TODAY'S DDR2 SPECIAL DEALS

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1GB Avant DDR2-400 Registered ECC DIMM Memory
  • Item: AVF7228R52E3400FX
  • Capacity: 1GB
  • Speed: DDR2-400 Registered
$35.60
1GB Avant DDR2-400 Registered ECC DIMM Memory 128x4
  • Item: AVF7228R53E3400FX
  • Capacity: 1GB
  • Speed: DDR2-400 Registered
$37.80
1GB Avant DDR2-400 SO-DIMM Memory
  • Item: AVK6428U52E3400FXd2
  • Capacity: 1GB
  • Speed: DDR2-400 SO-DIMM
$25.65
1GB Avant DDR2-533, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:AVK6428U52E4533FX
  • 1GB DDR2-533 SO-DIMM
  • Laptop Memory
$24.95
1GB Avant DDR2-533, 240-Pin DIMM ECC Unbuffered Memory
  • Item:AVF7228U52E4533FX
  • 1GB DDR2-533 ECC DIMM
  • Desktop Memory
$34.95
1GB Avant DDR2-533, 240-Pin DIMM non-ECC Unbuffered Memory - AVF6428U52E4533FX
  • Item:AVF6428U52E4533FX
  • 1GB DDR2-533 DIMM
  • Desktop Memory
$26.75
1GB Avant DDR2-667 ECC DIMM Memory
  • Item: AVF7228U52E5667FX
  • Capacity: 1GB
  • Speed: DDR2-667 ECC
$27.55
1GB Avant DDR2-667, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:AVK6428U52E5667FX
  • 1GB DDR2-667 SO-DIMM
  • Laptop Memory
$23.95
1GB Avant DDR2-667, 240-Pin DIMM non-ECC Unbuffered Memory - AVF6428U52E5667FX
  • Item:AVF6428U52E5667FX
  • 1GB DDR2-667 DIMM
  • Desktop Memory
$24.95
1GB Avant DDR2-667, 240-Pin FB-DIMM ECC Fully Buffered Memory
  • Item:AVF7228B52E5667FX
  • 1GB DDR2-667 ECC FB-DIMM
  • Desktop Memory
$36.95
1GB Avant DDR2-800, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:AVK6428U61E6800FX
  • 1GB DDR2-800SO-DIMM
  • Laptop Memory
$24.25
1GB Avant DDR2-800, 240-Pin DIMM non-ECC Unbuffered Memory - AVF6428U52E6800FX
  • Item:AVF6428U52E6800FX
  • 1GB DDR2-800 DIMM
  • Desktop Memory
$25.50
1GB iRam DDR2-533, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:IR1GSO533D2
  • 1GB DDR2-533 non-ECC SO-DIMM
  • Apple Tested Memory
$26.60
1GB iRam DDR2-533, 240-Pin DIMM ECC Unbuffered Memory
  • Item IR1GECC533D2
  • 1GB
  • DDR2 533MHz ECC DIMM
$30.45
1GB iRam DDR2-533, 240-Pin DIMM non-ECC Unbuffered Memory
  • Item:IR1G533D2
  • 1GB iRam DDR2-533
  • Timing: 4-4-4
$26.60
1GB iRam DDR2-667, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:IR1GSO667D2
  • 1GB DDR2-667 non-ECC SO-DIMM
  • Apple Tested Memory
$25.20
1GB iRam DDR2-800, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:IR1GSO800D2
  • 1GB DDR2-800 non-ECC SO-DIMM
  • Apple Tested Memory
$25.20
1GB Transcend DDR2-400, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:TS128MSQ64V4J
  • 1GB DDR2-400 SO-DIMM
  • Laptop Memory
More DDR2-400(PC2-3200) Laptops
$40.10
1GB Transcend DDR2-400, 240-Pin DIMM ECC Registered Memory
  • Item:TS128MQR72V4K
  • 1GB DDR2-400 Reg. DIMM
  • Server Memory
$93.60
1GB Transcend DDR2-400, 240-Pin DIMM ECC Registered Memory
  • Item:TS128MQR72V4J
  • 1GB DDR2-400 Reg. DIMM
  • Server Memory
$49.95
1GB Transcend DDR2-533 (PC2-4200) Desktop Memory
  • Item:TS128MLQ64V5J
  • 1GB DDR2 533
  • Timing: 4-4-4
$39.95
1GB Transcend DDR2-533, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:TS128MSQ64V5U
  • 1GB DDR2-533 SO-DIMM
  • Laptop Memory
$29.95
1GB Transcend DDR2-533, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:TS128MSQ64V5J
  • 1GB DDR2-533 SO-DIMM
  • Laptop Memory
$39.95
1GB Transcend DDR2-533, 240-Pin DIMM ECC Unbuffered Memory
  • Item:TS128MLQ72V5J
  • 1GB DDR2 533 ECC DIMM
  • Timing: 4-4-4
$47.40
1GB Transcend DDR2-667, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:TS128MSQ64V6U
  • 1GB DDR2-667 SO-DIMM
  • Laptop Memory
$30.95
1GB Transcend DDR2-667, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:TS128MSQ64V6J
  • 1GB DDR2-667 SO-DIMM
  • Laptop Memory
$38.95
1GB Transcend DDR2-667, 240-Pin DIMM ECC Registered Memory
  • Item:TS128MQR72V6J
  • 1GB DDR2-667 Reg. DIMM
  • Server Memory
$49.95
1GB Transcend DDR2-667, 240-Pin DIMM ECC Unbuffered Memory
  • Item:TS128MLQ72V6U
  • 1GB DDR2-667 ECC DIMM
  • Workstation/Server Memory
$37.25
1GB Transcend DDR2-667, 240-Pin DIMM ECC Unbuffered Memory
  • Item:TS128MLQ72V6J
  • 1GB DDR2-667 ECC DIMM
  • Workstation/Server Memory
$47.65
1GB Transcend DDR2-667, 240-Pin DIMM non-ECC Unbuffered Memory
  • Item:TS128MLQ64V6J
  • 1GB DDR2-667 DIMM
  • Desktop Memory
$38.95
1GB Transcend DDR2-667, 240-Pin DIMM non-ECC Unbuffered Memory
  • Item:TS128MLQ64V6U
  • 1GB DDR2-667 DIMM
  • Desktop Memory
$31.95
1GB Transcend DDR2-667, 240-Pin FB-DIMM ECC Fully Buffered Memory
  • Item:TS128MFB72V6J-T
  • 1GB DDDR2-667 FB-DIMM
  • Server Memory
$68.50
1GB Transcend DDR2-667, 240-Pin FB-DIMM ECC Fully Buffered Memory
  • Item:TS128MFB72V6U-T
  • 1GB DDR2-667 FB-DIMM
  • Server Memory
$58.95
1GB Transcend DDR2-800, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:TS128MSQ64V8W
  • 1GB DDR2-800 SO-DIMM
  • Laptop Memory
$28.95
1GB Transcend DDR2-800, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:TS128MSQ64V8U
  • 1GB DDR2-800 SO-DIMM
  • Laptop Memory
$29.95
1GB Transcend DDR2-800, 240-Pin DIMM ECC Unbuffered Memory
  • Item:TS128MLQ72V8U
  • 1GB DDR2-800 ECC DIMM
  • Workstation/Server Memory
$37.95
1GB Transcend DDR2-800, 240-Pin DIMM non-ECC Unbuffered Memory
  • Item:TS128MLQ64V8U
  • 1GB DDR2-800 DIMM
  • Desktop Memory
$31.95
1GB Transcend DDR2-800, 240-Pin DIMM non-ECC Unbuffered Memory
  • Item:TS128MLQ64V8J
  • 1GB DDR2-800 DIMM
  • Desktop Memory
$38.95
256MB Transcend DDR2-533, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:TS32MSQ64V5M
  • 256MB DDR2-533 SO-DIMM
  • Laptop Memory
$15.25
256MB Transcend DDR2-667, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:TS32MSQ64V6M
  • 256MB DDR2-667 SO-DIMM
  • Laptop Memory
$14.95
2GB Avant DDR2-400, 240-Pin DIMM ECC Registered Memory
  • Item:AVF7256R62E3400FX
  • 2GB DDR2-400 ECC Reg DIMM
  • Desktop Memory
$69.95
2GB Avant DDR2-533, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:AVK6456U61E4533FX
  • 2GB DDR2-533 SO-DIMM
  • Laptop Memory
$42.50
2GB Avant DDR2-533, 240-Pin DIMM ECC Unbuffered Memory
  • Item:AVF7256U61E4533X
  • 2GB DDR2-533 ECC DIMM
  • Desktop Memory
$49.50
2GB Avant DDR2-667 ECC DIMM Memory
  • Item: AVF7256U61E4667FX
  • Capacity: 2GB
  • Speed: DDR2-667 ECC
$49.30
2GB Avant DDR2-667 Registered ECC DIMM Memory 128x4
  • Item: AVF7256R62E5667FX
  • Capacity: 2GB
  • Speed: DDR2-667 Registered
$61.50
2GB Avant DDR2-667 Registered ECC DIMM Memory 128x8
  • Item: AVF7256R61E5667FX
  • Capacity: 2GB
  • Speed: DDR2-667 Registered
$62.50
2GB Avant DDR2-667, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:AVK6456U61E5667FX
  • 2GB DDR2-667 SO-DIMM
  • Laptop Memory
$39.95
2GB Avant DDR2-667, 240-Pin DIMM non-ECC Unbuffered Memory
  • Item:AVF6456U61E5667FX
  • 2GB DDR2-667 DIMM
  • Desktop Memory
$39.95
2GB Avant DDR2-667, 240-Pin FB-DIMM ECC Fully Buffered Memory
  • Item:25672FB667128X4
  • 2GB DDR2-667 FB-DIMM
  • Server Memory
$88.50
2GB Avant DDR2-667, 240-Pin FB-DIMM ECC Fully Buffered Memory
  • Item:AVF7256B61E5667FX-IS
  • 2GB DDR2-667 FB-DIMM
  • Server Memory
$56.55
2GB Avant DDR2-800 ECC DIMM Memory
  • Item: AVF7256U61E6800FX
  • Capacity: 2GB
  • Speed: DDR2-800 ECC
$49.30
2GB Avant DDR2-800 Registered ECC DIMM Memory
  • Item: AVF7256R61E6800FX
  • Capacity: 2GB
  • Speed: DDR2-800 Registered ECC
$63.80
2GB Avant DDR2-800, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:AVK6456U61E6800FX
  • 2GB DDR2-800 SO-DIMM
  • Laptop Memory
$39.95
2GB Avant DDR2-800, 240-Pin DIMM non-ECC Unbuffered Memory
  • Item:AVF6456U61E6800FX
  • 2GB DDR2-800 DIMM
  • Desktop Memory
$37.80
2GB DDR2-533 240-Pin non-ecc unbuffered dimm
$39.95
2GB iRam DDR2-533, 240-pin DIMM ECC Unbuffered Memory
  • Item:IR2GECC533D2
  • 2GB iRam DDR2-533
  • 240-Pin ECC DIMM
$43.40
2GB iRam DDR2-533, 240-Pin DIMM non-ECC Unbuffered Memory
  • Item:IR2G533D2
  • 2GB iRam DDR2-533
  • 240-Pin DIMM
$41.30
2GB iRam DDR2-667, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:IR2GSO667D2
  • 2GB DDR2-667 non-ECC SO-DIMM
  • Apple Tested Memory
$41.30
2GB iRam DDR2-667, 240-Pin FB-DIMM Kit ECC Fully Buffered Memory
  • Item:IR2GMP667K
  • 2GB DDR2-667 FB-DIMM Kit
  • Kit Consists of (2) 1GB DIMMS
$92.40
2GB iRam DDR2-800, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:IR2GSO800D2
  • 2GB DDR2-800 non-ECC SO-DIMM
  • Apple Tested Memory
$41.30
2GB iRam DDR2-800, 240-Pin FB-DIMM ECC Fully Buffered Memory
  • Item:IR2GMP800K
  • 2GB DDR2-800 FB-DIMM Kit
  • Kit Consists of (2) 1GB DIMMS
$92.40
2GB Transcend DDR2-400, 240-Pin DIMM ECC Registered Memory
  • Item:TS256MQR72V4T
  • 2GB DDR2-400 Reg. DIMM
  • Server Memory
$98.20
2GB Transcend DDR2-400, 240-Pin DIMM ECC Registered Memory
  • Item:TS256MQR72V4K
  • 2GB DDR2-400 Reg. DIMM
  • Server Memory
$174.95
2GB Transcend DDR2-533, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:TS256MSQ64V5U
  • 2GB DDR3-533 SO-DIMM
  • Laptop Memory
$55.60
2GB Transcend DDR2-533, 240-Pin DIMM ECC Unbuffered Memory
  • Item:TS256MLQ72V5U
  • 2GB DDR2 533 ECC DIMM
  • Timing: 4-4-4
$66.95
2GB Transcend DDR2-533, 240-Pin DIMM non-ECC Unbuffered Memory
  • Item:TS256MLQ64V5U
  • 2GB DDR2 533 DIMM
  • Timing: 4-4-4
$55.25
2GB Transcend DDR2-667, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:TS256MSQ64V6U
  • 2GB DDR2-667 SO-DIMM
  • Laptop Memory
$55.60
2GB Transcend DDR2-667, 240-Pin DIMM ECC Registered Memory
  • Item:TS256MQR72V6UL
  • 2GB DDR2-667 Reg. DIMM
  • Server Memory
$69.50
2GB Transcend DDR2-667, 240-Pin DIMM ECC Registered Memory
  • Item:TS256MQR72V6U
  • 2GB DDR2-667 Reg. DIMM
  • Server Memory
$68.50
2GB Transcend DDR2-667, 240-Pin DIMM ECC Registered Memory
  • Item:TS256MQR72V6K
  • 2GB DDR2-667 Reg. DIMM
  • Server Memory
$175.25
2GB Transcend DDR2-667, 240-Pin DIMM ECC Unbuffered Memory
  • Item:TS256MLQ72V6U
  • 2GB DDR2-667 ECC DIMM
  • Workstation/Server Memory
$65.50
2GB Transcend DDR2-667, 240-Pin DIMM non-ECC Unbuffered Memory
  • Item:TS256MLQ64V6U
  • 2GB DDR2-667 DIMM
  • Desktop Memory
$55.50
2GB Transcend DDR2-667, 240-Pin FB-DIMM ECC Fully Buffered Memory
  • Item:TS256MFB72V6U-T
  • 2GB DDR2-667 FB-DIMM
  • Server Memory
$84.50
2GB Transcend DDR2-667, 240-Pin FB-DIMM ECC Fully Buffered Memory
  • Item:TS256MFB72V6K-T
  • 2GB DDR2-667 FB-DIMM
  • Server Memory
$187.25
2GB Transcend DDR2-800, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:TS256MSQ64V8U
  • 2GB DDR2-800 SO-DIMM
  • Laptop Memory
$55.95
2GB Transcend DDR2-800, 240-Pin DIMM ECC Registered Memory
  • Item:TS256MQR72V8U
  • 2GB DDR2-800 Reg. DIMM
  • Server Memory
$67.50
2GB Transcend DDR2-800, 240-Pin DIMM ECC Unbuffered Memory
  • Item:TS256MLQ72V8U
  • 2GB DDR2-800 ECC DIMM
  • Workstation/Server Memory
$65.50
2GB Transcend DDR2-800, 240-Pin DIMM non-ECC Unbuffered Memory
  • Item:TS256MLQ64V8U
  • 2GB DDR2-800 DIMM
  • Desktop Memory
$55.50
2GB Transcend DDR2-800, 240-Pin FB-DIMM ECC Fully Buffered Memory
  • Item:TS256MFB72V8U-T
  • 2GB DDR2-800 FB-DIMM
  • Server Memory
$83.50
4GB Avant DDR2-400, 240-Pin DIMM ECC Registered Memory
  • Item:AVF7251R62E3400X
  • 4GB DDR2-400 ECC Reg DIMM
  • Desktop Memory
$128.25
4GB Avant DDR2-667 Registered ECC DIMM Memory
  • Item: AVF7251P62E5667FX
  • Capacity: 4GB
  • Speed: DDR2-667 Registered
$119.95
4GB Avant DDR2-667, 240-Pin FB-DIMM ECC Fully Buffered Memory
  • Item:AVF7251B62E5667FX
  • 4GB DDR2-667 FB-DIMM
  • Desktop Memory
$89.95
4GB Avant DDR2-800, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:AVK6451U79E6800FX
  • 4GB DDR2-800 SO-DIMM
  • Laptop Memory
$109.95
4GB iRam DDR2-667, 240-Pin FB-DIMM Kit ECC Fully Buffered Memory
  • Item:IR4GMP667K
  • 4GB DDR2-667 FB-DIMM Kit
  • Kit consists of (2) 2GB DIMMS
$112.00
4GB iRam DDR2-800, 240-Pin FB-DIMM ECC Fully Buffered Memory
  • Item:IR4GMP800K
  • 4GB DDR2-800 FB-DIMM Kit
  • Kit consists of (2) 2GB DIMMS
$112.00
4GB Transcend DDR2-400, 240-Pin DIMM ECC Registered Memory
  • Item:TS512MQR72V4T
  • 4GB DDR2-00 Reg. DIMM
  • Server Memory
$248.00
4GB Transcend DDR2-667, 240-Pin DIMM ECC Registered Memory
  • Item:TS512MQR72V6T
  • 4GB DDR2-667 Reg. DIMM
  • Server Memory
$169.50
4GB Transcend DDR2-667, 240-Pin FB-DIMM ECC Fully Buffered Memory
  • Item:TS512MFB72V6U-T
  • 4GB DDR2-667 FB-DIMM
  • Server Memory
$139.95
4GB Transcend DDR2-667, 240-Pin FB-DIMM ECC Fully Buffered Memory
  • Item:TS512MFB72V6T-T
  • 4GB DDR2-667 FB-DIMM
  • Server Memory
$196.95
4GB Transcend DDR2-800 Registered ECC DIMM Memory (VLP)
  • Item:TS512MQR72V8NL
  • 4GB DDR2-800 Reg. Low Profile DIMM
  • Server Memory
$214.95
512MB Avant DDR2-400 non-ECC DIMM Memory
  • Item: AVF6464U52E3400F9
  • Capacity: 512MB
  • Speed: DDR2-400 (PC2-3200)
$17.40
512MB Avant DDR2-533 ECC DIMM Memory
  • Item: AVF7264U52E4533FX
  • Capacity: 512MB
  • Speed: DDR2-533 ECC/li>
$23.20
512MB Avant DDR2-533, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:AVK6464U51E4533FX
  • 512MB DDR2-533 SO-DIMM
  • Laptop Memory
$21.50
512MB Avant DDR2-533, 240-Pin DIMM non-ECC Unbuffered Memory
  • Item:AVF6464U52E4533FX
  • 512MB DDR2-533 DIMM
  • Desktop Memory
$18.95
512MB Avant DDR2-667 DIMM Memory
  • Item: AVF6464U52E5667FX
  • Capacity: 512MB
  • Speed: DDR2-667 (PC2-5300)
$17.95
512MB Avant DDR2-800 DIMM Memory
  • Item: AVF6464U52E6800FX
  • Capacity: 512MB
  • Speed: DDR2-800 non-ECC
$17.95
512MB iRam DDR2-533, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:IR512MSO533D2
  • 512MB DDR2-533 SO-DIMM
  • Apple Tested Memory
$18.20
512MB iRam DDR2-667, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:IR512MSO667D2
  • 512MB DDR2-667 SO-DIMM
  • Apple Tested Memory
$18.20
512MB Transcend DDR2-400, 240-Pin DIMM ECC Registered Memory
  • Item:TS64MQR72V4J
  • 512MB DDR2-400 Reg. DIMM
  • Server Memory
$33.19
512MB Transcend DDR2-400, 240-Pin DIMM non-ECC Unbuffered Memory
  • Item:TS64MLQ64V4J
  • 512MB DDR2-400 DIMM
  • Desktop Memory
$21.85
512MB Transcend DDR2-533, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:TS64MSQ64V5J
  • 512MB DDR2-533 SO-DIMM
  • Laptop Memory
$22.50
512MB Transcend DDR2-533, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:TS64MSQ64V5M
  • 512MB DDR2-533 SO-DIMM
  • Laptop Memory
$22.95
512MB Transcend DDR2-533, 240-Pin DIMM ECC Unbuffered Memory
  • Item:TS64MLQ72V5J
  • 512MB Transcend DDR2-533
  • Timing: 4-4-4
$26.80
512MB Transcend DDR2-533, 240-Pin DIMM non-ECC Unbuffered Memory
  • Item:TS64MLQ64V5J
  • 512MB DDR2 533 DIMM
  • Timing: 4-4-4
$23.25
512MB Transcend DDR2-667, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:TS64MSQ64V6M
  • 512MB DDR2-667 SO-DIMM
  • Laptop Memory
$22.95
512MB Transcend DDR2-667, 200-Pin SO-DIMM non-ECC Unbuffered Memory
  • Item:TS64MSQ64V6J
  • 512MB DDR2-667 SO-DIMM
  • Laptop Memory
$22.95
512MB Transcend DDR2-667, 240-Pin DIMM non-ECC Unbuffered Memory
  • Item:TS64MLQ64V6J
  • 512MB DDR2-667 DIMM
  • Desktop Memory
$23.25
512MB Transcend DDR2-800, 240-Pin DIMM non-ECC Unbuffered Memory
  • Item:TS64MLQ64V8J
  • 512MB DDR2-800 DIMM
  • Desktop Memory
$23.95
8GB iRam DDR2-667, 240-Pin FB-DIMM Kit ECC Fully Buffered Memory
  • Item:IR8GMP667K
  • 8GB DDR2-667 FB-DIMM Kit
  • Kit consists of (2) 4GB DIMMS
$224.00
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What is DDR2 RAM Memory?

As DDR2 is a type of an SDRAM, it stores its memory in memory cells. These cells are then activated at according times to correctly operate with an external data bus. Although the DDR2 shares many similarities with the original DDR, as in the case with data transfer happening with the rise and fall at the edge of the clock, it is different in that the DDR2's bus is clocked at twice the speed. This basically allows the DDR2 to be twice as more efficient than the original DDR.

Is DDR2 RAM Memory backward compatible with DDR Memory?

No. DDR2 memory chips and modules are very different from DDR. For example, DDR2 runs at a lower voltage (1.8V) than DDR (2.5V). The notch on DDR2 DIMMs is in a different position than DDR DIMMs. DDR2 is a 240-pin module, DDR is a 184-pin module. Notebooks have 200-pin modules for DDR and DDR2.

Can DDR2 DIMMs be plugged into DDR Sockets or vice versa?

No. Memory modules (Unbuffered, Registered, Small Outline DIMMs) have a special “key” or notch in their connector.  The notch on DDR2 DIMMs is in a different position than DDR DIMMs. DDR2 is a 240-pin module, DDR is a 184-pin module. Notebooks have 200-pin modules for DDR and DDR2.

How do I correctly handle DDR2 Memory?

DDR2 is a more delicate product then the DDR1 that it replaces.  DDR2 memory modules are made with FBGA chips. These chips are much more delicate than the TSOP type packages on DDR1. DDR2 modules must not have anything stacked on top of the FBGA chips as it is easy to physically damage the package. Always store DDR2 modules in the protective tray or shell that it was delivered in.

NEVER ATTEMPT TO INSTALL  A DDR2 MODULE INTO A DDR1 SOCKET.  DDR2 silicon is very susceptible to failure due to Electrostatic Discharge (ESD). Correct handling procedures must be followed to prevent ESD events.  Before touching these modules, ensure that you are correctly grounded.

How do I correctly install a DDR2 Memory Module?

Before touching these modules, ensure that you are correctly grounded.  Before inserting module to motherboard or machine make sure that motherboard or machine is correctly grounded. This can be done by wearing some kind of static control device such as a wrist strap or footstraps. Machines can be grounded by connect the power cable to a power socket (that is turned off).
Pick up the module by it’s sides. Do not touch the gold contacts at the bottom of the module. Look at the notches at the base of the module and line them up with the notches on the connector of the DDR2 motherboard.  Press the module into position, making sure that the module is properly seated in the connector. The tabs on the sides of connector will snap into place by hooking into the sides of the module.

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