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Ram voltage Problem

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October 15, 2012 9:06:55 AM

Hey guys i have a problem about ram voltages.. Is there a performance difference between 1.5v ram and 1.25v ram? I know lower voltage menas less heat, power. But isn't there any performance decrese? I am not going to oc my ram or cpu.. Using a i5 2400 and intel dh67cl mobo..

More about : ram voltage problem

a c 80 } Memory
October 15, 2012 1:09:25 PM

With the same timings performance is identical.
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October 15, 2012 1:56:42 PM

Is it fully compatible with intel dh67cl motherboard?
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a b } Memory
October 15, 2012 4:07:21 PM

lakshitharxx said:
Is it fully compatible with intel dh67cl motherboard?


Look up the motherboard on Intel's site to see if the RAM is on the compatible list.
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a c 80 } Memory
October 15, 2012 4:44:19 PM

lakshitharxx said:
Is it fully compatible with intel dh67cl motherboard?

I obviously missed the model number in your original post. Only 1.5v modules have been certified with that motherboard. 1.25v modules may work, but I wouldn't take that risk. Low-voltage modules are worth it in a computer room where thousands of modules are installed, but it's insignificant in a home system. You probably don't care much if your system draws an additional watt per module.
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October 15, 2012 5:49:59 PM

GhislainG said:
I obviously missed the model number in your original post. Only 1.5v modules have been certified with that motherboard. 1.25v modules may work, but I wouldn't take that risk. Low-voltage modules are worth it in a computer room where thousands of modules are installed, but it's insignificant in a home system. You probably don't care much if your system draws an additional watt per module.


My only choices are Corsair vengeance and g skill sniper 1.25V ram. G skill one is LKR2000 (18$) cheaper than vengeance one. Also vengeance modules are not in stock and i have to wait at least one week to get them. Is that a big risk which i shouldn't take?

P.s My both vengeance and sniper are 1600mhz ram modules. My mobo only support up to 1333mhz but i am going to upgrade it within few months.
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a b } Memory
October 15, 2012 6:06:48 PM

Side issue. Intel only warrents the SB CPUs when run under specs.
Spec One. CPU voltage max = 1.5 V (not a problem for You as not OCing).
spec # two. Ram Voltage. 1.500 ± 5% (1.425 to 1.575 ) 1.25 V ram would only be a problem if CPU failed and you tried to RMA it, intel may decline to honor the warrentee.
NOTE ram above DDR3-1333 also voids warrentee for SB processors (increases to DDR3-1600 for IB).
They do offer a OC warrenty. For SB i5-2500k it is $25 for i5-2400 it is less. EVEN if the CPU is not OCed, using ram above spec is considered an OC even thoe the CPU freq is not OCed.

As to performance, if speed and Timings are the same, performance is the same.
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October 15, 2012 6:36:11 PM

RetiredChief said:
Side issue. Intel only warrents the SB CPUs when run under specs.
Spec One. CPU voltage max = 1.5 V (not a problem for You as not OCing).
spec # two. Ram Voltage. 1.500 ± 5% (1.425 to 1.575 ) 1.25 V ram would only be a problem if CPU failed and you tried to RMA it, intel may decline to honor the warrentee.
NOTE ram above DDR3-1333 also voids warrentee for SB processors (increases to DDR3-1600 for IB).
They do offer a OC warrenty. For SB i5-2500k it is $25 for i5-2400 it is less. EVEN if the CPU is not OCed, using ram above spec is considered an OC even thoe the CPU freq is not OCed.

As to performance, if speed and Timings are the same, performance is the same.


I give up the idea of buying 1.25v sniper. I am not going to take that risk.

Quote:
NOTE ram above DDR3-1333 also voids warrentee for SB processors (increases to DDR3-1600 for IB).
They do offer a OC warrenty. For SB i5-2500k it is $25 for i5-2400 it is less. EVEN if the CPU is not OCed, using ram above spec is considered an OC even thoe the CPU freq is not OCed.


But my h67 will run this 1600mhz @ 1333mhz. will it void warranty too? using 1600mhz or running @ 1600mhz will void the warranty?
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a b } Memory
October 15, 2012 8:16:29 PM

For what's worth.
I'm running DDR3-1600 CL7 @ 1.6 Volts with My I5-2500k. I know is voids the warrenty and I have not bought their OC warrenty. And have been running that ever since I bought the i5 which was shortly after it came out.
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a c 80 } Memory
October 15, 2012 10:10:57 PM

lakshitharxx said:
My only choices are Corsair vengeance and g skill sniper 1.25V ram. G skill one is LKR2000 (18$) cheaper than vengeance one. Also vengeance modules are not in stock and i have to wait at least one week to get them. Is that a big risk which i shouldn't take?

P.s My both vengeance and sniper are 1600mhz ram modules. My mobo only support up to 1333mhz but i am going to upgrade it within few months.
If you Google your motherboard model, you should find that 1.25v memory may not work with all BIOS revisions. Before buying make sure that they are certified to work on the Intel dh67cl. I haven't checked Corsair, but G.Skill haven't certified their 1.25v modules for P67 motherboards.
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October 16, 2012 3:13:44 PM

I can't find anything about vengeance and H67 mobos. That means i can't run Vengeance one too? :o  I thought motherboard will run any 1.5V 1600mhz one @ 1333mhz ..
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a b } Memory
October 16, 2012 3:17:23 PM

DDR3-1600 on a SB platform will initially boot (default to) 1333 speed. You normally have to go into bios and change it to 1600. So yes Most 1600 ddr will run fine at 1333
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a b } Memory
October 16, 2012 3:28:26 PM

RetiredChief said:
DDR3-1600 on a SB platform will initially boot (default to) 1333 speed. You normally have to go into bios and change it to 1600. So yes Most 1600 ddr will run fine at 1333


IB does the same thing.
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a b } Memory
October 16, 2012 3:33:35 PM

IB should default to DDR3-1600., with DDR3-1600 or higher.
Spec for SB is 1333 and for IB it is 1600
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a b } Memory
October 16, 2012 4:37:28 PM

RetiredChief said:
IB should default to DDR3-1600., with DDR3-1600 or higher.
Spec for SB is 1333 and for IB it is 1600


Well my 3570k build defaulted to 1333. Had to enable XMP. I assumed they were all like that.
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a b } Memory
October 16, 2012 4:56:40 PM

"should" and "DO" are not always the same - LOLs
Could be MB dependent or Ram dependent. May depended on what is stored on the Ram as SPD info vs XMP info
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