This message was posted on behalf of Intel Corporation
Thank you for joining the Graphics community.
I can help with your two questions, let's start with the driver first. For you to know you do have the latest driver installed and this you can tell by looking at the last 4 digits of the version, in your case .4578. Let me explained these numbers; Intel uses the following schema to define driver versions:
Driver Baseline: Differentiates different generic driver packages and is often assigned based on the supported platform(s) and operating system(s).
Revision: Used internally during the driver development cycle.
Build number: Last four digits indicate the actual driver number.
For information is stated at the following link: Understanding the Intel® Graphics Driver Version Number
Now regarding your second question, please bear in mind that the maximum graphics clock speed 1.10 Ghz that you are referring is actually called the Graphics Max Dynamic Frequency, you missed the dynamic and what I mean here is that this parameter will be reach whenever the processor graphics needs it. There is not option to make the graphics frequency to reach its maximum since it's a dynamic value.
Hope this helps, and if you have more questions please let me know.