PC wizard gave these results:
General Information :
A0 (RAS 0, RAS 1) : 1024 (Double Bank)
A1 : Empty
A2 (RAS 4, RAS 5) : 1024 (Double Bank)
A3 : Empty
Information SPD EEPROM (A0) :
Manufacturer : OCZ
Part Number : OCZ4001024V3
Serial Number : Unspecified
Type : DDR-SDRAM PC3200 (200 MHz) - [DDR-400]
Size : 1024 MB (2 rows, 4 banks)
Module Buffered : No
Module Registered : No
Width : 64-bit
Error Correction Capability : No
Max. Burst Length : 8
Refresh : Reduced (.5x)7.8 µs, Self Refresh
Voltage : SSTL 2.5v
Manufacture : Week 0 of 2000
Supported Frequencies : 200 MHz
CAS Latency (tCL) : 2.5 clocks @200 MHz
RAS to CAS (tRCD) : 4 clocks @200 MHz
RAS Precharge (tRP) : 4 clocks @200 MHz
Cycle Time (tRAS) : 8 clocks @200 MHz
Information SPD EEPROM (A2) :
Manufacturer : OCZ
Part Number : OCZ4001024V3
Serial Number : Unspecified
Type : DDR-SDRAM PC3200 (200 MHz) - [DDR-400]
Size : 1024 MB (2 rows, 4 banks)
Module Buffered : No
Module Registered : No
Width : 64-bit
Error Correction Capability : No
Max. Burst Length : 8
Refresh : Reduced (.5x)7.8 µs, Self Refresh
Voltage : SSTL 2.5v
Manufacture : Week 0 of 2000
Supported Frequencies : 200 MHz
CAS Latency (tCL) : 2.5 clocks @200 MHz
RAS to CAS (tRCD) : 4 clocks @200 MHz
RAS Precharge (tRP) : 4 clocks @200 MHz
Cycle Time (tRAS) : 8 clocks @200 MHz
Memory Controller Information :
Memory Controller : Standard, SDRAM
Number of connectors : 4
Max. Module Size : 1024 MB
Max. Memory Size : 4096 MB
Supported Speed : 70ns, 60ns, 50ns
Supported Voltages : 2.9v
Error Detection Method : 64-bit ECC
Error Correction Capability : Unspecified
Current/Supported Interleave : 1-way/1-way
Its still running in 64 bit, but the boot screen says 128 bit, is the ram working in dual channel?