Tag Archives: memory

SD cards FAT16, FAT32 & exFAT

SanDisk SD cards come prefomatted as FAT16, FAT32 & exFAT according to size

  • 2GB FAT16
  • 4GB to 32GB FAT32
  • 64GB or higher exFAT


If you have a SanDisk Wireless Flash Drive or SanDisk Wireless Stick

  • 16GB & 32GB SD cards must be formatted as FAT32
  • 64GB and higher capacity drives are compatible and can be formatted as exFAT


If you are still having problems try reformatting them with EaseUs Partition Manager

or windows disk manager

if none of the above work you can get a replacement SanDisk Wireless Flash Drive or  SanDisk Wireless Stick from SanDisk


bizarro @HP and @Lenovo Intel i5 notebook 4GB DDR3L SODIMM memory problem

bizarro @HP and @Lenovo Intel i5 notebook 4GB DDR3L SODIMM memory problem

got some wierd crucial memory that crashes a HP EliteBook and a Lenovo ThinkPad notebooks

crashes on boot ! and fails memory test ! with the msg “Pa_sed” which i assume means FAILED ! bizarely works fine when “mixed” with a 2GB non crucial ram in a Thinkpad X220 and X410

so the mystery is what is the difference between crucial part no 171994 and no 313550 ?

every other param is IDENTICAL

  • 4GB DDE3L-1600 SODIMM 1.35V CL11 (171994  – B.M16FKD)
  • 4GB DDE3L-1600 SODIMM 1.35V CL11 (313550 – BJ.M8FP)




DDR2 and DDR3 memory is now available in 3 types (@amd, @intel and dualmode)

DDR2 and DDR3 memory for desktops and notebooks is now available in 3 types (@amd, @intel and dualmode)

  • Intel DDR2/3 are 10bit with 8K blocks (DO NOT WORK WITH AMD HW)
  • AMD DDR2/3 are 11bit with 16K blocks (DO NOT WORK WITH INTEL HW)
  • Dual Mode should work with both AMD HW and Intel HW


hp & lenovo and #amd & #intel #memory bus nightmares


lost a few hours yesterday to some hp & lenovo and amd & intel memory bus nightmares started when i tried swapping DDR3 / PC3 / PC3L ram between an HP and two LENOVO notebooks

  • HP 255 G2 with AMD A4 memory bus FIXED at 1600Mhz
  • Lenovo T410 with Core i5 memory bus ONLY works at 1333Mhz
  • Lenovo Z50 with AMD FX7500 memory bus FIXED at 800Mhz

Basically the T41o refused to work with any of the other memory whereas i thought DDR3 ram was downwards compatible.

Actually just looking at my photos maybe PC3L is not downwards compatible with PC3 ?

modern notebook gotchas

modern notebook gotchas

  • UEFI
  • no recovery disks
  • 16GB USB stick or 24G external disk required to make a system backup
  • last hp i bought had no accessible hd or memory
  • last lenovo i bought only had only 1 memory socket soldered in despite space for 2
  • lots of preinstalled trialware (hp,lenovo,toshiba all guilty)


now is not a good time to buy a #DDR2 #notebook

now is not a good time to buy a #DDR2 #notebook if you want to put 8G of RAM in it

so just add £100 to your DDR2 notebook budget and buy a DDR3 notebook instead


before spending a lot of money to upgrade your notebooks ram check the price difference between DDR2 and DDR3 since if you need a lot of ram it might be cheaper to replace your DDR2 notebook with a new DDR3 notebook !

for example on 13 may 13 the prices were

ie DDR2 is TWICE as expensive as DDR3

Secure Digital SD memory cards speeds

Are you confused about secure digital SD memory cards speeds ? As far as I can tell

Type : Speed : X

I = 6MB = 40X
II = 12MB = 80X
III = 20MB = 133X
IV = 40MB = 266X

You can buy SD cards from ByteStor, Crucial, Kingston, Lexar but make sure you check the speed first if you need a particular speed such as 10MB (as my digital camera does) !

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