Help for buying memory

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raminlich

Reputable
Sep 24, 2015
12
0
4,510
Hi,
CPU : Intel I3 4170
Board : Asus H81-V3

i had 4GB ram ( 2x 2gb) 1333 with 1.5V

last night one of my rams burned out now im running with one 2gb ram.
i considered to buy a new 4GB ram but i need little help.
this ram that is working properly is 1333 with 1.5V.
i was going to buy a new 4GB 1600 with 1.65V
is different voltage cause some troubles?
i heard that if i mix 1600 ram with 1333
that ram with 1600 will go lower to 1333, ok i have no problem with this since i want to replace the old one later.
So is it ok to mix 1.65 V with 1.5 V?
Note : my cpu is 1.5V according to this link: Intel i3 and my board support XMP.
Thanks.

 
Solution
geofelt
Ram is sold in kits for a reason.
A motherboard must manage all the ram using the same specs of voltage, cas and speed.
Some motherboards can be very sensitive to differences.

I suggest you go to a ram web site and access their ram selection guide.
Enter your motherboard and you will get a list of compatible and supported kits.
Buy a 2 stick kit so you can run in faster dual channel operation.
Now might be a good time to upgrade to a 2 x 4gb kit.
Buy the cheapest you can find. Ram speed matters little, you are looking at perhaps 1-2% real app performance between 1060 and 1600.
The reason is that higher speed comes with more latency, negating the difference.
Divide the speed by the latency and you will see what I mean.

Keep your old...
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Kavinqt

Kavinqt

Distinguished
Jan 26, 2014
727
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19,610
You won't be able to put 2 different ram sticks together, you need to either buy the same exact ram in your PC already or buy 2 new sticks entirely to replace the old ones. and yes different voltages could cause issues because that motherboard may not be able to handle more than 1.5V's
 
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khashayar2000

khashayar2000

Respectable
Jun 24, 2016
603
0
2,660
Hi
It May Cause Trouble But Not Impossible

You may get by with it if you set your BIOS RAM settings to 1.5V and increase the latencies to the higher of the two sets of RAM. If you choose this option anyway, POST with only the 1.5V RAM modules to make your BIOS RAM setting changes. Then save and exit. Disconnect your power cord and insert the 1.65V RAM modules.
 
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geofelt

geofelt

Titan
Oct 9, 2006
54,380
4,185
174,240
Ram is sold in kits for a reason.
A motherboard must manage all the ram using the same specs of voltage, cas and speed.
Some motherboards can be very sensitive to differences.

I suggest you go to a ram web site and access their ram selection guide.
Enter your motherboard and you will get a list of compatible and supported kits.
Buy a 2 stick kit so you can run in faster dual channel operation.
Now might be a good time to upgrade to a 2 x 4gb kit.
Buy the cheapest you can find. Ram speed matters little, you are looking at perhaps 1-2% real app performance between 1060 and 1600.
The reason is that higher speed comes with more latency, negating the difference.
Divide the speed by the latency and you will see what I mean.

Keep your old stick for backup, it is really not worth anything.
 
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