Thanks for joining the community.
I understand you have problems with processor speed on i7-4770.
This problem might be the processor itself or the BIOS on your computer.
At this stage, please update your computer BIOS and make sure Intel SpeedStep Technology* is disabled at BIOS level.
* Enhanced Intel SpeedStep® Technology is an advanced means of enabling high performance while meeting the power-conservation needs of mobile systems
Please run the processor ID utility and take a screen shot of it and reply back with the information of reported and expected processor speed.
alan, I send test rendering, while the computer is running program without any mark 3790.00 ghz core speed but when rendering core speed 1197.00 disappointing ghz mark, make a great investment in this processor and motherboard gigabyte z87x, but I'm in trouble .
Agradesco your time, you're a good person.
Thanks for coming back to the community.
Sorry about the trouble. It seems you may have defective processor. I would understand that Intel SpeedStep Technology makes the processor run slower because is saving power, however, if this option is disabled at BIOS level it should not interfere with processor speed.
I may say you have defective processor then I recommend contacting Intel customer support for possible warranty options:
www.intel.com/chat and choose processor area
Just a small update about this issue. Please check for heat issues, at this point, re arrange the Fan and heatsink, if possible re apply thermal solution to your processor. The heat generated by the processor may cause this type of issues as well.