Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz RAM

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Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz (PC3 8500) Laptop Memory 1.5V

Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz (PC3 8500) Laptop Memory 1.5V
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  • Density: 4GB (1x4GB SO-DIMM)
  • Speed: 1066MHz CL7
  • Timing: 7-7-7-20 (1066MHz)
  • Type: DDR3
  • Format: SO-DIMM
  • Pin Out: 204 Pin
  • Voltage: 1.5V. Memory Type: DDR3; Speed: 1066MHz
  • Compatible with MacBook Pro (13-inch, Mid 2009), MacBook Pro (13-inch, Mid 2010), MacBook Pro (15-inch, Mid 2010), MacBook Pro (15-inch, 2.53GHz, Mid 2009), MacBook Pro (15-inch, Mid 2009), MacBook Pro (17-inch, Mid 2010), MacBook Pro (17-inch, Mid 2009), MacBook Pro (17-inch, Early 2009)
Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz image 1
Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz image 2
Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz image 3
Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz image 4
Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz image 5
Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz image 6
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Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz thumbnail 2
Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz thumbnail 3
Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz thumbnail 4
Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz thumbnail 5
Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz thumbnail 6

Specifications Overview

Model CMSA4GX3M1A1066C7
Type 204-pin DDR3 SODIMM
Speed DDR3-1066 MHz
Size 4GB (1 x 4GB)
CAS Latency 7
Timing 7-7-7-20
First Word Latency 13.13 ns
Voltage 1.5 V
Heat Spreader
ECC Support

RAM First Word Latency Table (nanoseconds)

Latency is measured in nanoseconds, which is a combination of frequency and CAS. Both frequency increases and latency decreases result in better system performance (when latency is the same, always prefer higher frequency if possible).

Frequency (MT/s)

1066 1333 1600 1866 2000 2133 2400 2666 2800 2933 3000 3100 3200
7 13.13 10.50 8.75 7.50 7.00 6.56 5.83 5.25 5.00 4.77 4.67 4.52 4.38
8 15.01 12.00 10.00 8.57 8.00 7.50 6.67 6.00 5.71 5.46 5.33 5.16 5.00
9 16.89 13.50 11.25 9.65 9.00 8.44 7.50 6.75 6.43 6.14 6.00 5.81 5.63
10 18.76 15.00 12.50 10.72 10.00 9.38 8.33 7.50 7.14 6.82 6.67 6.45 6.25
11 20.64 16.50 13.75 11.79 11.00 10.31 9.17 8.25 7.86 7.50 7.33 7.10 6.88
12 22.51 18.00 15.00 12.86 12.00 11.25 10.00 9.00 8.57 8.18 8.00 7.74 7.50
13 24.39 19.50 16.25 13.93 13.00 12.19 10.83 9.75 9.29 8.86 8.67 8.39 8.13
14 26.27 21.01 17.50 15.01 14.00 13.13 11.67 10.50 10.00 9.55 9.33 9.03 8.75
15 28.14 22.51 18.75 16.08 15.00 14.06 12.50 11.25 10.71 10.23 10.00 9.68 9.38
16 30.02 24.01 20.00 17.15 16.00 15.00 13.33 12.00 11.43 10.91 10.67 10.32 10.00
17 31.89 25.51 21.25 18.22 17.00 15.94 14.17 12.75 12.14 11.59 11.33 10.97 10.63
18 33.77 27.01 22.50 19.29 18.00 16.88 15.00 13.50 12.86 12.27 12.00 11.61 11.25
19 35.65 28.51 23.75 20.36 19.00 17.82 15.83 14.25 13.57 12.96 12.67 12.26 11.88
CAS (clock cycles) Lower latency means faster memory.

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