Can I put Snow Leopard 10.6.8 on my Powermac G5?

I have a Powermac G5 with Leopard 10.5.8 on it and would like to upgrade to Snow Leopard 10.6.8 or better if possible. My specs are as follows:

Model Name: Power Mac G5

Model Identifier: PowerMac7,3

Processor Name: PowerPC G5 (3.0)

Processor Speed: 1.8 GHz

Number of CPUs: 2

L2 Cache (per CPU): 512 KB

Memory: 4 GB

Bus Speed: 900 MHz

Boot ROM Version: 5.1.8f7

Serial Number (system): G851****QPL

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