Questions for the W541! Possible purchase

Hi everyone I am considering the purchase of a new laptop computer and I'm considering W541 as one of my options. I have a few questions though, before I can do a longish and I'll be very grateful if anyone with or without experience with W541 can respond! BTW I use the laptop mainly under linux + windows for light work of games/office.

(1) SCREEN. Is the FHD REAL matte screen or is bright somehow? I suffer from eye strain/headaches of the retina or glossy or very bright white color poster. I don't consider any laptop with this kind of screen. Also the FHD seems to be the smallest resolution I can get, you think it of big enough for a person with the glass of the prescription see? (otherwise T440p seems the thinkpad only left with HD resolution).

(2) CPU/RAM: there are two "low end" option for CPU: i7-4710 MQ and MQ i7-4810. I know they are pretty similar and I have additional need 500 mhz. However, a Web site, the 4810 seems to support DDR3L 1333/1600 so that 4710 supports only DDR3. I don't know if it's right because Lenovo offers 4710 with 1600 MHz ram. Also do you think 2.5 GHz base frequency difference of 2.8 GHz? How about consumption?

(3) battery life: I'm going to battery 9 if I buy this one. Does anyone have a real experience for how long it might last with internet/office/pdf work?

(4) replacement of RAM: is it replacement ram there at 1600 mhz for replacement? I can only find 14900 mhz crucial. Oh I found 1600 Kingston and kingston 1866? Can I even use 1866 for W541?

(5) sensor of fingerprint digital/color: pretty cool to have feature. But those good support in Linux, or even in windows? My friend has an old T500 with option of fingerprints, and is hell slow to read/use this function.

(6) microdrive/raid: having a raid will be beneficial? With ssd?

(7) keyboard pad num: anyone looking like / dislike it? The num key did all the keys closer and more difficult to type?

(8) final thought: pretty stupid, but don't I have to wait for the quad core broadwell or even skylate? It's 'almost' seven.

I recently "upgraded" to a W520 in a W541, so I can probably help with some of them.

(1) SCREEN. Is the FHD REAL matte screen or is bright somehow?

Speaking only in the version 3K, it is dull. I think the FHD screen is similar.

(2) CPU/RAM: there are two "low end" option for CPU: i7-4710 MQ and MQ i7-4810. I know they are pretty similar and I have additional need 500 mhz. However, a Web site, the 4810 seems to support DDR3L 1333/1600 so that 4710 supports only DDR3. I don't know if it's right because Lenovo offers 4710 with 1600 MHz ram. Also do you think 2.5 GHz base frequency difference of 2.8 GHz? How about consumption?

I wouldn't put too much trust the specifications of Lenovo, which is really disappointing... If you look, the W541 is listed as a 5th generation of processor (is not, and I sent a message about this months ago) and they claim that you can buy it with a touchscreen multipoint (you can't).

Plan on DDR3L / 1600.

(3) battery life: I'm going to battery 9 if I buy this one. Does anyone have a real experience for how long it might last with internet/office/pdf work?

About 6 hours, give or take, if you have the display near the midpoint of the brightness.

(4) replacement of RAM: is it replacement ram there at 1600 mhz for replacement? I can only find 14900 mhz crucial. Oh I found 1600 Kingston and kingston 1866? Can I even use 1866 for W541?

According to my experience, the W541 was very picky with RAM. I went with 2 x 2 x 8 sets of Crucial (P/n: BLS2K8G3N169ES4). Lenovo doesn't really allow to much enjoy anything be it faster.

(5) sensor of fingerprint digital/color: pretty cool to have feature. But those good support in Linux, or even in windows? My friend has an old T500 with option of fingerprints, and is hell slow to read/use this function.

The fingerprint reader was not an option when I bought my W541 in April. The W520 fingerprint reader was usable in Fedora, for what it is worth. Both should work fine in Windows (speaking from experience, works of fine point color calibrator Windows 8.1).

(6) microdrive/raid: having a raid will be beneficial? With ssd?

The microdrive is useful if your main drive is a stand-alone magnetic drive, or if you want to format and have a semi-permanent place to keep ~ 16 GB of data. You can get adapters to convert the optical Bay for a 2.5 "drive Bay HARD, that you can use for RAID 0 or RAID 1.

(7) keyboard pad num: anyone looking like / dislike it? The num key did all the keys closer and more difficult to type?

It takes getting used to typing with your hands to shift to the left. The keys seem to very small, however. It is not as bad as the HP keyboards with numpads, but if there is an option to get the keyboard without one, I would have taken the traditional keyboard.

(8) final thought: pretty stupid, but don't I have to wait for the quad core broadwell or even skylate? It's 'almost' seven.

If you do not need today, I'd wait. I liked my W520, and I pretty much hate my W541. The trackpad is the worst I've ever used, the keyboard has a number of quality issues, display of 3K there's nothing to get excited about, thermal reduction system needs to refine...

The only reason why I happen to be here today, is that I was shopping for a replacement for the W541 I bought a few months ago. It's pretty horrible.

Tags: ThinkPad Notebooks

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    I understand that there is a general fresh management regarding the use of space when you use SAMS, but I don't understand why there is such an increase in the number of blocks when I would have thought that the blocks were already allocated in the initial table creation phase. If I had inserted thousands of lines, I would have understood the jump in the use of block, but not with 134.

    Here are the results of the DBMS_SPACE. Procedure SPACE_USAGE
    UNF         0
          UNFB         0
           FS4         0
          FS4B         0
           FS3         0
          FS3B         0
           FS2         0
          FS2B         0
           FS1         2
          FS1B     32768
          FULL       891
         FULLB  14598144
    FS1
     Number of blocks that has at least 0 to 25% free space
    FS1B
     Number of bytes that has at least 0 to 25% free space
    FULL
     Total number of blocks that are full in the segment
    FULLB
     Total number of bytes that are full in the segment
    I used the DBMS_SPACE. Procedure UNUSED_SPACE and got these results:
    TOTAL_BLOCKS    912
    TOTAL_BYTES        14942208
    UNUSED_BLOCKS   0
    UNUSED_BYTES    0
      LASTEXTF      251
     LAST_EXTB      909
    LASTUSEDBLOCK   8
    
    Definitions taken from the docs:
    
    total_blocks
     Returns total number of blocks in the segment.
    total_bytes
     Returns total number of blocks in the segment, in bytes.
    unused_blocks
     Returns number of blocks which are not used.
    unused_bytes
     Returns, in bytes, number of blocks which are not used.
    last_used_extent_ file_id
     Returns the file ID of the last extent which contains data.
    last_used_extent_ block_id
     Returns the starting block ID of the last extent which contains data.
    last_used_block
     Returns the last block within this extent which contains data.
    Following this, here is how the stats are the deletion and insertion, shown in two steps:
    ##############
    # After deletion
    ##############
    
    FULL      850
    FULLB     13926400
    
    TOTAL_BLOCKS              872
    TOTAL_BYTES             14286848
    UNUSED_BLOCKS           4
    UNUSED_BYTES            65536
    LASTEXTF                 251
    LAST_EXTB            869
    LASTUSEDBLOCK            4
    
    109 extents
    
      NUM_ROWS     BLOCKS
    ---------- ----------
         80074        868
    
    ##########
    # After Insert
    ##########
    
    FS1              1
    FS1B          16384
    FULL            892
    FULLB           14614528
    
    TOTAL_BLOCKS              912
    TOTAL_BYTES             14942208
    UNUSED_BLOCKS           0
    UNUSED_BYTES                0
    LASTEXTF                 251
    LAST_EXTB            909
    LASTUSEDBLOCK           8
    
    114 extents
    
     NUM_ROWS     BLOCKS
    --------- ----------
        84351        911
    So, can someone get to explaining why this is happening?
    Or maybe some additional tests I can do to see what blocks are used for?

    Thank you
    SoC

    Rob_J wrote:
    As you can see, TEST 2 shows that, when you use the representative settings for PCTFREE and PCTUSED in MSSM to those of the SAMS, we get a result comparable to the use of SAMS.

    So, regardless of what I set PCTFREE to SAMS tablespace in a block must still have more than 25% of free space to be a candidate for the new pads?

    Not exactly - I think it is the next "Freeness" below PCTFREE, so if PCTFREE is for example 26%, then the block must have at least 50% free for its status as a 'FULL' erased and become a candidate for inclusion. PCTFREE under 25, Yes, then at least 25% I guess.

    Is it possible to change this behavior is this just a call, you have to take for the use of SAMS or y at - it a logical reason behind what I missed?

    Well, I guess that's what you get with segments 'AUTO' managed by magic - if the theory is correct, you can try a PCTFREE of 24 or 25 (not sure of the border), then several blocks should become eligible for the status of compensation when deleting lines. Of course, it's different from what you can achieve with MSSM - you are reserving more space for the growth future line with PCTFREE 25.

    Remember that the default PCTUSED is 40 for MSSM if you do specify not her - so the default behavior of the SAMS with 10 PCTFREE is already more aggressive towards provision for blocks compared to default MSSM insertions.

    You must also consider that SAMS was designed especially for the systems highly concurrent OLTP (and CARS) which deals, so there are many other considerations to take into account, as the way in which SAMS affects free to the various processes blocks and restraint potential reliefs on the segment header (similar to the use of FREELISTs and FREELIST groups with MSSM).

    Kind regards
    Randolf

    Oracle related blog stuff:
    http://Oracle-Randolf.blogspot.com/

    Co-author of the forthcoming "OakTable Expert Oracle practices" book:
    http://www.Apress.com/Book/view/1430226684
    http://www.Amazon.com/Expert-Oracle-practices-database-administration/DP/1430226684

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