Point is to connect the Turbo LED so it lights up when you turn on the computer.

dempsey wrote on 2024-09-07, 07:57:

what on earth is the point of having connections for connecting a Turbo LED when you can't toggle the Turbo!?

I agree with Dominus it's almost certainly too new for that, but you don't necessarily need a mechanical switch for turbo - button combos on boot, button combos at any time (if the BIOS's native keyboard driver is still in use), dedicated programs that write something to a certain port, and a plain setting in the configuration utility all have been done before 😀

And of course, the placebo effect aka my friend playing Metin2 on a Pentium 4 asking me to hold the turbo button pushed in 😁

Ryccardo wrote on 2024-09-07, 11:39:

dempsey wrote on 2024-09-07, 07:57:

what on earth is the point of having connections for connecting a Turbo LED when you can't toggle the Turbo!?

I agree with Dominus it's almost certainly too new for that, but you don't necessarily need a mechanical switch for turbo - button combos on boot, button combos at any time (if the BIOS's native keyboard driver is still in use), dedicated programs that write something to a certain port, and a plain setting in the configuration utility all have been done before 😀

And of course, the placebo effect aka my friend playing Metin2 on a Pentium 4 asking me to hold the turbo button pushed in 😁

Ok -this makes sense, so some kind of button-combo could turn the Turbo ON/OFF - its a shame the board is apparently not so known, there is almost no information about it - I only have a few pages concerning jumpers, I haven't been able to find the manual.

dempsey wrote on 2024-09-07, 12:13:

Ryccardo wrote on 2024-09-07, 11:39:

dempsey wrote on 2024-09-07, 07:57:

what on earth is the point of having connections for connecting a Turbo LED when you can't toggle the Turbo!?

I agree with Dominus it's almost certainly too new for that, but you don't necessarily need a mechanical switch for turbo - button combos on boot, button combos at any time (if the BIOS's native keyboard driver is still in use), dedicated programs that write something to a certain port, and a plain setting in the configuration utility all have been done before 😀

And of course, the placebo effect aka my friend playing Metin2 on a Pentium 4 asking me to hold the turbo button pushed in 😁

Ok -this makes sense, so some kind of button-combo could turn the Turbo ON/OFF - its a shame the board is apparently not so known, there is almost no information about it - I only have a few pages concerning jumpers, I haven't been able to find the manual.

funny - I just googled Chaintech and turbo, and found this about another Chaintech board, maybe it's the same with my board, I will have to test this later today 😀

"Like the other two new Chaintech TX motherboards, the 5TTL allows you to switch among two different CPU settings on-the-fly! If the user enters in the following keystroke combination while the computer is running: [CTRL][ALT][-] the motherboard will automatically put the CPU into a de-turbo mode, which is incredibly useful especially when running those old 286/386 programs on your new high speed Socket-7 system. By striking [CTRL][ALT][+] the motherboard is placed back into the turbo mode so you can return to your computer to its normal operation state."

Common key combos for turbo include:
* Ctrl-Alt-+ and - (try both on numpad and main keyset)
* Ctrl-Alt-/ or \
* Ctrl-Alt-PgUp or PgDn
* Ctrl-Alt-F[1,2] or F[11,12]

Try it while SysInfo is running the CPU benchmark to immediatelly know when you get the right combo.

wbahnassi wrote on 2024-09-07, 13:43:

Common key combos for turbo include: * Ctrl-Alt-+ and - (try both on numpad and main keyset) * Ctrl-Alt-/ or \ * Ctrl-Alt-PgUp o […]
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Common key combos for turbo include:
* Ctrl-Alt-+ and - (try both on numpad and main keyset)
* Ctrl-Alt-/ or \
* Ctrl-Alt-PgUp or PgDn
* Ctrl-Alt-F[1,2] or F[11,12]

Try it while SysInfo is running the CPU benchmark to immediatelly know when you get the right combo.

great idea to use sysinfo at the same time - thanks 😀

Many late Baby AT boards (from Pentium onwards) included a turbo LED header so you would have a way to connect the Turbo LED of your old case, even if the newer chipsets didn't support a speed switch as 486 and earlier did. In this case the turbo LED would stay on all the time, serving no practical purpose. But I guess in these later boards you could also connect the turbo switch to the bus speed or multiplier jumpers in order to have a fake turbo feature, although it would probably only work properly if you press the switch while the computer is off.

Yes. Switching FSB speed during operation usually causes a hang except in a few rare cases... interestingly, SysInfo is one of them! My socket 7 mobo has a turbo switch header, and the manual explicitly says to not engage the switch while the PC is on. Obviously, I immediatelly tried it while the PC is on 😅 It modifies the FSB speed, and causes a P90 to become P75, and even the BIOS will report the CPU as P75, so it's a standard FSB speed switch.