That's really a question that Zebronics needs to answer. Only they can tell you what processors are supported by their board and their BIOS.
I will say, however, that I rather doubt it will work. Most 945G motherboards supported only the Pentium 4, Pentium D and Celeron D processors. A few boards supported early Core 2 Duo processors, but none that I found supported the Core 2 Quad processors. You need to remember that most 945 boards were released in 2005 and the Q6600 processor did not arrive until 2007.
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Due to this product being discontinued, Intel Customer Service no longer supports inquiries for it, I am glad to see that fellow community members have the knowledge and they jumped in and helped. You may also find the Discontinued Products website (https://www.intel.com/content/www/us/en/support/discontinued-products.html) website helpful to address your request.
You can get the specifications and verify this product's discontinuance status at the Intel® Product Specifications website > Product Status > "Discontinued". https://ark.intel.com/
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