Awesome response to my question, thanks for breaking it all down. I'm not as savvy as I'd like to be when doing these sort of modifications, so I'm trying to wrap my head around all of this.Where would one go about finding this MCU to be entered at config. I really hope I can learn to understand this more to be fully prepared to tackle this job.If you have any other reading material on the entire process I would love to see some more. It seems slightly too technical for me thus leading to my hesitancy towards flashing this.
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26. Aug 2016 22:57 by zoran.stojsavljevic@gmail.com: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). :-)Good Luck!ZoranOn Sat, Aug 27, 2016 at 6:08 AM, <chub@tuta.io> wrote:https://www.coreboot.org/Board:lenovo/t420
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 more powerful.
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