Hi All
I have a new i5 machine here that was delivered with no OS installed.
Prior to installing the OS I booted the machine from a Mint Linux 17.2 x64 DVD and ran memtest86+ v4.20. Saw multiple errors almost immediately. The errors start at 0x0ccb15000 about 3275MB into the single 8GB DDR3 DIMM.
I burnt the latest memtest86+ v5.01 to a CD and ran that. Although the addresses and number of errors were slightly different the result was the broadly the same.
I also noticed that in memtest86+ v4.20 that no errors were detected if I used the restart option from the configuration menu i.e. without rebooting the machine.
None of this made any sense so I looked for another tool and found memtest86 v6.10. I downloaded the free version and put it on a USB stick.
I have now run it three times; once with a single core active, and twice with all 4 cores. No errors.
So I looked for differences between memtest86 and memtest86+. A major difference is that memtest86 supports UEFI whereas memtest86+ does not.
The motherboard is a Gigabyte GA-H81M-S2V which has a UEFI BIOS. The RAM is a single 8GB stick of Crucial PC3-12800 non ECC unbuffered.
When I booted memtest86+ from the CD it was using SATA i.e. no UEFI prefix in the boot options table.
When I booted memtest86 from the USB stick it was using UEFI i.e. the name of the drive was prefixed with UEFI.
I am inclined to believe the memtest86 results, but I do not understand enough about UEFI to figure out what's going on here.
Are the memtest86+ results invalid because the motherboard uses UEFI, even though I booted the CD in SATA mode?
Logic says there cannot be a problem with the memory because the memtest86 results are all good.
Are there any other tests I need to carry out?
Should I keep the box or RMA it back to the supplier?
Any suggestions gratefully received.
Nick
memtest86+ and memtest86 discrepancies
I have a new i5 machine here that was delivered with no OS installed.
Prior to installing the OS I booted the machine from a Mint Linux 17.2 x64 DVD and ran memtest86+ v4.20. Saw multiple errors almost immediately. The errors start at 0x0ccb15000 about 3275MB into the single 8GB DDR3 DIMM.
I burnt the latest memtest86+ v5.01 to a CD and ran that. Although the addresses and number of errors were slightly different the result was the broadly the same.
I also noticed that in memtest86+ v4.20 that no errors were detected if I used the restart option from the configuration menu i.e. without rebooting the machine.
None of this made any sense so I looked for another tool and found memtest86 v6.10. I downloaded the free version and put it on a USB stick.
I have now run it three times; once with a single core active, and twice with all 4 cores. No errors.
So I looked for differences between memtest86 and memtest86+. A major difference is that memtest86 supports UEFI whereas memtest86+ does not.
The motherboard is a Gigabyte GA-H81M-S2V which has a UEFI BIOS. The RAM is a single 8GB stick of Crucial PC3-12800 non ECC unbuffered.
When I booted memtest86+ from the CD it was using SATA i.e. no UEFI prefix in the boot options table.
When I booted memtest86 from the USB stick it was using UEFI i.e. the name of the drive was prefixed with UEFI.
I am inclined to believe the memtest86 results, but I do not understand enough about UEFI to figure out what's going on here.
Are the memtest86+ results invalid because the motherboard uses UEFI, even though I booted the CD in SATA mode?
Logic says there cannot be a problem with the memory because the memtest86 results are all good.
Are there any other tests I need to carry out?
Should I keep the box or RMA it back to the supplier?
Any suggestions gratefully received.
Nick
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