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What is good ram to get? - Page 2

post #11 of 22
Thread Starter 
So, I'm getting mixed messages. I've read online that it's not a good idea to mix voltages. But there aren't any 16gb kits that are 1.65V...
post #12 of 22
You are on overclock.net.

people here run ram upwards of 1.8v for prolonged periods of time without issue. It really depends on what you have for 1, and this plug and play ram is manufactured with compatability in mind. if you want to drop it in with some sticks that are 1.65v. you can and they will still be covered by warranty, and all 4 sticks will run at 1.65v. WITHOUT ISSUE.

The ram in my machine is specced to 1.35v, and is currently operating at 1.7v.


edit: the 1.7v in my case is outside of spec and can be considered a little high. DDR3 manufactured for consumer use is required to support an operating range between 1.25 and 1.65 as part of the DDR3 standard.

Kingston does not consider 1.65v on their modules rated at 1.5v to be abuse. It will work fine, and operate fine. it will not get hot, it will not error.
Edited by Xinoxide - 4/7/14 at 11:37pm
post #13 of 22
I have forwarded the question to my handy dandy kingston rep, lets wait for a their answer.

but like I said, you can simply remove the 4GB if you are worried about differences in voltage.
post #14 of 22
Thread Starter 
Thanks. I went ahead and ordered the plug and play kit. If anything I will just stick with 16 gig to avoid problems, but 20 would be nice. I hope your rep will have some good news.
post #15 of 22
Im sure they will.

I have NEVER run into an issue mixing voltages. because they dont mix, you just run the higher voltage.

cant think of a single IC that runs into stability problems at voltages covered by the specifications for DDR3.
post #16 of 22
Thread Starter 
Once I get this ram, do I need to change any bios settings to use my current ram with the new kit? Should I overclock it? I'm a total newb when it comes to this.
post #17 of 22
I would overclock it.

It will be decent performing RAM for the price. All those issues with running out of RAM will be gone. aside from that it will perform basically the same.

You may need to change a minimal amount of settings to match whats on the sticks, but I doubt it.

If you plan to run all 20GB, youll just need to manually set 1.65v, and then the timings and frequency of the new kit so that they will play nice together.

the timings on the new ram are probably only so loose for compatability purposes though, so I personally would at least tighten up the timings.

I recommend doing this one "timing" at a time, and then using prime95 blend test with 90% + memory usage to stress the memory and make sure its stable.
post #18 of 22
It's too bad that your original choice is SO-DIMM because that Crucial brand stuff with no heatsinks and with Micron chip markings tends to be very high quality and not overclocked,

I wouldn't buy DDR3 rated higher than 1.5V because it's bottom of the barrel and the most overclocked, but it's perfectly OK to use 1.5V memory at 1.65V, and the motherboard will set the voltage to for all the RAM to the rating of the highest voltage RAM in the system.

I might favor Kingston, and their HyperX Beast is some of the least overclocked in frequency, but the clock cycle ratings are faster than their chips'.
post #19 of 22
Thread Starter 
Quote:
Originally Posted by Xinoxide View Post

I would overclock it.

It will be decent performing RAM for the price. All those issues with running out of RAM will be gone. aside from that it will perform basically the same.

You may need to change a minimal amount of settings to match whats on the sticks, but I doubt it.

If you plan to run all 20GB, youll just need to manually set 1.65v, and then the timings and frequency of the new kit so that they will play nice together.

the timings on the new ram are probably only so loose for compatability purposes though, so I personally would at least tighten up the timings.

I recommend doing this one "timing" at a time, and then using prime95 blend test with 90% + memory usage to stress the memory and make sure its stable.

Setting the memory to 1.65v is done in the bios right? How do I set the timings and frequency? What do I set them to? I'm lost.
post #20 of 22
Heres the reply from Kingston:
Quote:
You will not break anything and one of them will have to clock down to match the other one. However this will depend on the machine itself and depends on how finicky it is with memory.

If you have any other questions or concerns, please feel free to reply to this e-mail with full email history.


So we know the timings will have to be set to

CAS: 11
tRCD: 11
tRP: 11
tRAS: not listed in spec, but probably 31~, its also printed on the sticker as 11-11-11-31 ( probably )

those and a dram voltage ( or vmem ) will be set at 1.65.

I am not sure exactly how your bios is laid out, ill have to research it after we get from iHOP. My 2 1/2 year old wants a waffle. :]
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