Did Corsair just silently put out the best B Die bin on the market? 4000 16-16-16-36 XMP at 1.40v!

GregI · 8 Feb 2021 at 16:14

This is probably a missprint in specs or whatever but I'll leave this just incase.

CMK16GX4M2G4000C16
CMK16GX4M2Z4000C16 (AMD Version)

Seems to have came out late November 2020 and nobody said anything, I found it by pure chance.

This bin seems too good to believe. The thing is I googled the code and elsewhere states it might be 16-16-16-36 at 1.4v but even then this takes the pants off G. Skill's best 4000 16-19-19-39 bin also at 1.4v. I know G. Skill has a 15-16-16-36 bin at 1.5v but this is just on another level.

I refuse to believe they binned 4000 16-16-16-36 at 1.35v or even 1.45v. Anyone willing to put an order in and see what arrives?

Edit: Forum user Wang confirmed these are indeed 4000 16-16-16-36 at 1.40v

GregI · 10 Feb 2021 at 18:04

Yeah that's great, thanks. Hard to say if they did cheap out on the PCB as most of the time the SPD info always states stuff like A0 (8 layers) as they don't bother to change it.

Regardless this is most likely the best bin of b die. If you want to check I know the best bin (TeamGroup 3600C14 ARGB) can run 14-15-15-35 at 1.37v. If you can run that at 1.36v it likely takes the crown.

I would not be surprised if this RAM became the defacto standard for Ryzen now. Here's why:

1: An INSANE XMP profile for people looking to set and forget 2000 FCLK
2: 3800C14 should be very easy. If the TeamGroup/G. Skill bins shown here are doing the tight 3800C14 settings at 1.5v but erroring due to the extra 3080 heat raising temps, this b die bin should be able to reach the same level at around 1.43v and make the 3080 heat a non issue.
3: Availability is good and not a ridiculous price. If any other brand put this on market it would be £300 easy.

GregI · 11 Feb 2021 at 20:31

Jay343434 said:
But I can't understand why it's so cheap and they've not even used it in their flagship ram.

Tbh the price only seems reasonable now because of the current state of the RAM market. Example: In I think it was July 2020 the 16GB 3600C14 Ripped RAM was £100 on offer. You could have theoretically had 32GB for £200. Now compare that to the Corsair price and it makes sense why Corsair is asking this premium. Corsair just basically haven't really added the covid tax.

But yeah if anyone else is just starting out your Ryzen journey like jubei is, the memory discussed here is for people who want to tinker with fabric clocks and memory frequencies both higher and lower (actually I wonder what Intel ocing would be like.... drool). I definitely would not recommend these for set and forget as that is what a 3,600 kit is for.

GregI · 11 Feb 2021 at 21:25

I think I might have just found an even more insane 3,600 bin. Kinda hard to get as not in UK and not a brand I know much about but: ND4U0836144BRADE

3600 14-14-14-34 at 1.40v. Not a ridiculous price either.

GregI · 17 Feb 2021 at 15:06

There's a lot of graphs out there for stuff like this but a typical one below.

Latency sensitive game (Far Cry):

No need to sell that RAM (especially if it's the Patriot Viper you are talking about). Just set to 3600C16 at 1.35v and be done with it.

GregI · 19 Apr 2021 at 15:05

chroniclard said:
Struggling to find decent memory in 2 x 16gb

Same. I would say it was due to brexit making importing harder for companies but even european stores for the memory is reallly bad. The thing is unless I have missed something you can't even buy memory from overlcockers uk sister site caseking as UK delivery is not an option. If I want high tier dual rank memory say 3600 C14 I have been forced to order from the states (had a UK order in since November no stock). Yesterday I got in an order for TeamGroup 2x16GB ARGB White 3600C14 for £300 (delivery hopefully May). Kind of expensive I know but would have been £235 without import fees which is more than fair. Still not too bad for possibly the best dual rank ddr4 kit that will be made and RGB!