Memory chips

To identify chips on older memory modules:

Corsair DDR3

Version Vendor IC Size

1.X Qimonda 64/128Mx8

1.1X Qimonda 256x8

1.2X Qimonda 512Mx8

2.X Elpida 64/128Mx8

2.1X Elpida 256Mx8

2.2X Elpida 512Mx8

3.X Micron 128Mx8

3.1X Micron 256Mx8

3.2X Micron 512Mx8

4.X Samsung 128Mx8

4.1X Samsung 256Mx8

4.2X Samsung 512Mx8

5.X Hynix 128Mx8

5.1X Hynix 256Mx8

5.2X Hynix 512Mx8

6.X Promos 128Mx8

6.1X Promos 256Mx8

6.2X Promos 512Mx8

7.X (PSC) 128Mx8

7.1X (PSC) 256Mx8

7.2X (PSC) 512Mx8

8.X Nanya 128Mx8

8.1X Nanya 256Mx8

8.2X Nanya 512Mx8

9.X Winbond A1-Die 128MX8

9.1X Winbond 256Mx8

9.2X Winbond 512Mx8

G-skill

Use the 4 digits after the first digits in the serialnumber

0140 = Micron

0000 = Hynix

0240 = Hynix

0360 = Samsung

0640 = Elpida non-Hyper

0650 = Elpida (seen on blue PCB Tridents)

0660 = Elpida non-Hyper

0690 = Elpida Hyper

1040 = PSC

1240 = Nanya (?)

Related to Timings:

tRC=tRAS+tRP

tFAW=16 DRAM clocks or tRRD * 4

Write to Precharge Delay / Write Recovery Time or tWR = tCL - 1 +BL/2 + tWR

tRAS = CL + tRCD+tRP

DRAM Write Latency = CL -1

Write to Read = tCL - 1 +BL/2 + tWTR.

BL(Burst Lenght) practically always 8

tCAS in Nano seconds=(CAS*2000)/Memory Frequency