Forums
New posts
Articles
Product Reviews
Policies
FAQ
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Menu
Log in
Register
Install the app
Install
Forums
Apple Computing Products:
macOS - Notebook Hardware
Has my RAM Failed its Mem Test?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Trundle" data-source="post: 1376640" data-attributes="member: 240495"><p>Hi All,</p><p></p><p></p><p>Have posted the same topic elsewhere but I haven't really had the answers I had been looking for, so I am hoping here can shed some light on it.</p><p></p><p></p><p>Recently purchased new RAM for Macbook Pro Late 2010 Model (Still running Snow Leopard) , and now has 8GB on two 4GB Slots. </p><p></p><p></p><p>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. </p><p></p><p>It has been mentioned doing the test in single user mode. </p><p></p><p>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? </p><p></p><p></p><p></p><p>Anyone who is able to explain my failure would be great, as I am always looking to further expand my knowledge.</p><p></p><p></p><p>Thanks</p><p></p><p></p><p></p><p></p><p></p><p>Memtest version 4.22 (64-bit)</p><p>Copyright (C) 2004 Charles Cazabon</p><p>Copyright (C) 2004-2008 Tony Scaminaci (Macintosh port)</p><p>Licensed under the GNU General Public License version 2 only</p><p></p><p>Mac OS X 10.6.8 (10K549) running in multiuser mode</p><p>Memory Page Size: 4096</p><p>System has 2 Intel core(s) with SSE</p><p>Requested memory: 5442MB (5706547200 bytes)</p><p>Available memory: 5442MB (5706547200 bytes)</p><p>Allocated memory: 5442MB (5706547200 bytes) at local address 0x0000000101000000</p><p>Attempting memory lock... ERROR: Memory lock failed - reason unknown.</p><p></p><p>WARNING: Testing with unlocked memory may be slower and less reliable</p><p></p><p>Partitioning memory into 2 comparison buffers...</p><p>Buffer A: 2721MB (2853273600 bytes) starts at local address 0x0000000101000000</p><p>Buffer B: 2721MB (2853273600 bytes) starts at local address 0x00000001ab118000</p><p></p><p>Running 2 test sequences... (CTRL-C to quit)</p><p></p><p>Test sequence 1 of 2:</p><p></p><p>Running tests on full 5442MB region...</p><p>Stuck Address : ok </p><p>Linear PRN : ok </p><p>Running comparison tests using 2721MB buffers...</p><p>Random Value : </p><p></p><p>FAILURE! Data mismatch at local BUFA address 0x000000019146eb80, BUFB address 0x000000023b586b80</p><p>BUFA Data: 0x7fab2e5d631ddbfe, BUFB Data: 0x7faf2e5d631ddbfe</p><p></p><p>Compare XOR : </p><p></p><p>FAILURE! Data mismatch at local BUFA address 0x000000019146eb80, BUFB address 0x000000023b586b80</p><p>BUFA Data: 0xae164f1d9463727b, BUFB Data: 0xae124f1d9463727b</p><p></p><p>Compare SUB : </p><p></p><p>FAILURE! Data mismatch at local BUFA address 0x000000019146eb80, BUFB address 0x000000023b586b80</p><p>BUFA Data: 0x30bb2e9eeb63bb2c, BUFB Data: 0x30b72e9eeb63bb2c</p><p></p><p>Compare MUL : </p><p></p><p>FAILURE! Data mismatch at local BUFA address 0x000000019146eb80, BUFB address 0x000000023b586b80</p><p>BUFA Data: 0x25e3dba234e64dc8, BUFB Data: 0x7d8bdba234e64dc8</p><p></p><p>Compare DIV : </p><p></p><p>FAILURE! Data mismatch at local BUFA address 0x000000019146eb80, BUFB address 0x000000023b586b80</p><p>BUFA Data: 0x0000000000000000, BUFB Data: 0x0000000000000001</p><p></p><p>Compare OR : ok </p><p>Compare AND : ok </p><p>Sequential Increment: ok </p><p>Solid Bits : ok </p><p>Block Sequential : ok </p><p>Checkerboard : ok </p><p>Bit Spread : ok </p><p>Bit Flip : ok </p><p>Walking Ones : ok </p><p>Walking Zeroes : ok </p><p></p><p>Test sequence 2 of 2:</p><p></p><p>Running tests on full 5442MB region...</p><p>Stuck Address : ok </p><p>Linear PRN : ok </p><p>Running comparison tests using 2721MB buffers...</p><p>Random Value : ok </p><p>Compare XOR : ok </p><p>Compare SUB : ok </p><p>Compare MUL : ok </p><p>Compare DIV : ok </p><p>Compare OR : ok </p><p>Compare AND : ok </p><p>Sequential Increment: ok </p><p>Solid Bits : ok </p><p>Block Sequential : ok </p><p>Checkerboard : ok </p><p>Bit Spread : ok </p><p>Bit Flip : testing 132 of 512</p><p></p><p>FAILURE! Data mismatch at local BUFA address 0x000000015d145950, BUFB address 0x000000020725d950</p><p>BUFA Data: 0x0000000000210000, BUFB Data: 0x0000000000010000</p><p></p><p>Walking Ones : testing 22 of 128</p><p></p><p>FAILURE! Data mismatch at local BUFA address 0x000000015d145950, BUFB address 0x000000020725d950</p><p>BUFA Data: 0xffffffffffffffff, BUFB Data: 0xffffffffffdfffff</p><p></p><p>Walking Zeroes : testing 1 of 128</p><p></p><p>FAILURE! Data mismatch at local BUFA address 0x000000015d145950, BUFB address 0x000000020725d950</p><p>BUFA Data: 0x0000000000200001, BUFB Data: 0x0000000000000001</p><p></p><p></p><p>*** Memory Test Failed *** Please check transcript for details.</p><p>Execution time: 8020 seconds.</p><p></p><p></p><p></p><p>- An Update - Apple Hardware Tests claim that all units are working correctly. However, I had been informed to take these with a pinch of salt. </p><p></p><p>- Mem Test now showing a pass on the test but I appear to be having some hangups still.</p><p></p><p>- It has been raised that the Mem test above displays only 5442 MB of available memory - Why?</p></blockquote><p></p>
[QUOTE="Trundle, post: 1376640, member: 240495"] Hi All, Have posted the same topic elsewhere but I haven't really had the answers I had been looking for, so I am hoping here can shed some light on it. 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. - An Update - Apple Hardware Tests claim that all units are working correctly. However, I had been informed to take these with a pinch of salt. - Mem Test now showing a pass on the test but I appear to be having some hangups still. - It has been raised that the Mem test above displays only 5442 MB of available memory - Why? [/QUOTE]
Verification
Name this item 🌈
Post reply
Forums
Apple Computing Products:
macOS - Notebook Hardware
Has my RAM Failed its Mem Test?
Top
