Kingston HyperxFury 1866 MHz CL 10 and 1600 MHz CL 10.

[imamon]

I have one stick of 4 GB Kingston HyperX Fury 1866 Mhz CL 10 (HX318C10F/4) in my motherboard (Gigabyte H81M-S1 with an intel - i5 4440 processor) that automatically runs at 1600 MHz CAL 9 at 1.5v. I ordered another stick of 4 GB ram of the same specification, but received a 1600 MHz CAL 10 (HX316C10F/4) stick instead.

I think I should return it but the release of Witcher 3 is imminent so my gamer heart is in dilemma.

What I want to know is what if I use both the ram sticks, what frequency would they run at? Would it be 1600 Mhz CAL 10 at 1.5v (no experience at adjusting voltage)? Would there be any visible performance up/down?

 

[MarkW]

If you bought the memory from a place where you know you can return it if it does not work in your system, then I would drop this in and see what happens. The 1866 speed will be forced down to 1600. And the memory controller will be trying to find settings where it can talk to both sets of memory using one common setup. What we cannot know ahead of time is what it will decide is best. And there is only one way to find out.

If it works and passes stress testing, you have more memory in your system. If it doesn't boot, or fails stress testing, then return it and tell them that its not what you ordered and did not work in your system.

I did a side-by-side comparison of their specs... My best guess is that this has about as good odds of working as any two different sets I have ever seen. But that doesn't mean much. Only your system can decide if it likes it.

 

[imamon]

If you bought the memory from a place where you know you can return it if it does not work in your system, then I would drop this in and see what happens. The 1866 speed will be forced down to 1600. And the memory controller will be trying to find settings where it can talk to both sets of memory using one common setup. What we cannot know ahead of time is what it will decide is best. And there is only one way to find out.

If it works and passes stress testing, you have more memory in your system. If it doesn't boot, or fails stress testing, then return it and tell them that its not what you ordered and did not work in your system.

I did a side-by-side comparison of their specs... My best guess is that this has about as good odds of working as any two different sets I have ever seen. But that doesn't mean much. Only your system can decide if it likes it.

Thank you for your reply.

My motherboard does not support ddr3 ram above 1600 MHz frequency, but with that kingston hyperx ram, it auto-adjusted itself to 1600MHz/CAL9 at 1.5v and has performed well.

I guess I'd have to return it since the chance that the pair may or may not work is way too high.

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