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Problem with Timings or Voltage?

post #1 of 6
Thread Starter 
So I've been playing with the Timings on my Ram, attempting to tighten things up a little better...

I have G-Skill Ripjaws; two sets of 4GB for a total of 8GB...

Now I am not entirely sure if the Ram is this cause of the problem I had, but it seems a likely place to start.

Stock Timings are 9-9-9-24 at 1.5v.

I managed to tweak them down to 7-8-7-24 and everything seems to run ok...


So I seemingly had a stable tweaking of my Timings and its been running great like this for several weeks with no problems, and now after a recent change in cooling I chose to start playing with my CPU overclock, as well as tweak the NB-CPU and the HTLink; the latter of the two I bumped up to 2400 each.

The CPU, I went straight for the throat and bumped up to an x20.0 Multi for a full 4.0ghz at a Vcore of 1.475v. Everything seems to be running OK... under heavy load and stress the temps never passed 50c... had Prime95 running for about 30mins, though I KNOW every says it should run for hours, I typically have it run because if there IS a problem, it usually catches it right away within first or second round of tests...

I decided to try a little more RAM tweaking, and went to adjust the Timings again, this time 7-7-7-22...

Then I started playing LFD2, only to find that the Game would crash after about 15 minutes; however no Bluescreen, and NO errors recorded in Win 7 Events Log/Viewer. Ok, so maybe it did not like that last Ram change.

I loaded up Prime95, and bam it too crashed after just 4 tests within 10 minutes.

Went and changed Ram back to 7-8-7-24; but left the other OC's on the NB-CPU, HTLink and CPU Multi... loaded back up into Prime95 and let it run for an hour this time and never saw it crash or fail, and again temps never passed 50c.

Without leaving it running over night like that to know for sure, I'm presuming I have things ok and stable for now.

Only, now I go into a program that I use almost every day, and never have any problems with... Second Life.

It starts crashing within 20 - 30 minutes of use; which its never done before.

The application simply closes, shuts down, no bluescreen and again no errors recorded in Event Viewer; the application simply closes to Windows Desktop.

I typically take this sort of crash to be a RAM problem... but just to be sure, I went back into BIOS and defaulted my CPU Multi, HTLink and CPU-NB back to their default settings...

But left the RAM tweaks in place at 7-8-7-24; as originally I stated above that I had this set for several weeks and never had problems with it.

SO.

Is it possible, there could be some hidden problem with this, that does not rear its ugly head unless I try to Overclock something else along side it?

Another suspect here is that I discovered that my BIOS was auto defaulting my DRAM Voltage to 1.64v; even after I reset Timings back to default 9-9-9-24, it was still defaulting to 1.64v...

I manually adjusted this to 1.5v; and set Timings back to 7-8-7-24; and the machine now will not boot.

Shut off power, then restarted, and it tells me the previous OC failed, so I go and adjust Timings to 8-8-8-24; and it boots fine but going back to 7-8-7-24 and at 1.5v and again, it will not boot. I reset, and went and changed the Dram Volts to 1.55v and left Timings at 7-8-7-24 and its booting fine.

SO!

With this in mind, the previous crashing I experienced with LFD2, Prime95, and then Second Life...

Could the DRAM Volts defaulting to 1.64v have been the problem there? Was it possible the RAM was getting too much voltage?
     
CPUMotherboardGraphicsRAM
MOS Technology 6502B @ 1.79mhz! Atari XL Series 8bit w/ 24K ROM ANTIC/CTIA - Color Television Interface Adaptor 64K RAM 
Hard DriveHard DriveHard DriveCooling
Atari 1050 5½ Floppy Disk Drive Atari 1050 5½ Floppy Disk Drive Atari 1010 Cassette Deck Tape Drive One 12" A/C Desk Fan. 
OSOSOSMonitor
DOS 3.0 on 5½ Floppy Disk!! Atari BASIC on 24k ROM!! Atari BASIC Cartridge!! Samsung 32" LCD Television 
KeyboardAudio
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CPUMotherboardGraphicsRAM
MOS Technology 6502B @ 1.79mhz! Atari XL Series 8bit w/ 24K ROM ANTIC/CTIA - Color Television Interface Adaptor 64K RAM 
Hard DriveHard DriveHard DriveCooling
Atari 1050 5½ Floppy Disk Drive Atari 1050 5½ Floppy Disk Drive Atari 1010 Cassette Deck Tape Drive One 12" A/C Desk Fan. 
OSOSOSMonitor
DOS 3.0 on 5½ Floppy Disk!! Atari BASIC on 24k ROM!! Atari BASIC Cartridge!! Samsung 32" LCD Television 
KeyboardAudio
Built-In Television Audio! 
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post #2 of 6
This RAM kit usually doesn't like a tRCD below 8.
Why 7-8-7 would start crashing when it didn't before is weird. Perhaps the RAM overheated during OC?
The 1.64V may be necessary to run 7-8-7 by the way. However, 1.64V could be too much, it supports my previous theory of overheating RAM; since the RAM is close together and you run 8GB, that seems to make sense. 1.55V may be a better idea, but it would probably be at least necessary over 1.5.
post #3 of 6
Thread Starter 
Quote:
Originally Posted by xd_1771 View Post
This RAM kit usually doesn't like a tRCD below 8.
Why 7-8-7 would start crashing when it didn't before is weird. Perhaps the RAM overheated during OC?
The 1.64V may be necessary to run 7-8-7 by the way. However, 1.64V could be too much, it supports my previous theory of overheating RAM; since the RAM is close together and you run 8GB, that seems to make sense. 1.55V may be a better idea, but it would probably be at least necessary over 1.5.
That, is pretty much what I've been thinking too...

Just out of curiosity, I went back and tried 7-7-7-24, at 1.55v.. and again the system refused to boot.

Went back to 7-8-7-24 at 1.55v and its booting. IF, I continue to have no problems like this throughout the rest of the day, then I'm going to presume its stable and will run Prime95 on it again over night to make sure.

As for over heating...

I have a 120mm Fan sitting in my 5.25 bays not but 4 - 5 inches from the Ram, running as the Pull Fan on my H50 Rad; its blowing directly on the Ram and the air its blowing isn't all that hot; probably about 29 - 30 degrees celsius while idling the system.. 40c under load; based on CoreTemp reporting my CPU temps. Putting my hand on the Ram sticks shows that they're not warm/nor hot; in fact quite comfortable to touch; and that was even when they were defaulting to 1.64v...
     
CPUMotherboardGraphicsRAM
MOS Technology 6502B @ 1.79mhz! Atari XL Series 8bit w/ 24K ROM ANTIC/CTIA - Color Television Interface Adaptor 64K RAM 
Hard DriveHard DriveHard DriveCooling
Atari 1050 5½ Floppy Disk Drive Atari 1050 5½ Floppy Disk Drive Atari 1010 Cassette Deck Tape Drive One 12" A/C Desk Fan. 
OSOSOSMonitor
DOS 3.0 on 5½ Floppy Disk!! Atari BASIC on 24k ROM!! Atari BASIC Cartridge!! Samsung 32" LCD Television 
KeyboardAudio
Built-In Television Audio! 
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CPUMotherboardGraphicsRAM
MOS Technology 6502B @ 1.79mhz! Atari XL Series 8bit w/ 24K ROM ANTIC/CTIA - Color Television Interface Adaptor 64K RAM 
Hard DriveHard DriveHard DriveCooling
Atari 1050 5½ Floppy Disk Drive Atari 1050 5½ Floppy Disk Drive Atari 1010 Cassette Deck Tape Drive One 12" A/C Desk Fan. 
OSOSOSMonitor
DOS 3.0 on 5½ Floppy Disk!! Atari BASIC on 24k ROM!! Atari BASIC Cartridge!! Samsung 32" LCD Television 
KeyboardAudio
Built-In Television Audio! 
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post #4 of 6
Thread Starter 
Quote:
Originally Posted by xd_1771 View Post
This RAM kit usually doesn't like a tRCD below 8.
Why 7-8-7 would start crashing when it didn't before is weird. Perhaps the RAM overheated during OC?
The 1.64V may be necessary to run 7-8-7 by the way. However, 1.64V could be too much, it supports my previous theory of overheating RAM; since the RAM is close together and you run 8GB, that seems to make sense. 1.55V may be a better idea, but it would probably be at least necessary over 1.5.
Ah...

Well, Windows may have loaded up fine with 7-8-7-24 @ 1.55v...

But, Second Life crashed and caused a Bluescreen the moment I logged into it. So you may be right, all these past several weeks that everything had been running fine at 7-8-7-24 with the voltage defaulted at 1.64v had it running stable all that time...

But then something with the other Overclocks did not agree with it...

Then testing the Timings at 1.55v... and I get my first Bluescreen in months, go figure!

This was quite an educational experiment for me!

For now, I'm defaulting back to the Ram defaults of 999-24 @ 1.5v so I can get some work done that I've put off all day! LOL
     
CPUMotherboardGraphicsRAM
MOS Technology 6502B @ 1.79mhz! Atari XL Series 8bit w/ 24K ROM ANTIC/CTIA - Color Television Interface Adaptor 64K RAM 
Hard DriveHard DriveHard DriveCooling
Atari 1050 5½ Floppy Disk Drive Atari 1050 5½ Floppy Disk Drive Atari 1010 Cassette Deck Tape Drive One 12" A/C Desk Fan. 
OSOSOSMonitor
DOS 3.0 on 5½ Floppy Disk!! Atari BASIC on 24k ROM!! Atari BASIC Cartridge!! Samsung 32" LCD Television 
KeyboardAudio
Built-In Television Audio! 
  hide details  
Reply
     
CPUMotherboardGraphicsRAM
MOS Technology 6502B @ 1.79mhz! Atari XL Series 8bit w/ 24K ROM ANTIC/CTIA - Color Television Interface Adaptor 64K RAM 
Hard DriveHard DriveHard DriveCooling
Atari 1050 5½ Floppy Disk Drive Atari 1050 5½ Floppy Disk Drive Atari 1010 Cassette Deck Tape Drive One 12" A/C Desk Fan. 
OSOSOSMonitor
DOS 3.0 on 5½ Floppy Disk!! Atari BASIC on 24k ROM!! Atari BASIC Cartridge!! Samsung 32" LCD Television 
KeyboardAudio
Built-In Television Audio! 
  hide details  
Reply
post #5 of 6
Well, to be risking it is one plus for sure. At least you know you were able to run 7-8-7 at one point now that's an average-ish but good result for that kit.
post #6 of 6
I would suggest dropping your HT link back down to 2000MHz, there is pretty much no performance gain over that, all it does is cause possible instability. Also, sometimes your CPU-NB voltage needs a bump to run RAM at faster/tighter settings.
    
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CPUMotherboardGraphicsRAM
i7 2600k ASRock P67 Extreme4 MSI GTX 580 Lightning 2x4GB Corsair Vengeance DDR3 1866 9-10-9-27-1T 
Hard DriveOptical DriveCoolingOS
Mushkin 60GB SSD + 2xWD Black 500GB RAID0 Sony DVD-RW Noctua NH-D14 Windows 7 
MonitorKeyboardPowerCase
LG 22" 1080p + Acer 18" Das Keyboard - MX Blue Antec TruePower New TP-650 Cooler Master HAF 922 Black 
Mouse
Logitech 
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