Has my RAM Failed its MEM Test

[Trundle000]

Hi All,


Recently purchased new RAM for Macbook Pro Late 2010 Model (Still running Snow Leopard) , and now has 8GB on two 4GB Slots.


I was prompted to do a memory test to ensure they worked correctly, and the results are below. Test was not carried out in Single User mode and was done with no other apps running in terminal.

It has been mentioned doing the test in single user mode.

This is where the limit of my computer knowledge ends, so whilst I can see in black and white its stating there is a failure - should I be looking for a refund?



Anyone who is able to explain my failure would be great, as I am always looking to further expand my knowledge.


Thanks

Memtest version 4.22 (64-bit)
Copyright (C) 2004 Charles Cazabon
Copyright (C) 2004-2008 Tony Scaminaci (Macintosh port)
Licensed under the GNU General Public License version 2 only

Mac OS X 10.6.8 (10K549) running in multiuser mode
Memory Page Size: 4096
System has 2 Intel core(s) with SSE
Requested memory: 5442MB (5706547200 bytes)
Available memory: 5442MB (5706547200 bytes)
Allocated memory: 5442MB (5706547200 bytes) at local address 0x0000000101000000
Attempting memory lock... ERROR: Memory lock failed - reason unknown.

WARNING: Testing with unlocked memory may be slower and less reliable

Partitioning memory into 2 comparison buffers...
Buffer A: 2721MB (2853273600 bytes) starts at local address 0x0000000101000000
Buffer B: 2721MB (2853273600 bytes) starts at local address 0x00000001ab118000

Running 2 test sequences... (CTRL-C to quit)

Test sequence 1 of 2:

Running tests on full 5442MB region...
Stuck Address : ok
Linear PRN : ok
Running comparison tests using 2721MB buffers...
Random Value :

FAILURE! Data mismatch at local BUFA address 0x000000019146eb80, BUFB address 0x000000023b586b80
BUFA Data: 0x7fab2e5d631ddbfe, BUFB Data: 0x7faf2e5d631ddbfe

Compare XOR :

FAILURE! Data mismatch at local BUFA address 0x000000019146eb80, BUFB address 0x000000023b586b80
BUFA Data: 0xae164f1d9463727b, BUFB Data: 0xae124f1d9463727b

Compare SUB :

FAILURE! Data mismatch at local BUFA address 0x000000019146eb80, BUFB address 0x000000023b586b80
BUFA Data: 0x30bb2e9eeb63bb2c, BUFB Data: 0x30b72e9eeb63bb2c

Compare MUL :

FAILURE! Data mismatch at local BUFA address 0x000000019146eb80, BUFB address 0x000000023b586b80
BUFA Data: 0x25e3dba234e64dc8, BUFB Data: 0x7d8bdba234e64dc8

Compare DIV :

FAILURE! Data mismatch at local BUFA address 0x000000019146eb80, BUFB address 0x000000023b586b80
BUFA Data: 0x0000000000000000, BUFB Data: 0x0000000000000001

Compare OR : ok
Compare AND : ok
Sequential Increment: ok
Solid Bits : ok
Block Sequential : ok
Checkerboard : ok
Bit Spread : ok
Bit Flip : ok
Walking Ones : ok
Walking Zeroes : ok

Test sequence 2 of 2:

Running tests on full 5442MB region...
Stuck Address : ok
Linear PRN : ok
Running comparison tests using 2721MB buffers...
Random Value : ok
Compare XOR : ok
Compare SUB : ok
Compare MUL : ok
Compare DIV : ok
Compare OR : ok
Compare AND : ok
Sequential Increment: ok
Solid Bits : ok
Block Sequential : ok
Checkerboard : ok
Bit Spread : ok
Bit Flip : testing 132 of 512

FAILURE! Data mismatch at local BUFA address 0x000000015d145950, BUFB address 0x000000020725d950
BUFA Data: 0x0000000000210000, BUFB Data: 0x0000000000010000

Walking Ones : testing 22 of 128

FAILURE! Data mismatch at local BUFA address 0x000000015d145950, BUFB address 0x000000020725d950
BUFA Data: 0xffffffffffffffff, BUFB Data: 0xffffffffffdfffff

Walking Zeroes : testing 1 of 128

FAILURE! Data mismatch at local BUFA address 0x000000015d145950, BUFB address 0x000000020725d950
BUFA Data: 0x0000000000200001, BUFB Data: 0x0000000000000001


*** Memory Test Failed *** Please check transcript for details.
Execution time: 8020 seconds.

 

[redache]

Try reseating the RAM before running the test again. If that fails put the old RAM in again and check that it passes too (it could be something wrong with the memory test) if these check out I'd contact the supplier and get them to RMA the RAM (send it back, send you a replacement etc.).