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1.35v vs 1.5v

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August 29, 2013 11:43:15 PM

Sabertooth z87

Corsair Gold 1.35 16gb
or
Black 1.5v 16gb

What's the advantage/concern here?
Appreciate the advice :) 

More about : 35v

a c 128 } Memory
August 29, 2013 11:50:53 PM

Jake Hall said:
Sabertooth z87

Corsair Gold 1.35 16gb
or
Black 1.5v 16gb

What's the advantage/concern here?
Appreciate the advice :) 


Lower power consumption, that's it. 1.35 volt DIMMs and 1.5 volt DIMMs are identical in all respects. The chips are the same. The only difference is that the 1.35 volt DIMMs were separated out as part of the binning process (separating chips by quality).
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a c 1942 } Memory
August 30, 2013 12:07:32 AM

In this case yes, the mobo is compatible with LV (low voltage) memory, I know they tested with the 1.25 Snipers, though many mobos are not set for it (in particular older mobos and AMD ones)....the LV sticks are primarily out their as the DRAM manufactures work with new memory chips in prep for the release of DDR4 (was particularly noticeable recently, as NewEgg has had a number of promos where they have been packaging say a free 8GB sticks with mobos, CPUs etc, this allows the manufacturers to get some feed back on how the sticks perform, and no they aren't the same as 1.5, most LV use a different PCB and different chips, if they were the same as a 1.5 set of the same freq, they would be upwardly binned to higher freqs and could be sold at a much higher price, with many DRAM makers most are still in the experimental stage, GSkill has had low voltage out for quite awhile, just as they have had the higher freq DRAM out much longer than others, they basically are the innovation leader in DRAM
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a c 128 } Memory
August 30, 2013 12:29:14 AM

Tradesman1 said:
In this case yes, the mobo is compatible with LV (low voltage) memory, I know they tested with the 1.25 Snipers, though many mobos are not set for it (in particular older mobos and AMD ones)....the LV sticks are primarily out their as the DRAM manufactures work with new memory chips in prep for the release of DDR4 (was particularly noticeable recently, as NewEgg has had a number of promos where they have been packaging say a free 8GB sticks with mobos, CPUs etc, this allows the manufacturers to get some feed back on how the sticks perform, and no they aren't the same as 1.5, most LV use a different PCB and different chips, if they were the same as a 1.5 set of the same freq, they would be upwardly binned to higher freqs and could be sold at a much higher price, with many DRAM makers most are still in the experimental stage, GSkill has had low voltage out for quite awhile, just as they have had the higher freq DRAM out much longer than others, they basically are the innovation leader in DRAM


Micron Page 1

Hynix Page 11

Samsung Page 11 and page 41

Only Micron explicitly states that their DDR3L chips are cut from the same silicon as their DDR3 chips, but the same fact is very strongly implied by both Hynix and Samsung. The same may not be true for DDR3U and DDR3L-RS though
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a c 1942 } Memory
August 30, 2013 12:47:26 AM

Same silicon yes/maybe, but the design for low voltage is slightly different that the 'normal' 15 and up sticks and covered by JEDEC standards as an addendum to the DDR3 standards - JESD79-3 DDR3 Memory Device Standard, covering the 1.35 sticks as DDR3L and the 1.25 sticks available as DDR3U, the original specs go back to 2010 (June or July) and has been basically ignored until the standards came for DDR4 in draft
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September 3, 2013 3:39:31 PM

I appreciate all the input guys! Thank you. I went with 1.5v.
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a c 1942 } Memory
September 3, 2013 5:15:45 PM

Sounds good, let us know how it goes ;) 
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