3100/3300

3100/3300

3100 & 3300 Series

A Clevo 3100 differs from a 3300 in only in the outer plastic case design, under the skin a 3100 and a 3300 both share the same electronics. So we will call them all 3100's on this page. However, the "B" versions do differ from the "C" versions in the type of CPU socket that is used. So you do need to know which motherboard type it is that in your machine before attempting to upgrade the CPU.

These laptops have been resold by Brick, Eurocom, Prostar, Sager, CVT and the many other reseller brands.

Identification of the motherboard can be determined by lifting the keyboard and looking on the left side of the motherboard. Look for 71-31(B orC)-D0x s to determine the motherboard type and revision level. The "dash" D0x number is the revision - D04 was that last revision, I believe.

Data Common to all 3100's

Two memory sockets are located under the keyboard and are 144 pin SODIMM type. Memory is limited to 512MB, I believe. It is necessary to release the keyboard to install memory - press the two release bars located along the back-side of the keyboard and the rear edge can be lifted up and reveal the memory sockets.

CMOS backup battery is a 2032 Li battery and needs to be replaced every few years or the CMOS setup data and clock fuction will be lost when the laptop is turned off. To replace this battery you need to remove the top half of the main case - or nearly completely field strip the laptop to get to the battery socket. Not a great design feature! If for any reason you open your 3100 up for any sort of repair work, do replace the CMOS battery at the same time and save yourself some later effort.

Heatsinks come in "old" and new" types. The two heatsinks differ only in the method of securing the heatsink to the motherboard. Old type has four screws that are firmly tightened down, but not too tight or the heatsink may bend around the CPU and create other problems. The new heatsink is held in place with spring-loaded screws and the springs hold the heatsink against the CPU - so overtorque is prevented.

AC adapters are a 20 volt type and I do carry the original 20 volt adapter in stock. However, I believe that a more common 19 volt adapter should work just fine as long as the current rating is correct.

3100B & 3300B

As with most Clevo laptops the motherboard have undergone several minor revisions and each revision may have its own limitations. The revision number will be the "D0x" dash number after the base number that identifies the 3100B motherboard. All "B" motherboards are micro-PGA motherboards supporting both Celeron and P3 CPU's in this form factor, but the CPU's must have a 66 MHz main front side bus speed. (FSB) The maximum CPU speed is limited to about 750 MHz, I believe.

It is interesting that the thermal pad on the CPU heatsink, as supplied by the factory, is a one time use pad. (Heatsink is so marked) If in doubt that the pad is working then replace it or coat it with good heatsink compound. In fact, most CPU's will run cooler if you go ahead and replace the factory pad with a good heatsink compound.

3100C & 3300C

The "C" Motherboard differs from the above "B" motherboards only in the type of CPU module used. As with most Clevo laptops the motherboard have undergone several minor revisions and each revision may have its own limitations. The revision number will be the "D0x" dash number after the base number that identifies the 3100C motherboard. All "C" laptops have Socket 370 motherboards supporting both Celeron and P3 CPU's. The CPU's must have a 66 MHz main front side bus speed (FSB) and the maximum CPU speed is limited to about 800 MHz, I believe.