Hynix c-die/cjr

[TheDankKoosh]

Hey everyone, I wanted to make a topic on any and all information about hynix's newest dram die. I would like to get as much info together to help determine which kits are most definitely c-die and not disguised as other die's. Similar to what the tech community has done for samsung b-die. Any help is appreciated

[SPARTAN VI]

Bumping this because I just installed a 16GB DDR4-3600 CL17 Patriot Viper kit ($85 USD via Prime) that has Hynix CJR (aka C-Die) ICs. Turns out to be a very capable kit! 

 

Stock timings were 17-19-19-39-68. Screenshots below are what Thaiphoon gave me, what I keyed into the Ryzen DRAM calculator, and ultimately what I keyed into my UEFI (ASRock B450 Fatal1ty ITX/AC board). 100% passed memtest86 at 16-19-20-36-56. Then tested 3733 CL16 with 16-20-20-36-56 (IIRC), which POSTed fine. I didn't stress test it at 3733 or 3666 because I saw the Infinity Fabric to DRAM freq ratio decoupled, which increases latency beyond any performance gain at that point. I may try a FCLK overclock soon, but that is a project for another night.

 

[TheDankKoosh]

4 hours ago, SPARTAN VI said:

Bumping this because I just installed a 16GB DDR4-3600 CL17 Patriot Viper kit ($85 USD via Prime) that has Hynix CJR (aka C-Die) ICs. Turns out to be a very capable kit! 

 

Stock timings were 17-19-19-39-68. This is what Thaiphoon gave me, what I keyed into the Ryzen DRAM calculator, and ultimately what I keyed into my UEFI (ASRock B450 Fatal1ty ITX/AC board). 100% passed memtest86 at 16-19-20-36-56. Then tested 3733 CL16 with 16-20-20-36-56 (IIRC), which POSTed fine. I didn't stress test it at 3733 or 3666 because I saw the Infinity Fabric to DRAM freq ratio decoupled, which increases latency beyond any performance gain at that point. I may try a FCLK overclock soon, but that is a project for another night.

 

 

 

Very cool hope to see more testing here soon, I'd love to see some testing at 1.45v with tighter timings, just remember that cjr does not scale trp with voltage

[Viking420]

Been working on these 4GB HYNIX CJR sticks Hyperx fury 

[TheDankKoosh]

3 hours ago, Viking420 said:

Been working on these 4GB HYNIX CJR sticks Hyperx fury 

 

There's a 4Gbit CJR? As far as I know CJR/DJR is 8Gbit only

[Guest]

Here be some information for your thread sir, hope it helps.

 

computing_ds_8Gb_DDR4(C-ver)based_UDIMMs(Rev.1.4).pdf

[Viking420]

5 hours ago, TheDankKoosh said:

There's a 4Gbit CJR? As far as I know CJR/DJR is 8Gbit only

I could show you my SPD read out if youd like 

[Viking420]

I've been struggling with my overclock today unfortunately I'm assuming one of the settings on auto changed on me when restarted this morning 

[Viking420]

Anyone know what cad bus settings might be better than what dram calculator suggests for hynix