Memory Kits Combination 7-7-7-20 with 7-8-7-20 ?

[Arseni]

Hello Everybody !!

I have a question for you;
I have a Patriot Dual Memory Kit, PV234G1600LLK, 2x2GB DDR3 1600MHz with 7-7-7-20 XMP Enabled, 1.9v

(http://patriotmemory.com/products/detailp.jsp?prodline=5&catid=34&prodgroupid=197&id=840&type=1)
I want to upgrade my Memory, to another pair (for a 2x4GB setup) , but this memory kit is no longer available - out of stock, so I've searched for another Memory kit's with the same setup of 7-7-7-20 and I didn't find much, expect from the Mushkin 996657 that is also out of production, and the Patriot PGS34G1600LLKA (also 7-7-7-20) that is available but it's very expansive.
*BTW: I reside outside the USA.
I have found Memory kits with similar setup (7-8-7-20), The Corsair CMX4GX3M2A1600C7 and the Mushkin 996679.
So my question for you is, Will it be OK to combine my pair (7-7-7-20) with the other pair with the 7-8-7-20 setup, or it's to risky, and I need only the exact setup for a safe and error free system run ?


Thanks for the help,
because I really need it.
Arseni

 

[hell_storm2004]

Sell this off on ebay if possible and buy one new kit of RAM's. Mixing is not a very good idea!

 

[macewrox]

You never -ever- want to mix RAM.

RAM placed system should be bought together, in the same package. The manufacturers sync them up to work better together - so your best bet is to sell what you have and buy a package of two sticks of 4GB.

You -can- mix RAM, but you never want to. You're just degrading your machine's performance.

 

[Stupiditystrikes]

Do not approve. Should never mix different voltages/timings.
Best to play it safe and buy same brand/volgate/timing.