Thanks for everyone's efforts on this hard to answer question. I have the manual in PDF format and it only talks about P4 as well even though I ran the Pentium D in it for almost 6 years owning it, as for when i bought it thru Newegg the Pentium D was the most power I could afford to put into it at the time.
I did see a mention in the PDF manual that states Dual Cores not supported, but "Not Supported" sometimes means that it may work but they don't offer support for it as if it may not have been stress tested under dual-core CPU's.
I guess I am going to offer the CPU to my friend to take a try at it if he wants it. Its less than $5 to ship it to Canada. Compared to his Pentium 4 1.5Ghz this Pentium D 3.0Ghz is far better for gaming. Prior to giving him this Motherboard, CPU, GeForce 7800GT 256MB PCIe, and 2GB 667Mhz DDR2 Ram I tested it with MoP beta for World of Warcraft, so he should be all set just sticking with the Pentium D if that's what he chooses to do. The Pentium 4 1.5Ghz and GeForce 6200 AGP (4 or 8x ) 256MB he was running with 1GB of Ram was breaking a sweat trying to run World of Warcraft and XP Home OS on lowest graphic settings and 12 frames per second. The hardware I gave him allowed for Good Settings with 20 to 30 FPS vs having to run in POOR mode on the old P4 that he had been doing out of desperation to play the game.
He ended up surprising me by sending me a 60-day WoW game card as even exchange for this even though I didn't need to be paid for it. I like to help out friends who cant afford newer computer hardware and its my hand-me-downs going to use vs landfill. * Maybe computer hope should add a tab for up for grabs hardware
( Good 'older' Hardware looking for Good Home ) LOL
