90w vs. 65w power adapters

We use the T61's and X61's with the port replicators for the T's and the Ultrabases for the X's.  Is there any reason or need for the 90w power supplies?  Please advse.  Thank you.

Hello,
Welcome to the forums.
The difference between the 90W and 65W power adapters is quite simply the power output to the computer based on power consumption by the unit.
The T-series systems with dedicated video cards (NVidia or ATI) require the more powerful 90W power adapters - the 65W PAs will not provide sufficient power required by the dedicated video cards. Thus the 90W power adaper is the only choice for T-series systems with dedicated video cards.
The X-series, on the other hand, use an on-board graphics adapter without dedicated GPU and come with the 65W power supply simply because of the much lower power requirement. The X-series systems (whether docked in the X6 ultrabase or not), unlike the T-series sibblings, may use either the 90W or the 65W power adapters interchangeably.
Hope that helps
Message Edited by icantux on 06-13-2008 03:50 PM

Similar Messages

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    Hi everyone, i am about to buy T61 without the graphic card.
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    Thank you

    integrated graphic card model should come with 65 w power adapter... while those Nvidia one has 90 w power adapter..

  • Some 65W Power Adapters only seem to give 50W

    He folks,
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    EH264..JNQBA
    (the ".." numbers differ between the two adapters)
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    Thanks very much
    Richard

    Hi,
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    http://www.coconut-flavour.com/coconutbattery/
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    Richard

  • 13" MacBook Pro w/ 65W power adapter.

    Are the 65W power adapters for the 13" MBP sensitive to power fluctuations? Mine is not working at my inlaws (rural area) but seem to work at home in a more urban area.

    Every power supply has input power quality tolerances.
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    This excerpt from Troubleshooting MagSafe adapters may be applicable:
    Identify line noise issues.
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  • Thinkpad X Series Power Adapters (65W, 90W, etc) Lenovo Store Suggestion

    Well, I decided to play pretend today on Lenovo's Thinkpad X Series laptop shopping site. My brother in law needs a new computer, so I look at all the options. Then it hits me, what is going on with the power supplies?
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    The 90 watt adapter costs more to produce than the 65 watt, the price at the online store for accessory may change depending supply and demand. I am not sure why the 90 watt adapter dropped below that of 65 watt, in most instances the price is other way around.
    Regards,
    Jin Li
    May this year, be the year of 'DO'!
    I am a volunteer, and not a paid staff of Lenovo or Microsoft

  • 65W power adapter VS 90W adapter

    I have a T400 2765, it was shipped with a 90W power adapter, I was recently given a 65W adapter. Is it ok to charge my battery with the 65W?, with my laptop being shippied WITH a 90W? I have a 9 cell batter and a 4 cell battery.
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    Solved!
    Go to Solution.

    It's perfectly fine to charge the computer using the 65w power. It will most likely run fine using the 65w power as well, but might not be able to give the computer enough power under some circumstances. Also for some Thinkpads like the W510 which is shipped with a 135w power the computer work fine using the 90w power, but the computer will basically be slower. It might take longer to charge as well.
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  • Will a 65w power supply work with the HP Envy 15t (which comes with a 90w)?

    I have multiple extra 65w power supplies from previous machines.  The pin that plugs in to the machine is different, but there are converters to get the right size pin.  If I get that right pin, is it safe to use a 65w power supply with the HP Envy 15t, which came with a 90w supply?
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    Hi,
    For the 65W, It will work, BUT check the tip/connector. The only problems: battery charging could take longer time and for high graphics task it may display an error message. For the 90W, again pin/connector is the main concern.
    Regards. 
    BH
    **Click the KUDOS thumb up on the left to say 'Thanks'**
    Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

  • Alternative power adapters for the X220

    As posted in other threads, there are problems using the "native" Lenovo power adapters with the X220:
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    - The 90W adapter is big and heavy.
    - The Ultraslim 90W adapter causes erratic touchpad behaviour.
    bender957 recommended the FSP NB L90 90W adapter that, according to his experience, does not suffer from any of the issues listed above.
    Unfortunately, that post and others discussing that adapter were removed from the thread they were posted to as off topic, so I created this one to host the discussion.

    The SNA 95 has arrived. It's about the same size as the new 90W Dell adapters, so maybe not as small as I was hoping. The Dell adapters struggle to put out 90W without getting dangerously hot though.
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  • Power adapters and worldwide compatibil​ity - a lesson

    The standard fare today in power adapters is such that the brick itself is compatible around the world. Indeed, the input power on a Lenovo AC adapter is rated from 100-240V and 50 or 60Hz - capable of operating on any power standard. The only catch is of course the wall plug in various countries. Again, most adapters have a removable adapter-to-wall power cord and if the manufacturer has a worldwide presence, you can likely order a country-specific power cord. Lenovo is such a company and you can find power cords for most geographies, like here. I'm preparing for a trip to New Zealand, my first out of the country, and wanted to be prepared to have my lifeline (aka ThinkPad) ready for the new locale. I looked up the power cord FRU (Field Replaceable Unit) number, called up IBM parts to verify availability, and placed the order. I was also delivering a new T61 to my mother-in-law and the U.S. power cord would be a burden down there. At $2.80 each plus a flat shipping fee, it was a no-brainer.
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    Message Edited by Tim_Lenovo on 12-05-2007 12:50 PM
    Tim Supples
    Lenovo Social Media
    Got a question? Don't PM me, post it on the forum!
    Lenovo Blogs
    X60 Tablet SXGA+ primary, Z61p fully loaded workhorse

    They are different because the two notebooks use a different power system. Your R51 uses the old 16V adapters and the T60 uses the newer 20V versions. Starting with the Z60 series, it was decided to upgrade our power delivery capabilities to meet the ever-increasing power demands of mobile computing.
    You can read more information in a couple of our blog posts on the topic:
    http://lenovoblogs.com/insidethebox/?p=51
    http://lenovoblogs.com/designmatters/?p=23
    Tim Supples
    Lenovo Social Media
    Got a question? Don't PM me, post it on the forum!
    Lenovo Blogs
    X60 Tablet SXGA+ primary, Z61p fully loaded workhorse

  • Is the 65W power supply killing small laptop hard drives?

    Apple is NOT shipping 45W power supply units to my country (Costa Rica) and the authorized resellers are selling 65W power supply units to PowerBook 12" and iBooks owners, saying that older and smaller laptops can use the 65W unit without problems.
    In 1 month, 3 of my friends have lost their powerbook 12" hard drives, all of them were using 65W units.... is it possible that the 65W unit is damaging the hard drive?
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    Well the authorized resellers are the ones you should
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    Yeah, this is absolutely possible, but what are the chances that the three laptops using wrong adapters had hard drive problems?...
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    Regardless, what happened to their original adapters?
    One guy lost it on a trip to the beach; the cable that goes to the computer was broken on the other two.
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  • Compatible power adapters?

    My daughter is living on a remote Pacific island with an old Titanium PowerBook (400 mhz) that she says is suddenly not getting power from its power cord. She is assuming the problem is the adapter, which is the yoyo-type.
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    Hi, Paul. Either of the adapters you've sent to your daughter will work with her 400MHz Powerbook, which originally came with a 45W adapter. All Powerbook and iBook G4s use the same size plug, but the later, more powerful models need a 65W adapter for full, reliable, as-designed operation. Your daughter's machine doesn't, but neither will a 65W adapter do it any harm.
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  • W540 power adapters

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  • Direction on safe power adapters for iPods from US to Travel in France

    Hello, I searched other topics found the Apple power adapter plug for the ipod discussesd this topic (which I do already have), but it did not SPECIFICALLY say that it will convert from US (110v) to Euro - France (220) volt. All the instructions from available power adapters (non-Apple) specifically say 'not for use with stereo or musical equipment.'
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    hiya!
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