The high-end Core i7 for laptops will feature the i7 920XM moniker and will be clocked at 2.0GHz and the chip is based on the "Lynnfield" core. The TDP is expected to be lower than 55W and the chip will feature a Turbo mode that can clock up to some impressive 3.2GHz.
For comparison, the "Lynnfield" based Core i7 800 series have a TDP of up to 95W and clock up to 2.93GHz in Turbo less mode.
The other Core i7 laptop parts expected are 820QM (1.73 GHz, 8MB L3) and 720QM (1.6 GHz, 6MB L3), both with a somewhat better 45W TDP.
These chips will be limited editions, aimed at desktop replacement laptops that feature desktop like, high-end performance - you know, the ones that usually feature two MXM GPUs from Nvidia or AMD.
The model number chosen doesn't make much sense since the 920MX is clocked 660MHz below the desktop Core i7 920, which also can clock all four cores to 2.8GHz while in load. Single threaded performance will be similar but multi-threading will show no likeness.
Source: VR-Zone
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