4GB and 8GB RAM problem !

Marwan Abd El-Ghany · Jan 28, 2015

hello!
i want to upgrade my pc ram i have:
core i 5 CPU 760 @ 2.80GHz
AMD Radeon HD Power Color 5550
Kingston HyperX FURY Blue 4GB DDR3 (not sure if it 1600MHz or not) cpu z screenshot : http://postimg.org/image/jed9csxj9/

i want to buy HyperX FURY Blue 8GB DDR3 1600MHz ....but I heard some people say when there 2 different ram in the pc it make problems and bottleneck
so please is will be any problem or not?

4745454b · Jan 28, 2015

The problem isn't a bottleneck, but different settings on the ram COULD lead to problems. If the 4GB stick has settings of 9-9-9-27 and the 8GB stick is 11-11-11-30, then you MIGHT have issues getting it to run. Manually setting the ram timings in the bios will fix this. (I'd use 11-11-11-30 @ 1600MHz in this example.) You'll probably be fine with no problems, but it's possible you'll have a boot issue.

hardikkchavda · Jan 28, 2015

Ram with different vendors or with different Mhz. Likevise 1600MHZ with 1333. Creates probems. So go for it. With similar architecture, vendor and MHZ, there will be no problem at all.

Vlad Rose · Jan 28, 2015

Are these both single sticks of RAM? If so, that could pose some performance issues for dual-channel, depending on the motherboard chipset. The motherboard has to support what is called flex mode, which the capacity that can be matched is run in dual-channel, while the remainder runs in single-channel.

http://en.wikipedia.org/wiki/Multi-channel_memory_architecture

Marwan Abd El-Ghany · Jan 28, 2015

hardikkchavda :

Vlad Rose :

i have 4 slots for the ram my motherboard is GA-P55-USB3L....but not sure if my 4GB ram was 1600MHz this a screenshot for cpu Z

so shall i buy the 8GB DDR3 1600MHz?

Tradesman1 · Jan 28, 2015

Looks like a 1333 stick, and also the Fury line operates on off PnP and may be problematic with your P55 chipset. They are compatible with the P67/H67 and newer mobo chipsets

Marwan Abd El-Ghany · Jan 28, 2015

Tradesman1 :

i can't understand !! but i have 4GB fury and it works

Tradesman1 · Jan 28, 2015

Glad to hear!

hardikkchavda · Jan 28, 2015

Remove 4 gb sell it or buy back and get a pair of 8 gb means 8 x 2 =16. Forget other things.
and if not then keep only 8 gb module. that will be enough.

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4GB and 8GB RAM problem !

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