Hi everybody,
I have an LGA775 motherboard. it's a board from Lenovo ThinkCentre A53 system, it is called L-S662F. The motherboard officially supports Pentium/Celeron D and Pentium 4 CPUs. Actually I have a Celeron D 346 installed but this CPU is really a crap so I'm thinking to upgrade with something better; a dual-core CPU would be great. But I would like to avoid the old Netburst architecture of Pentium D, they goes hot and are power consuming, so I was wondering if I could install a Core 2 Duo, an E4300 for example, since the board has SiS662 chipset that is compatible with these processors. So, I searched for a BIOS upgrade and I found the latest at Lenovo site. In the release note of the BIOS is stated that a previous release of the bios brought support for "Core CPU". This is just the info I wanted to know and it seems to be good news, but as wikipedia states:
So I have a motherboard with a compatible chipset and more likely with the right BIOS to support a Core 2 Duo but I dont' know if the power supply circuit is designed also to support these CPUs. I made some googling and I found some encouraging clues, like the fact the board uses polymer solid-state caps (I don't know if it is significant but I found these caps on all C2D motherboards) and has 4-phase controller, the >>ADP3198<<, which I found on many C2D board as well.
I took a picture of the CPU layout of the board. It is a 3-phase power design with Fujitsu caps:
Now, you might notice that if does exist a BIOS that supports C2D CPUs that's would be enough to prove there is a compatibility. Since I want to be as much sure as I can first to buy a new processor, I want to ask here if someone could give me any help.
Many many thanks
I have an LGA775 motherboard. it's a board from Lenovo ThinkCentre A53 system, it is called L-S662F. The motherboard officially supports Pentium/Celeron D and Pentium 4 CPUs. Actually I have a Celeron D 346 installed but this CPU is really a crap so I'm thinking to upgrade with something better; a dual-core CPU would be great. But I would like to avoid the old Netburst architecture of Pentium D, they goes hot and are power consuming, so I was wondering if I could install a Core 2 Duo, an E4300 for example, since the board has SiS662 chipset that is compatible with these processors. So, I searched for a BIOS upgrade and I found the latest at Lenovo site. In the release note of the BIOS is stated that a previous release of the bios brought support for "Core CPU". This is just the info I wanted to know and it seems to be good news, but as wikipedia states:
Although a motherboard may have the required chipset to support Conroe, some motherboards based on the above-mentioned chipsets do not support Conroe. This is because all Conroe-based processors require a new power delivery feature set specified in >>Voltage Regulator-Down (VRD) 11.0<<. This requirement is a result of Conroe's significantly lower power consumption, compared to the Pentium 4/D CPUs it is replacing. A motherboard that has both a supporting chipset and VRD 11 supports Conroe processors, but even then some boards will need an updated BIOS to recognize Conroe's FID (Frequency ID) and VID (Voltage ID).
I took a picture of the CPU layout of the board. It is a 3-phase power design with Fujitsu caps:
Now, you might notice that if does exist a BIOS that supports C2D CPUs that's would be enough to prove there is a compatibility. Since I want to be as much sure as I can first to buy a new processor, I want to ask here if someone could give me any help.
Many many thanks
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