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post #1 of 5 (permalink) Old 11-01-2019, 02:39 AM - Thread Starter
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9900KS Memory Speeds

Does anyone have a 9900KS running with high memory speeds? Or have anyone seen a post or video about this?
I wonder because I planned to run a 9900K with 4133Mhz memory (4 sticks of 8 GB) - now with 9900KS arrived I think about going for that.
though bios updates and compability might me different between the two, and the OC results on RAM could be similar, better or even worse than that off 9900K - so I want to make sure before I buy the 9900KS that it will have at least the same chance as the 9900K to achieve 4133MHz speeds on the Ram.
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post #2 of 5 (permalink) Old 11-01-2019, 11:48 AM
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the 9900KS is a 9900K with a different multiplier. there is no reason to think it'll handle RAM any differently.

if you can run 4 sticks of RAM at 4133 or not depends on your motherboard anyway, the 9900K's IMC doesn't top out until well over 4133.

Intel i9 9900K Coffee Lake @ X8 5309mhz (+47.5%)
AMD FX-8320 Vishera @ X4 5022mhz (+43.5%)
Intel i5 4690K Haswell @ X4 5013mhz (+43.2%)
AMD X4 960T Zosma @ X6 4870mhz (+62.3%)
Intel i7 6700 Skylake @ X4 4709mhz (+38.5%)
Intel i5 6400 Skylake @ X4 4588mhz (+69.9%)
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post #3 of 5 (permalink) Old 11-08-2019, 04:00 PM
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Hi!

I got a Asus Maximus XI Extreme and a 9900K my 32gb 4.133 17-17-37 runs max with 3.900 17-17-37.

With the 9900KS i can use the full 4.133 17-17-37 (24+ hours run with hci memtest pro)

But i need much higher of voltages than the 9900k needed for 3.900mhz.

BTW: the KS handels the ram completly different - on the 9900k XMP I Profile worked.

With the 9900KS only XMP II Profile will work AND Asus MemOk! must be disabled onboard,
because it cause boot loops.

But now the system runs perfect stable - wish it will do this with less voltages...
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post #4 of 5 (permalink) Old 11-10-2019, 11:46 AM
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What overclocking the IMC will top out at above intel stock specifications of DDR4-2666 will vary do to silicon fab quality.

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post #5 of 5 (permalink) Old 11-15-2019, 09:15 PM
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Just set up a 9900ks with a Xl Gene and 2x8GB G.Skill 4400cl19. My guess is it will perform well with 4 sticks, in the right board
Boots and no errors at 4700MHz but dialed it back to 4600MHz
My first impression is pretty positive
Edit: Just finished so the io and sa are yet to be lowered
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