Prime95 rounding errors, not overclocking!

[MADhix]

Well, what should I do? Run CAS 3.5? By the way, it passes everything stock with RAM at 83% of FSB. I am running another test now with one DIMM moved to another location (still in dual channel).

 

[MADhix]

Also, I have another question which indirectly concerns CPU stability. I recently bought a new Antec TrueControl 550 PSU. I can not get the +12, +5 and +3.3 rails to stay at spec. Should I run them just below spec where they will never go above or just above spec where they will never go below? All of this stays within a 1.6% variation to my knowledge.

 

[SickBeast]

Well, these guys have said to run single channel so that is what I would do. You will only lose 3% at most that way, and you will be stable. It's worth a shot.

 

[MADhix]

I moved one of my RAM sticks to another DIMM and it has been running for almost 25 hours now. I think it was that one memory bus.

 

[AWhackWhiteBoy]

Originally posted by: MADhix
I moved one of my RAM sticks to another DIMM and it has been running for almost 25 hours now. I think it was that one memory bus.

no,its running in single channel mode now 🙂

 

[ectx]

Originally posted by: MADhix
I moved one of my RAM sticks to another DIMM and it has been running for almost 25 hours now. I think it was that one memory bus.

Depending on which slots you have the rams in. If you have the two sticks in the two slots that are close togher, then you are running in single channel mode -- which most likely means that your ram or mb cannot run double channel mode reliabily. However, if you still have a stick in slot 3 (the outlier), then it is still in double channel mode -- which means that one of the slots is bad.

 

[MADhix]

It is running in dual channel mode. One of the memory buses is not entirely up to spec. Thanks for all the help everyone! Time to get back to living on a reliable computer... Ahhh.

 

[MADhix]

I changed my avatar respectively.

 

[whoeveryouare]

Originally posted by: edmundoab
test memtest86 first and see if there is any errors with the memory.

then only try to figure out whats wrong with Prim95,
as prime involves other components as well.

Memtest86 involves much more than just memory, too. Just read the documentation included with memtest86 if you don't believe me:

From the memtest86 home page...

Please be aware that not all errors reported by Memtest86 are due to bad memory. The test implicitly tests the CPU, L1 and L2 caches as well as the motherboard.

If Prime95 is reporting an error, then something is wrong. He needs to figure out what that is. Whether or not memtest86--or any other utility--reports an error is totally irrelevant. If memtest86 reports no error, then memtest86 missed a problem that is known to exist. If memtest86 does report an error, then we already knew that, so who cares?

 

[sumrtym]

Make sure you have the newest Prime 95 version. Older ones genererated rounding errors with 1 GB or more of RAM.