It is CORSAIR DOMINATOR 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel.
I am pretty new to upgrading computers, first of all. So this is what I did: I pulled the old 1g sticks and put these ones in, turned on the computer and checked the system properties in Windows. That’s all I thought you had to do.
It reports the 4g of RAM, but CPU-Z is showing max bandwidth of PC2-6400 (400 MH). That’s definitely not what I paid for.
Any idea how to resolve this?
Here are my specs:
Intel Core 2 Quad Q6600 @2.4g
Asus P5N-E SLI motherboard (With latest BIOS installed that they told me could run PC-8500)
Nvidia GeForce 8800 GTS
Windows Vista SP1 32bit
And then now this new RAM.
if CPU-Z is showing 533mhz as the memory speed then its running at the stated 1066mhz because DDR doubles the bus speed of the RAM e.g DDR 800 runs @ 400, DDR-667 @ 333.3, DDR-533 @ 266, 1066 @ 533, 900 @ 450)
Check the ram settings in BIOS, they might be set to AUTO, you should set them to match the memory timings; in you case it should look like 5-5-5-18 oh and you might need to change the memory voltage to 2.1V.
don’t worry about it being reported as PC2-6400 if its running at the stated speed without problems. Also it could be a PC2-6400 designed to run at PC2-8500 speeds but its not had its chip info updated.
Well I pulled this info out of the registers dump .txt
Northbridge NVIDIA nForce 650i SLI SPP rev. A2
Southbridge NVIDIA nForce 650i SLI MCP rev. A3
Graphic Interface PCI-Express
PCI-E Link Width x16
PCI-E Max Link Width x16
Memory Type DDR2
Memory Size 4096 MBytes
Channels Dual
Memory Frequency 400.3 MHz (2:3)
CAS# 5.0
RAS# to CAS# 5
RAS# Precharge 5
Cycle Time (tRAS) 15
Bank Cycle Time (tRC) 23
Command Rate 2T
Memory SPD
DIMM #1
General
Memory type DDR2
Module format Regular UDIMM
Manufacturer (ID) Corsair (7F7F9E0000000000)
Size 2048 MBytes
Max bandwidth PC2-6400 (400 MHz)
Part number CM2X2048-8500C5D
Attributes
Number of banks 2
Data width 64 bits
Correction None
Nominal Voltage 1.80 Volts
EPP yes (1 profiles)
XMP no
Timings table
Frequency (MHz) 270 400
CAS# 4.0 5.0
RAS# to CAS# delay 4 5
RAS# Precharge 4 5
TRAS 13 18
TRC 16 23
General
Memory type DDR2
Module format Regular UDIMM
Manufacturer (ID) Corsair (7F7F9E0000000000)
Size 2048 MBytes
Max bandwidth PC2-6400 (400 MHz)
Part number CM2X2048-8500C5D
Attributes
Number of banks 2
Data width 64 bits
Correction None
Nominal Voltage 1.80 Volts
EPP yes (1 profiles)
XMP no
Timings table
Frequency (MHz) 270 400
CAS# 4.0 5.0
RAS# to CAS# delay 4 5
RAS# Precharge 4 5
TRAS 13 18
TRC 16 23