I tried a search but I didn't find anything resembling my question.
I have an Asus Pro61SF laptop with 2x2GB of pc2-6400 ram, which should be capable of 400MHz dram / memory bus speed, however, my system is only running at 333.3MHz. Any ideas why this might be? CPUZ info below:
CPU Name Intel Mobile Core 2 Duo T6500 Codename Penryn Specification Intel(R) Core(TM)2 Duo CPU T6500 @ 2.10GHz
Chipset Northbridge SiS 671/FX/DX/MX rev. 00 Southbridge SiS 968 rev. 01 Graphic Interface PCI-Express PCI-E Link Width x16 PCI-E Max Link Width x16 Memory Type DDR2 Memory Size 4096 MBytes Channels Single Memory Frequency 333.4 MHz (6:10) CAS# latency (CL) 5.0 RAS# to CAS# delay (tRCD) 5 RAS# Precharge (tRP) 5 Cycle Time (tRAS) 15
Memory SPD DIMM # 1 SMBus address 0x50 Memory type DDR2 Module format SO-DIMM Manufacturer (ID) Nanya Technology (7F7F7F0B00000000) Size 2048 MBytes Max bandwidth PC2-6400 (400 MHz) Part number NT2GT64U8HD0BN-AD Serial number 4D752712 Manufacturing date Week 25/Year 09 Number of banks 2 Data width 64 bits Correction None Nominal Voltage 1.80 Volts EPP no XMP no JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency JEDEC #1 4.0-4-4-12-16 @ 266 MHz JEDEC #2 5.0-5-5-15-20 @ 333 MHz JEDEC #3 6.0-6-6-18-24 @ 400 MHz
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Does your motherboard really support ddr2 400?
It's an asus gaming laptop, and using ddr2, so I assumed it would run ddr2 at 800MHz. How can I test if it is not?