Difference in these CRT's?

Discussion in 'OT Technology' started by Strife, Mar 24, 2008.

  1. Strife

    Strife Active Member

    Joined:
    Sep 22, 2006
    Messages:
    27,459
    Likes Received:
    0
    Location:
    Irvine, CA
    My Viewsonic A90 is dying on me and I need to pick up a new CRT that I use for my 2nd monitor.

    I found someone on craigslist selling an A95f for only $20 that I'm planning on picking up after work.

    Is there any noticeable difference with these stats?

    A90: http://www.viewsonic.com/support/crtmonitors/a90/
    0.23mm horizontal dot pitch
    0.27mm diagonal dot pitch

    A95f: http://www.viewsonic.com/support/des.../aseries/a95f/
    0.25mm aperture grille [at center]

    0.27mm aperture grille [at corner]

    All the other stats are pretty close besides refresh rate, it just seems the dot pitch is different? Dunno what this means though.

    Also anyone know what the 'f' is for, I'm pretty sure I have an A90 at home but it could be an A90f.
     
  2. dissonance

    dissonance reset OT Supporter

    Joined:
    May 23, 2006
    Messages:
    5,652
    Likes Received:
    1
    Location:
    KS
    Dot Pitch: measured in linear units, usually millimetres, with a smaller number meaning closer spacing, or in dots per linear unit (taken from wikipedia)

    Bottomline, the lower the dot pitch the sharper/better the image.

    "F" means flat. Viewsonic calls it "Perfect Flat." That just means the monitor is a flat screen monitor (don't confuse that with flat panel....).
     
  3. dissonance

    dissonance reset OT Supporter

    Joined:
    May 23, 2006
    Messages:
    5,652
    Likes Received:
    1
    Location:
    KS
    Also, looking at the specs...

    The A95f supports up to 1600x1200 resolution and the A90 supports up to 1600x1280.

    It's weird that they don't have the same type of dot pitch measurement between the two. But either way, for $20 and assuming the monitor has good tubes, there isn't much to complain about.

    I had a PerfectFlat Viewsonice CRT from 2002 till 2006 when it started going bad. It was nice while it worked properly. When it started messing up, there would randomly be a pink tint over the screen.
     
  4. Strife

    Strife Active Member

    Joined:
    Sep 22, 2006
    Messages:
    27,459
    Likes Received:
    0
    Location:
    Irvine, CA
    Yea I had my A90 for 6 years until it started getting the yellow tint recently where you have to hit it a few times. It's gotten progressively worse the last month though so I think it's time to just get a new one.

    So I probably won't be able to tell the difference between the two, and yea the resolution thing is weird but I think I was using 1600x1200 on my A90 anyways. Thanks for the input.
     
  5. P07r0457

    P07r0457 New Member

    Joined:
    Sep 20, 2004
    Messages:
    28,491
    Likes Received:
    0
    Location:
    Southern Oregon
    they still make these?
     
  6. Strife

    Strife Active Member

    Joined:
    Sep 22, 2006
    Messages:
    27,459
    Likes Received:
    0
    Location:
    Irvine, CA
    Not the A series anymore, they have the G and E series now.
     
  7. deusexaethera

    deusexaethera OT Supporter

    Joined:
    Jan 27, 2005
    Messages:
    19,712
    Likes Received:
    0
    Don't buy a CRT. An LCD with a 24-bit panel and a DVI input will do everything your old CRT did, in about a third of the space, using about a quarter of the electricity, with none of the flicker or fuzz.
     
  8. Doc Brown

    Doc Brown Don't make me make you my hobby

    Joined:
    Mar 31, 2006
    Messages:
    16,404
    Likes Received:
    0
    Location:
    Ohio
    You mean 24"?
     
  9. Strife

    Strife Active Member

    Joined:
    Sep 22, 2006
    Messages:
    27,459
    Likes Received:
    0
    Location:
    Irvine, CA
    I went and picked it up yesterday, it's basically like my old one... can't beat $20.
     
  10. deusexaethera

    deusexaethera OT Supporter

    Joined:
    Jan 27, 2005
    Messages:
    19,712
    Likes Received:
    0
    No, I mean 24-bit, i.e. 8 bits per color. Some cheaper LCD panels are 18-bit, i.e. 6 bits per color. To make up for only being able to display 1 out of every 64 colors, the cheaper panels employ dithering.
     
  11. Doc Brown

    Doc Brown Don't make me make you my hobby

    Joined:
    Mar 31, 2006
    Messages:
    16,404
    Likes Received:
    0
    Location:
    Ohio
    Oh, I see. Just never saw them called 24 bit before. Normally they're called 8 bit.
     
  12. popsnbeer

    popsnbeer New Member

    Joined:
    Jan 23, 2006
    Messages:
    2,314
    Likes Received:
    0
    Location:
    Arizona
    you have literature on this? I'd like to read up on it.
     
  13. P07r0457

    P07r0457 New Member

    Joined:
    Sep 20, 2004
    Messages:
    28,491
    Likes Received:
    0
    Location:
    Southern Oregon
    blind leading the blind.
     
  14. dissonance

    dissonance reset OT Supporter

    Joined:
    May 23, 2006
    Messages:
    5,652
    Likes Received:
    1
    Location:
    KS
    Directed toward me or deusexaethera? I'm assuming you are referring to your buddy but not sure.

    And there is nothing wrong with someone buying a CRT for $20. I wouldn't recommend buying any new, but you aren't going to find a decent LCD for near that price unless you get lucky and rip someone off bad.
     
  15. P07r0457

    P07r0457 New Member

    Joined:
    Sep 20, 2004
    Messages:
    28,491
    Likes Received:
    0
    Location:
    Southern Oregon
    deusexaethera and popsnbeer.

    If you're really hard-up for cash, and it's your only monitor, then sure, do what you gotta do. If it's a 2nd monitor, I'd say live with the single good LCD until your finances improve.
     

Share This Page