1. Lenovo ThinkPad X220 42872WU 12.5-Inch Notebook Computer (Intel Core i5-2520M,4GB RAM, 320GB HD, Windows 7 Professional), Black 4.8 out of 5 stars 10 Lenovo ThinkPad T450 14in Laptop, Core i5-5300U 2.3GHz, 8GB Ram, 256GB SSD, Windows 10 Pro 64bit, Webcam (Renewed).
2. Officially, 8GB is the maximum amount of memory that the X220 is supported for, i.e., tested and verified to work with. That said, I have 16GB (2×8GB DDR3 SO-DIMMs) installed in mine and it seems to work fine without any problems.
3. ThinkPad X220 Resources. The Lenovo ThinkPad X220 is an ultraportable notebook computer built on the Intel Sandy Bridge platform. Configured with a Core i3, i5 or i7 processor, 12.5-inch WXGA (1366×768) IPS or TN LED backlit display, optional integrated camera and multiple wireless options, the ThinkPad X220 provides an excellent balance of mobility, performance and connectivity.

The maximum amount of installable memory is 16 GB in two memory slots, allowing for dual-channel RAM. Just like the X220, it is possible to use a mSATA SSD within the second Mini PCI Express slot instead of a WWAN card. The Lenovo X220 comes with the latest Intel Sandy Bridge Core i5 processor running at a clock speed of 1.4 GHz. The model we reviewed had a 128GB SSD, which is a tad less in terms of storage requirements. As for the RAM, this notebook comes with 6GB out of which 5.89GB is available to users.

Resources

Lenovo X220 Max Ram Upgrade

Notes

• The CPU speed will be throttled back to 800MHz if the machine is run on the 65W AC adapter with no battery installed. To avoid this throttling
  • run on a 90W AC adapter, or
  • install a battery pack.
• It's possible to use a mSATA SSD within the second MiniPCI Express slot.
• On booting:
  • The X220 cannot/will not boot GPT disks using Legacy BIOS, you must setup UEFI.
  • The X220 will not boot /efi/*/*.efi unless 'signed'(?) into BIOS, you have to copy it to /efi/boot/bootx64.efi.
  • Disabling the BIOS setting 'USB UEFI BIOS Support' disables *all* USB booting, ie, both UEFI and legacy BIOS.
• Maximum DDR3 speed depends on the BIOS version. BIOS versions up to 1.28 allow RAM speeds up to 1866MHz. BIOS versions 1.29 and above limit RAM to 1333MHz. Modified versions of BIOS available that remove this limitation.
• The combined headphone/microphone jack is a 4-pin TRRS connector and is wired as per CTIA/AHJ standard (tip - left, ring1 - right, ring2 - ground, sleeve - mic). Which means, it is compatible with most modern cellphone headsets (including Apple); however, it is not compatible with older Nokia and Samsung headsets wired as OMTP.

Pages in category 'X220'

The following 62 pages are in this category, out of 62 total.

Lenovo X220 Ram Slots Drivers