Tyan

Tyan was a manufacturer of motherboards for the IBM PC and its compatibles during the DOS era.

 

S1468 PCB-03

Year: 1996
Type: Socket 7
Form Factor:
Chipset:
Slots:
Memory:
BIOS: MR BIOS Rev. 3.27
Known Board Revisions:

This board supports Cyrix 6x86 P120+ and P150+ CPUs.

 

S1562

Year: 1996
Type: Socket 7
Form Factor:
Chipset:
Slots:
Memory:
BIOS: Award
BIOS Dates: 04/24/96
Known Board Revisions:

This board supports Cyrix 6x86 P120+ up to P166+ CPUs.


 

S1564D 'Tomcat IV'

Year: 1997
Type: Socket 7
Form Factor: Baby AT
Chipset: Intel 430HX
Slots: 5 x ISA, 4 x PCI
Memory: 8 x SIMM
BIOS: Award

This is a dual-Pentium board with 512 KB L2 cache. It supports bus frequencies of 50, 60, and 66 MHz. Two TAG RAM sockets provide cacheable area of up to 512 MB. Core CPU voltages are 3.2V, 2.9V and 2.8V.

Tyan is known for excellent reliability and obviously they decided to remain on the 'safe shore' of 66 MHz. All tests ran without any difficulties, I was surprised that my 'memory mix' consisting of 2x 32 MB EDO, 4x 16 MB EDO (2x 2k and 2x 4k refresh) as well as 2x 4 MB FPM (total of 136 MB) worked as well. Please consider that this mix contains of EDO and FPM, 16-chip, 12-chip, 8-chip and 2-chip modules just as symmetric and asymmetric equipped types! You will rarely find such a fine motherboard.

S1571 'Titan Turbo'

Year: 1997
Type: Socket 7
Form Factor: Baby AT
Chipset: Intel 430TX
Slots: 4 x ISA, 5 x PCI
Memory: 6 x SIMM, 2 x DIMM
BIOS: Award

First board from Tyan to support 75 and 83 MHz bus speeds (60-83 is the full range). It has 512 KB L2 cache onboard. CPU core voltage support ranges from 2.0V up to 3.5V in 0.1V steps. Performance on a pre-release version of this board: of all CPUs running at 66 MHz bus clock is quite bad. 75 and 83 MHz are extremly unstable as well. Neither the M2 at 187 MHz nor AMDs K6 at 250 MHz were reliable. The quality of this Baby AT board is very good as always. Very cool is the amount of memory slots. 6x PS/2 and 2x DIMM are waiting to be equipped. But in most cases it is not very clever to equip the 430TX chipset with more than 64 MB, since more can't be 'cached'. The board's layout is excellent, I think it could be worth waiting for the final revision when performance will be much better - let us hope so.

S1590S

Year: 1997 ?
Type: Super Socket 7
Form Factor: ATX ?
Chipset: VIA MVP3
Slots:
Memory:

Does not support AMD K6-2+ and K6-III+ CPUs.