Q. How long does it take RAMCHECK LX
DDR2/DDR1 to test a memory module?
A. It depends on the size
and structure of the module, and which tests are performed.
proprietary test program is divided into sub tests: BASIC test, EXTENSIVE test,
and AUTO-LOOP test. The BASIC Test is the first test performed by RAMCHECK,
optimized to be performed in the least amount of time.
table illustrates some sample test times with JEDEC-standard modules. Please
note that timing may change, depending upon improvement and changes to test
|| BASIC Test Time
|16Mx64 (128MB SDRAM)
min 08 sec
|32Mx72 (256MB SDRAM)
min 51 sec
|32Mx64 (256MB DDR)
|64Mx72 (512 MB DDR)
min 11 sec
|128Mx72 (1GB DDR)
min 16 sec
|256Mx72 (2GB DDR)
min 31 sec
|32Mx72 (256MB DDR2)
min 57 sec
|64Mx72 (512 MB DDR2)
min 11 sec
|128Mx64 (1GB DDR2)
min 38 sec
|256Mx72 (2GB DDR2)
min 06 sec
|512Mx72 (4GB DDR2)
min 31 sec
min 07 sec
min 17 sec
min 12 sec
The BASIC test
is sufficient for most of your regular screening and verification tests, since
each memory cell is tested several times. The BASIC test also provides complete
structure and speed information and it manages to complete all the device
wiring checks. However, the BASIC test may not detect intermittent and/or
pattern sensitivity problems due to its short execution time.
EXTENSIVE test may take several minutes as it performs quite a few test phases.
You can easily customize the RAMCHECK test program to skip any EXTENSIVE test
phase in accordance with your preference. The RAMCHECK LX manual includes details on what is
accomplished at each test phase so that you can decide which test phases may be
skipped in your customized test. Of course, skipping a test will shorten the
overall test time.
The AUTO-LOOP is our burn-in test, and therefore
will run until you abort it.
If you have additional questions, please
email us at firstname.lastname@example.org.
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