Asus M4A785d-M pro and Phenom II X3 720 overclock

Processors Phenom X3 II AMD quads are actually X4 with a core disabled, either because it is physically defective or their cache or because it has passed strict quality control, but 4 core exists in the X3. All you need is a motherboard chipset with the 790GX, although they have shown that also works with 790GX and 790FX boards, yes, with the SB700 or SB750 southbridge. In the BIOS of the motherboard, it has to change the value to Auto Advance Clock Calibration and that's it, save changes and reboot into the BIOS and operating system should appear the fourth core.

What I will said is that increase multiplier only, not to change anything in RAM, in addition the 2:1 ratio is correct for your RAM (DDR2). Look in the manual for your bios first if you do not clarify your bios, and you have some way to change the default options for Asus M4A785d-M pro that will automatically bring you performance .

Thermal paste is not necessary?

ntil yesterday, I thought the thermal paste was required (between CPU and CPU coolers).

Having received i7 processor, open the box and read the quick guide installation of Intel processor, The installation process images with text etc etc , I'm amazed it does not make use of thermal paste.

I supposed it is very important right?

Without Thermal paste between the CPU and the heatsink, it will work but not for long.

It is likely that the thermal paste is already on the radiator in the form of a colored band.

According to Intel, a substance on the radiator is the thermal paste.

Without thermal paste, no idea! The simple metal-metal contact between the CPU and the heatsink is far enough and will trigger the thermal protection of the CPU. Again, modern space heaters are often equipped with a material that serves as a thermal paste. The only drawback is that it is usable only once. At first dismantling of processors you must put some thermal paste. If the thermal paste was useless, why intel would suggest to use to improve performance of processors.

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Thermal material is used to fill small imperfections (gaps) between the CPU and heatsink.Ideally if the CPU was perfectly flat and so was the Heatsink, no thermal material would be needed. That's not going to happen so there needs to be thermal material. The Intel Heatsink/Fan will come with the paste already applied . If your heatsink has a pad pre-attached you can use that in the meantime, but I'd say chances are your temps won't be in a satisfactory range without it.