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Opteron 170 OC advice


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Looking for some advice on my settings. I'm having alot of problems getting through orthos but I can run through 3dmark easily. The thing that is really bothering me is that orthos is crashing damn near instantly, so I have no idea why I can even pass 3dmark at all :confused:

 

The ram is stable @ 260mhz with those settings. I'm just wondering if theres something else that could be holding me back while trying to go higher, or if my processor has reached its limit, which is very possible.

 

These are the settings I'm trying to get stable.

 

FSB Bus Frequency - 295

LDT/FSB Frequency Ration - 3

CPU/FSB Frequency Ratio - 10

PCI eXpress Frequency - 100Mhz

 

CPU VID StartUp Value - StartUp

 

CPU VID Control - 1.525v

CPU VID Special Control - Avove VID * 104%

LDT Voltage Control - 1.30v

Chip Set Voltage Control - 1.60v

DRAM Voltage Control - 2.5

DRAM Enable +.03v

 

DRAM Configuration Settings:

 

DRAM Frequency Set - 166 (DRAM/FSB:1/01)

Command Per Clock (CPC) - Enable

CAS Latency Control (Tcl) - 3.0

RAS# to CAS# delay (Trcd) - 04 Bus Clocks

Min RAS# active time (Tras) - 08 Bus Clocks

Row precharge time (Trp) - 4 Bus Clocks

Row Cycle time (Trc) - 07 Bus Clocks

Row refresh cyc time (Trfc) - 14 Bus Clocks

Row to Row delay (Trrd) - 02 Bus Clocks

Write recovery time (Twr) - 02 Bus Clocks

Write to Read delay (Twtr) - 02 Bus Clocks

Read to Write delay (Trwt) - 03 Bus Clocks

Refresh Period (Tref) - 3684 Cycles

Write CAS Latency (Twcl) - 1

DRAM Bank Interleave - Enabled

 

 

 

DQS Skew Control - Auto

DQS Skew Value - 0

DRAM Drive Strength - Level 7

DRAM Data Drive Strength - Level 3

Max Async Latency - 8.0

Read Preamble Time - 6.0

IdleCycle Limit - 256 Cycles

Dynamic Counter - Disable

R/W Queue Bypass - 16 x

Bypass Max - 07 x

32 Byte Granularity - Disable(8 Bursts)

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If you can't pass Orthos your rig is not stable.

 

Check the OCDB and check for settings with specs that are similar to your's.

 

What stepping is your Opteron 170?

 

Bump up your DRAM voltage to 2.7.

 

Bump up your Trc to about 12.

 

That's some high voltage to be pumping through that Opty. What are your temps like?

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sorry I thought the stepping was in my sig. I havent redone it in a while.

 

stepping is CCBBE 0615EPMW

 

Temps are good as I'm on watercooling now. Temps are under 50@ load. Dram voltage does not help. My ram actually doesnt seem to like extra voltage for some reason, it seems to do better with less.

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My HZs are the same way, they like less voltage, not more.

 

You & I have very similar rigs except for motherboard & our settings are very similar as well.

 

As for ram timings the only difference is:

 

RP = 5.5

DRAM DDS = 2

DRAM volt = 2.55

 

Also my LDT volt is 1.2 & Chipset is 1.52.

 

I am wondering if maybe the ram isn't happy... What happens if you bump your ram volts up a touch: 2.55-2.6? I know mine seem to be fine between 2.55 & 2.6, but they don't like lower then 2.55.

 

 

280x10 is stable @ 1.475, What kind of volts does it take to get 290x10 stable?

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Guest LookBackX2

Hi. We have the same stepping opty. I just noticed that your tref is different than mine. Otherwise most of the settings are real similar. Try 4708 tref, it was suggested to me for a more stable OC, and it worked.

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I tried 2.6v on the ram, no dice. Maybe I should consider picking a new bios to test. Mine is quite dated.

 

2.7ghz @ 1.375v

2.8 @ 1.475

2.9 @ 1.55

 

Really seems like I'm just reaching the limit. My cpu just seems like it would need ALOT of voltage to get any higher and I'm just not comfortable with that. Ofcourse I'm happy at 2.8ghz but I just wanted to try for that little more. It boots @ 3ghz so I was thinking I could make it, but I dont see that happening now. I do find it odd that I can pass 3dmark but cant even run orthos for a full minute. Normally I would always freeze up in 3dmark if it was that unstable. Thats why I wondering if my settings looked off.

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I, too, have the same stepping. I'm running 290x10 @ 1.45vcore and 15 hours Prime stable.

 

I think your voltage is way too high for 2950. In all honestly I would start over and loosen your RAM timings. Slapping some timings and voltages together and praying it works is a horrible idea.

 

Just because your opteron overclocks better then mine it does not mean I just slapped some timings and voltages together. You really have no idea if you think thats what I did....

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