Tuesday, September 3rd 2019

LGA 4189 is the Latest Socket for Intel's Next Generation of Xeon CPUs

TE Connectivity, the maker of various kinds of connectivity solutions for computer systems, has released its latest iteration of the LGA socket for the next generation of Xeon Scalable CPUs. Being validated by Intel, the LGA 4189-4 and LGA 4189-5 are going to power the next generation of 10 nm Xeon CPUs, based on the Ice Lake architecture, and up to 56-core 2nd generation Xeon Scalable CPUs. While there are two models of the socket, TE Connectivity didn't reveal what the differences are between them. Socket P4 (LGA 4189-4) and P5 (LGA 4189-5) also feature exactly the same pin count, 0.9906 mm hex pitch and 2.7 mm SP height, so we can only speculate that the "4" or "5" in the revision is supposed to indicate details like higher power delivery capability or support for Ice Lake CPUs.

In addition to providing a new socket for Ice Lake, these sockets have support for PCI-Express Gen 4.0 and eight-channel memory (supported memory configurations are vendor dependent), meaning that we are getting two more memory channels than previous Xeon CPUs with a faster and newer PCIe standard.
Source: AnandTech
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19 Comments on LGA 4189 is the Latest Socket for Intel's Next Generation of Xeon CPUs

#2
AleksandarK
londiste
DDR4 and DDR5?
We still dont know will the server Ice Lake models implement a DDR5 controller.
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#3
jaggerwild
That first picture on the left is some busy, ugly looking shit!
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#4
efikkan
AleksandarK
We still dont know will the server Ice Lake models implement a DDR5 controller.
If this is accurate, DDR5 will arrive early in 2021 with Sapphire Rapids.
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#5
GlacierNine
Worth noting from those renders that they seem to have abandoned the asymmetrical heatsink mounts of the current generation, in favour of 4 conventional screws/threads. I know that all the extreme overclockers hated the old mounts because they couldn't get even pressure, so I'm guessing server manufacturers also considered it a problem if Intel have ditched it.
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#6
john_
Intel: We heard that you hate a new socket for a new series of CPUs, so we present you two sockets for the next series of CPUs.
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#7
notb
john_
Intel: We heard that you hate a new socket for a new series of CPUs, so we present you two sockets for the next series of CPUs.
This is a server platform.
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#8
john_
notb
This is a server platform.
It was a joke.
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#9
xkm1948
Oh look, another Intel news. Let’s bash it first and think later.
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#10
Vlada011
Successor of this platform is mine.
They will need to drop same specifications to mainstream in one moment and because of that I will not pay AMD or Intel 10th Gen Processors.

Exactly as someone sad DDR5 during 2021. Intel I think confirm first 8 octa channel DDR4 in 2020 and DDR5 + PCI-E 5.0 in 2021.

I use some platform minimum 5 years because improvement in mean time is not worth of change everything.
It's much better to buy premium motherboard, premium CPU some good memory and keep longer.
My decision to wait longer on X99 looks like got confirmation much earlier then I thought. I thought during 2020 my decision will look very smart.
Off course it's important to Intel switch on new features even for Server because we are next.
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#11
Berfs1
londiste
DDR4 and DDR5?
It is motherboard dependent, and whether they choose to have one or both types of slots (if it is possible, like with LGA775 boards having both DDR2 and DDR3 slots), but if I am not mistaken, they should only be able to run one type of RAM at the same time, and you can't mix them at the same time if that is the case.
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#12
Vlada011
If I remember some early Z170 motherboards supported DDR3 and DDR4 in same time, I'm not sure.
Or they could do that but decide not to do... something like that.
That was some DDR3L...
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#13
Aerpoweron
There has been an Linus Tech Tips video, which had a LGA1151 socket, and could support 6ht, 7th, 8th and 9th gen CPUs. And had DDR3. They ran a 9900K in that board with DDR3.
So for some reason all Intel CPUs still support DDR3 for some reason, not sure about the Server parts.

Since the new socket has more pins then the previous one, i think it is a good bet, that we get a little more PCI-E lanes in addition to eight-channel memory support.
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#14
king of swag187
Vlada011
If I remember some early Z170 motherboards supported DDR3 and DDR4 in same time, I'm not sure.
Or they could do that but decide not to do... something like that.
That was some DDR3L...
There are quite a few Z170's that support DDR3L officially and DDR3 unofficially. There are even H310 boards that have the 9900K listed in their confirmed working list that only support DDR3(L)
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#15
AMX85
Berfs1
It is motherboard dependent, and whether they choose to have one or both types of slots (if it is possible, like with LGA775 boards having both DDR2 and DDR3 slots), but if I am not mistaken, they should only be able to run one type of RAM at the same time, and you can't mix them at the same time if that is the case.
Memory controller isn't motherboard dependant since AMD K8 and Intel Core i processors, the memory controller is at CPU, also now, main PCIe controller is at CPU, iGPUs at CPU too

greetings
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#16
GlacierNine
AMX85
Memory controller isn't motherboard dependant since AMD K8 and Intel Core i processors, the memory controller is at CPU, also now, main PCIe controller is at CPU, iGPUs at CPU too

greetings
It's motherboard dependent because the slots aren't keyed the same... the motherboard manufacturers make the choice as to whether they utilise DDR3L or DDR4 DIMMs, the Intel Skylake memory controller can handle both.

There are a very small number of motherboards that have both DDR3L and DDR4 DIMM slots, but Berfs1 is quite correct to say that support for one memory type over the other is the motherboard manufacturer's decision.
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#17
Berfs1
AMX85
Memory controller isn't motherboard dependant since AMD K8 and Intel Core i processors, the memory controller is at CPU, also now, main PCIe controller is at CPU, iGPUs at CPU too

greetings
Memory CONTROLLER is not motherboard dependent. Nor did I say it was. What I was referring to when I said "It is motherboard dependent", is the CAPABILITY to use DDR4 and DDR5 (not at the same time), as in having both DDR4 and DDR5 slots on the motherboard, so that if you wanted to upgrade to DDR5, it is literally that easy to upgrade, and you don't need to replace the entire motherboard in order to do that. And in the server field, it saves money and time (which translates to more money) to be able to replace just the RAM, instead of having to replace the motherboard to replace the RAM.
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#18
TheMadDutchDude
FYI: many Z170 boards can support up to and including 9th gen. It was BS from Intel, as always, that it’s “not supported” ...

I don’t see why they need yet another new socket, personally, but that’s just how the business goes when you’re in an Intel environment. It works for them, I guess...
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#19
Berfs1
GlacierNine
It's motherboard dependent because the slots aren't keyed the same... the motherboard manufacturers make the choice as to whether they utilise DDR3L or DDR4 DIMMs, the Intel Skylake memory controller can handle both.

There are a very small number of motherboards that have both DDR3L and DDR4 DIMM slots, but Berfs1 is quite correct to say that support for one memory type over the other is the motherboard manufacturer's decision.
Not just Skylake (and Kaby Lake), although those are the 2 that are officially supporting both DDR3(L) and DDR4, Coffee lake actually functions (not supports, as legally Intel can argue they don't support it because they specifically mentioned CFL supports DDR4 on the spec pages) with both too, but you would need a chinese motherboard that Linus used to get that. Or a 100/200 series board with a CFL CPU. So yea, Coffee Lake is literally Skylake under the hood, with more cores and hardware security fixes. Other than that, the underlying architecture is basically identical, as the IPC doesn't go up from Skylake to 9th gen.

TheMadDutchDude
FYI: many Z170 boards can support up to and including 9th gen. It was BS from Intel, as always, that it’s “not supported” ...

I don’t see why they need yet another new socket, personally, but that’s just how the business goes when you’re in an Intel environment. It works for them, I guess...
No, they don't "support" those CPUs. You have to mod the BIOS and mod some circuitry in order to make it work. Yes, it is DOABLE. However it is NOT SUPPORTED, as in there are no warranties for it. And no, I don't like how Intel forced most people to have to change their motherboards. It was just not necessary.
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