EP-45-DS3R + E6850 + 4x1GB PC6400 overclock

[Mikkle]

Hi,

I just upgraded my BIOS and unfortunately lost my saved O/C settings. I need some assistance in getting back to 4 Ghz. Currently I seem to be stuck at 3.6 Ghz stable, and I'm not too sure what to look at next.

Here are my relevant system specs:

Gigabyte EP-45-DS3R (F10 bios)
Intel Core 2 Duo E6850
4x1GB Corsair CM2X1024-6400C4 (400Mhz, 2.1v, 4-4-12, pdf link)
750GB WD Caviar SE-16
Thermalright Ultra-120 Extreme + Scythe S-Flex
Corsair CMPSU-520HX

And current BIOS settings:

Let me know if you need anything else.

Thanks!

[Lsdmeasap]

[Mikkle]

Re: EP-45-DS3R + E6850 + 4x1GB PC6400 overclock

Thanks for the super-prompt reply!

Link to memory PDF is http://www.corsair.com/_datasheets/T...048-6400C4.pdf

I used to run 4.0 Ghz stable (checked w/ OCCT). Just trying to get back there :)

For cooling, I have a Thermalright Ultra-120 Extreme + Scythe S-Flex... basically this set up: AnandTech: Thermalright Ultra 120 Extreme: Is More Better? and AnandTech: UPDATE: Thermalright Ultra-120 eXtreme - Retail

[Mikkle]

Re: EP-45-DS3R + E6850 + 4x1GB PC6400 overclock

I am unable to get past 410 Mhz even with the new settings. I can log into Windows just fine, and it *seems* to run OK, but I can only do 1-5 seconds of OCCT before it crashes with a code 1 or code 4. Last measured temperature is 52 C, so I don't think the CPU is overheating yet.

Here are my new settings:


MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ..................: [Fast]
CPU Clock Ratio ..............................: 9
CPU Frequency ...............................: 3.69Ghz (410 FSB x 9)


Clock Chip Control
Standard Clock Control
CPU Host Clock Control...................: [Enabled]
CPU Host Frequency (Mhz) .............: [410]
PCI Express Frequency (Mhz) ..........: [100]


Advanced Clock Control [Press Enter]
CPU Clock Drive...........................: <<< 800
PCI Express Clock Drive.................: <<< 900
CPU Clock Skew (ps)....................: <<< 0 (need to try 50)
MCH Clock Skew (ps)....................: <<< 0 (need to try 50)

[Lsdmeasap]

Re: EP-45-DS3R + E6850 + 4x1GB PC6400 overclock

See if this helps for now >>>

That is just too many Auto's you are using for sure! These will be loose to get you going, then you can lower once you get your CPU where you want it

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ..................: [Fast]
CPU Clock Ratio ..............................: 9
CPU Frequency ...............................: 3.69Ghz (410 FSB x 9)


Clock Chip Control
Standard Clock Control
CPU Host Clock Control...................: [Enabled]
CPU Host Frequency (Mhz) .............: [410]
PCI Express Frequency (Mhz) ..........: [100]


Advanced Clock Control [Press Enter]
CPU Clock Drive...........................: <<< 800
PCI Express Clock Drive.................: <<< 900
CPU Clock Skew (ps)....................: <<< 0 (need to try 50) << Yeap
MCH Clock Skew (ps)....................: <<< 0 (need to try 50) << Ya, I would try 150 actually


DRAM Performance Control
Performance Enhance....................: [STANDARD]
Extreme Memory Profile (X.M.P.)........: Disabled
(G)MCH Frequency Latch.................: [Auto]
System Memory Multiplier ..............: [2.00D]
Memory Frequency (Mhz) ................: [820]
DRAM Timing Selectable ................: [Auto]

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

Advanced Timing Control
tRRD............................................: 3
tWTR.......................................... : 5
tWR.............................................: 6
tRFC............................................: 62

tRTP............................................: 3
Command Rate (CMD) ....................: 2

Channel A
Static tRead Value.........................See below
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 ??? You should be setting this, Auto will possibly set it to low. Use 10-12 for now until you get stable again then lower. Applies above of course too, I just start at the bottom.

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….………......1.35V...........: 1.46v << Bit more to be stable here, alot more may be needed to get 4Ghz stable (What are you getting for actual in windows at this setting)

CPU Termination…..... 1.200V.........: 1.44v <<< Bit more
CPU PLL…………………....1.500V.........: 1.6v
CPU Referen.…………....0.760V.........: Auto

MCH/ICH
MCH Core…………….....1.100V...........: 1.28v
MCH Reference….…….0.760V...........; Auto
MCH/DRAM Ref.…......0.900V...........: Auto
ICH I/O……………….....1.500V............: 1.6v

DRAM
DRAM Voltage ……....1.800V............: 2.1v

[Mikkle]

Re: EP-45-DS3R + E6850 + 4x1GB PC6400 overclock

Thanks, that's exactly what I needed. I'm finally making some progress, thanks to you.

Here is what I've got right now and it seems to be running stable at 3.69Ghz:

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ..................: [Fast]
CPU Clock Ratio ..............................: 9
CPU Frequency ...............................: 3.69Ghz (410 FSB x 9)


Clock Chip Control
Standard Clock Control
CPU Host Clock Control...................: [Enabled]
CPU Host Frequency (Mhz) .............: [410]
PCI Express Frequency (Mhz) ..........: [100]


Advanced Clock Control [Press Enter]
CPU Clock Drive...........................: <<< 800
PCI Express Clock Drive.................: <<< 900
CPU Clock Skew (ps)....................: <<< 50
MCH Clock Skew (ps)....................: <<< 150


DRAM Performance Control
Performance Enhance....................: [STANDARD]
Extreme Memory Profile (X.M.P.)........: Disabled
(G)MCH Frequency Latch.................: [Auto]
System Memory Multiplier ..............: [2.00D]
Memory Frequency (Mhz) ................: [820]
DRAM Timing Selectable ................: [Auto]

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

Advanced Timing Control
tRRD............................................: 3
tWTR.......................................... : 5
tWR.............................................: 6
tRFC............................................: 62

tRTP............................................: 3
Command Rate (CMD) ....................: 2

Channel A
Static tRead Value.........................: 12
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.........................: 12 << a bit high I know, but I can always lower it once stable. Currently at 65 C after 10 mins of full stress.

[Lsdmeasap]

Re: EP-45-DS3R + E6850 + 4x1GB PC6400 overclock

Looking good, ya you can always lower your voltages and tighten timings after you get where you want to go! Best to keep voltage higher and timings loose so you can push things until you get where you want. Then spend a day or few tightening up things and testing/lower voltages.

Good luck, and I will see ya later today or tonight!

[Mikkle]

Re: EP-45-DS3R + E6850 + 4x1GB PC6400 overclock

Hmm, crashes after 5 seconds at 3780 Mhz (420Mhz bus)... I wonder if I need to up my RAM voltage, 2.1v is what they recommend for non-overclocked speeds. I don't want to up vcore much more since I'm already at 45 C idle, and 65 C under full load.

[Mikkle]

Re: EP-45-DS3R + E6850 + 4x1GB PC6400 overclock

Thanks again. I'm going to stay on this BIOS version and keep the CPU at 3.7 Ghz for now. I can get it up higher, but only with higher vcore and an open case, so definitely not ideal :)

So now I'm going back down the other direction... Is there a preferred order in which to tighten up those settings?

[Lsdmeasap]

Re: EP-45-DS3R + E6850 + 4x1GB PC6400 overclock

I would tighten Static tRD first then the rest from top to bottom

[tIm0210]

Re: EP-45-DS3R + E6850 + 4x1GB PC6400 overclock

hello~~need help to overclocked till 4GHz my computer spec=Gigabyte EP45-Extreme..E6850..Patriot PVS24G8500ELKR2 Viper 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) 5-5-5-15 ..Zalman CNPS9700 LED Ultra Silent CPU COOLER(BP) Pure Copper w/ LED...SAPPHIRE Radeon HD 4850 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card

[Lsdmeasap]

Re: EP-45-DS3R + E6850 + 4x1GB PC6400 overclock

Please link to your ram.

That CPU may not even do 4Ghz under water. For sure not likely to do much above 3.6-3.8 with your cooler. Where are you running at now?

[tIm0210]

Re: EP-45-DS3R + E6850 + 4x1GB PC6400 overclock

u mean I should change water cooling?I'm running at 3.8GHz nw but still test..I think not stable..sorry~my english not very well..I understand what u mean I can check with dictionary but I don't know how should I reply to u..=(

[tIm0210]

Re: EP-45-DS3R + E6850 + 4x1GB PC6400 overclock

I run the ORTHOS exe and my pc restart automaticaly..mean not stable ya~??what should I do now??

[Lsdmeasap]

Re: EP-45-DS3R + E6850 + 4x1GB PC6400 overclock

Ahh, sounds like you may need more voltage then if orthos crashes right away