Crucial 4GB (1x 4GB) CL7 DDR3L-1066 PC3L-8500 1.35V / 1.5V 204-pin SODIMM RAM Module
This 4GB (1x 4GB) DDR3L 1066 MT/s RAM module from Crucial is for use in DDR3L compatible systems and operates at 1066 MT/s with an overall transfer rate of PC3L-8500.
This RAM module also operates at a standard voltage of 1.35V / 1.5V with a CAS Latency of CL7, and is designed to allow you to run more applications simultaneously, switch between them faster, and provide a smoother computing experience.
|Capacity||4GB (1x 4GB)|
|Speed||DDR3L-1066 -1066MT/s - 1067MT/s - PC3L-8500|
|Voltage||1.35V / 1.5V|
|Form Factor||204-pin SODIMM|
|Pieces in Kit||1|
You can verify the compatibility of this RAM module in a number of ways:
- Use the RamCity Finder to see all guaranteed compatible RAM upgrades for your brand and model system or motherboard
- Search online to see if this product is on the QVL (Qualified Vendor List) for your system or motherboard
- Contact one of our Upgrade Evangelists for an expert opinion
Why is the speed of this RAM module shown as 1066 MT/s instead of 1066 Mhz?
When it comes to measuring DDR RAM speed, MT/s and MHz are used interchangeably, which is not actually correct.
DDR stands for double data rate which means data is transfers on both the rising and falling edges of the clock signal. Meaning that the transfer rate is roughly twice the speed of the I/O bus clock. This RAM module runs at 533MHz per second, but the effective rate is 1066 megatransfers per second (MT/s) because there are 533 million rising edges per second and 533 million falling edges per second of a clock signal running at 533 MHz.
Dual Voltage for Newer and Older systems
This RAM module supports voltages of both 1.35V and 1.5V. If your original installed memory is 1.5V and you are adding a dual-voltage 1.35V/1.5V module to an open DIMM slot, this dual-voltage RAM module will operate at 1.5V, not 1.35V. If all installed memory modules are dual-voltage 1.35V/1.5V and the system supports DDR3L (1.35V low voltage), then this RAM module will run at 1.35V.
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Crucial 8GB (2x 4GB) CL7 DDR3L-1066 PC3L-8500 1.35V / 1.5V DR x8 204-pin SODIMM RAM Kit for Mac (or PC)