The laptop is in like-new condition, seldomly used
1. Upgraded to i7-2670QM quad core
2. The DVD burner is replaced by a 2nd hard drive adapter
3. Battery cycle is only 3


ThinkPad T420 (4236-B27)
i5-2540M(2.6GHz) 4GB RAM 320GB 7200rpm HD 14in 1600x900 LCD NVIDIA N12P-NS1 1GB CDRW/DVDRW Intel 802.11agn wireless WWAN option Bluetooth 1Gb Ethernet UltraNav Secure Chip Fingerprint reader Camera 6c Li-Ion Win7 Pro 64

Warranty is good to 12/1/14
This product has a three year special bid limited warranty and is entitled to parts, labor and on-site repair service. Service is available Monday-Friday, except holidays, with a next business day response objective

Ask for $780 free shipping to CONUS, paypal (3% transaction fee applies to paypal) or amazon payment accepted

If the processor was upgraded wouldn't that void the warrantee?

Just curious - what was your experience with the quad core processor in the T420?

It wouldn't affect the warranty according to Lenovo's policy, although the processor itself is not under Lenovo's warranty.

To be honest, I did not use this laptop that much.
The best I can tell is that quad core processor is way much faster than dual core one. And Sandy Bridge quad core is good at temp and power control, so the thermal system on T420 is fairly enough to handle this monster, and idle power consumption is pretty much the same compared to dual core model.

bump