Is there a motherboard with... ?

[Walk]

Is there a motherboard with,

Slot-1 (cpu is PIII-700 coppermine)
64bit PCI slots (at least 1) <- the hard part
UDMA66
AGP 4x
takes normal SDRAM (PC100 or PC133)
capable of 133mhz bus with proper dividers for PCI/AGP?

If there is, I haven't found it. I know a board like the ASUS P3V4X will do all the above except the 64bit PCI slot...

 

[AndyHui]

What do you need the 64-bit PCI slot for? Only the 440GX, 450NX and a few other chipsets like the Serverworks Reliance chipsets support 64-bit PCI slots.

The BX, i810, i815, i820, VIA Apollo Pro 133A, do not support PCI-64.

Either way, there are no motherboards that fit your requirements, and unlikely that they would fit your budget either.

 

[Braxus]

Looks like you want the PIIIDME from Supermicro. Has what your looking for as well as an extra CPU slot. Don't know if that will be a hassle though... Uses the Intel i840 chipset w/SDRAM MTH.

Supermicro PIIIDME

 

[Walk]

Thanks that board looks great. I need the 64bit slots for Adaptec 29160 SCSI. This is for high-end graphic workstation, and sometimes game machine

 

[Warrenton]

I believe that the 29160 can run on a 32-bit PCI slot also. If not, why not get the 19160?

Its high doubtful that you will use all 160MB/s (which would swamp the PCI bus.)

 

[Peter]

A 64-bit PCI card works fine and well in 32-bit slots (unless there is mechanical obstruction). Of course, you'll be limited to 133 MByte/s, but since (a) the drives are slower and (b) this does not keep the SCSI interface from doing 160 MByte/s bursts, there is not much actual performance loss unless you are building a server with multiple channels or RAIDs that all use high-speed HDD drives.

By the way, before getting a SCSI controller, have a very close look at LSI's Symbios 21040 and Tekram's 390U3W controllers. Unlike Adaptec's 29160, these two are true dual-channel adapters offering one U160 channel and one completely independent legacy UW channel. The Adaptec uses a single channel with an electrical separator between the U160 and the UW segment.

The advantage of having two actual channels is that you can connect your slow peripherals to their own channel while keeping the fast stuff on the U160 one. On a single-channel adapter, access to a peripheral harms HDD throughput.

Besides, at least the Tekram adapter in retail kit version (complete with cables, adapters, and U160 terminator) is only slightly more than a naked bulk Adaptec, and almost $50 cheaper than Adaptec's kit that brings a less capable adapter _and_ includes less cabling material.

The genuine LSI symbios 21040 is inbetween these two, and has no advantage over the Tekram other than using a more feature laden SCSI BIOS. (Either are flash upgradeable.) The main hardware difference is that the Tekram has the U160 channel on the external connector, while the LSI has the UW channel there. The Tekram comes with a slot bracket to provide an external connection on the UW channel, so that's another plus for the Tekram. They both use the same LSI Symbios 53C1010 twin-U160 chip.

Regards, Peter

PS: And if you decide to go U80 instead of U160 (not much performance loss either), first and only pick is LSI's 21002 adapter, which also uses a dual-channel single-chip architecture for one U80 and one UW channel. (Tekram's 390U2W is single-channel with separate segments for U80 and UW.)