Dual Processor tyan s1564d

mamba · Post by **mamba** » Fri Jun 29, 2007 1:29 am

Hi
I found this motherboard, a tyan Tomcat IVD and I want to try some benches with it.
I know that I can mount on it 2x 233MMX pentium.
Maybe she is the best mp socket-7 board, very stable with all simm around, but I also noticed that there is no way to raise the FSB over 66MHz.

Is it true? Or maybe there are hidden settings or something?

KachiWachi · Post by **KachiWachi** » Fri Jun 29, 2007 4:47 am

http://www.tyan.com/archive/products/ht ... ativd.html

An i430HX is rated for 66 MHz.

Thanks.

jsc1973 · Post by **jsc1973** » Sun Jul 22, 2007 11:27 pm

A lot of motherboards made for Intel's 66 MHz bus chipsets on Socket 7 contained undocumented jumper settings for 75 and even 83 MHz, which Intel didn't approve of and the mobo manufacture didn't want to support. I'd download the manual from Tyan, study what jumper settings it does document, and then try some other combinations.

A lot of P233MMX chips will hit 263 easily on a 75 MHz bus, so it's worth trying if you're interested in seeing what it can do. It's a shame no one ever supported OpenPIC SMP, because I would love even now to be able to set up a rig with dual K6-III CPU's.

KachiWachi · Post by **KachiWachi** » Tue Jul 24, 2007 5:50 am

Clocking the thing at 75 MHz or better requires the motherboard cache and system RAM to also function at this rate...unless you can adjust the CPU and bus clocks separately.

For my M520 i430VX...they are unfortunately not.

I have yet to try this on the DFI.

Thanks.

Jim · Post by **Jim** » Tue Jul 24, 2007 6:20 am

It is not that hard to get Simms that will support 100 Mhz FSB speeds, so that part of the problem is easily solved. Whether of not the mobo cache can run at 75 Mhz or 83 Mhz is another issue, that you would have to check by testing.

KachiWachi · Post by **KachiWachi** » Wed Jul 25, 2007 5:26 am

@Jim -

SIMMS or DIMMS?

Jim · Post by **Jim** » Wed Jul 25, 2007 6:16 am

Simms. Would not think that those boards would support Dimms. As to Simms, I sent 8 matching 32 Meg sticks of 4 chip HP 72 pin Simms to a guy in Bulgaria. Don't know if they are still available; but I used to be able to get them at Above All for $25.00 per stick.

KachiWachi · Post by **KachiWachi** » Thu Jul 26, 2007 5:38 am

I never heard of 100 MHz SIMMS before.

An i430HX supports FPM/EDO SIMMS (8 Rows, 512 MB, 16/64 Mbit Technology).

An i430VX supports FPM/EDO/SDRAM SIMMS/DIMMS (5 Rows, 128 MB, 16 Mbit Technology).

Thanks.

Jim · Post by **Jim** » Thu Jul 26, 2007 6:31 am

Tell you what. I will check with Steve at Above All to see if he still has any of those 32 Meg 2 chip per side 72 pin HP Simms. If he does, and the price has gone down, which I suspect it would have, I'll pick some up for you. They may not be PC100, but they will support 75 & 83 Mhz settings, because when I was benching that 4 ton truck load of mobos I bought, to see which ones worked, I ran across a number of late Simm boards with documented settings up to 83 Mhz.

(EG # 1) ATC 5030 board : FSB Settings : 60 MHz; 66 MHz; 75 MHz; 83 MHz; Multipliers :2; 2.5; 3; 3.5; 4; 4.5. Chipset : Intel FW82439 TX & FW 82371EB. Ram slots : 2 Dimms & 4 Simms

(EG # 2) QDI Titanium 1B+ board : Details later, if you care.

EDIT : K, been there, - done that. You probably won't be interested; but Steve still has about 100 sticks of the HP Simm Ram I was talking about. I picked up 4 of them for $25.00 for testing purposes. The chip numbers on them are either : SEC Korea 734 KM416C4104AS-6 - or - SEC Korea 737 KM416C4104AS-6. The stickers say : SEC KMM5328004ASW-6 Korea 9740 H - and - HP 1818-6431 8M x 32 60 NS SIMM EDO.

Either they are better than HP claims, (Chip Data?), or they are just standard 60 nano second EDO sticks with 8 Meg chips instead of the usual 2 Meg chips. Will try them in the A-Trend board to see what they can do.