Thursday, June 15th 2017

Underside of AMD Ryzen Threadripper Pictured

AMD Ryzen Threadripper is a really big processor, and here's what its underside looks like. A multi-chip module (MCM) of two eight-core "Summit Ridge" dies, it is also AMD's first client-segment processor to feature a land-grid array (LGA) socket interface, since the decade-old Athlon64 FX 72; with the pins being located on the motherboard, and contact-points on the CPU package. Until now, AMD has limited large LGA sockets to its enterprise processors. The processor is based on the 4,094-pin socket SP3r2, which is increasingly being referred to by motherboard and cooler manufacturers as "TR4."

Given that it is an MCM of two dies, you can see a clear dividing line between two groups of the contact points that make up the total pin count of 4,094 pins. There are also two distinct ancillary cutouts which holds critical electrical components for the dies above. Something like this is lacking on the socket AM4 Ryzen "Summit Ridge" processors, where the cutout is blank, and the ancillaries are located around the CPU die, on the other side of the fiberglass substrate. AMD Ryzen Threadripper could be available from 27 July.

Source: Austin Evans (Twitter)
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34 Comments on Underside of AMD Ryzen Threadripper Pictured

#1
cdawall
where the hell are my stars
Fx 70/72/74 are the first "client grade" cpus amd delivered in LGA.
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#2
Chaitanya
Even the socket is unusual for these CPUs, I think this is the first time I have seen a allen key used to install/remove CPU from socket.
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#4
newtekie1
Semi-Retired Folder
cdawall said:
Fx 70/72/74 are the first "client grade" cpus amd delivered in LGA.
That's a big gray area, IMO. Since you still needed a workstation board to use those processors, so I'd actually say they were still workstation CPUs, not client class.
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#5
cdawall
where the hell are my stars
newtekie1 said:
That's a big gray area, IMO. Since you still needed a workstation board to use those processors, so I'd actually say they were still workstation CPUs, not client class.
Cpu itself was not targeted at workstation users though... Big Gray area. Those definitely client chips.
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#6
Dj-ElectriC
The source is actually Austin Evans' twitter, btw
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#7
Caring1
Keep this up and the CPU will be bigger than the Motherboard eventually :p
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#8
VulkanBros
Bigger cooling surface - better cooling
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#9
btarunr
Editor & Senior Moderator
cdawall said:
Fx 70/72/74 are the first "client grade" cpus amd delivered in LGA.
How could I forget that. Thanks, updated.
Posted on Reply
#10
FYFI13
Caring1 said:
Keep this up and the CPU will be bigger than the Motherboard eventually :p
My first thought was, "oh, just slap one chip of HBM2 memory and a LCD on it and we'll have a nice AIO PC" :D
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#11
P4-630
The Way It's Meant to be Played
VulkanBros said:
Bigger cooling surface - better cooling
2 dies, 2 CPU coolers... :D
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#12
DeNeDe
buggalugs said:
This thing is huge.
That what she said :peace:
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#14
Live OR Die
AMDs thinks to them self..... now pins on CPU or MB umm bent pins on a $300 part or bent pins on a $800 part..... we better change our crappy design this time around.
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#15
Aquinus
Resident Wat-man
Live OR Die said:
AMDs thinks to them self..... now pins on CPU or MB umm bent pins on a $300 part or bent pins on a $800 part..... we better change our crappy design this time around.
It makes a lot more sense when the cost of the CPU starts to go above the cost of the motherboard. What would you rather replace? A $300 CPU or a $150 motherboard? Then consider a more expensive CPU on a newer platform where your options are a $800 CPU or a $300 motherboard? I personally like LGA because I think it's a better method of holding the CPU in place by clamping it down as opposed to relying on the clamping down on the pins themselves which puts stress on the pins and contacts rather than the heatspreader.
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#16
EarthDog
Its huge!!!!! Lol! What existing cooler fits that?!!!!
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#18
Gasaraki
Chaitanya said:
Even the socket is unusual for these CPUs, I think this is the first time I have seen a allen key used to install/remove CPU from socket.
Laptops use a key to lock in the cpu.
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#19
DeathtoGnomes
Caring1 said:
Keep this up and the CPU will be bigger than the Motherboard eventually :p
When that day comes, we'll also be using microSD cards for L1/L2/L3 cache expansion. :p
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#20
Live OR Die
Aquinus said:
It makes a lot more sense when the cost of the CPU starts to go above the cost of the motherboard. What would you rather replace? A $300 CPU or a $150 motherboard? Then consider a more expensive CPU on a newer platform where your options are a $800 CPU or a $300 motherboard? I personally like LGA because I think it's a better method of holding the CPU in place by clamping it down as opposed to relying on the clamping down on the pins themselves which puts stress on the pins and contacts rather than the heatspreader.
Lol my point, LGA should be a standard by now but AMD still wants to use crap intel used for Pentium 1.
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#21
Steevo
Live OR Die said:
Lol my point, LGA should be a standard by now but AMD still wants to use crap intel used for Pentium 1.
Biggest issue with LGA is the contact surface and how much power it can handle as pins get smaller, in a compressed pin and socket arrangement the contact area is much higher VS pins touching a surface.
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#22
yogurt_21
...wheres the pic of the amd exec making fun of kentsfield because it was two cpus slapped on the same die?

this looks like two cpus slapped together...
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#23
cdawall
where the hell are my stars
EarthDog said:
Its huge!!!!! Lol! What existing cooler fits that?!!!!
Possibly the noctua ones aimed at G34 if so that is awesome I already have two air coolers and two waterblocks
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#24
jasonelmore
yeah LGA has it's downsides. It' cant draw as much current per node as AMD's old PIN System could.. Your going from a 3 Dimensional contact, to a 2d contact.
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#25
Arjai
Methinks, It is one big piece but, twice the size, right? But rather than fuck around with changing the cpu socket, they just laid two together. Hence the line in the middle making it "look" like two Cpu's Gorilla glued together.

Look closely at the pic. it is not two of the same, mirrored.
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