Conroe is at least 8 years old, Netburst is much older. Even then based on experience I would say they only come close to the Celeron versions.
Thread scheduling has nothing to do with instruction scheduling; you can't jump to another thread when an instruction is taking too long to execute, and without out-of-order you can't execute any future instructions either.
Try reading some reviews for any atom based system (from independent websites, not those that sell the product they are reviewing); they are a joke and have a terrible reputation, for good reason.
Thread scheduling has nothing to do with instruction scheduling; you can't jump to another thread when an instruction is taking too long to execute, and without out-of-order you can't execute any future instructions either.
Try reading some reviews for any atom based system (from independent websites, not those that sell the product they are reviewing); they are a joke and have a terrible reputation, for good reason.