Oddity With RAM Bandwidth After Upgrading to 16GB

[Eluder]

Just wondering if anyone can comment on the below screenshots.
I just upgraded to 16GB of G.Skill DDR3-1600 (4 DIMMs from 2) and noticed that CPU-Z reports the max bandwidth as being DDR3-1333 which is strange as I'm using the same kit for both sets of 8GB RAM.

Is this normal for CPU-Z to report, or do I have an issue somewhere? I'm using the XMP setting in the BIOS, so everything should be pulling from the SPD.

Note, that Slot 1 is the new memory, and Slot 2 is the old memory. Slot 3 reports the same as Slot 1, while Slot 4 reports the same as Slot 2.

System specs as filled out in the board's control panel if you require more info.

Thanks.

[LarkStarr]

Probably doesn't matter, I think that info is just pulled off of the chip.

[enaberif]

Considering spec wise everything is different I would wager to say you have different sets of memory.

[Eluder]

That seems very odd as they are the same part number, no?
Guess I should be contacting G.Skill about this.

[ilya]

Originally Posted by Eluder

That seems very odd as they are the same part number, no?
Guess I should be contacting G.Skill about this.

It happens even when you have consecutive serial numbers with back to back kits. Which is why some techs strongly recommend against mixing ram kits. I've personally never had an issue though.

[Eluder]

Spoke to G.Skill, they said I shouldn't use XMP unless I'm using only a single kit.
They recommended I switch to manual and check the Memory tab instead, which does show DDR3-1600 and the correct timings, so I think everything is ok.

[10e]

Yeah that's what I would recommend, so why didn't you ask me? LOL n00b

[Eluder]

Cause I didn't feel like it? :P

[kosmic]

To make sure I understood correctly, you added another ram kit of the same p/n upgrading from 8GB to 16GB?

For adding info to your thread, I did that also, passing from 6GB triple to 12GB triple and I've been told by G.Skill tech that mixing two kits of performance ram is never a good idea and could cause missing capacity, errors to not working periode.

I was kinda in shock when I read my PM's.

[kosmic]

Here's the PM for reference. I hope it's ok with G.Skill tech to post PM without any pers info.

Originally Posted by GSKILL TECH

The memory can work, but only as a single kit. It can be difficult to achieve rated specifications with two kits. Some times you can have missing capacity, they don't work well at high frequency, and other times they don't work at all together. So it is generally not recommended to attempt two high performance kits.

You can give it a shot, but it is not guaranteed.

Thank you
GSKILL TECH

My kits P/N: F3-16000CL9T-6GBRH 9-9-9-27 1.6v for a total of 12GB.