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New Microcode of Skylake X 50654 fixing AVX2/AVX512 performance penalty is coming soon.

restsugavan
Level 14

According to Intel 02007006 microcode DATE 2023-03-06 for Skylake X SKUs ( CPUID 50654 ) patched on R6E 3801 Official BIOS. The microcode above prevented " DOWNFALL " vulnerable issue attack on " GATHER " instruction of Skylake X Series CPU. ( aka Core i9 78XX-7980XE ).

Even it prevented " DOWNFALL " vulnerable issue efficiently but on other hand it cause side effect of Skylake X CPU performance. Specially FPU units those microcode slow down FMA3/AVX2/AVX512 performance penalty 30-50%. 

Now Intel's engineer had been complete working on these issue.

 

The new microcode was publish on 2023-07-28. To bring back Skylake X FPU performace. 😁 

 

 

 

W11 C 24H2 26236.5000 Core i9 7980XE 02007108 MCE ME 11.12.95.2499 R6E Modified BIOS 3801 SAMSUNG OG9 FW 1019.0 SSD 970 EVO PLUS 1 TB x 3 NVIDIA RTX 4090 GAME READY 555.99 64GB GSKILL DDR4 3200MHz JBL 9.1 Sound Bar DTS-X
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26 REPLIES 26

Granit Rapids is the first of a new generation of CPUs that will provide large improvements across the board of old x86, i64 and new AVX10.1 ISA standards. One thing which is interesting for the old x86, i64 instruction set is that Intel is doubling the amount of integer registers from 16 to 32 available for all. This only happens like every decade or so since you are messing with the core of the ISA. Allowing compilers to use more registers will offload memory transfers at the most basic level for every method and function call in every program that gets recompiled - since less need to be stored on the stack. Intel has published quite a bit about these changes (on their web site) and if they can pull off all of that and have Granit Rapids products in the HEDT space out this year, it will be a great year to upgrade.

But we will see. Xeon for the Data Center comes first, then Xeons for Workstations and very last comes the potential HEDT SKUs - or NOT, as we have seen with ice lake, sapphire rapids, emerald rapids which had no corresponding HEDT derivative - until now...

LGA 4677 was going to be EOL. I hope Intel playing LGA 4710 like LGA 2066 Era.

We will get Diamond Rapid featuring 128 Lion Cove Cores which first 64KB I-Cache 64KB D-Cache 3M L2 Cache 8M L3 Cache. It the first AVX1024 instructions support CPU from Intel.

 

W11 C 24H2 26236.5000 Core i9 7980XE 02007108 MCE ME 11.12.95.2499 R6E Modified BIOS 3801 SAMSUNG OG9 FW 1019.0 SSD 970 EVO PLUS 1 TB x 3 NVIDIA RTX 4090 GAME READY 555.99 64GB GSKILL DDR4 3200MHz JBL 9.1 Sound Bar DTS-X

Let us all hope that there will be a new line of rampage VII extreme with LGA4710 starting with Granit Rapids and then a few more generations, i.e. Dimond Rapids etc that are motherboard socket LGA4710 compatible. Just like the 79xx, 99xx, 109xx were MB and 2066 compatible. 128 P cores would be fantastic! don't care for the E core one bit. 

and I would be first in line if there is a Rampage VII Extreme / Granit Rapids CPU offering this year. if at a decent price of course 😁.

PanosXidis24
Level 11

okay so

10900X 4.8GHZ UNCORE 3.2GHZ CIBENECH R15 MCODE LATEST 3605 2587CB

10900X 4.8GHZ UNCORE 3.2GHZ CINEBENCH R15 MCODE OLDEST 0010 2739CB

so always newer microcode hit perfomance guys!!!

tistou77
Level 13

It seems that this microcode lengthens the boot time (Task Manager => Startup)
If anyone who put this ucode, can check

Thanks

Sorry for my english 😄


Case: Lian Li A77F
MB: Rampage VI Extreme Encore
CPU: i9 10980XE
RAM: G.Skill Trident Z RGB Royal 4x8Gb @4000 C16
GPU: EVGA RTX 2080ti XC Ultra
PSU: Seasonic Prime Ultra Titanium 1000W
OS: Intel Optane 905P PCIe
DATA: Samsung 980 Pro
SOUND: Asus Xonar Phoebus

tistou77
Level 13

For info, after several tests, it wouldn't come from ucode
I don't see what this could be (same options in bios)...

Sorry for my english 😄


Case: Lian Li A77F
MB: Rampage VI Extreme Encore
CPU: i9 10980XE
RAM: G.Skill Trident Z RGB Royal 4x8Gb @4000 C16
GPU: EVGA RTX 2080ti XC Ultra
PSU: Seasonic Prime Ultra Titanium 1000W
OS: Intel Optane 905P PCIe
DATA: Samsung 980 Pro
SOUND: Asus Xonar Phoebus