Which is the perfect OS x86 or x64 for intel core i3 cpu 530 @ 293 ghz

you posted a statement of fact not a question.
it will support
not
will it support(a real question)

well NO
and NO PC stated, only mobo.(lost the PC ?)
nor that this PC was mobo bought in India?
YOUR mobo is core2, not core(tm) processor
they are not even the same class nor socket
no
here is the list of core i3 (all are LGA
your mobo is core2. (older )
all are over 1000 pins, LGA1156 (gen 0)

you can not stuff 10 pounds(or kg) of mud in 1 pound sack.
no can do.

Unless you are VeRY good with a soldering iron, you can't. The CPU is hard wired to the main circuit board.

Yes, Johan. It is a 64-bit processor. (x64)

http://ark.intel.com/products/38512/Intel-Core2-Quad-Processor-Q8400-%284M-Cache-2_66-GHz-1333-MHz-FSB%29

http://en.wikipedia.org/wiki/64-bit

http://superuser.com/questions/179919/x86-vs-x64-why-is-32-bit-called-x86

Regards,
joecoolvette

No. Not the one listed above (socket LGA 1156) You need to look for a mobile CPU (possibly mobile 479). They differ physically and architecturally. Even then you need to establish that the CPU is removable and verify BIOS has support for upgraded chip. Talk to your local repair shop for finale decision.

Try reseating the CPU heatsink/fan with some fresh thermal paste like this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16835100007

The motherboard for the dc7600 has an Intel LGA775 processor socket. However, not all LGA775 processors are compatible with the motherboard. For the small form factor, the following CPUs are supported: Intel Celeron D Processors:
Intel Celeron D 331 Processor (2.66-GHz, 256K L2 cache, 533-MHz FSB) , Intel Celeron D 336 Processor (2.80-GHz, 256K L2 cache, 533-MHz FSB) , Intel Celeron D 346 Processor (3.06-GHz, 256K L2 cache, 533-MHz FSB)
Intel Pentium 4 Processors with HT Technology:
Intel Pentium 4 521 Processor (2.8-GHz, 1-MB L2 cache, 800-MHz FSB) , Intel Pentium 4 524 Processor (3.06-GHz, 1-MB L2 cache, 533-MHz FSB) , Intel Pentium 4 541 Processor (3.2-GHz, 1-MB L2 cache, 800-MHz FSB), Intel Pentium 4 620 Processor (2.8-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 630 Processor (3.0-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 631 Processor (3.0-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 640 Processor (3.2-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 641 Processor (3.2-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 650 Processor (3.4-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 651 Processor (3.4-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 661 Processor (3.6-GHz, 2-MB L2 cache, 800-MHz FSB) or
Intel Pentium D Dual Core Processors:
Intel Pentium D 805 Dual Core Processor (2.66-GHz, 2x1MB L2 cache, 533-MHz FSB), Intel Pentium D 820 Dual Core Processor (2.8-GHz, 2x1MB L2 cache, 800-MHz FSB), Intel Pentium D 915 Dual Core Processor (2.8-GHz, 2x2MB L2 cache, 800-MHz FSB), Intel Pentium D 925 Dual Core Processor (3.0-GHz, 2x2MB L2 cache, 800-MHz FSB), Intel Pentium D 930 Dual Core Processor (3.0-GHz, 2x2MB L2 cache, 800-MHz FSB), Intel Pentium D 940 Dual Core Processor (3.2-GHz, 2x2MB L2 cache, 800-MHz FSB), Intel Pentium D 945 Dual Core Processor (3.4-GHz, 2x2MB L2 cache, 800-MHz FSB), Intel Pentium D 950 Dual Core Processor (3.4-GHz, 2x2MB L2 cache, 800 MHz FSB)

Unfortunately, these are old processors and I don't see any available new. Newegg.com lists a couple available as refurbished. You may be better off getting a new computer with either a Intel I3 or current AMD processor.

I wish that I had better news for you.

Cindy Wells
(do not attempt to use a CPU that your motherboard doesn't support. It probably won't boot.)

if you have windows already installed you can use the upgrade advisor and that will tell you what programs will be affected http://www.microsoft.com/windows/windows-7/get/upgrade-advisor.aspx

You dont need any driver since your PC is configured as x64 bit processor so all you got to do is get hold of the XP OS which is meant for x64 compatible PC's. The one normally used is 32 bit named as x86. I hope u wont face any difficulty in getting hold of x64 based OS(XP)......sodeep

There are at least four processors which are described as Family 15 Model 4 Stepping 9 f=2.66GHz
These are described at http://www.cpu-world.com/cgi-bin/ajax/parts.fcgi?PART2=Intel+Pentium+4+CPU+2.66GHz&CGI=OUTPUT%3DW%26PART%3DPART2%26ACTION%3DMATCHFP%26WANT%3DURL%26FIELD%3DPART2
Drivers are OS dependent. Depending on your OS try the Intel driver update utility http://www.intel.com/p/en_US/support/detect/
or go here
http://www.intel.com/p/en_US/support

but I do not think you will find drivers, because these depend on your motherboard make and model, and your OS, not the CPU
Go to either/and your motherboard manufacturer's website and/or your system (computer) manufacturer's website for drivers.
10.December.2014

you could only upgrade the processor and RAM in this condition i.e.

you can only change your an upgraded p-III processor like 1.0 GHz, 1.1 GHz or 1.3GHz and
upgrade the RAM by changing to 256 in each slot.

that is all what u can do with ur pc