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Xeon Gold 6246 - Intel
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Revision as of 22:42, 7 May 2019 by David (talk | contribs)

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General Info
Microarchitecture

Xeon Gold 6246 is a 64-bit 12-core x86 high performance server microprocessor introduced by Intel in early 2019. The Gold 6246 is based on the Cascade Lake microarchitecture and is manufactured on a 14 nm process. This chip supports 4-way multiprocessing, sports 2 AVX-512 FMA units as well as three Ultra Path Interconnect links. This microprocessor supports up 1 TiB of hexa-channel DDR4-2933 memory, operates at 3.3 GHz with a TDP of 165 W and features a turbo boost frequency of up to 4.2 GHz.


Cache

Main article: Cascade Lake § Cache

The Xeon Gold 6246 features a considerably larger non-default 24.75 MiB of L3, a size that would normally be found on an 18-core part.

[Edit/Modify Cache Info]

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Cache Organization
Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory.

The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC.

Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies.

Note: All units are in kibibytes and mebibytes.
L1$768 KiB
786,432 B
0.75 MiB
L1I$384 KiB
393,216 B
0.375 MiB
12x32 KiB8-way set associative 
L1D$384 KiB
393,216 B
0.375 MiB
12x32 KiB8-way set associativewrite-back

L2$12 MiB
12,288 KiB
12,582,912 B
0.0117 GiB
  12x1 MiB16-way set associativewrite-back

L3$24.75 MiB
25,344 KiB
25,952,256 B
0.0242 GiB
  18x1.375 MiB11-way set associativewrite-back

Memory controller

[Edit/Modify Memory Info]

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Integrated Memory Controller
Max TypeDDR4-2933
Supports ECCYes
Max Mem1 TiB
Controllers2
Channels6
Max Bandwidth131.13 GiB/s
134,277.12 MiB/s
140.8 GB/s
140,799.765 MB/s
0.128 TiB/s
0.141 TB/s
Bandwidth
Single 21.86 GiB/s
Double 43.71 GiB/s
Quad 87.42 GiB/s
Hexa 131.13 GiB/s
full page nameintel/xeon gold/6246 +
has ecc memory supporttrue +
instance ofmicroprocessor +
l1$ size768 KiB (786,432 B, 0.75 MiB) +
l1d$ description8-way set associative +
l1d$ size384 KiB (393,216 B, 0.375 MiB) +
l1i$ description8-way set associative +
l1i$ size384 KiB (393,216 B, 0.375 MiB) +
l2$ description16-way set associative +
l2$ size12 MiB (12,288 KiB, 12,582,912 B, 0.0117 GiB) +
l3$ description11-way set associative +
l3$ size24.75 MiB (25,344 KiB, 25,952,256 B, 0.0242 GiB) +
ldate1900 +
max memory bandwidth131.13 GiB/s (134,277.12 MiB/s, 140.8 GB/s, 140,799.765 MB/s, 0.128 TiB/s, 0.141 TB/s) +
max memory channels6 +
supported memory typeDDR4-2933 +