Memtest Question

[ghuraba]

Hi there.

 

Is there a difference between the Memtest used in the bios and Windows Memtest? I can run the bios version of Memtest for 8 hours+ with no errors but if I use the Windows version I get errors. I've never used Memtest for Windows before so I'm not sure about this program. I can run Prime for 12 hours +, SuperPi and OCCT with no errors. I tested 1 stick of ram for 6 hours with no errors using Windows Memtest so I'm about to run the other stick to see if that gives me errors.

 

In the last week I have had a few random re-boots, even just browsing the internet. This is why I decided to run a few tests. Could instability in my ram cause random reboots? I was going to buy 2GB of G-Skill HZ PC4000 this week but the place I buy from is out of stock.

 

I'm using the following bios settings:

 

FSB Bus Frequency – 255

LDT/FSB Frequency Ratio - 3x

CPU/FSB Frequency Ratio – 11x

PCI eXpress Frequency - 105Mhz

 

CPU VID StartUp Value - STARTUP

 

CPU VID Control - 1.4v

CPU VID Special Control – Auto

LDT Voltage Control - 1.20v

Chip Set Voltage Control - 1.50v

DRAM Voltage Control - 2.9v

 

DRAM Configuration Settings:

 

DRAM Frequency Set - 180=RAM/FSB:11/12

Command Per Clock (CPC) - Enable

CAS Latency Control (Tcl) - 3

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) - 12 Bus Clocks

Row refresh cycle time (Trfc) - 16 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) - 3120 Cycles

DRAM Bank Interleave – Enabled

 

DQS Skew Control - Auto

DQS Skew Value - 0

DRAM Drive Strength - Level 7

DRAM Data Drive Strength - Level 1

Max Async Latency - 8.0 Nano Seconds

DRAM Response Time - Normal

Read Preamble Time - 6.0 Nano Seconds

IdleCycle Limit - 256 Cycles

Dynamic Counter - Disable

R/W Queue Bypass - 16 x

Bypass Max - 04 x

32 Byte Granularity - Disable(4 Bursts)

 

Michael

[ReelFiles]

I prefer the windows version, the way I think of it is that I want stability while running the OS, since I don't hang out in the bios all day long.

 

Did you search the OCDB for similar setups?

[ghuraba]

No I haven't as I thought I had a stable PC.

 

I think it is the ram/motherboard not getting along as this ram 'Corsair 1GB DDR XMS4400CAS2.5 TwinX (TCCD v1.1)' won't even run at 200mhz, ram/fsb 1/1 @default volts 2.6. I have to run at CAS3 @2.9 volts using the 180 divider to get it to even boot into Windows with the timings I posted.

 

Michael

[Brother Esau]

Good point Reelfiles!!!! And what up?

[ReelFiles]

Those sticks were tested by Corsair using 2T 2.5-4-8-4 @2.8v.

 

Nonetheless, running them slower but stable is a better option in my opinion, performance is barely affected running them on a divider or even CAS 3.

Try:

CPC - disabled

Trc - 7

Trfc - Auto

Trfc - 17-19

 

What's up Brother Esau?

Haven't gotten a chance to reply to your novel yet, but I will. LOL JK.

[Brother Esau]

Hey ReelFiles did ACE do youre ARNIE sig... lol Hey I will be getting a DFI board soon and I notice that you have the same Silverstone P.S.U as me how does it jive with the board?

[ghuraba]

Are you sure these sticks are T2? I always thoguht they were 1T. Here are the ones I own:

 

http://www.corsairmemory.com/corsair/produ...024-4400C25.pdf

 

Michael

[ReelFiles]

Look at my signature ... same RAM, 2T.

Corsair does not mention T1 or T2 anywhere on their site or in the spec pdf. I had to find out from Corsair tech support myself, he told me that they always tested those modules at 2T 2.5-4-8-4 2.8v.

 

You should be able to run them at those settings 1:1 with FSB Bus Frequency at 255. But if you have to you can use a divider with no noticable performance hit, as I posted earlier.

 

It's your advanced timing settings that are throwing you off.

[ghuraba]

Thanks for that information.

 

Well I just tried 200mhz, Ram/Fsb 1/1, [email protected] volts and Memtest still fails. I'm going to test the other stick on its own now as it might be that stick that is faulty.

 

Michael

 

P.S. are the timings you posted Trfc = Auto and Trfc 17-19 a choice of two to try or did you make a mistake with one of the letters?

[OtisN89]

I have corsair RAM and a DR and I also had trouble when I tried to run the RAM fast I have it at 208mhz now and it gets an error in Memtest but its stable in OCCT but anyhigher with the FSB/RAM ratio and it won't pass OCCT.

[ReelFiles]

I just posted what worked for me, and my RAM is at 265MHz atm.

 

I meant trfc- Auto or 17-19, sorry.

 

I would suggest bios Version 704 2BTA, but that's user preference.

 

How long did you run memtest86 for? I find it odd that you would get errors in memtest for windows but not the dos version.

[ghuraba]

I ran Memtest86 all last night, I think it was about 30 full passes of all tests. I would not pay any attention to memtest failing in Windows if it wasn't for these randow re-boots I've been getting for about 1 week. All other stability/games was stable 12 + hours. Memtest for Windows fails after about 90 minutes mostly.

 

Michael