11-11-11-27 Compatible with 11-11-11-30?

[xaelee]

Hello!
I currently have Patriot Viper 3 8GB (2x4GB)
I would like to upgrade another 8GB

The model I own is PV38G213C1K PD000287
I wanted to buy another pair of these, but for some reason the timing on mine are 11-11-11-30 and all the ones of the same model online are 11-11-11-27.
Is it safe to purchase and run both pairs of ram sticks to have 4x4gb under the different timings?

Thanks!
-Andy

 

[esco_sid]

Most likely it would work but hard to say until you try but if you dont mind spending a bit more just get 2X8Gb kit and replace those.

 

[scout_03]

use cpu-z spd tab and put both ram manualy in bios the the nearest jedec settings the both have should work , then check result on memory tab in cpu-z or hwinfo main page .

 

[xaelee]

@esco_sid the goal is to save money so i will not be going for that solution. A little bit more ends up being quite a bit.
@scout_03 im sorry, i dont really understand. so buy the second pair of ram, put it in... but i dont understand how i input both maunally in the bios in the nearest jedec settings.

 

[xaelee]

any other suggestions then or can someone clarify how to input both rams manually?

 

[brispuss]

There may be an issue of incompatibility between the two sets of memory owing to differing memory characteristics (apart from voltage, frequency and timings).

Assuming the two sets of memory are basically compatible, with the BIOS set on AUTO for all memory settings (voltage, timings, and frequency), BIOS should automatically make settings to ensure the memory works (compatibly). In the event of problems in getting the two sets of memory to run, memory timings in BIOS can be adjusted manually to the slowest common values which should be 11-11-11-30.

If still having problems getting all the memory to run, try increasing DRAM Voltage by 0.05 V. Don't exceed 1.65 V.

 

[scout_03]

check on this https://www.google.ca/?gws_rd=ssl#q=setting+ram+manualy+in+bios&*

 

[xaelee]

Thank you for your answers. So basically they aren't naturally compatible despite the same model number and extra work may be required to make them function together.

Should I just buy different ram that has the same timing/voltage/frequency or may that also result in conflict?

 

[brispuss]

The different memory might be "compatible", there's about a 50/50 chance of all the memory being compatible with each other. But there still may be incompatibility between memory modules, even if using the same memory (not from the same kit).

The issue is not so much the voltage, timings and frequency, it is more to do with the inherent characteristics of memory modules. Each module has unique characteristics, no two modules are 100% exactly alike. In order for two (or more) modules to work together (be compatible), their respective characteristics have to be identical (not 100%, but somewhere maybe in the ~ 90+% range).

Modules characteristics can't be predicted. The only way to ensure inter-module compatibility is to test them. This is what memory manufacturers do when creating dual, triple, and quad channel kits. Each module is tested against others until a compatible combination is found and the modules are then packaged into the same kit where inter-module compatibility is guaranteed as they have been manufacturer tested.

So it is a bit of a gamble as to whether different modules will work together or not. It may take several attempts with different modules to find a compatible combination.

Raising DRAM Voltage does however help in getting memory to work (properly) in the event the default DRAM voltage is insufficient for the modules to work. Raising the memory controller voltage may help also, but this is usually only done when all memory slots are populated and the raised DRAM voltage is still found to be insufficient for compatible module operation.

Ideally a quad channel kit should be used where all four modules are guaranteed to be compatible with each other.

 

[scout_03]

you have post the model you own but what about the one you want to get for voltage and cas give us the number of model . i have 4 adata ram from 2 set with same number but the new one have one more jedec timing then the other and both work at 1660 by setting in the bios manualy .

 

[xaelee]

Well I only looked up the same model number as my existing one. That is where the problem has come from as the timing is different for some reason. I have not selected another model of ram for me to try and match with mine. Seems hard to shop for ram as there are no parameters for things like timing/voltage/frequency. Perhaps I will just buy the same model as mine which has different timing and try to match it as you have suggested.

 

[scout_03]

the ram number you have lead to these ru seller check with them https://www.google.ca/?gws_rd=ssl#q=PV38G213C1K+PD000287&*

 

[xaelee]

Yes, I have check with vendors and they say that they receive their information directly from the manufacturer. I dont understand why mine are 11-11-11-30 though.

 

[scout_03]

you have the older model of it the new one have other timings made by the maker for the same model and nearly similar to your should work .