I think I have bad RAM.

imported_MrBones

Junior Member
Nov 7, 2005
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Allright I'll provide as much detail as I can. First off my computer specs:
Crucial Ballistix 512MB 184-PIN DIMM 64Mx64 DDR PC3200 CL2
ABIT IS7 Motherboard
Intel Pentium 4 3.2 Northwood 800MHz FSB Socket 478
Antec TruePower 480W Power Supply
BFG GeForce 6800 GT 256MB Vid Card
Creative Sound Blaster Audigy 2 NX
LITE-ON DVD-ROM
Nec ND2100A DVD Burner
Windows XP Pro


Over the summer (Jul) I added an additional gig of ram to my already existing gig (exact same kind). So I have 4 DIMMS of 512MB on my mobo. Recently I have been having some crashing issues when working in Visual Studio. If I try and build, compile, or even save files, the computer will restart.

I thought it might be some issues with visual studio. I uninstalled all addition plugins I had for it in hopes that maybe one of those was the problem. Didn't fix anything, so I completely uninstalled and reinstalled it. Still get the reboots.

The only thing new I added to my computer in the last 6 months were a joystick and more ram. So I unplugged the joystick. Still got the restarts. I downloaded a memory tester and ran it for 2 days straight in windows and it said I had some memory errors.

I contacted Crucial because they are the maker of the ram. I didn't fully trust some freeware memory tester off the internet so I explained my problem and asked what the pros use in order to test my ram. In the response I got 3 different pieces of software I could use to test. I decided to go with the microsoft testing utility ( found here: http://oca.microsoft.com/en/windiag.asp ) since the others required a floppy to install to and this one could be writted to floppy or cd (I don't have a floppy drive).

Anyways, I've run an abundance of tests (all in the extensive test mode):
- I first ran the test with all 4 DIMMs in the computer, after running 5 passes on the extensive checks it came up with errors. So to decide which DIMM has the errors I began the individual tests.

- The first two DIMMs came up error free. I ran 26 passes on the first module and 8 on the other. I decided to put both in their respective slots so that they were running in Dual Channel mode and run the test. Immediately on the first pass, I get about 3 errors. Confused, I check my BIOS. The timing on the website for my ram says that it is 2-2-2-6. My BIOS was selected to figure out the timings automatically by using the by SPD option and had the timings set to 2-2-2-8. So I manually changed the timings so that they were 2-2-2-6. I saved my settings, restarted, and began the tests again on both DIMMs running in Dual Channel mode. No more errors after 6 passes. So I thought that was the problem. I popped in my other two untested DIMMs, ran the test and immediately got errors. Ok so it must be in the other two untested modules I have.

- I pop in the third module and being scanning (the timing is still set to 2-2-2-6). After going to class and comming back I check and after 11 passes no errors have come up. Ok, so maybe it's the fourth module that has problems.

- So as I'm typing this, the fourth module is currently being tested (I'm on another comp) and it's on pass 2 with no errors found. I'll let it go for awhile just to be sure.

Now I'm not really sure what to do. I checked the voltage being supplied to the RAM and it's supplying 2.6V. The Crucial site says the memory voltage is 2.8V. I thought about it, and while the four DIMMs were in there after I changed the timing to 2-2-2-6 I set the voltage to 2.8V and ran the tests. BAM, 11 errors and the first pass wasn't even completed.

Any ideas? Am I missing something in the BIOS settings or anything? Thanks.
 

imported_MrBones

Junior Member
Nov 7, 2005
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Ok, I have a little update. And I'm confused. I finished letting the fourth DIMM check, and after 7 passes with no errors I was satisfied. Something in my BIOS is wrong...

So I plop in my other 3 DIMMs, and have all 4 in there.

Run the test, and immediately an error shows up. So I cancel the test, leave my timings at 2-2-2-6, and increase the voltage from 2.6V to 2.65V. Save my settings and restart the test. No errors have show up yet...


Any explanation? Were they just not getting enough power? What is the exact voltage I should be using for my memory? Any help would be greatly appreciated.
 

eno

Senior member
Jan 29, 2002
864
1
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Abit IS7
P4 3ghz HT
4x 512mb PC4000 Kingston HyperX
BFG 6800GT OC
Audigy 2 ZS Plat
Excellent CPU/CHipset cooling with good low case temps
Nec ND2100A DVDRW
Antec NEO Power 480w

We basically have the same freakin system!




Holy Cow MrBones!! I was about ready to post almost the exact same issue. :) Sorry to hear about your luck.

I have put my old IS7 into a Media Center case and put all four Kingston HyperX PC4000 sticks in it. This works great about 99% of the time under all programs except for when I would try to load Doom3 in High or Ultra High quality mode. As soon as I would start a load for a saved game I either get a very brief error code style screen for like a fraction of a second or the screen just goes blank with loud sound distortion.

I used to think it was a heat issue so I tested the problem with the case cover removed with great temps. I even raised my Memory Voltage to 2.8v,CPU to 1.6v just to make sure they had enough power. I am not overclocked since its in a quieter / hotter Media style case.

Right now my system is running a Memtest86 boot "CD". You can use nero to burn a iso file onto a bootable Memtest86 CD just so you know. So far 2 test passes have gone by with NO errors.

I have thought maybe its drivers,the game,video card overheating (6800GT OC). I have replaced the 6800GT with a retail boxed replacement with no improvements, and added a 40cfm PCI slot fan that works wonders on case temps as well even though temps aren't the issue.

I have 2x 1gb Corsair sticks in my game system that I am going to swap into the IS7 system for testing purposes. I really hope this is a memory issue and my Corsair will take care of the problem.

I will get back with you with what I find.

-eno
 

eno

Senior member
Jan 29, 2002
864
1
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Originally posted by: MrBones
What is the exact voltage I should be using for my memory? Any help would be greatly appreciated.


From my experience running 2.8v on 2.6v spec memory doesn't do much. Sure overvolting it will allow for more reliablity to a certain extent but also decrease overall life. I bet 2.8 would be just fine for it, but didn't you state 2.8v gave you errors during tests? Well I am going to swap the memory now, hope all boots up after I am done. :) Media PC case is a pain to get to the memory.
 

imported_MrBones

Junior Member
Nov 7, 2005
10
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Well the memory can handle 2.8V. Mine was set to 2.6V. I did try once, with one stick in, putting the settings at 2.8V and got a significant amount of errors. But when I raised it by a little, to 2.65V, the test returned no errors after about 4 passes on the extensive tests. So I'm not sure =). Guess I'll just have to sit down and program a bit and see if my computer restarts itself.
 

eno

Senior member
Jan 29, 2002
864
1
81
Ok. Just swapped the memory. Put the 2x 1024mb PC3200 Corsair Platinum in the IS7. Left memory settings to auto,2.8v. Placed the sticks in Bank 1 and 3. Boot up, loaded Doom3 , loaded the same saved game that has been locking up the system with the 4x 512mb sticks. Bam ! Same thing happened.Split error code screen then to Blank screen and then manual power off. So I took out the easiest access stick in Bank 1. Powered up with only 1gb stick in Bank 3, reloaded the same saved game and presto, its up and running right now ready to game. The game has been loaded for about 15mins now with just the player standing within a level and no lock ups yet. I am going to do some gaming to "test" the reliablity.

Next thing I will try if this seems to work fine, is moving the sticks to banks 2/4 and then try the game. If that works great, if not I will try banks 1/2 then 3/4 and not run dual channel. It might have something to do with dual channel. I will post some more findings later.
 

imported_MrBones

Junior Member
Nov 7, 2005
10
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Just curious, why are you using PC4000 ram? Doesn't the IS7 only support up to 3200? That might give you some problems...
 

eno

Senior member
Jan 29, 2002
864
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I have had it for about 2years now. I originally bought it so I could run 1:1 CPU/FSB overclock without having to use a memory divider. Turns out the 3ghz chip wasn't the best pair for the PC4000. Using a 2.4ghz or 2.6ghz chip would of been a better fit to allow some high FSB overclocks at 1:1. With it in a stock system it just runs at PC3200 no problem. So far I have been gaming with no issues with the single stick of Corsair. I will try other configs soon. If I can't figure this out here , I am going to head over to the Abit forums for this board. Keep posting what you find.

PS: That PC4000 is also now running in this system I am typing on, only running at PC3200 with my AMD64. It works fine at 3200 , but allows for bus overclocking without having to worry about the memory holding you back.
 

deathwalker

Golden Member
May 22, 2003
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You memory timing setting are probably way to aggresive for running 4 simms. I'd try running something like 3-3-3-8 T2.
 

Blake

Member
Nov 7, 2004
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Your computer uses the paging file no matter how much RAM you have. Windows by design will dump stuff from memory to the paging file that it thinks it doesn't need.

I would try increasing the size of the paging file. I increased mine by a few hundred and Doom3 crashed nomore.
 

imported_MrBones

Junior Member
Nov 7, 2005
10
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So I you're thinking I have my RAM set to too high? I guess my question would be, if the ram supports it, why should I have to tone it down?
 

imported_MrBones

Junior Member
Nov 7, 2005
10
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Originally posted by: deathwalker
You memory timing setting are probably way to aggresive for running 4 simms. I'd try running something like 3-3-3-8 T2.


you were talking to me right? Not eno?