Mixing 1.65v ddr3 and 1.5v

[Sohaltang]

I have 4 GB corsair 1.65v 1600 @7-8-7-20. I ordered 7970oc at newegg and decided to grab 8gb g.skill ripsaw that was on sale. Did not pay attention to the voltage. It's 1.5v 9-9-9-24. Any suggestions on mixing the two? Or should I just pull the corsair ram out? Can the g.skill run at 1.65? What about getting timings set? RAM is not something I'm very knowledgable about.

Ohh I have a 3770k@4.5ghz on a asrock board.

 

[blastingcap]

Don't do it.

 

[Sohaltang]

Don't do it.

Will the corsair run at 1.5 at slower timings?

 

[jacktesterson]

More than likely running the 1.5v ram at 1.65v won't hurt anything - If you want to keep 12GB of Ram

Other option is running it all at 1333 and see if the 1.65v ram can do it at 1.5v - Most don't notice any difference between 1333 and 1866 unless an APU is involved - which is not. It may even run at 1.5v @ 1600 with looser timings.

 

[Zap]

Either run the lower voltage RAM at higher voltage, or run at relaxed latencies or lower MHz. You can check CPU-Z to see what the SPD says about your RAM (some motherboard BIOSes also report it) and then run at the highest performance settings that both officially supports. Alternately, run the RAM out of spec, like many overclockers do.

 

[Sohaltang]

I prefer to keep the ram since it was pretty good stuff although a few years old. I think when I replaced the mb and chip it defaulted to 1333 but I'm not sure what timings. I remember having to manually change the settings to get the excact specs.


What's the worse case? The g.skill ram burns up? RMA? Also what slots to put the in? I assume the bigger chips in 1/3 and the corsair in 2/4?

 

[Termie]

I prefer to keep the ram since it was pretty good stuff although a few years old. I think when I replaced the mb and chip it defaulted to 1333 but I'm not sure what timings. I remember having to manually change the settings to get the excact specs.


What's the worse case? The g.skill ram burns up? RMA? Also what slots to put the in? I assume the bigger chips in 1/3 and the corsair in 2/4?

Yeah, that's probably the worst case, although I don't think you could RMA memory that you ran out of spec.

Anyway, if your Corsair memory is really DDR3-1600 7-8-7-20, it will almost certainly run at 9-9-9-24 at 1.5v. Just try it right now, before you install your other memory.

 

[Sohaltang]

Lol duh.. Guess ill go try that. It's really 7-8-7-20, would have ought 4 GB to match but I could never find it. Looks like 1.65v ram fell out of favor.

This is what I got.
http://www.newegg.com/Product/Produc...82E16820145285

 

[Sohaltang]

Yeah, that's probably the worst case, although I don't think you could RMA memory that you ran out of spec.

Anyway, if your Corsair memory is really DDR3-1600 7-8-7-20, it will almost certainly run at 9-9-9-24 at 1.5v. Just try it right now, before you install your other memory.

That works just fine. Now I wonder how far I can push the new ram when it arrives. Hopefully can find a happy median between the two and improve performance a little. TY TY