Memory Usage Issue - T400

Hello,
I got my T400 in this morning and facing a small issue with the memory usage. I ordered the laptop with Windows Vista Biz. 64bit
The memory usage at the start up is above 1.3GB. Is that normal?
I am using a desktop PC where the memory usage did not hit 900MB (I am using Windows Vista Ult. 64bit).
T400 spec.
42X6336 SBB INT.CORE2DUOPROCP8600
42V8173 VBB MS WIN VISTA BUSSINESS 64
44C1081 SBB G W VISTABSS64 US ENGLISH
43Y3484 SBB MW XP PROFES. US ENG RDVD
42X6321 SBB 14.1 WXGA+ TFT, W/ CAMERA
42X6315 SBB AMD M82XT HYBRID 256MB
42X6306 VBB 2GBPC3-8500 1067MHZ1DIMM
42X6355 SBB KYB US ENGLISH
42X6323 SBB ULTRNAV(TRP+TOUCHP)FINGERP
42X6351 SBB 160GB HDD/7200RPM
42X6326 SBB INT.TURBOMEMORY1.6 2GB
42X6345 SBB DVDRECORD.8XMAXDUAL,ULTBAY
42X6312 SBB EXPR.CARDSLOTXN4-1M.CARDR.
42X6325 SBB INT.WIFI LINK5300
42X6328 SBB INTG.WIR.WIDENET UPGRAD.
42V9338 SBB 6 CELL LI-ION BATERRY
39T6442 SBB COUNTRY PACK NORTH AMERICA
42X6388 SBB LPACK US ENGLISH

Hi, everyone
     I got a new t440p 20ANA00UHH (8GB RAM, win8 64bits) about one week ago. It works really well, but its memory usage  confused me. In Task Manager, the "Performance" option shows memory is 68% (5.4G in use), but "Users" option shows memory usage 66% (1019.5M in use). Is that normal ? I just opened some websites and word files.

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