- Joined
- Dec 11, 2002
- Location
- Ankara/Turkey
Hi,
I have an Asus P3C-E Slot 1 mobo and it has a i820 chipset and have tried to run Tualatin CPU's like BX mobos and find a better and easier way for both! (Maybe for non-tualatin based 810 and 815 chipset based ones too, I couldn't test, but you may try it...)
We only need to insulate 7 pins. No need to bridge AK4 on the CPU. I used an Asus S370-DL adapter. The pins should be insulated are: AN3, AK4, AJ3, AG1, X4, AB36 and X34. To insulate you can use single wire telephone box type cable, by pulling the copper wire in it, to use the plastic protector for the pin isolator, without widening the holes, which is easier. You can cut the plastic protector at the same hight of the CPU pins. (Don't worry, they are not shot-circuting.) Basicly insert the cable to the pin and cut it with a model knife, from the upper surface of the pins. After some time, if you remove the CPU, those plastic parts stays inside the 370 Socket, I have inserted the CPU several times without doing the insulation work again and again. (To see this, don't immidately remove the CPU, close the arm, run the processor some time, then... remove it. The heat and the pin holder reshapes the plastic protector to make this happen.) But if you mistakenly drop the plastic parts to the 370 Socket, use your model knife to push from the 4 holding guides from top (by inserting the knife througly in it) and hold upwards 4 of the upper part guides one by one, starting from the opposite side of the removing arm.
Detail is here: AG1 and X34 are VCC on S370-DL adapter, but VTT on the tualatin CPU. AJ3 and X4 are GND on S370-DL adaptor but RESET2# and GND on the CPU, however AH4 and X4 are connected as RESET on the S370-DL adaptor therefore X4 needs to be insulated. As you know AK4 doesn't have to touch GND and thus needs to be insulated like DYN_OE on AN3. Lastly AB36 is safer to insulate which decreases the mobo and CPU temperature about 5'C degrees that, V_CMOS signal is unnecessary to connect to VTT.
OK, I have manged to run a Celeron 1100A at 1466MHZ very stable. Mine was a tA1 stepping one and works with 1.475Volts. Therfore I need to adjust the Voltage jumper to 1.5Volt over the S370-DL adapter. If your CPU works with 1.5 Volts, you may set it to Auto Detect. 1.45Volt based P3-S type 512kB cache based Tualatin CPU's may also accept to run with Auto Detect. But 1.475Volt ones MUST have to be adjusted to 1.5Volt over the S370-DL manually. This is related with VRM 8.4 and 8.5 spec. difference. If you don't have an Asus S370-DL adapter and no have an on board Voltage adjustment jumper down to 1.5Volts, then don't buy 1.475Volt CPU's or make yourself a vid pin Voltage adaper.
I have a Celeron 1400 CPU too, which works with 1.5Volts and manage to run it with an OEM SUPER SLOCKET-III type Chinese adapter, but it crashed several times although I run it at normal 1400Mhz. My bios suprisingly displayed a P2 1200Mhz processor on the post screen with both of the adapters. But I have tested it with WCPUID and SiSoft Sandra 2003, they both said it is a 1400Mhz processor. (Exactly 1413.21Mhz) This is because of the non-tualatin based bios. I have overclocked it to 103, 105 and 107Mhz but this time it displayed 1442, 1470 and 1499Mhz processor at the post screen truely. I didn't pushed it more, maybe it goes true 109 and 112? Celeron 1100A displayed OK at the post screen when running it at it's original speed. I wonder why it did, but 1400 didn't, according to my latest 1025 beta 2 build bios? Both the CPU's are tA1 and Philippines manufacture.
I want to add last couple of things for today. If you have another type, other than S370-DL adapter, check the following things to make sure.
-G36 is VTT and generally G37 is left open. If it is not connected to anywhere else, connect it to G36 for better VTT performance.
-AM2 is KEY pin on Tualatins but generally not used on Socket 370's. If it is connected to anywhere else, insulate that pin too.
To check the connections, use a beeping testmeter at, for example 200 ohm switch. To make sure, it is not indirectly connected. If it beeps and displays around 2 or 3 ohms, this means it is directly connected and, 10 to 50 ohms or up means it is connected via the on board components, which also means it is connected too.
I am a Moslem and Turkish man, but happy new chistmas to you all from Ankara. I hope the new year brings peace at last...
I have an Asus P3C-E Slot 1 mobo and it has a i820 chipset and have tried to run Tualatin CPU's like BX mobos and find a better and easier way for both! (Maybe for non-tualatin based 810 and 815 chipset based ones too, I couldn't test, but you may try it...)
We only need to insulate 7 pins. No need to bridge AK4 on the CPU. I used an Asus S370-DL adapter. The pins should be insulated are: AN3, AK4, AJ3, AG1, X4, AB36 and X34. To insulate you can use single wire telephone box type cable, by pulling the copper wire in it, to use the plastic protector for the pin isolator, without widening the holes, which is easier. You can cut the plastic protector at the same hight of the CPU pins. (Don't worry, they are not shot-circuting.) Basicly insert the cable to the pin and cut it with a model knife, from the upper surface of the pins. After some time, if you remove the CPU, those plastic parts stays inside the 370 Socket, I have inserted the CPU several times without doing the insulation work again and again. (To see this, don't immidately remove the CPU, close the arm, run the processor some time, then... remove it. The heat and the pin holder reshapes the plastic protector to make this happen.) But if you mistakenly drop the plastic parts to the 370 Socket, use your model knife to push from the 4 holding guides from top (by inserting the knife througly in it) and hold upwards 4 of the upper part guides one by one, starting from the opposite side of the removing arm.
Detail is here: AG1 and X34 are VCC on S370-DL adapter, but VTT on the tualatin CPU. AJ3 and X4 are GND on S370-DL adaptor but RESET2# and GND on the CPU, however AH4 and X4 are connected as RESET on the S370-DL adaptor therefore X4 needs to be insulated. As you know AK4 doesn't have to touch GND and thus needs to be insulated like DYN_OE on AN3. Lastly AB36 is safer to insulate which decreases the mobo and CPU temperature about 5'C degrees that, V_CMOS signal is unnecessary to connect to VTT.
OK, I have manged to run a Celeron 1100A at 1466MHZ very stable. Mine was a tA1 stepping one and works with 1.475Volts. Therfore I need to adjust the Voltage jumper to 1.5Volt over the S370-DL adapter. If your CPU works with 1.5 Volts, you may set it to Auto Detect. 1.45Volt based P3-S type 512kB cache based Tualatin CPU's may also accept to run with Auto Detect. But 1.475Volt ones MUST have to be adjusted to 1.5Volt over the S370-DL manually. This is related with VRM 8.4 and 8.5 spec. difference. If you don't have an Asus S370-DL adapter and no have an on board Voltage adjustment jumper down to 1.5Volts, then don't buy 1.475Volt CPU's or make yourself a vid pin Voltage adaper.
I have a Celeron 1400 CPU too, which works with 1.5Volts and manage to run it with an OEM SUPER SLOCKET-III type Chinese adapter, but it crashed several times although I run it at normal 1400Mhz. My bios suprisingly displayed a P2 1200Mhz processor on the post screen with both of the adapters. But I have tested it with WCPUID and SiSoft Sandra 2003, they both said it is a 1400Mhz processor. (Exactly 1413.21Mhz) This is because of the non-tualatin based bios. I have overclocked it to 103, 105 and 107Mhz but this time it displayed 1442, 1470 and 1499Mhz processor at the post screen truely. I didn't pushed it more, maybe it goes true 109 and 112? Celeron 1100A displayed OK at the post screen when running it at it's original speed. I wonder why it did, but 1400 didn't, according to my latest 1025 beta 2 build bios? Both the CPU's are tA1 and Philippines manufacture.
I want to add last couple of things for today. If you have another type, other than S370-DL adapter, check the following things to make sure.
-G36 is VTT and generally G37 is left open. If it is not connected to anywhere else, connect it to G36 for better VTT performance.
-AM2 is KEY pin on Tualatins but generally not used on Socket 370's. If it is connected to anywhere else, insulate that pin too.
To check the connections, use a beeping testmeter at, for example 200 ohm switch. To make sure, it is not indirectly connected. If it beeps and displays around 2 or 3 ohms, this means it is directly connected and, 10 to 50 ohms or up means it is connected via the on board components, which also means it is connected too.
I am a Moslem and Turkish man, but happy new chistmas to you all from Ankara. I hope the new year brings peace at last...
