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DDR3 DIMMS require a 240-pin slot and 1.5 operating voltage. A slot for DDR3 memory is keyed differently than DDR2 or DAR. Do not attempt to install DDR3 memory into a motherboard designed for DAR or DDR2. Doing so can permanently damage the motherboard and DIMM. Have a glance below. DDR4 RAM: DDR3 RAM: If you observer the notch in DDR4 and DDR3, it is given at two different places to avoid the wrong insertion, apart from notch the pins in DDR4 is slightly more when compared with DDR3 and the. Cumpara Acum Memorie de 8GB Ram DDR3 de la eMAG. Platesti numai dupa ce deschizi coletul. A-Tech 8GB (2 x 4GB) PC3-8500 DDR3 1066/1067 MHz RAM for MacBook, MacBook Pro, iMac, Mac Mini (Late 2008, Early/Mid/Late 2009, Mid 2010) 204-Pin SODIMM Memory Kit 4.7 out of 5 stars 609 $30.99. Mirror-inverted assembly of the memory slots; Please note: Configurations that do not fulfil these requirements, automatically work in Single Channel mode. The slowest DIMM built into the system determines the pace of the bus clock and the memory access for the complete RAM. The following requirements within a module pair do not have to be.
DDR3L modules are backwards compatible with DDR3 by design.
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Manufacturers use the same integrated circuits for DDR3 and DDR3L. The highest quality ICs are tested for operating at 1.35 volts and are branded as DDR3L if they run properly. Other than that, there’s no difference between them.
yes it is correct, that they should use the same Chips. So from a functionallity point of view it is really just the same compatibility issue as with DDR3 from one vendor to another vendor (or even just for one die shrink to the next die shrink).
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JEDEC defines that the DIMM needs to be backward compatible. So if a JEDEC compliant DIMM is operating at 1.5V should be tested and verified from the vendor. But not too many DIMM vendors really state that the DIMM is JEDEC compliant.
E. g. I have seen DIMMs with devices not supporting specific CL that they would need to support to be JEDEC compliant ..
And in this case thre is no need that the DIMM really is backward compatible (even if it is just a question of Speed, or reliability over time).
Even standard DIMMs are theoretically interchangable, there are many compatibility issues between motherboard, controller and DIMM out there .. and DDR3L will not make it better ..
Guess thats the usual difference between theory and praxis ..
and so I prefer to look at the DIMM spec and at least verify that the 1.5V is a supported voltage on a DDR3L DIMM if I intend to use it in a DDR3 System…
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