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Difference between revisions of "amd/epyc/7742"
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|l3 cache=256 MiB
 
|l3 cache=256 MiB
 
|l3 break=16x16 MiB
 
|l3 break=16x16 MiB
 +
}}
 +
 +
== Memory controller ==
 +
{{memory controller
 +
|type=DDR4-3200
 +
|ecc=Yes
 +
|max mem=4 TiB
 +
|controllers=8
 +
|channels=8
 +
|max bandwidth=190.7 GiB/s
 +
|bandwidth schan=23.84 GiB/s
 +
|bandwidth dchan=47.68 GiB/s
 +
|bandwidth qchan=95.37 GiB/s
 +
|bandwidth hchan=143.1 GiB/s
 +
|bandwidth ochan=190.7 GiB/s
 
}}
 
}}

Revision as of 15:55, 6 August 2019

Edit Values
EPYC 7742
General Info
DesignerAMD
ManufacturerTSMC, GlobalFoundries
Model Number7742
Part Number100-000000053
MarketServer
IntroductionAugust 7, 2019 (announced)
August 7, 2019 (launched)
ShopAmazon
General Specs
FamilyEPYC
Series7002
LockedYes
Frequency2,200 MHz
Turbo Frequency3,400 MHz
Clock multiplier22
Microarchitecture
ISAx86-64 (x86)
MicroarchitectureZen 2
Core NameRome
Core Family23
Process7 nm, 14 nm
TechnologyCMOS
MCPYes (9 dies)
Word Size64 bit
Cores64
Threads128
Max Memory4 TiB
Multiprocessing
Max SMP2-Way (Multiprocessor)
Electrical
TDP225 W
Packaging
PackageSP3, FCLGA-4094 (FC-OLGA)
Dimension75.4 mm × 58.5 mm × 6.26 mm
Pitch0.87 mm × 1 mm
Contacts4094
SocketSP3, LGA-4094

EPYC 7742 is a 64-bit 64-core x86 server microprocessor designed and introduced by AMD in mid-2019. This multi-chip processor, which is based on the Zen 2 microarchitecture, incorporates logic fabricated TSMC 7 nm process and I/O fabricated on GlobalFoundries 14 nm process. The 7742 has a TDP of 225 W with a base frequency of 2.2 GHz and a boost frequency of up to 3.4 GHz. This processor supports up to two-way SMP and up to 4 TiB of eight channels DDR4-3200 memory per socket.

Cache

Main article: Zen 2 § Cache

[Edit/Modify Cache Info]

hierarchy icon.svg
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$4 MiB
4,096 KiB
4,194,304 B
L1I$2 MiB
2,048 KiB
2,097,152 B
64x32 KiB8-way set associative 
L1D$2 MiB
2,048 KiB
2,097,152 B
64x32 KiB8-way set associative 
L2$32 MiB
32,768 KiB
33,554,432 B
0.0313 GiB
  64x512 KiB8-way set associativewrite-back
L3$256 MiB
262,144 KiB
268,435,456 B
0.25 GiB
  16x16 MiB  

Memory controller

[Edit/Modify Memory Info]

ram icons.svg
Integrated Memory Controller
Max TypeDDR4-3200
Supports ECCYes
Max Mem4 TiB
Controllers8
Channels8
Max Bandwidth190.7 GiB/s
195,276.8 MiB/s
204.763 GB/s
204,762.566 MB/s
0.186 TiB/s
0.205 TB/s
Bandwidth
Single 23.84 GiB/s
Double 47.68 GiB/s
Quad 95.37 GiB/s
Hexa 143.1 GiB/s
Octa 190.7 GiB/s
Retrieved from "https://en.wikichip.org/w/index.php?title=amd/epyc/7742&oldid=93076"
Facts about "EPYC 7742 - AMD"
RDF feed
base frequency2,200 MHz (2.2 GHz, 2,200,000 kHz) +
clock multiplier22 +
core count64 +
core family23 +
core nameRome +
designerAMD +
die count9 +
familyEPYC +
first announcedAugust 7, 2019 +
first launchedAugust 7, 2019 +
full page nameamd/epyc/7742 +
has ecc memory supporttrue +
has locked clock multipliertrue +
instance ofmicroprocessor +
is multi-chip packagetrue +
isax86-64 +
isa familyx86 +
l1$ size4,096 KiB (4,194,304 B, 4 MiB) +
l1d$ description8-way set associative +
l1d$ size2,048 KiB (2,097,152 B, 2 MiB) +
l1i$ description8-way set associative +
l1i$ size2,048 KiB (2,097,152 B, 2 MiB) +
l2$ description8-way set associative +
l2$ size32 MiB (32,768 KiB, 33,554,432 B, 0.0313 GiB) +
l3$ size256 MiB (262,144 KiB, 268,435,456 B, 0.25 GiB) +
ldateAugust 7, 2019 +
manufacturerTSMC + and GlobalFoundries +
market segmentServer +
max cpu count2 +
max memory4,194,304 MiB (4,294,967,296 KiB, 4,398,046,511,104 B, 4,096 GiB, 4 TiB) +
max memory bandwidth190.7 GiB/s (195,276.8 MiB/s, 204.763 GB/s, 204,762.566 MB/s, 0.186 TiB/s, 0.205 TB/s) +
max memory channels8 +
microarchitectureZen 2 +
model number7742 +
nameEPYC 7742 +
packageSP3 + and FCLGA-4094 +
part number100-000000053 +
process7 nm (0.007 μm, 7.0e-6 mm) + and 14 nm (0.014 μm, 1.4e-5 mm) +
series7002 +
smp max ways2 +
socketSP3 + and LGA-4094 +
supported memory typeDDR4-3200 +
tdp225 W (225,000 mW, 0.302 hp, 0.225 kW) +
technologyCMOS +
thread count128 +
turbo frequency3,400 MHz (3.4 GHz, 3,400,000 kHz) +
word size64 bit (8 octets, 16 nibbles) +