The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    P7370 vs P8400 (yes, i searched)

    Discussion in 'Lenovo' started by weststar, Jan 31, 2009.

  1. weststar

    weststar Notebook Enthusiast

    Reputations:
    0
    Messages:
    26
    Likes Received:
    0
    Trophy Points:
    5
    other than the slight clock speed difference, these processors seem very much alike. is there any real performance difference when it comes to tasks such as Serato and lots of mp3 encoding? Battery life?

    Thanks in advance.
     
    weststar, Jan 31, 2009
    #1
  2. Tippey764

    Tippey764 Notebook Deity

    Reputations:
    377
    Messages:
    1,423
    Likes Received:
    0
    Trophy Points:
    55
    You can think of a p7370 as a p8200 or somthing like that. They are the same exept clock speed based off of the same core.
     
    Tippey764, Jan 31, 2009
    #2
  3. yun

    yun Notebook Deity

    Reputations:
    34
    Messages:
    735
    Likes Received:
    4
    Trophy Points:
    31
    I remember they have different L2 ?
     
    yun, Jan 31, 2009
    #3
  4. QualitySeeker

    QualitySeeker Notebook Consultant

    Reputations:
    39
    Messages:
    221
    Likes Received:
    0
    Trophy Points:
    30
    No. 3MB both.
     
    QualitySeeker, Jan 31, 2009
    #4
  5. mrjohn

    mrjohn Notebook Consultant

    Reputations:
    0
    Messages:
    120
    Likes Received:
    0
    Trophy Points:
    30
    The only real difference I could spot is that the P7370 is an OEM only part.
     
    mrjohn, Jan 31, 2009
    #5
  6. jonlumpkin

    jonlumpkin NBR Transmogrifier

    Reputations:
    826
    Messages:
    3,240
    Likes Received:
    0
    Trophy Points:
    105
    I generally take my information from this list of Intel Core 2 microprocessors. However, the P7370 is not listed (maybe because it is an OEM only part).

    Some further searching reveals that the P7370 is a 2GHz C2D with a 1066MHZ FSB, 3MB L2 cache, and a 25W TDP. This is very similar to the P8400 except for the 13% lower clockspeed.

    One possible (unconfirmed) difference would be support for a few of Intel's advanced technologies e.g. Intel VT (ability to run virtual machines without any performance penalty). These features often don't show up on the chips used in consumer oriented notebooks (e.g. IdeaPads), and may be missing in the P7370.

    Edit - Based on this link, it appears that the P7370 doesn't support the following:
    • Enhanced Intel Speedstep® Technology
    • Intel® Trusted Execution Technology (TxT)
    • Intel® Stable Image Platform Program (Intel® SIPP)

    I believe Enhanced Speedstep technology allows adjusting the clock speed on each core independently. This can improve performance and reduce power usage on single threaded applications (e.g. MP3 encoding).
    Trusted execution technology ties into the TPM.
    The Stable Image Platform Program appears to be an IT management tool.

    If you are doing lots of MP3 encoding, I would consider getting the P8400 or P8600 instead (what's the price difference?). The P8400 should be ≈13% faster encoding of MP3s and/or video. Battery life should be comparable between both, although the P8400 could be very slighly better (completes tasks faster and spends less time at a high activity state).
     
    jonlumpkin, Jan 31, 2009
    #6
  7. Pnanasnoic

    Pnanasnoic Notebook Enthusiast

    Reputations:
    0
    Messages:
    37
    Likes Received:
    0
    Trophy Points:
    15
    Pnanasnoic, Jan 31, 2009
    #7
  8. ernstloeffel

    ernstloeffel Notebook Consultant

    Reputations:
    15
    Messages:
    235
    Likes Received:
    0
    Trophy Points:
    30
    if it doesn''t have speedstep battery life will probably be mediocre
     
    ernstloeffel, Jan 31, 2009
    #8
  9. jonlumpkin

    jonlumpkin NBR Transmogrifier

    Reputations:
    826
    Messages:
    3,240
    Likes Received:
    0
    Trophy Points:
    105
    It has speedstep, it just doesn't have the most advanced version of it. The P8400 can adjust each core individually, and I believe it can also dynamically overclock one core by ≈10% if you are running a single threaded application.

    Battery life should be comparable when idle or running a multi-threaded application. The difference in performance and/or battery life would be in single-threaded applications (e.g. LAME MP3 encoding).
     
    jonlumpkin, Jan 31, 2009
    #9