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post #11 of 679 (permalink) Old 07-07-2019, 10:34 PM
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you missed something on your work.

bios given to press (the ones approved by AMD) are defective.

Here is the proof that it works as advertised with proper bios in use :

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post #12 of 679 (permalink) Old 07-08-2019, 12:12 AM
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Some more on latencies, another confirmation that there are no 'penalties' for communications between chiplets. Even within a chiplet the CCX communications are already done through the I/O die. https://twitter.com/0x22h/status/1147863835161722881

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post #13 of 679 (permalink) Old 07-08-2019, 01:24 AM
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post #14 of 679 (permalink) Old 07-08-2019, 01:32 AM
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post #15 of 679 (permalink) Old 07-08-2019, 01:51 AM
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Thanks Stilt, invaluable information. Looks like in example 3800X will be hard to launch in any numbers as the specs are too optimistic out of the box. 3950X even more so, but it is at least officially delayed in launch.

I think the only star in this launch is the 3600, great price/performance!

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post #16 of 679 (permalink) Old 07-08-2019, 02:19 AM
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post #17 of 679 (permalink) Old 07-08-2019, 02:34 AM
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great work Roger!
did you tested also PBO level 3/4, is there somethig like this what we know from C7H and Pinnacle Ridge? Thank you.

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post #18 of 679 (permalink) Old 07-08-2019, 02:55 AM
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Good job as usual, thanks
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post #19 of 679 (permalink) Old 07-08-2019, 03:08 AM
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@The Stilt , interestingly a friend of mine who's been playing around with a 3600 and a couple x570 mobo's found that you really need to tune to get the IF speed to be half the memory speed and it makes a big difference in latency, read and write speed for the memory and assist with overall performance.

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post #20 of 679 (permalink) Old 07-08-2019, 03:12 AM
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Quote: Originally Posted by VPII View Post
@The Stilt , interestingly a friend of mine who's been playing around with a 3600 and a couple x570 mobo's found that you really need to tune to get the IF speed to be half the memory speed and it makes a big difference in latency, read and write speed for the memory and assist with overall performance.

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I'm not understanding this. Isn't that is what we are trying to avoid by staying at or up to 3733MHz or just use 3600MHz and lower?

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My 2.5 years old delidded 7980xe @ 4600mhz all core with 49ns memorylatency (4000c16 twekaed) is faster than 3950x max overclocked on water in every scenario. Pretty good for a ancient cpu
In gaming it has no chance vs my new 10900k @ 5400mhz and 4600c16 tweaked memory. ~35ns memorylatency.
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