PC3-12800 shown as 10700

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vibrato

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I have a khx1600c10d3b1 module. Supposedly it runs at 1600Mhz, but cpuz said 1333. I went to the bios setup and set the multiplier to 16 from the list, instead of auto and now it shows 800 (1600) correctly.

The problem is that it always shows PC3-10700 regardless... Is there something wrong? Why cant it recognize it? https://snag.gy/ns06kH.jpg

I also wonder, I set 16 multiplier easily. Could I set it to something else like 20? Is that overclocking it just wouldnt work?

Thanks
 
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SkyBill40
To be honest, it's a mixed bag point and there's no perfect answer. The differences in latency between what the RAM runs at be default and what you'd need to change it to in order to run at 1600 is so minimal it's not even worth discussing.
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SkyBill40

SkyBill40

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Here's the data sheet for your module from Kingston:

https://www.kingston.com/datasheets/khx1600c10d3b1_8g.pdf

From that sheet:

"This module has been tested to run at DDR3-1600 at a low latency timing of 10-10-10 at 1.5V. The SPD is programmed to JEDEC standard latency DDR3-1333 timing of 9-9-9 at 1.5V. This 240-pin DIMM uses gold contact fingers. "

So, by default, it's tested to run at the DDR rate of 1600 though by default (and until you change the timings to run at the higher speed) it runs at DDR 1333. Anything above any beyond that is either unlikely to work or would require additional tweaking in terms of timings and voltage. Doing so puts you at risk for toasting your module(s). Be careful.
 
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So if I leave it at 1333 it will have a latency of 9, but if I change it to 1600 it will have a latency of 10.

Which case is better? I dont understand very well this.
 
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SkyBill40

SkyBill40

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The performance difference is likely to be negligible at best, but seeing it's tested to run at the higher rated SPD settings you may as well go ahead and do so. At most, you may get an additional 1-2 FPS but even that may be a stretch. There's not a whole lot of difference between 1333 and 1600 to be honest.
 
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My question was more aimed at what would be quicker, more Mhz but less latency or viceversa. I have read that less latency is faster, but at same time more Mhz is faster, so what case would be the best to have?
 
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SkyBill40

SkyBill40

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To be honest, it's a mixed bag point and there's no perfect answer. The differences in latency between what the RAM runs at be default and what you'd need to change it to in order to run at 1600 is so minimal it's not even worth discussing.
 
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Could you tell me if my current module would work with a HX316C10F one? I want to add a second module but all there is in the market about kingston hyper x is this one. Is this module better than the one I have in any way?

Thanks
 
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DSzymborski

DSzymborski

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Mixing RAM is always a crapshoot. And if you do mix, even if it works, it'll clock to the lower of the two, in this case your module you have running at 1333.
 
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