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G.Skill HZ/Any other UCCC (2x1024) 260+ please post here

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I'm with Icon57 & struggle to see how you get prime stable (blend test???) without. Have many times been the other way - Memtest passed not prime stable but never vice versa. :confused:

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I must agree with icon57 and Supershanks, I've never seen it happen like that! Almost always Memtest is stable with no problems but then Prime95 error's within an hour. I'm trying to think of what would cause that to heppen? When you ran Prime95 did you get errors at 12.5hrs or did you just stop the benchmark? As far as Memtest errors go, some people think that once you get even 1 errors you mine as well stop it (I tend to agree with that thinking). With that said since you only got 8 errors over the course of 16 full-passes you should be able to get it error free without too much effort, keep us posted!

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Couple of weeks ago I got only 1 error in memtest (at the end of 2nd pass - but no errors after 8 more full passes). Upon my e-mail to g.skill technician he recommended me to use windows based memtest like hci design - there are people on the net believing that memtest is not reliable...

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I haven't tested them for that long yet. I'll try test 5 for a longer period of time. Do you mean that I should run 2x Prime 95 and superPi 1mb at the same time? How do I start two different Prime 95 at the same time?

 

I'm sure of one thing though. Changing the Dram voltage didn't help at all. In fact running at 2,5v seems to work just as fine as 2,6->2,8v.

 

EDIT: I have now been running memtest, test 5 for 8 hours @ 260 MHz 2,6v (without any errors, of course). I've also updated my earlier post.

 

No not at the same time.

to run 2x prime you need 2 folders of prime, make a shortcut from each and name one prime95 0 and the other 1

Then right click on 1 and properties, add -A0 to the end of .exe"

so they should look like this

.exe" -A0

.exe" -A1

 

When you open the program up then goto affinity and select 0 for shortcut 0 and 1 for 1....

If you open task manager and goto processes you should see 2 boxes with both 100% and down the bottom should say 100% also

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What i've noticed with my pair of G.SKILL F1's is that if i'm stable at 264MHz 1:1 3447 2.6v i can't use a divider to up the cpu frequency and keep the memory at that same speed. I.E. 294x9 2.65GHz memory on 180divider 264MHz 3447 2.6v not stable, weird don't you think? So far i only could do 278x9 1.5v memory 180divider 250MHz 3448 2.6v Memtest86/Prime stable 8+ hours. Running my cpu 1:1 memory at 264MHz 3447 2.6v and cpu being 2.38GHz is stable, so i can't see why this isn't possible with the same settings that works for 264MHz using dividers. I'll post soon when i get some better OC in.....

 

Note:With my BH-5 i could run my 3000+ @300x9 DDR471 245Mhz 2225 3.5v but it wasn't Prime stable, memtest though. This CPU can hit 2.6GHz i think....

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OK...i have gone back to the drawing board......lol

 

 

it seems that, being stable 1:1 is alot easier than stable on a divider. For instance. I can get stable 1:1 all the way to 277mhz.....but i have yet to find a good stable setting for anything over 250 on a divider........WTH am i doing wrong?

 

Here are my current settings:

 

Motherboard: DFI LanParty NF4 Ultra-D

CPU: AMD Opteron 165 CCB1E 0550VPMW

RAM: 2x1GB G.Skill PC4000 (F1-4000USU2-2GBHZ)

BIOS: 704-2BTA

 

FSB Bus Frequency - 270

LDT/FSB Frequency Ratio - 3

CPU/FSB Frequency Ratio - 9

PCI eXpress Frequency - 100Mhz

 

CPU VID StartUp Value - AUTO

 

CPU VID Control - auto

CPU VID Special Control - Auto

LDT Voltage Control - 1.30v

Chip Set Voltage Control - 1.50v

DRAM Voltage Control - 2.5v

 

DRAM Configuration Settings:

 

DRAM Frequency Set - 200 = RAM/FSB 1:1

Command Per Clock (CPC) - Enable

CAS Latency Control (Tcl) - 03

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

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

Row precharge time (Trp) - 04 Bus Clocks

Row Cycle time (Trc) - 10 Bus Clocks

Row refresh cyc time (Trfc) - 14 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

DRAM Bank Interleave - Enabled

 

DQS Skew Control - auto

DQS Skew Value - 0

DRAM Drive Strength - weak3

DRAM Data Drive Strength - level 1

Max Async Latency - 9

DRAM Response Time - normal

Read Preamble Time - 6

IdleCycle Limit - 256 Cycles

Dynamic Counter - Disable

R/W Queue Bypass - 16 x

Bypass Max - 07 x

32 Byte Granularity - Disable(4 Bursts)

 

 

 

I have tried just about every combanation i have seen.........nothing seems to be stable in prime95x2 on a divider.

 

I need some help bad!!

 

CJ

 

 

I have my Opteron165 up to 302HTT prime95 stable for 12+hours on 180 divider, check my sig for BIOS and DRAM settings. You could give them a try and see if it helps get a higher O/C on a divider.

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It's the timings, trust me! I just made a break through, HA HA. Okay now i'm at 289x9 2.6GHz 1.55v memory 180 divider @260MHz 3448 2.6v using my 250 timings which seems to be working. I haven't tried PRIME yet, but Memtest test #5 passed 19 times so far.

 

 

Note: Prime/Memtest STABLE 278x9 180divider 250MHz 3448 2.6v and 264x9 1:1 3447 2.6v so far....still looking into how i can have my ram run SYNC with my cpu @2.6GHz :)

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Ok....i did alot of testing......whew....finally got somewhere.

 

Alright, here are my timings for 270mhz, 276mhz(which was my MAX) and 252mhz.

 

Motherboard: DFI LanParty NF4 Ultra-D

CPU: AMD Opteron 165 CCB1E 0550VPMW

RAM: 2x1GB G.Skill PC4000 (F1-4000USU2-2GBHZ)

BIOS: 704-2BTA

 

FSB Bus Frequency - 276

LDT/FSB Frequency Ratio - 3

CPU/FSB Frequency Ratio - 9

PCI eXpress Frequency - 100Mhz

 

CPU VID StartUp Value - AUTO

 

CPU VID Control - auto

CPU VID Special Control - Auto

LDT Voltage Control - 1.30v

Chip Set Voltage Control - 1.50v

DRAM Voltage Control - 2.6v

 

DRAM Configuration Settings:

 

DRAM Frequency Set - 200 = RAM/FSB 1:1

Command Per Clock (CPC) - Enable

CAS Latency Control (Tcl) - 03

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

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

Row precharge time (Trp) - 04 Bus Clocks

Row Cycle time (Trc) - 10 Bus Clocks

Row refresh cyc time (Trfc) - 14 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) - 04 Bus Clocks

Refresh Period (Tref) - auto

DRAM Bank Interleave - Enabled

 

DQS Skew Control - decrease

DQS Skew Value - 255

DRAM Drive Strength - weak1

DRAM Data Drive Strength - level 1

Max Async Latency - 10

DRAM Response Time - normal

Read Preamble Time - 7

IdleCycle Limit - 256 Cycles

Dynamic Counter - Disable

R/W Queue Bypass - 16 x

Bypass Max - 07 x

32 Byte Granularity - Enable(2 Bursts)

 

 

And, the best results where at 270mhz, where i was able to tighten up timings a bit(3-4-3-8). This seems to be the really sweet spot for this set.

 

 

Motherboard: DFI LanParty NF4 Ultra-D

CPU: AMD Opteron 165 CCB1E 0550VPMW

RAM: 2x1GB G.Skill PC4000 (F1-4000USU2-2GBHZ)

BIOS: 704-2BTA

 

FSB Bus Frequency - 270

LDT/FSB Frequency Ratio - 3

CPU/FSB Frequency Ratio - 9

PCI eXpress Frequency - 100Mhz

 

CPU VID StartUp Value - AUTO

 

CPU VID Control - auto

CPU VID Special Control - Auto

LDT Voltage Control - 1.30v

Chip Set Voltage Control - 1.50v

DRAM Voltage Control - 2.6v

 

DRAM Configuration Settings:

 

DRAM Frequency Set - 200 = RAM/FSB 1:1

Command Per Clock (CPC) - Enable

CAS Latency Control (Tcl) - 03

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

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

Row precharge time (Trp) - 03 Bus Clocks

Row Cycle time (Trc) - 10 Bus Clocks

Row refresh cyc time (Trfc) - 14 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) - 04 Bus Clocks

Refresh Period (Tref) - auto

DRAM Bank Interleave - Enabled

 

DQS Skew Control - auto

DQS Skew Value - 0

DRAM Drive Strength - weak1

DRAM Data Drive Strength - level 1

Max Async Latency - 9

DRAM Response Time - normal

Read Preamble Time - 6.5

IdleCycle Limit - 256 Cycles

Dynamic Counter - Disable

R/W Queue Bypass - 16 x

Bypass Max - 07 x

32 Byte Granularity - Disable(4 Bursts)

 

 

My 252mhz results from my update........nice timings for DDR504!!!

 

 

Motherboard: DFI LanParty NF4 Ultra-D

CPU: AMD Opteron 165 CCB1E 0550VPMW

RAM: 2x1GB G.Skill PC4000 (F1-4000USU2-2GBHZ)

BIOS: 704-2BTA

 

FSB Bus Frequency - 280

LDT/FSB Frequency Ratio - 3

CPU/FSB Frequency Ratio - 9

PCI eXpress Frequency - 100Mhz

 

CPU VID StartUp Value - AUTO

 

CPU VID Control - auto

CPU VID Special Control - Auto

LDT Voltage Control - 1.30v

Chip Set Voltage Control - 1.50v

DRAM Voltage Control - 2.6v

 

DRAM Configuration Settings:

 

DRAM Frequency Set - 180 divider (252mhz DDR504)

Command Per Clock (CPC) - Enable

CAS Latency Control (Tcl) - 03

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

Min RAS# active time (Tras) - 05 Bus Clocks

Row precharge time (Trp) - 03 Bus Clocks

Row Cycle time (Trc) - 10 Bus Clocks

Row refresh cyc time (Trfc) - 14 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) - 04 Bus Clocks

Refresh Period (Tref) - auto

DRAM Bank Interleave - Enabled

 

DQS Skew Control - auto

DQS Skew Value - 0

DRAM Drive Strength - weak1

DRAM Data Drive Strength - level 1

Max Async Latency - 9

DRAM Response Time - normal

Read Preamble Time - 6.5

IdleCycle Limit - 256 Cycles

Dynamic Counter - Disable

R/W Queue Bypass - 16 x

Bypass Max - 07 x

32 Byte Granularity - Disable(4 Bursts)

 

OK.....i updated this to add my 252mhz settings. 280*9 180 divider= 252mhz ram, settings are just above this.....

 

 

 

A few notes: These sticks seem to be very sensitive to drive strength and drive stength data, along with max async latency and read preamble time. Another thing i noticed was the they respoded very strange to tref. I got the best results by leaving it on auto, which seems to default to the lowest setting for the ram speed you have selected(divider). 32 byte granulatirty was also a big player in stablity at high clocks. TRC and TRFC was somewhat sensitive, but not a huge player, just helped in tweaking after stability was gained from the other major settings mentioned above.

 

I recommend using memtest test#8 to find the quikest errors, then after getting all the errors out of test #8, move to test#5 for the final tweaking. Once memtest stable, go to prime95 and do the torture test large FFT's or the more memory intense Blend test(which i prefer).

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nice work teamxrsx...and good info too!

i am going to give your settings a try and see if i can up my clock a tad more.

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I must agree with icon57 and Supershanks, I've never seen it happen like that! Almost always Memtest is stable with no problems but then Prime95 error's within an hour. I'm trying to think of what would cause that to heppen? When you ran Prime95 did you get errors at 12.5hrs or did you just stop the benchmark? As far as Memtest errors go, some people think that once you get even 1 errors you mine as well stop it (I tend to agree with that thinking). With that said since you only got 8 errors over the course of 16 full-passes you should be able to get it error free without too much effort, keep us posted!

 

 

no error i just wanted to use the pc

i use the blend test and i find it odd to I never had this happen when memtest had errors i would see it in the os of in prime.

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