Skylake-X Lineup Leaked: i9-7980XE 18 Core Flagship Processor

WingZero30 · 12 May 2017 at 19:52

Armageus said:
Calling shenanigans purely based on L3 cache sizes - no other chips have anything other than whole MB's of cache, and can't see how it would work (even if they were harvested from Xeons with more cores e.g. 24 core or 20 core chips) :

Core i9-7920X - 12C/24T - 16.5MB L3
Core i9-7900X - 10C/20T - 13.75MB L3
Core i9-7820X - 8C/16T - 11MB L3
Core i9-7800X - 6C/12T - 8.25MB L3
Core i7-7740K - 4C/8T - 8MB L3
Core i7-7640K - 4C/4T - 6MB L3

The Skylake-X is derived from Skylake-SP Xeon (Purley) and has a new cache structure (1MB L2 & 1.375MB L3 cache per core)

https://techreport.com/forums/viewtopic.php?t=119394

First: Each core now has not 256KB, not 512KB, but 1MB for the L2 cache.
Second: Each slice of the L3 cache is now only 1.375MB compared to 2.5MB in Broadwell Xeon & Broadwell HEDT parts.

The L2 cache has increased from 256KB per core on Broadwell-E to 1MB on Skylake-X. Whilst the L3 cache has been reduced from 2.5MB per core on Broadwell-E to 1.375MB on Skylake-X.

If we divide the Skylake-X cpus total L3 cache by number of cores we get 1.375MB L3 cache per core:

Core i9-7920X - 16.5MB /12C = 1.375MB L3
Core i9-7900X - 13.75MB /10C = 1.375MB L3
Core i9-7820X - 11MB /8C = 1.375MB L3
Core i9-7800X - 8.25MB /6C = 1.375MB L3

Hence the L3 cache sizes are correct

RSR · 12 May 2017 at 20:38

The rumoured pricing for these seems interesting, I wasn't a millions miles out

Vladislav · 12 May 2017 at 20:47

What is the rumoured pricing?

X-Mikuru_Beam-X · 12 May 2017 at 21:00

I wonder how much the 7820X is

GAC · 12 May 2017 at 21:01

intel cant come out with something costing much more over amd's price/perf or they just wont shift them. so will be interesting where these do end up priced.

Vladislav · 12 May 2017 at 21:07

If 7820x 8 core will be 1000£ again it will be a big fail. I can imagine now Intel 8 core is 1000£, 10 core 1500£ and 12 core 2000£! How about that of a plot twist?

muon · 12 May 2017 at 21:09

Turbo 3.0 = XFR?

muon · 12 May 2017 at 21:11

Vladislav said:
If 7820x 8 core will be 1000£ again it will be a big fail. I can imagine now Intel 8 core is 1000£, 10 core 1500£ and 12 core 2000£! How about that of a plot twist?

Looks like Intel have segmented their i9 products by cores rather than clockspeed.

I don't see a 1700 competitor amongst the bunch and no doubt the 7820X will be far above the 1800X in price.

WingZero30 · 12 May 2017 at 21:13

Vladislav said:
If 7820x 8 core will be 1000£ again it will be a big fail. I can imagine now Intel 8 core is 1000£, 10 core 1500£ and 12 core 2000£! How about that of a plot twist?

Indeed. I am hoping and expecting that this time Intel price these X299 cpus more competitively considering that AMD rumoured HEDT X399 is also coming. If intel stick to old pricing model, I don't think they will sell many.

muon · 12 May 2017 at 21:14

Intel will have the IPC benefit over X399 as well as what looks like higher clockspeeds.

RavenXXX2 · 12 May 2017 at 21:15

RSR · 12 May 2017 at 21:21

Vladislav said:
What is the rumoured pricing?

7290X - $1499
7900X - $999
7820X - $599
7800X - $399

RSR · 12 May 2017 at 21:23

X-Mikuru_Beam-X said:
I wonder how much the 7820X is

As above $1499.

X-Mikuru_Beam-X · 12 May 2017 at 21:23

RSR said:
7290X - $1499
7900X - $999
7820X - $599
7800X - $399

What's that in UK rip-off price?

RSR · 12 May 2017 at 21:23

This can't be right, as only the 10 and 12 core option have the full 44 PCIe lanes. :eek:

RSR · 12 May 2017 at 21:24

X-Mikuru_Beam-X said:
What's that in UK rip-off price?

Change the $ to a £

DragonQ · 12 May 2017 at 21:24

eddyr said:
Equally, why not. Highend Z270 and X99 prices overlap in the £200-350 range. You will probably be looking at a ~£350 entry price onto the HEDT platform for board+cpu with plentiful upgrade options, which will appeal. Mainstream is maxed out at 4c8t (or soon - mid 2018? - at 6c/12t). There are plenty of mainstream buyers for which 4 cores is a minimum spec. i3's don't factor into their purchase considerations. Gives them an attractive Intel alternative to AMD along with the esteem of the HEDT line and the clockspeed of Kabylake.

I don't get it. Who are these people who want to spend £350 on a 4c/4t CPU on an HEDT platform when they can get a much better system on either company's mainstream platform? Also the mainstream 6c/12t CPUs are due this year, not mid-2018, plus Ryzen already offers that on a mainstream platform.

eddyr said:
I wouldn't expect 4 cores to remain on the HEDT platform on the next round of releases after 6 cores have hit mainstream.

That's the thing, they're probably going to come out at roughly the same time, which makes it even more puzzling.

muon · 12 May 2017 at 21:25

RSR said:
7290X - $1499
7900X - $999
7820X - $599
7800X - $399

That actually wouldn't be terrible pricing. I find it hard to believe.

RSR · 12 May 2017 at 21:29

muon said:
That actually wouldn't be terrible pricing. I find it hard to believe.

Agreed, but I guess these are only rumours and we also don't know what AMD has to offer for the HEDT and their pricing.

GAC · 12 May 2017 at 21:30

muon said:
That actually wouldn't be terrible pricing. I find it hard to believe.

depends how they run performance wise