Dell T3500 CPU Upgrade Question

Hello,

I want to upgrade my CPU to the latest CPU that i can on my motherboard.  I have 64gigs of RAM on my pc already so no issues there and plenty of power.  Just want to up the CPU.

How to tell which CPU will work with my motherboard. I  want to max it out without having to replace my motherboard.  

This is my config:

BaseBoard Manufacturer:"Dell Inc."
BIOS Mode:"UEFI"
BIOS Version/Date:"Dell Inc. A11 , 08/09/2013 12:00 AM"
Embedded Controller Version:"255.255"
Platform Role:"Workstation"
Processor:"Intel(R) Xeon(R) CPU E5-1650 0 @ 3.20GHz , GenuineIntel"
Secure Boot State:"Not Available"
SMBIOS Version:"2.6"
System Manufacturer:"Dell Inc."
System Model:"Precision T3600"
System SKU:"Not Available"
System Type:"x64-based PC"

Physical Memory (Available):"46.48 GB"
Physical Memory (Installed):"64 GB"
Physical Memory (Total):"63.93 GB"

- "Motherboard"
Availability:"Running or Full Power"
BIOS:"A11, DELL - 6222004"
Caption:"Motherboard"
Chipset:"Not Available"
Date:"08/08/2013 08:00 PM"
Manufacturer:"Dell Inc."
PNP Device ID:"ACPI\PNP0C01\A"
Power Management Capabilities:"Not Available"
Power Management Supported:"Not Available"
Product:"08HPGT"
Status:"OK"
Version:"A02"

- "Processor"
- "Intel(R) Xeon(R) CPU E5-1650 0 @ 3.20GHz"
Architecture:"x64"
ATPO:"Not Available"
Availability:"Running or Full Power"
Caption:"Intel64 Family 6 Model 45 Stepping 7"
- "Chipset Name":"Intel(R) Xeon(R) CPU E5-1650 0 @ 3.20GHz"
Link:"http://www.intel.com/content/www/us/en/search.html?keyword=Xeon+CPU+E5+1650+0+"
CPU Speed:"3.20 GHz"
Current Voltage:"0. volts"
Driver:"Not Available"
Driver Date:"04/21/2009 12:00 AM"
Driver Path:"C:\Windows\system32\drivers\intelppm.sys"
Driver Provider:"Microsoft"
Driver Version:"10.0.19041.546"
Ext. Family:"Not Available"
Family:"Intel Xeon™"
FPO:"Not Available"
INF:"cpu.inf"
INF Section:"IntelPPM_Inst.NT"
Install Date:"Not Available"
Last Error Code:"Not Available"
Level 1 Cache:"6 x 384 KB"
Level 2 Cache:"6 x 1536 KB"
Level 3 Cache:"12 MB"
Load:"9%"
Manufacturer:"GenuineIntel"
Model:"45"
Name:"Intel(R) Xeon(R) CPU E5-1650 0 @ 3.20GHz"
Number of Cores:"6"
Number of Cores Enabled:"6"
Number of Logical Processors:"12"
Part Number:"Not Specified"
Power Management Capabilities:"Not Available"
Power Management Supported:"No"
Processor ID:"BFEBFBFF000206D7"
Revision:"11527"
Serial Number:"Not Specified"
Service Name:"intelppm"
Status:"OK"
Stepping:"7"
Version:"Not Available"