i am going to build a dual core 2 processor. Looking for MB

Not happening. The Core 2 Duo doesn't have the ability to work in a multiprocessor situation. Only the 5xxx and 7xxx series Xeon processors can do so. Those are LGA 771 and a different beast all together.

You are most likely after one of the below solutions:

- 2 x Xeon 5100 (2 x 2 cores)
- 1 x Core 2 Quad (1 x 4 cores)
- 2 x Xeon 5300 (2 x 4 cores)


I can help you with this, as I've used Tyan, etc gear before and understand the Registered, ECC, and/or FB-DIMMs and 'workstation/server' chipsets on the board of which you speak. (and several of which you haven't, but may want to look at).

Core 2 Extreme QX6700 is covered here:
http://www.anandtech.com/cpuchipse [...] spx?i=2866

Quad-Core (2 x 4 = 8 way) Xeon E5300 article:
http://www.dailytech.com/article.aspx?newsid=4914

The Xeon 5100 / 5300 are covered here on the Intel site:
http://www.intel.com/products/processor/xeon/index.htm

8) Bear in mind the 5100 / 5300 both use the Core 2 Micro-architecture, they just permit 2 sockets, each with 2 or 4 cores, for 4 - 8 way computing - typically with 8 - 32 MB L2 cache.


You may also want to check out:

::TyanPSC:: (Personal Super Computer)

http://www.tyanpsc.com/ - Link to TyanPSC site

http://www.tyan.com/ - Link to Tyan site

ftp://ftp.tyan.com/typhoon/TYAN_Typhoon_512K.wmv - Video - May need to right-click, then save as... / download before playing - It may not work with a single left click.

Despite what the video says their latest model will provide 256 GLFOPS, using 40 x 1.6 GHz Xeon (Core 2 based) cores.

The Xeon 5100 / 5300 series are younger than the Core 2 Duo

Oh, I had the impression that June 26 (Xeon 5100) comes before July 23 (Core 2 extreme x6800). But I was rather speaking in terms of the architecture of the chip itself, as the xeon architecture is much older than the Core 2 duo’s and more specifically the Core 2 extremes. So I was actually right no matter how you view my original statement 8)

Point taken, just takes about 4-6 weeks for Xeon (sever) CPUs to become available, so the July announcement annoucement led to September / October availability.

While the Core 2 Duo chips are generally available from électronic retailers within 2-3 weeks of being announced.

I'll give you that one 8) , but I'd rather forget (not referenced above, bar last comment) the Netburst based Xeon 5000 series and earlier.

The only Intel non-NGMA* server CPU series on the market I am aware of is the Xeon 7000 series, and they are power monsters using Netburst with high core counts and heaps of cache.

* - Next Generation Micro-Architecture = (Core 2 Micro-architecture)


But yeah, both the Xeon 5100 and Xeon 5300 series are based on the Intel NGMA (Core 2) micro-architecture. The later being for 2 x 4 core server / heavy workstation systems.