4 sticks of 2gb ddr2 800 currently OC to 1000mhz @ 5-5-5-18)
psu: corsair 620w
vga: 4870x2 @ stock (constant 50% fan speed)
rest: 1 hdd, 1 dvd-r, ~5 120mm case fans (3 in, 2 out), antec 300 case

I believe i have a fairly decent system and i just need some settings to guide me to a nice 4ghz stable oc please! my system at 3.75ghz is only 45 deg C under full load with the new hsf (from 63 deg C with stock hsf) @ 25 deg C ambient temps.

My settings for 3.75Ghz are as follows and I'm running latest F10 bios. Any assistance would be greatly appreciated from gurus.

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: auto
CPU Clock Ratio ..........................: 7
Fine CPU Clock Ratio.....................: 0.5
CPU Frequency ...........................: 3750


Clock Chip Control
Standard Clock Control
CPU Host Clock Control..................: [Enabled]
CPU Host Frequency (Mhz) ............: 500Mhz
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)....................: <<< 200
MCH Clock Skew (ps)...................: <<< 100


DRAM Performance Control
Performance Enhance...................: [STANDARD]
Extreme Memory Profile (X.M.P.).....: Disabled
(G)MCH Frequency Latch...............: 333

System Memory Multiplier ..............: 2.0B (I think it's 2.0B? I'm not at home atm but it's whatever it is to get fsb:dram at 1:1)

Memory Frequency (Mhz) ..............: 1000
DRAM Timing Selectable ................: [Manual]

Standard Timing Control
CAS Latency Time........................5
tRCD .........................................5
tRP'...........................................5
tRAS..........................................18

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

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

Channel A
Static tRead Value.........................:Auto
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......................... Auto
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….……….........................: 1.325
CPU Termination…..... 1.200V*.......: Auto
CPU PLL…………………....1.500V*.......: Auto
CPU Referen.…………....0.755V*.......: Auto

CPU Reference2………,,0.800V*.......:Auto <- I don't have this in my bios huh?

MCH/ICH
MCH Core…………….....1.100V...........: 1.2
MCH Reference….…….0.800V...........; Auto
MCH/DRAM Ref.…......0.900V...........: Auto
ICH I/O……………….....1.550V............: Auto
ICH Core…………...……1.100V............: Auto

DRAM
DRAM Voltage ……....1.800V............: 1.9
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]

[Lsdmeasap]

Re: 4ghz settings for ep45-ds3r

Try this for 4Ghz, vcore of course will be up to you to find >>>>

This will have your ram at 900, so you can run tighter timings. If you would like some settings for a lower CPU multi let me know

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Fast
CPU Clock Ratio ..........................: 9
Fine CPU Clock Ratio.....................: 0.0
CPU Frequency ...........................: 4.05


Clock Chip Control
Standard Clock Control
CPU Host Clock Control..................: [Enabled]
CPU Host Frequency (Mhz) ............: 450Mhz
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)....................: <<< 0-50
MCH Clock Skew (ps)...................: <<< 100-150


DRAM Performance Control
Performance Enhance...................: [STANDARD]
Extreme Memory Profile (X.M.P.).....: Disabled
(G)MCH Frequency Latch...............: 400

System Memory Multiplier ..............: 2.00D (I think it's 2.0B? I'm not at home atm but it's whatever it is to get fsb:dram at 1:1)

Memory Frequency (Mhz) ..............: 900
DRAM Timing Selectable ................: [Manual]

Standard Timing Control
CAS Latency Time........................5
tRCD .........................................4/5
tRP'...........................................4/5
tRAS..........................................12/15

Set all below to highest suggested first, then later lower and test with memtest86+ as you go

Advanced Timing Control
tRRD...........................................3-4
tWTR..........................................3-6 (May need 12 first time you set)
tWR............................................4-6 (May need 14 first time you set)
tRFC...........................................50-62 (May need 68 first time you set)
tRTP...........................................3-6
Command Rate (CMD) ....................:2

Driving Strength Profiles
Driving Strength ............................1066

Channel A
Static tRead Value.........................:9-10
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......................... 9-10
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….……….........................: 1.325 << MORE as you know
CPU Termination…..... 1.200V*.......: 1.2-1.36
CPU PLL…………………....1.500V*.......: << Set to stock, Auto gives this WAY TO MUCH (Same applies to vtt, Auto sets it Over the limit that will kill a 45nm cpu (Which is 1.4, Auto sets 1.5 vtt)

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

CPU Reference2………,,0.800V*.......:Auto <- I don't have this in my bios huh? Only higher up boards do DS4/Dq6 Ect

MCH/ICH
MCH Core…………….....1.100V...........: 1.2-1.26
MCH Reference….…….0.800V...........; Auto
MCH/DRAM Ref.…......0.900V...........: Auto
ICH I/O……………….....1.550V............: 1.55-1.6
ICH Core…………...……1.100V............: 1.1-1.2

DRAM
DRAM Voltage ……....1.800V............: 1.9-2.0
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]

[Lsdmeasap]

[noobler]

[Lsdmeasap]

Re: 4ghz settings for ep45-ds3r

Looks good. 2.1V will be fine, especially since you have a fan on them.

Yeah you can try lower MCH and this >>>
tRRD...........................................3-4
tWTR..........................................3-4
tWR............................................4-6
tRFC...........................................52-62
tRTP...........................................3-4
Command Rate (CMD) ....................:2

Driving Strength Profiles
Driving Strength ............................1066 1200

Channel A
Static tRead Value.........................:10 << 7-9