- Feb 18, 2010
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I have 4 DDR2 memory sticks that I need to distribute across 2 computers.
I'll list the sticks specs transcribed from Speccy and then I'll tell you what I think is the best set-up. Hopefully you will be willing to help and either confirm my guess or give me the appropriate one.
RAM sticks specifications:
It seams the forum deletes the tab spacing so I also uploaded a .txt file of the specs here
Preferably I'd like to be able to use dual-channel in both. And have one with 2GB and the other with 1GB.
From my little knowledge on the subject, the ideal set up would be:
PC1: stick1+2
PC2: stick3+4
this would make both dual-channel but PC2 would have slightly slower RAM speed because one of the sticks would force the set to use PC2-4300 - 266 MHz speed (not sure about this).
So a few questions:
1. Are my set up and assumptions correct?
2. To put sticks in dual-channel I use the two identically colored slots and not the ones that are closer together but have different color, right?
3. Do I need to do anything in the bios or the OS to activate dual-channel?
Thanks in advance if you decide to help me out.
I'll list the sticks specs transcribed from Speccy and then I'll tell you what I think is the best set-up. Hopefully you will be willing to help and either confirm my guess or give me the appropriate one.
RAM sticks specifications:
stick1:
Type DDR2
Size 1024 MBytes
Channels # Single
DRAM Frequency 332.5 MHz
CAS# Latency (CL) 5 clocks
RAS# to CAS# Delay (tRCD) 5 clocks
RAS# Precharge (tRP) 5 clocks
Cycle Time (tRAS) 15 clocks
Bank Cycle Time (tRC) 21 clocks
Type DDR2
Size 1024 MBytes
Manufacturer Ramaxel Technology
Max Bandwidth PC2-5300 (333 MHz)
Part Number RML1320EG38D7W-667
SPD Ext. EPP
JEDEC #3
Frequency 333.3 MHz
CAS# Latency 5.0
RAS# To CAS# 6
RAS# Precharge 6
tRAS 16
tRC 21
Voltage 1.800 V
JEDEC #2
Frequency 266.7 MHz
CAS# Latency 4.0
RAS# To CAS# 4
RAS# Precharge 4
tRAS 12
tRC 16
Voltage 1.800 V
JEDEC #1
Frequency 200.0 MHz
CAS# Latency 3.0
RAS# To CAS# 3
RAS# Precharge 3
tRAS 9
tRC 12
Voltage 1.800 V
stick2:
Type DDR2
Size 1024 MBytes
Channels # Single
DRAM Frequency 334.4 MHz
CAS# Latency (CL) 5 clocks
RAS# to CAS# Delay (tRCD) 5 clocks
RAS# Precharge (tRP) 5 clocks
Cycle Time (tRAS) 15 clocks
Bank Cycle Time (tRC) 21 clocks
Type DDR2
Size 1024 MBytes
Manufacturer Kingston
Max Bandwidth PC2-5300 (333 MHz)
Part Number 99U5316-010.A00LF
Serial Number 6C394C7C
Week/year 30 / 07
SPD Ext. EPP
JEDEC #3
Frequency 333.3 MHz
CAS# Latency 5.0
RAS# To CAS# 6
RAS# Precharge 6
tRAS 16
tRC 21
Voltage 1.800 V
JEDEC #2
Frequency 266.7 MHz
CAS# Latency 4.0
RAS# To CAS# 4
RAS# Precharge 4
tRAS 12
tRC 16
Voltage 1.800 V
JEDEC #1
Frequency 200.0 MHz
CAS# Latency 3.0
RAS# To CAS# 3
RAS# Precharge 3
tRAS 9
tRC 12
Voltage 1.800 V
(I installed sticks 3 and 4 together so the specs are missing the upper part)
stick3:
Type DDR2
Size 512 MBytes
Manufacturer Transcend Information
Max Bandwidth PC2-5300 (333 MHz)
Part Number JM667QLJ-512M
Serial Number 0007AB4D
Week/year 35 / 07
SPD Ext. EPP
JEDEC #3
Frequency 333.3 MHz
CAS# Latency 5.0
RAS# To CAS# 6
RAS# Precharge 6
tRAS 16
tRC 21
Voltage 1.800 V
JEDEC #2
Frequency 266.7 MHz
CAS# Latency 4.0
RAS# To CAS# 4
RAS# Precharge 4
tRAS 12
tRC 16
Voltage 1.800 V
JEDEC #1
Frequency 200.0 MHz
CAS# Latency 3.0
RAS# To CAS# 3
RAS# Precharge 3
tRAS 9
tRC 12
Voltage 1.800 V
stick4:
Type DDR2
Size 512 MBytes
Manufacturer Samsung
Max Bandwidth PC2-4300 (266 MHz)
Part Number M3 78T6553CZ3-CD5
Serial Number F201AF63
Week/year 39 / 05
SPD Ext. EPP
JEDEC #3
Frequency 266.7 MHz
CAS# Latency 5.0
RAS# To CAS# 4
RAS# Precharge 4
tRAS 11
tRC 15
Voltage 1.800 V
JEDEC #2
Frequency 266.7 MHz
CAS# Latency 4.0
RAS# To CAS# 4
RAS# Precharge 4
tRAS 11
tRC 15
Voltage 1.800 V
JEDEC #1
Frequency 200.0 MHz
CAS# Latency 3.0
RAS# To CAS# 3
RAS# Precharge 3
tRAS 8
tRC 11
Voltage 1.800 V
Type DDR2
Size 1024 MBytes
Channels # Single
DRAM Frequency 332.5 MHz
CAS# Latency (CL) 5 clocks
RAS# to CAS# Delay (tRCD) 5 clocks
RAS# Precharge (tRP) 5 clocks
Cycle Time (tRAS) 15 clocks
Bank Cycle Time (tRC) 21 clocks
Type DDR2
Size 1024 MBytes
Manufacturer Ramaxel Technology
Max Bandwidth PC2-5300 (333 MHz)
Part Number RML1320EG38D7W-667
SPD Ext. EPP
JEDEC #3
Frequency 333.3 MHz
CAS# Latency 5.0
RAS# To CAS# 6
RAS# Precharge 6
tRAS 16
tRC 21
Voltage 1.800 V
JEDEC #2
Frequency 266.7 MHz
CAS# Latency 4.0
RAS# To CAS# 4
RAS# Precharge 4
tRAS 12
tRC 16
Voltage 1.800 V
JEDEC #1
Frequency 200.0 MHz
CAS# Latency 3.0
RAS# To CAS# 3
RAS# Precharge 3
tRAS 9
tRC 12
Voltage 1.800 V
stick2:
Type DDR2
Size 1024 MBytes
Channels # Single
DRAM Frequency 334.4 MHz
CAS# Latency (CL) 5 clocks
RAS# to CAS# Delay (tRCD) 5 clocks
RAS# Precharge (tRP) 5 clocks
Cycle Time (tRAS) 15 clocks
Bank Cycle Time (tRC) 21 clocks
Type DDR2
Size 1024 MBytes
Manufacturer Kingston
Max Bandwidth PC2-5300 (333 MHz)
Part Number 99U5316-010.A00LF
Serial Number 6C394C7C
Week/year 30 / 07
SPD Ext. EPP
JEDEC #3
Frequency 333.3 MHz
CAS# Latency 5.0
RAS# To CAS# 6
RAS# Precharge 6
tRAS 16
tRC 21
Voltage 1.800 V
JEDEC #2
Frequency 266.7 MHz
CAS# Latency 4.0
RAS# To CAS# 4
RAS# Precharge 4
tRAS 12
tRC 16
Voltage 1.800 V
JEDEC #1
Frequency 200.0 MHz
CAS# Latency 3.0
RAS# To CAS# 3
RAS# Precharge 3
tRAS 9
tRC 12
Voltage 1.800 V
(I installed sticks 3 and 4 together so the specs are missing the upper part)
stick3:
Type DDR2
Size 512 MBytes
Manufacturer Transcend Information
Max Bandwidth PC2-5300 (333 MHz)
Part Number JM667QLJ-512M
Serial Number 0007AB4D
Week/year 35 / 07
SPD Ext. EPP
JEDEC #3
Frequency 333.3 MHz
CAS# Latency 5.0
RAS# To CAS# 6
RAS# Precharge 6
tRAS 16
tRC 21
Voltage 1.800 V
JEDEC #2
Frequency 266.7 MHz
CAS# Latency 4.0
RAS# To CAS# 4
RAS# Precharge 4
tRAS 12
tRC 16
Voltage 1.800 V
JEDEC #1
Frequency 200.0 MHz
CAS# Latency 3.0
RAS# To CAS# 3
RAS# Precharge 3
tRAS 9
tRC 12
Voltage 1.800 V
stick4:
Type DDR2
Size 512 MBytes
Manufacturer Samsung
Max Bandwidth PC2-4300 (266 MHz)
Part Number M3 78T6553CZ3-CD5
Serial Number F201AF63
Week/year 39 / 05
SPD Ext. EPP
JEDEC #3
Frequency 266.7 MHz
CAS# Latency 5.0
RAS# To CAS# 4
RAS# Precharge 4
tRAS 11
tRC 15
Voltage 1.800 V
JEDEC #2
Frequency 266.7 MHz
CAS# Latency 4.0
RAS# To CAS# 4
RAS# Precharge 4
tRAS 11
tRC 15
Voltage 1.800 V
JEDEC #1
Frequency 200.0 MHz
CAS# Latency 3.0
RAS# To CAS# 3
RAS# Precharge 3
tRAS 8
tRC 11
Voltage 1.800 V
Preferably I'd like to be able to use dual-channel in both. And have one with 2GB and the other with 1GB.
From my little knowledge on the subject, the ideal set up would be:
PC1: stick1+2
PC2: stick3+4
this would make both dual-channel but PC2 would have slightly slower RAM speed because one of the sticks would force the set to use PC2-4300 - 266 MHz speed (not sure about this).
So a few questions:
1. Are my set up and assumptions correct?
2. To put sticks in dual-channel I use the two identically colored slots and not the ones that are closer together but have different color, right?
3. Do I need to do anything in the bios or the OS to activate dual-channel?
Thanks in advance if you decide to help me out.
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