Different voltage RAM pairs

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Here's what I have: PATRIOT DDR3 4GB (2x2GB) 1600MHZ CL9 GAMING ELK AMD (PGS34G1600ELKA) @ 1.80V

Here's what I want to buy: PATRIOT Viper 3 Series, Black Mamba, DDR3 8GB (2x4GB) 1600MHz CL9 Dual Channel Kit (PV38G160C9K) @ 1.50V

I want to put it all together into two dual channels.

My motherboard: ASRock M3A770DE

Is that going to work together? Is there something better idea? I need a lot of RAM for hd video rendering but have money only for 2x4GB set. Please help me.
 
Solution
geofelt
Your plan may not work.
A motherboard must control all ram sticks using the same voltage.
One set needs 1.8v to run at 1600. This was used in some older motherboards.
Regardless, Ram is sold in kits for a reason.
Ram from the same vendor and part number can be made up of differing manufacturing components over time.
Some motherboards can be very sensitive to this.
That is why ram vendors will NOT support ram that is not bought in one kit.
Although, I think the problem has lessened with the newer Intel chipsets. Still,
it is safer to get what you need in one kit.
I suppose it would not hurt to try so long as you will be satisfied with 8gb.
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DarkSable

DarkSable

Judicious
Sep 27, 2012
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The fact that ram uses 1.8v is a little scary, and you shouldn't be using it at that voltage - it could quite easily damage your motherboard or CPU.

I suggest you just buy the 8GB and use it alone - even if you used the 4GB with it, it wouldn't run in dual channel without downsizing the 4GB sticks to match the 2GB ones, so you'd have 8GB anyways, and it would just be slower and more dangerous.
 
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geofelt

geofelt

Titan
Oct 9, 2006
54,295
4,145
174,240
Your plan may not work.
A motherboard must control all ram sticks using the same voltage.
One set needs 1.8v to run at 1600. This was used in some older motherboards.
Regardless, Ram is sold in kits for a reason.
Ram from the same vendor and part number can be made up of differing manufacturing components over time.
Some motherboards can be very sensitive to this.
That is why ram vendors will NOT support ram that is not bought in one kit.
Although, I think the problem has lessened with the newer Intel chipsets. Still,
it is safer to get what you need in one kit.
I suppose it would not hurt to try so long as you will be satisfied with 8gb.
 
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