Tuesday, May 22nd 2018

Possible Intel 8-core LGA115x Processor Surfaces on SANDRA Database

That Intel bringing 8 cores to the mainstream-desktop (MSDT) platform is more than a rumor now, as a curious-looking SiSoft SANDRA database entry suggests. An anonymous source submitted benchmark results of a processor with 8 cores, 16 threads, 256 KB of L2 cache per core, and 16 MB of L3 cache; clocked at 2.60 GHz (prototypes and engineering-samples are usually clocked low). This can't be i7-5960X or the i7-6900K, because the HEDT chips pack 20 MB of L3 cache. The more recent i7-7820X packs 11 MB of L3 cache, with 1 MB per core of L2 cache. It's conceivable that an MSDT chip could retain the cache hierarchy of the current MSDT processors from Intel, with 2 MB L3 cache slices per core, adding up to 12 MB on the i7-8700, for example, explaining the large 16 MB L3 cache on this chip.

The SANDRA numbers suggest similar IPC to the "Coffee Lake" architecture, while a proportionate increase in performance to the increased core-count. The chip scored 96 points with 237.03 GOPS score; 330.64 GIPS Dhrystone integer, 194.46 GFLOPS Whetstone single-precision floating-point; and 148.47 GFLOPS Whetstone double-precision; and 91.45 GOPS/GHz clocks/performance. Intel is rumored to launch an 8-core/16-thread LGA115x processor, possibly paired with its upcoming Z390 Express chipset, and possibly based on its new 10 nm silicon fabrication process; sometime either in 2H-2018 or Q1-2019.
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11 Comments on Possible Intel 8-core LGA115x Processor Surfaces on SANDRA Database

#1
Harry Lloyd
8 cores on 10 nm? I thought that node was supposed to have terrible yields.

Expect 14 nm and ridiculous temperatures without de-lidding.
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#2
R0H1T
Harry Lloyd, post: 3844899, member: 121315"
8 cores on 10 nm? I thought that node was supposed to have terrible yields.

Expect 14 nm and ridiculous temperatures without de-lidding.
Where did you see 10nm? This is probably (still) 14nm, besides 10nm would imply ICL.
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#3
Harry Lloyd
I saw that in this news article. ;)

"and possible based on its new 10 nm silicon fabrication process"
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#4
R0H1T
Harry Lloyd, post: 3844903, member: 121315"
I saw that in this news article. ;)

"and possible based on its new 10 nm silicon fabrication process"
The IPC similar to CFL suggests that it's an 8 core variant of CFL, or whiskeylake, also 10nm yields are terrible. So unless there's been some dramatic improvement in that & ICL (with spectre & meltdown hardwired patches) is only as fast as CFL, I'm guesstimating it can't be 10nm just yet.
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#5
jabbadap
Hmm these are run on Kaby Lake S client platform. So Z370 chipsets might support these 8 core cpus after all. There are results for 6 core coffee lake with Cannon lake Client platform, which would be Z390(Well or any other cnl s; h310, b360, H370, Q370).

Edit. hmm that was mobile platform. There's CoffeeLake client platform with CannonLake client system with should be CNL S chipsets.
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#6
Gungar
I need that 8 cores omg give it to me now pls o_Oo_Oo_Oo_Oo_Oo_Oo_Oo_O
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#7
efikkan
Harry Lloyd, post: 3844899, member: 121315"
8 cores on 10 nm? I thought that node was supposed to have terrible yields.

Expect 14 nm and ridiculous temperatures without de-lidding.
Bad yields can mean a lot of different things. Intel are able to produce good chips on 10 nm, but the amount of good chips are low, so it's a matter of cost.

Intel already make i7-7820X with 8 cores. I don't know the thermal limits of this socket, but it can certainly can consume less power than i7-7820 with a simple memory controller, less cache, no QPI and more basic core infrastructure, and no AVX-512.

R0H1T, post: 3844912, member: 131092"
The IPC similar to CFL suggests that it's an 8 core variant of CFL, or whiskeylake, also 10nm yields are terrible. So unless there's been some dramatic improvement in that & ICL (with spectre & meltdown hardwired patches) is only as fast as CFL, I'm guesstimating it can't be 10nm just yet.
IPC (Instructions Per Clock) will remain unchanged until Ice Lake arrives.
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#8
lynx29
What do you guys think the odds are this chip will work in Z370 mobo's with a BIOS update? My guess is high since it most likely is just 8 core CFL.
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#9
Gungar
efikkan, post: 3845060, member: 150226"
Bad yields can mean a lot of different things. Intel are able to produce good chips on 10 nm, but the amount of good chips are low, so it's a matter of cost.

Intel already make i7-7820X with 8 cores. I don't know the thermal limits of this socket, but it can certainly can consume less power than i7-7820 with a simple memory controller, less cache, no QPI and more basic core infrastructure, and no AVX-512.


IPC (Instructions Per Clock) will remain unchanged until Ice Lake arrives.
Oh? you are expecting a IPC increase ? xD yeah maybe in 10 years.
Posted on Reply
#10
las
Skylake arch @ 14nm+++ (aka 5th gen release using 14nm)

No AVX512

= Meh
Posted on Reply
#11
WikiFM
If it will be released this year it will be 14nm Whiskey Lake, 10nm is not ready yet for mass production, if it will be released in 10nm definitely next year.
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