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NVIDIA GeForce GT 550m vs 555m

Discussion in 'Laptops & Tablets' started by lfc, Dec 1, 2011.

  1. lfc

    Associate

    Joined: Nov 9, 2011

    Posts: 53

    Just been comparing these two and wondered if anyone could explain the results:

    [​IMG]

    1. Pixel Shaders - the higher the number the better?
    2. The range of the core speed for the 555m starts lower and goes only slightly higher than the 550m - which is better?
    3. Same as 2 but this time for Shader Speed - again, which is better?
    4. Max memory speed is the same for both? Are there any advantages for being able to go lower?
    5. Do you want a higher memory bus if possible (so is the 555m better here)?
    6. 3DMark appears to be a program used for testing the cards performace, with 01 being the oldest version, 06 the newest. Why does the 550m have higher readings than the 555m on the older version but not on the newer?
    7. Again with the 3DMark, what do the red/pink and green bits mean?
     
  2. TheHitMan-1973

    Wise Guy

    Joined: Feb 2, 2010

    Posts: 1,226

    Location: Haywards Heath

    :D:D
     
    Last edited: Dec 1, 2011
  3. lfc

    Associate

    Joined: Nov 9, 2011

    Posts: 53

    What do you mean? It's fine for me
     
  4. str

    Mobster

    Joined: Oct 18, 2002

    Posts: 2,738

    The GT550M in the L702x is like a GT555M in that they both have 144 cores but the GT550M is clocked at 475 and 950 for the core and shader clock speed whereas the GT555M is 590 and 1180 for the core and shader clock speed. The other difference is the GT550M has either 1GB or 2GB which means it'll be 128-bit (2 x 512MB or 2 x 1GB) whereas the GT555M is 192-bit.

    Saying all that it's not easy to compare the two but from what has been said recently, the GT550M can be overclocked to bring it close to the GT555M level of performance but of course the GT555M can be overclocked too.
     
  5. lfc

    Associate

    Joined: Nov 9, 2011

    Posts: 53

    Ah okay - so the figures in the image are the max possible for each card, but in the L702x they are just not maxed out in all areas yeah?
     
  6. str

    Mobster

    Joined: Oct 18, 2002

    Posts: 2,738

    I would say those figures give a rough idea of performance. I'm not sure if it is maxed out or not.
     
  7. Tee Hee Johnson

    Mobster

    Joined: May 30, 2007

    Posts: 3,084

    Location: Glasgow, Scotland

    That's what i've done, my 550M is at a modest 700 core, 1400 shader, 1100 Memory... It has made some difference! Think its about 10-15% quicker than a stock 555M now (but as you say, that can also be over clocked)

    People clock them much much further, volt mod and all that stuff, I'm not into any of that jazz!

    If there was the perfect laptop and had either of these cards, I would take it :) I don't think there is too much of a difference to rule out a good machine due to something so similar!
     
  8. ShortWarning

    Mobster

    Joined: May 10, 2004

    Posts: 3,581

    Location: Middlesex

    Is it a good idea over clocking the 550/555? I was under the impression that over clocking these can cause over heating in a laptop?
     
  9. TheHitMan-1973

    Wise Guy

    Joined: Feb 2, 2010

    Posts: 1,226

    Location: Haywards Heath

    Ive overclocked my GT555 to the following with no heat problems

    Also takes my window score to 5.7

    Core Clock 730 MHz
    Shader Clock 1460 MHz
    Memory Clock 1110 MHz

    [​IMG]

    Uploaded with ImageShack.us
     
    Last edited: Dec 2, 2011
  10. Tee Hee Johnson

    Mobster

    Joined: May 30, 2007

    Posts: 3,084

    Location: Glasgow, Scotland

    Seems to be the CPU that gets nearer it's thermal max than the GPU!

    Actually, overclocking didn't seem to do much to the temps at all...!
     


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