Let us try to understand what is i7-3720QM for itself? To find out, we'll
ask our good friend ark.intel.com
Important points: 4 (Quad) Core, 8 HTs, TDP 45W, DDR3/DDR3L 1333/1666MHz,
GFX base FREQ 650MHz, GFX Device ID 0x0166 .
As I see from: https://www.coreboot.org/Board:lenovo/t420
vBIOS (64KB) file pci8086,0166.rom does exist, so GFX wise Coreboot is
supported. I guess, IVB FSP does support as well i7-3720QM, with built-in
MRC algorithms for DDR3 (1.5V) and DDR3L (1.35V) 1333/1666MHz.
The only one thing here to take care of is new MCU to be entered in config:
it is after all sku specific (new sku demands new MCU).
And one more important point, economy wise, this sku costs around $350 USD.
If you do have these monies, IVB is 61% more PM efficient then its
counterpart SNB (currently present in yout T420 laptop). :-)
On Sat, Aug 27, 2016 at 6:08 AM, <chub(a)tuta.io> wrote:
How stable is the i7-3720qm CPU Upgrade in the t420? You guys have it
listed under the tested portion. I want to grab myself one, but would want
to see if it's worth my time to upgrade the CPU, or just go with something
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