These components were aligned to work with the best possible performance in conjunction with low power consumption and quiet operation.

GPU: In all cases the GPU is soldered on the system board and cannot be exchanged.
CPU: The CPU is in almost all cases "socketed" which means the CPU is removable from the system board, which does not mean that the part should be exchanged/upgraded or modified by the customer.

A replacement of that system core component only will be made during a repair in an authorized service center if the component is defective and needs to be replaced. In a case of a defective CPU, it will be replaced with the same part and not with a higher type.

Why an exchange should/can not be performed:

• No significant performance will be gained (Comparison -> price vs. performance)
• It is uncertain if the new CPU is compatible to the system board. The built-in chipsets may support from their technical specifications a wide range of CPUs but this does not imply that all CPU types can be used in a mobile system since the built-in cooling systems were designed individually for each model series to ensure the optimal operation of the machine. A wrong CPU can cause the system to overheat and damage some of the internal system components.
• In most cases the BIOS does not work with the replaced CPU which causes the machine to malfunction. The BIOS must be rewritten after every exchange of a CPU which can be only performed by an Toshiba authorized service partner.
• The immediate revocation of the warranty will be applied if some of the core component were modified by the customer. This applies also when the machine was not disassembled by a Toshiba Certified Engineer.