Acer Aspire V3-571G-9686 memory upgradability

Hello,

I bought about 1 1/2 year ago a Acer Aspire V3-571G-9686. It came with 6GB of RAM setup this way:

Information SPD EEPROM (DIMM0)

Manufacturer  : ston

Part Number  : 56X64D3S13C9G

Serial Number  : 146718E64C0018E4

Type  : -SDRAM 10700 (667 MHz)  -  [DDR3-1333]

Format  : IMM (67,6 x 15)

Size  : 2048  MB (1 ranks, 8 banks)

Module Buffered  : No

Module Registered  : No

Module SLi Ready (EPP)  : No

Module XMP  : No

Module XMP 2.0  : No

Width  : 64-bit

Error Correction Capability (ECC)  : Unspecified

Prefetch Buffer  : 8-bit

Manufacture  : Week 10 of 2012

Thermal Sensor  : No

Heat Spreader  : Yes

Supported Frequencies  : 381 MHz, 457 MHz, 533 MHz, 610 MHz, 686 MHz

CAS Latency (tCL)  : 5 clocks @ 381 MHz, 6 clocks @ 457 MHz, 7 clocks @ 533 MHz, 8 clocks @ 610 MHz, 9 clocks @ 686 MHz

RAS to CAS (tRCD)  : 5 clocks @ 381 MHz, 6 clocks @ 457 MHz, 7 clocks @ 533 MHz, 8 clocks @ 610 MHz, 9 clocks @ 686 MHz

RAS Precharge (tRP)  : 5 clocks @ 381 MHz, 6 clocks @ 457 MHz, 7 clocks @ 533 MHz, 8 clocks @ 610 MHz, 9 clocks @ 686 MHz

Cycle Time (tRAS)  : 14 clocks @ 381 MHz, 17 clocks @ 457 MHz, 20 clocks @ 533 MHz, 22 clocks @ 610 MHz, 25 clocks @ 686 MHz

Min TRC  : 19 clocks @ 381 MHz, 23 clocks @ 457 MHz, 27 clocks @ 533 MHz, 30 clocks @ 610 MHz, 34 clocks @ 686 MHz

-------------------------

Information SPD EEPROM (DIMM1)

Manufacturer  : ta Technology

Part Number  : I1C1674EV

Serial Number  : 000018E64C0018E4

Type  : -SDRAM 10700 (667 MHz)  -  [DDR3-1333]

Format  : IMM (67,6 x 15)

Size  : 4096  MB (2 ranks, 8 banks)

Module Buffered  : No

Module Registered  : No

Module SLi Ready (EPP)  : No

Module XMP  : No

Module XMP 2.0  : No

Width  : 64-bit

Error Correction Capability (ECC)  : Unspecified

Prefetch Buffer  : 8-bit

Manufacture  : Week 23 of 2012

Thermal Sensor  : No

Heat Spreader  : Yes

Supported Frequencies  : 381 MHz, 457 MHz, 533 MHz, 610 MHz, 686 MHz

CAS Latency (tCL)  : 5 clocks @ 381 MHz, 6 clocks @ 457 MHz, 7 clocks @ 533 MHz, 8 clocks @ 610 MHz, 9 clocks @ 686 MHz

RAS to CAS (tRCD)  : 5 clocks @ 381 MHz, 6 clocks @ 457 MHz, 7 clocks @ 533 MHz, 8 clocks @ 610 MHz, 9 clocks @ 686 MHz

RAS Precharge (tRP)  : 5 clocks @ 381 MHz, 6 clocks @ 457 MHz, 7 clocks @ 533 MHz, 8 clocks @ 610 MHz, 9 clocks @ 686 MHz

Cycle Time (tRAS)  : 14 clocks @ 381 MHz, 17 clocks @ 457 MHz, 20 clocks @ 533 MHz, 22 clocks @ 610 MHz, 25 clocks @ 686 MHz

Min TRC  : 19 clocks @ 381 MHz, 23 clocks @ 457 MHz, 27 clocks @ 533 MHz, 30 clocks @ 610 MHz, 34 clocks @ 686 MHz

------------------

So, it is one module of 2GB and other of 4GB. Different manufacture.

My question is:

What are the maximum size (GB) and speed (MHZ) that this notebook supports? And I have to upgrade with two modules of same size or can I have 1 module with the maximum size allowed? For example, 2x4GB or 1x8GB?

Thank you in advance for any help.

Regards.