Best CPU for old motherboard

I have a HP Media Center PC m7360n http://h10025.www1.hp.com/ewfrf/wc [...] ct=1818344 and I want to know what would be the
best possible CPU upgrade for my motherboard.

Although I already know that any Core 2 Duo (e4300+) is incompatible with my motherboard, I wasn't sure if any of the Pentium Dual Core
Processors (e2140-e2220, e5200) were compatible due to the lack of information on the website http://compare.intel.com/pcc/showc [...] ture=en-US


I'm not planning to buy a whole new computer, or get a new motherboard. I'm just tryin to see how much juice I could squeeze out of my mobo. I already understand that it is old. =(

I have heard that someone had successfully installed an E6400 on an Asus P5lP-LE (which is the one I have) and had no problems. Unfortunately i forgot the source.

Another thing I noticed is my motherboard website said the maximum FSB for my motherboard is 1066 mhz. http://h10025.www1.hp.com/ewfrf/wc [...] 44&lang=en
But there are no CPU's that are compatible with my chipset thats 1066 mhz http://compare.intel.com/pcc/default.aspx?familyID=1
Maybe the 1066 mhz on the hp website is irrelevent to what Im lookin for. If so please correct me.

Are there any other possible CPU upgrades for my mobo that isn't a Pentium D series, or has a 1066 mhz fsb that fits into my chipset?

Any help would be much appreciated.

The features of my current CPU is found here http://compare.intel.com/pcc/showc [...] ture=en-US


Here are my specs:

HP Media Center PC m7360n
PentiumD 820 (P) DC 2.8 GHz
800 MHz front side bus
Socket 775

Chipset: Intel 945P

Manufacturer: Asus
Motherboard Name: P5LP-LE
HP/Compaq motherboard name: Emery-UL8E

NVIDIA XFX GTX 260 896MB

Buffalo 4GB DDR2 RAM

Thank you very much, that is exactly what I needed to know. Now I have one particular CPU in mind:

http://ncix.com/products/index.php [...] PROCESSORS

Do you think this one would work? You mentioned that I should stand by HP's compatibility list, so I chose a E6000 series CPU with a variable in the first zero, in which I found the E6700, but does it matter? Can I jump the gun and go for the E6850?

Another thing that I want to mention is that the CPU support list in the HP website you posted says its for the Leonite-GL8E, which I have an Emery-UL8E. I'm assuming it doesn't matter, does it?

Please excuse my noobiness.

The motherboard does matter. According to HP, the Emery-UL8E Supports the following processors:
- Pentium D 800 series (Smithfield)
- Pentium 4 600 series (Prescott)
- Pentium 4 HT (Prescott)

Nowhere does it mention support for Core 2 CPUs.

Great catch, it looks like HP has at least two versions of the P5LP-LE, one called the Leonite and the other called the Emery. It appeards the Leonite supports the Core 2, while the Emery does not. Since the original poster has an emery board (pun) he doesn't support Core 2!

http://h20000.www2.hp.com/bizsuppo [...] =c00590499

Necro much?