Question about OC

[Le Québécois]

Can an overclocked CPU ( in this case AMD64 3200+"winchester" ) run prime95 for more than 72 and still be the reason why my system is unstable?

Even at full load it doesn't run hotter than 45C.

 

[Aenslead]

what is the HTT multiplier you are using?
What voltage are you using?
What's your FSB?
What memory are you using and with what divider?

 

[uOpt]

Sure, Prime 95 only tests one specific part of the system.

While I agree that Prime95 is awesome for CPU testing, it is much less so for memory. If you look at the memory footprint you will see it only takes up 50-100 MB. If you have a problem in other parts of the RAM then you are still doomed. Not to mention instability after overclocking can be a result of I/O problems such as harddrive transfer failure due to a lack of a AGP/PCI lock.

Your signature link does not work so I have to guess.

 

[ZL1]

yes, run memtest


D

 

[Le Québécois]

Originally posted by: Aenslead
what is the HTT multiplier you are using?
What voltage are you using?
What's your FSB?
What memory are you using and with what divider?

HTT X4
1.47V (+5% of the normal Voltage)
240
I'm using PC3200 Infineon brand with a divider of 5/6 ( making my ram to runs at 200 )

 

[Furen]

Originally posted by: Le Québécois

Originally posted by: Aenslead
what is the HTT multiplier you are using?
What voltage are you using?
What's your FSB?
What memory are you using and with what divider?

HTT X4
1.47V (+5% of the normal Voltage)
240
I'm using PC3200 Infineon brand with a divider of 5/6 ( making my ram to runs at 200 )

No "cool and quiet", correct? You can always try feeding it more voltage or holding back on the overclock a bit.

 

[Le Québécois]

Originally posted by: MartinCracauer
Sure, Prime 95 only tests one specific part of the system.

While I agree that Prime95 is awesome for CPU testing, it is much less so for memory. If you look at the memory footprint you will see it only takes up 50-100 MB. If you have a problem in other parts of the RAM then you are still doomed. Not to mention instability after overclocking can be a result of I/O problems such as harddrive transfer failure due to a lack of a AGP/PCI lock.

Your signature link does not work so I have to guess.

I know my signature doesn't works...but I can't change it because of some change they made to the forum system some years ago because I have none standart characters in my user name...the é.

Here's my system:

MSI K8N NEO2 Platinium
AMD64 3200+ (winchester)
2x512mb of PC3200 (Infineon Brand)
ATI X800XL (AGP)
WD SE Caviar 80gb (8mb)
SB Audigy 2 Value
PSU ANTEC SL350

My computer has no problem running memtest86.

"I/O problems such as harddrive transfer failure due to a lack of a AGP/PCI lock"

I'm not exactly sur..but I can set the frequency for the AGP..is that what you meen by lock? It's set at 66

 

[Le Québécois]

No cool n quiet for sure..

For the Voltage...Ill set for more..but my main question was about Prime95...you see..it's all related to that post I made on saturday -->

Topic Title: Another person in need for some help...me!

To be honnest I was quite sure that if my CPU ran prime95 for more than 72h it was rock solid stable...

 

[Furen]

Nah, prime, like all other programs, stresses some of your CPU's execution units but not ALL of them. I've heard that other programs are better at it, though. The rule of thumb is that prime/superpi helps you know if your system is horribly unstable, but cannot be considered absolutely fool-proof. So if your systems reboots, it's not fully stable. Just back down on the overclock or increase the votlage.

 

[imported_Vanden]

My winchester fails superpi 32M when i can still run prime95 for days.
It is possible to set the amount of mem used in prime with the custom setting.
Just try some different tests and bechmarks.
Prime is good but not perfect, for me passing superpi32M says more about my stability than 2 days of prime. Every proc is different.

 

[Le Québécois]

So you're saying that if system pass prime95 and is still unstable that it coulb be because of the ram? even if i dont OC it at all?

 

[ZL1]

Originally posted by: Le Québécois
So you're saying that if system pass prime95 and is still unstable that it coulb be because of the ram? even if i dont OC it at all?

its possible, are the timings by spd or custom ? try raising the ram volts to 2.7


D

 

[Avalon]

Originally posted by: Le Québécois
So you're saying that if system pass prime95 and is still unstable that it coulb be because of the ram? even if i dont OC it at all?

It's a definite possibility. Try running a 32M SuperPi with P95 FFT test at the same time, and see what that does for you. You said you memtest just fine though? Have you memtest looped test #5?

 

[AkumaX]

what about p95 on blend? doesn't test mem enough?

 

[ZL1]

Originally posted by: AkumaX
what about p95 on blend? doesn't test mem enough?

memtest is much better for ram testing

D

 

[Duvie]

with an AMD64 with ondie memory controller, YES!!!

Usually most other cpus prime95 will pretty much rule ou the cpu...

You should try running memtest to see if the ram is your issue...Depending on your test prime95 test absoultely no ram to testing all of it but not very well....Most ppl run small or large FFT and then memtest )DOS version) run to check the memory....

The windows version is fine just that it does not check all the ram..only what is avialable which for most 1gb winxp setups is only about 800mb or less...

 

[Le Québécois]

I ran memtest86 from a floppy and it looped all test except #9( it's not part of the standart test..you have to run it manually ) 40 times ( more than 12h ). All my ram timings are set to auto..witch usually means the slowest timing. 2.5-3-3-7 if I remember correctly. Why should I put more voltage on the ram If it doesn't run any different when the CPU is OC or not...since I use the 5/6 when OC..that ram stay exaclty the same.

 

[Duvie]

Hey just list you sig since I hat e to have to sign in to see your rig....

If you run the extended test you will run test 9,10 and I believe an 11...

Needless to say if you are running an A64 test 5,6,and8 are the most critical...

 

[Le Québécois]

Originally posted by: Duvie
Hey just list you sig since I hat e to have to sign in to see your rig....

If you run the extended test you will run test 9,10 and I believe an 11...

Needless to say if you are running an A64 test 5,6,and8 are the most critical...

The last version of memtest goes up to 9. There's no more option for extended test..you have standart( all run from 0-8)-select test (0-9) and sleep or something like that (witch is the number 9 test.)

Sowhen I say it looped for more than 12h..this include 5-6-7

As for my system...did you read the whole topic???? Because my ststem ( and even the reason why my system link doesnt work ) has been posted...but to save you some time..here it is again...


Here's my system:

MSI K8N NEO2 Platinium
AMD64 3200+ (winchester)
2x512mb of PC3200 (Infineon Brand)
ATI X800XL (AGP)
WD SE Caviar 80gb (8mb)
SB Audigy 2 Value
PSU ANTEC SL350

 

[lxskllr]

I've never had much luck with synthetic system stressers. I can fly through them, then error out in a game. I usually make a couple of passes in Aquamark, for a quick test, then if I don't crash in that I'll play UT2k4. If I can play UT2k4 for about 12hrs(not at 1 sitting ), I consider my overclock stable.

 

[Le Québécois]

Well...my main problem seems to be random crash....not cpu intensive thing..can happen when I'm just booting the computer...or watching a movie...even when the computer POST.

 

[ZL1]

Hmmmm.... this is a hard one
ok lets back up a bit, what kind of crashes ? pc freezes/restarts/shuts down/blue screens ?

also did you check your voltages ? the psu rails, if you havent go to www.lavalys.com and download everest, that prog will tell you what the volts are for each rail
check them at idle and at load, it may just be the psu, its a good psu but who knows the load may be too big after all

you mentioned you had agp set to 66mhz, how about pci ? it should be 33, the ide controller sits on the pci so it will be affected if its raised
how to check if you cant find it in bios go to http://www.cpuid.org/clockgen.php and see if there is one for you mobo, it will read all fsbs

D

 

[Le Québécois]

Originally posted by: ZL1
Hmmmm.... this is a hard one
ok lets back up a bit, what kind of crashes ? pc freezes/restarts/shuts down/blue screens ?

also did you check your voltages ? the psu rails, if you havent go to www.lavalys.com and download everest, that prog will tell you what the volts are for each rail
check them at idle and at load, it may just be the psu, its a good psu but who knows the load may be too big after all

you mentioned you had agp set to 66mhz, how about pci ? it should be 33, the ide controller sits on the pci so it will be affected if its raised
how to check if you cant find it in bios go to http://www.cpuid.org/clockgen.php and see if there is one for you mobo, it will read all fsbs

D

Here's a LINK

on the same topic I posted in the technical support section concerning my crash..it explain my problem in all its glory.

Nice little program from CPUID...Ill give it a try next time I ll do some OC test ( probably tomorrow ). Ill do the same with the Voltage check program...ill come back with the result.

 

[ZL1]

Originally posted by: Le Québécois

Originally posted by: ZL1
Hmmmm.... this is a hard one
ok lets back up a bit, what kind of crashes ? pc freezes/restarts/shuts down/blue screens ?

also did you check your voltages ? the psu rails, if you havent go to www.lavalys.com and download everest, that prog will tell you what the volts are for each rail
check them at idle and at load, it may just be the psu, its a good psu but who knows the load may be too big after all

you mentioned you had agp set to 66mhz, how about pci ? it should be 33, the ide controller sits on the pci so it will be affected if its raised
how to check if you cant find it in bios go to http://www.cpuid.org/clockgen.php and see if there is one for you mobo, it will read all fsbs

D

Here's a LINK

on the same topic I posted in the technical support section concerning my crash..it explain my problem in all its glory.

Nice little program from CPUID...Ill give it a try next time I ll do some OC test ( probably tomorrow ). Ill do the same with the Voltage check program...ill come back with the result.

that lil screenie told me half the story, its vcard related 90% sure on this
its either power or temps (your psu is a good one, but these high end vcards usually want more watts)
check the volts as I suggested and also check the temps (now I dont know ati cards that well so I cant say if everest will show you the vcard temps and whats high for them so post in the v-section and ask about your particular v-card and how high is too high and how to check)


D

 

[ZL1]

small quote from the other thread

"Oh and BTW..if it where in fact the video card...why did the crash stop now? And also..when OC my CPU my AGP speed has always been at 66...never changed it..and never OC it ( videocard )."

less heat inside the case and less power draw on the psu


D