overclocking DDR5

[JoHeJo06]

hello,

ive never overclocked any ram, i wouldnt know how to do it but ill figure it out.  im going to buy either Corsair DDR5 Vengeance RGB 2x16GB 5600, Kingston DDR5 Fury Beast RGB 2x16GB 5600 or G.Skill DDR5 Trident Z5 RGB 2x16GB 5600MHz.

they are all cl36.

if i overclock them, what performance should i get out of it?

which kit will be better?

[RONOTHAN##]

So before I answer any of this, I just want to preface this by saying there are 3 different memory ICs you can get currently in the 5600MT/s CL36 bins: Hynix A die, Hynix M die, and Samsung B die (DDR5, nothing like the DDR4 version). All of the different ICs have different overclocking characteristics to them. Samsung B die doesn't clock that well, it tops out somewhere between 6400 and 6600MT/s depending on the kit assuming a good motherboard, and it does very mediocre subtimings with its only good timing being tRCD. Hynix A die clocks insanely well, with most kits on good motherboards being able to go into the range of 8000MT/s, and for the most part are CPU and motherboard limited, with subtimings that still aren't amazing but are better than Samsung. Hynix M die clocks pretty high, topping out at about 7000-7200MT/s with a good kit, motherboard, and CPU, does very tight subtimings, and the only bad timing it has is tRCD. 

 

No matter what, you want a Hynix based IC, they're both really good for daily operation, though the specific one you want depends on the CPU and motherboard you have, since A die only makes sense when it can be clocked super high. If you're on Intel with a high layer count/1DPC Z690 board or a Z790 board, A die is the way to go. If you're on a low layer count Z690 board or on AM5, you want M die.

 

21 minutes ago, JoHeJo06 said:

which kit will be better?

Given all their binning statistics, the G.Skill kit will almost certainly be Samsung, the Corsair kit will probably be Samsung though has a chance to be Hynix (relatively small though, don't count on it), and Kingston for whatever reason hates Samsung so it's pretty likely to be Hynix based. It's more than likely an M die based kit, but it's not unheard of to be M die. 

 

If you're able to look at the kits before buying them though, either you're buying them used off eBay or getting them in person at say a Micro Center, all of their labels will tell exactly what memory IC is on the kit so you can figure out what would be the best option for you. G.Skill has a label that's the coded IC on them, it will have the last 4 digits be something like "820A", "821M", or "810B". All that matters is from that snippet the 2nd digit and the letter at the end. The digit is the manufacturer (1=Samsung, 2=Hynix, 3=Micron) and the letter tells the die revision. Corsair kits have a Version number on them that goes very much in the same direction. The first digit in the version number is the manufacturer (3=Micron, 4=Samsung, 5=Hynix), and while there is likely a way to tell specifics for the other parts, there isn't enough info out there for the DDR5 version of the version numbering to tell for certain what it will be (DDR4 was pretty easy to tell), all I know is 4.43.13 is Samsung B die and 5.43.13 is Hynix M die (at least the kit of M die I've got is labeled as 5.43.13). Kingston is not as verbose about it, you can only tell the manufacturer, but there will be a code on the stick that starts with "EOM", with the next digit following that being the manufacturer (H=Hynix, M=Micron, S=Samsung). If you're able to do this, you can get good overclocking memory even in the super cheap bins like 5200 CL40 if you want to save a bit of money (the kit of M die I have is in a 5200 CL40 Corsair Vengeance bin I got on eBay), but if you can't do that, go for the Kingston kit since it's the most likely to be something Hynix based. 

[JoHeJo06]

2 hours ago, RONOTHAN## said:

So before I answer any of this, I just want to preface this by saying there are 3 different memory ICs you can get currently in the 5600MT/s CL36 bins: Hynix A die, Hynix M die, and Samsung B die (DDR5, nothing like the DDR4 version). All of the different ICs have different overclocking characteristics to them. Samsung B die doesn't clock that well, it tops out somewhere between 6400 and 6600MT/s depending on the kit assuming a good motherboard, and it does very mediocre subtimings with its only good timing being tRCD. Hynix A die clocks insanely well, with most kits on good motherboards being able to go into the range of 8000MT/s, and for the most part are CPU and motherboard limited, with subtimings that still aren't amazing but are better than Samsung. Hynix M die clocks pretty high, topping out at about 7000-7200MT/s with a good kit, motherboard, and CPU, does very tight subtimings, and the only bad timing it has is tRCD. 

 

No matter what, you want a Hynix based IC, they're both really good for daily operation, though the specific one you want depends on the CPU and motherboard you have, since A die only makes sense when it can be clocked super high. If you're on Intel with a high layer count/1DPC Z690 board or a Z790 board, A die is the way to go. If you're on a low layer count Z690 board or on AM5, you want M die.

 

Given all their binning statistics, the G.Skill kit will almost certainly be Samsung, the Corsair kit will probably be Samsung though has a chance to be Hynix (relatively small though, don't count on it), and Kingston for whatever reason hates Samsung so it's pretty likely to be Hynix based. It's more than likely an M die based kit, but it's not unheard of to be M die. 

 

If you're able to look at the kits before buying them though, either you're buying them used off eBay or getting them in person at say a Micro Center, all of their labels will tell exactly what memory IC is on the kit so you can figure out what would be the best option for you. G.Skill has a label that's the coded IC on them, it will have the last 4 digits be something like "820A", "821M", or "810B". All that matters is from that snippet the 2nd digit and the letter at the end. The digit is the manufacturer (1=Samsung, 2=Hynix, 3=Micron) and the letter tells the die revision. Corsair kits have a Version number on them that goes very much in the same direction. The first digit in the version number is the manufacturer (3=Micron, 4=Samsung, 5=Hynix), and while there is likely a way to tell specifics for the other parts, there isn't enough info out there for the DDR5 version of the version numbering to tell for certain what it will be (DDR4 was pretty easy to tell), all I know is 4.43.13 is Samsung B die and 5.43.13 is Hynix M die (at least the kit of M die I've got is labeled as 5.43.13). Kingston is not as verbose about it, you can only tell the manufacturer, but there will be a code on the stick that starts with "EOM", with the next digit following that being the manufacturer (H=Hynix, M=Micron, S=Samsung). If you're able to do this, you can get good overclocking memory even in the super cheap bins like 5200 CL40 if you want to save a bit of money (the kit of M die I have is in a 5200 CL40 Corsair Vengeance bin I got on eBay), but if you can't do that, go for the Kingston kit since it's the most likely to be something Hynix based. 

alright, i will use an AM5 (B650E) system tho, i heard they cant overclock memory as well as Z790.

is this going to change anything? 

[RONOTHAN##]

3 minutes ago, JoHeJo06 said:

alright, i will use an AM5 (B650E) system tho, i heard they cant overclock memory as well as Z790.

is this going to change anything? 

It just means that ideally you want to get a kit of M die rather than A die, though it's not like getting A die is bad, just not as good as M die with tRDRD, tRFC, and a couple other timings. AM5 memory overclocking is a bit weird since it hits a wall with frequency super hard, so while the memory controller is relatively behaved compared to Alder Lake, don't be expecting anything much faster than 6200MT/s without a ton of erroring. On Raptor Lake the limit is more in the 7000MT/s range with M die and 8000MT/s with A die (assuming good motherboards), which is why it's said to not overclock as well, though AM5 doesn't has as weird behavior at those high memory speeds that Intel chips do, so there's pros and cons to each platform. 

[JoHeJo06]

23 minutes ago, RONOTHAN## said:

It just means that ideally you want to get a kit of M die rather than A die, though it's not like getting A die is bad, just not as good as M die with tRDRD, tRFC, and a couple other timings. AM5 memory overclocking is a bit weird since it hits a wall with frequency super hard, so while the memory controller is relatively behaved compared to Alder Lake, don't be expecting anything much faster than 6200MT/s without a ton of erroring. On Raptor Lake the limit is more in the 7000MT/s range with M die and 8000MT/s with A die (assuming good motherboards), which is why it's said to not overclock as well, though AM5 doesn't has as weird behavior at those high memory speeds that Intel chips do, so there's pros and cons to each platform. 

originaly i wanted to have my ram to run at 6000mhz cl36, but then i realised the fact that i could just overclock it.

if i buy a 5200mt/cl32 kit with hynix dies, is there a big chance i can overclock it to 6000 mhz?  (cl36 is good enough at 6000.)

[RONOTHAN##]

35 minutes ago, JoHeJo06 said:

originaly i wanted to have my ram to run at 6000mhz cl36, but then i realised the fact that i could just overclock it.

if i buy a 5200mt/cl32 kit with hynix dies, is there a big chance i can overclock it to 6000 mhz?  (cl36 is good enough at 6000.)

Yeah, both Samsung and Hynix based kits can easily do 6000MT/s with a bit extra voltage. Heck, even the 5200 C40 kit I've got with M die can boot 7000 CL30, though is only stable at CL 34. 

[JoHeJo06]

1 hour ago, RONOTHAN## said:

Yeah, both Samsung and Hynix based kits can easily do 6000MT/s with a bit extra voltage. Heck, even the 5200 C40 kit I've got with M die can boot 7000 CL30, though is only stable at CL 34. 

thank you for explaining man.  it was all very clear and helpfull.

i learned a lot.