Support in other languages: 
Reply
802.11n
JNavas
Posts: 570
Registered: ‎08-07-2010
Location: San Francisco Bay Area
0

Re: Difference between T420 and T420s?


ColonelONeill wrote:
I'd say you should get more than 4.5 hours on a 9-cell in the T420 >.>

Depends (greatly) on the power management setting.

Hope that helps,
John
ThinkPad T420s [ i7-2640M CPU | 8GB RAM | 1TB SSD | Bay Battery | BT | Webcam | FR | Win7Pro64 ]
nibs
Posts: 879
Topics: 43
Kudos: 143
Solutions: 39
Registered: ‎06-03-2011
Location: Portland, OR
0

Re: Difference between T420 and T420s?


JNavas wrote:
1.a USB 3.0 flash drives can be far faster than USB 2.0, notably the Patriot Supersonic Magnum.

  

     Thanks for mentioning that. I see flash and external harddrives as so related that I forgot to mention flash drives in my original post. There are some eSATA flash drives; however I believe that they tend to cost more than USB 3.0 models. The point I was attempting to make is that currently USB 3.0 is generally only good for connecting to storage (HDD, SSD, flash drive, external burner) and specialized kit (like the BlackMagicDesign Intensity). 

 


JNavas wrote:

1.b Flush ExpressCard USB 3.0 adapters are available with sufficient power for an external 2.5" HDD.


 I have an adapter similar to the one pictured (http://www.amazon.com/gp/product/B0046Y3INC). You'll notice that both the one pictured and the one that I own have an additional USB cable that plugs into the ExpressCard and a USB 3.0 port. This cable provides additional power because an ExpressCard cannot meet the power demands of USB 3.0. You may be able to connect to things without the power cable; however, the speeds might be slower or there may other issues.

     I've tried my ExpressCard adapter with two external drives, my Intel SSD when I was installing that drive in my system, and the HDD that came with my system, in both cases I needed the USB power cable. I tested this with two different USB 3.0 to SATA adapters, one came with the Intel SSD and other one was an enclosure.

     I have not tried the card with a USB 3.0 flash drive, and maybe it would be able to power that without the cable. The cable kind of makes things ugly has you have this cord going from one part of the laptop to another part. I only put up with it because it allows me to backup both my T420 and T400 over USB 3.0 speeds, and the T400 doesn't have eSATA. 

    



JNavas wrote:

 

A good alternative to that is mSATA SSD in the Full PCIe slot (unless you need internal WWAN).

Put Windows and programs on mSATA SSD and data on internal HDD, ideally 7200 RPM.

The hibernation file has to be on the SSD, but the paging file can be on the HDD.

This gives you most of the benefits of SSD with the capacity of HDD at much lower cost.


mSATA drives seem to cost a good bit more than SSDs. Another option is to use an SSD in the Ultrabay and convert the optical drive to an external. The mSATA does have the advantage of everything being inside the machine. 


------------------------------------------
When asking for help, post your question in the forum. Remember to include your system type, model number and OS. Do not post your serial number.

Did someone help you today? Press the star on the left to thank them with a Kudo!

If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help others with the same question in the future.

My TPs: Twist 2HU: i5-3317U Win 8 Pro, 4GB RAM 250GB Samsung 840 | T420 4177CTO: i5-2520M, HD+, Win 7 Pro x64, 8GB RAM, Optimus, 160GB Intel 320 SSD, Intel 6300 WiFi, BT 3.0 | T400 2764CTO: P8700, WXGA, Win 7 Ult x64, AMD 3470, 8GB RAM, 64GB Samsung SSD, BT, Intel 5300 WiFi | A20m 14.1" PIII 500 (retired). Monitors: 2x Dell U2211h IPS 100% sRGB calibrated w/ Spyder3.
802.11n
JNavas
Posts: 570
Registered: ‎08-07-2010
Location: San Francisco Bay Area
0

Re: Difference between T420 and T420s?

[ Edited ]
nibs wrote:

JNavas wrote:
1.a USB 3.0 flash drives can be far faster than USB 2.0, notably the Patriot Supersonic Magnum.

Thanks for mentioning that. I see flash and external harddrives as so related that I forgot to mention flash drives in my original post. There are some eSATA flash drives; however I believe that they tend to cost more than USB 3.0 models. The point I was attempting to make is that currently USB 3.0 is generally only good for connecting to storage (HDD, SSD, flash drive, external burner) and specialized kit (like the BlackMagicDesign Intensity).

While USB 3.0 is primarily useful today for storage and specialized devices, it will probably matter more over time for such things as HD video capture, direct computer-to-computer connections, printing, etc. As for eSATA flash drives, they are not only more expensive but also rare.


JNavas wrote:
1.b Flush ExpressCard USB 3.0 adapters are available with sufficient power for an external 2.5" HDD.

I have an adapter similar to the one pictured (http://www.amazon.com/gp/product/B0046Y3INC). You'll notice that both the one pictured and the one that I own have an additional USB cable that plugs into the ExpressCard and a USB 3.0 port. This cable provides additional power because an ExpressCard cannot meet the power demands of USB 3.0. You may be able to connect to things without the power cable; however, the speeds might be slower or there may other issues.
     I've tried my ExpressCard adapter with two external drives, my Intel SSD when I was installing that drive in my system, and the HDD that came with my system, in both cases I needed the USB power cable. I tested this with two different USB 3.0 to SATA adapters, one came with the Intel SSD and other one was an enclosure.
     I have not tried the card with a USB 3.0 flash drive, and maybe it would be able to power that without the cable. The cable kind of makes things ugly has you have this cord going from one part of the laptop to another part. I only put up with it because it allows me to backup both my T420 and T400 over USB 3.0 speeds, and the T400 doesn't have eSATA. 

That's yours. The adapter I referenced does have sufficient power for an external 2.5" HDD without a USB cable and without speed or "other issues".


JNavas wrote:
A good alternative to that is mSATA SSD in the Full PCIe slot (unless you need internal WWAN).
Put Windows and programs on mSATA SSD and data on internal HDD, ideally 7200 RPM.
The hibernation file has to be on the SSD, but the paging file can be on the HDD.
This gives you most of the benefits of SSD with the capacity of HDD at much lower cost.
mSATA drives seem to cost a good bit more than SSDs. Another option is to use an SSD in the Ultrabay and convert the optical drive to an external. The mSATA does have the advantage of everything being inside the machine.

While mSATA does cost more on a per byte basis than SSD, it can nonetheless be cost effective overall because mSATA does not need to be as large as SSD when paired with a fast HDD (as in my X220).

Hope that helps,
John
ThinkPad T420s [ i7-2640M CPU | 8GB RAM | 1TB SSD | Bay Battery | BT | Webcam | FR | Win7Pro64 ]
mpk
What's DOS?
mpk
Posts: 1
Registered: ‎07-11-2012
Location: US
0

Re: Difference between T420 and T420s?

[ Edited ]

nibs wrote:

The s gets you a USB 3 port.



Just a friendly correction-- the "s" in T420s does NOT automatically provide usb3.

My company shipped me one in February, and I anxiously bought a USB3 drive in anticipation. To make a long, sad story short, no USB3, even though it was configured generously (i7, 8gb RAM, SSD). There is eSata, but not having USB3 is a real head scratcher. On the other hand, the t430s does seem to automatically have usb3.

(Sorry to dredge up a year old thread, especially one from the earlier days of T420s, just want to prevent someone from being disappointed)
802.11n
JNavas
Posts: 570
Registered: ‎08-07-2010
Location: San Francisco Bay Area
0

Re: Difference between T420 and T420s?

[ Edited ]

mpk wrote:

nibs wrote:

The s gets you a USB 3 port.

Just a friendly correction-- the "s" in T420s does NOT automatically provide usb3.
My company shipped me one in February, and I anxiously bought a USB3 drive in anticipation. To make a long, sad story short, no USB3, even though it was configured generously (i7, 8gb RAM, SSD). There is eSata, but not having USB3 is a real head scratcher. On the other hand, the t430s does seem to automatically have usb3.
(Sorry to dredge up a year old thread, especially one from the earlier days of T420s, just want to prevent someone from being disappointed)

With respect, the "s" in T420s does get you a USB 3.0 port.

It's on the back of the machine, properly marked.

See the ThinkPad T420s data sheet.

If you didn't get one, then you should file a claim under warranty.

Hope that helps,
John
ThinkPad T420s [ i7-2640M CPU | 8GB RAM | 1TB SSD | Bay Battery | BT | Webcam | FR | Win7Pro64 ]
nibs
Posts: 879
Topics: 43
Kudos: 143
Solutions: 39
Registered: ‎06-03-2011
Location: Portland, OR
0

Re: Difference between T420 and T420s?

@mpk have you found the USB3 port yet?


------------------------------------------
When asking for help, post your question in the forum. Remember to include your system type, model number and OS. Do not post your serial number.

Did someone help you today? Press the star on the left to thank them with a Kudo!

If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help others with the same question in the future.

My TPs: Twist 2HU: i5-3317U Win 8 Pro, 4GB RAM 250GB Samsung 840 | T420 4177CTO: i5-2520M, HD+, Win 7 Pro x64, 8GB RAM, Optimus, 160GB Intel 320 SSD, Intel 6300 WiFi, BT 3.0 | T400 2764CTO: P8700, WXGA, Win 7 Ult x64, AMD 3470, 8GB RAM, 64GB Samsung SSD, BT, Intel 5300 WiFi | A20m 14.1" PIII 500 (retired). Monitors: 2x Dell U2211h IPS 100% sRGB calibrated w/ Spyder3.