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EPYC 7742 - AMD
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EPYC 7742
General Info
DesignerAMD
ManufacturerTSMC, GlobalFoundries
Model Number7742
Part Number100-000000053
MarketServer
IntroductionAugust 7, 2019 (announced)
August 7, 2019 (launched)
Release Price$6950.00 (tray)
General Specs
FamilyEPYC
Series7002
LockedYes
Frequency2,250 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 CPUs2 (Multiprocessor)
Max Memory4 TiB
Electrical
TDP225 W
Packaging
PackageFCLGA-4094 (LGA)
Dimension58.5 mm × 75.4 mm
Pitch1.00 mm
Contacts4094
SocketSocket SP3, 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 2.25 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[edit]

Main article: Zen 2 § Cache

[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$4 MiB
4,096 KiB
4,194,304 B
0.00391 GiB
L1I$2 MiB
2,048 KiB
2,097,152 B
0.00195 GiB
64x32 KiB8-way set associative 
L1D$2 MiB
2,048 KiB
2,097,152 B
0.00195 GiB
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]

[Edit/Modify Memory Info]

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Integrated Memory Controller
Max TypeDDR4-3200
Supports ECCYes
Max Mem4 TiB
Controllers8
Channels8
Max Bandwidth190.7 GiB/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

Expansions[edit]

[Edit/Modify Expansions Info]

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Expansion Options
PCIeRevision: 4.0
Max Lanes: 128
Configuration: x16, x8


Features[edit]

[Edit/Modify Supported Features]

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Supported x86 Extensions & Processor Features
MMXMMX Extension
EMMXExtended MMX Extension
SSEStreaming SIMD Extensions
SSE2Streaming SIMD Extensions 2
SSE3Streaming SIMD Extensions 3
SSSE3Supplemental SSE3
SSE4.1Streaming SIMD Extensions 4.1
SSE4.2Streaming SIMD Extensions 4.2
SSE4aStreaming SIMD Extensions 4a
AVXAdvanced Vector Extensions
AVX2Advanced Vector Extensions 2
ABMAdvanced Bit Manipulation
BMI1Bit Manipulation Instruction Set 1
BMI2Bit Manipulation Instruction Set 2
FMA33-Operand Fused-Multiply-Add
AESAES Encryption Instructions
RdRandHardware RNG
SHASHA Extensions
ADXMulti-Precision Add-Carry
CLMULCarry-less Multiplication Extension
F16C16-bit Floating Point Conversion
x86-1616-bit x86
x86-3232-bit x86
x86-6464-bit x86
RealReal Mode
ProtectedProtected Mode
SMMSystem Management Mode
FPUIntegrated x87 FPU
NXNo-eXecute
SMTSimultaneous Multithreading
AMD-ViAMD-Vi (I/O MMU virtualization)
AMD-VAMD Virtualization
SMESecure Memory Encryption
TSMETransparent SME
SEVSecure Encrypted Virtualization
SenseMISenseMI Technology
Boost 2Precision Boost 2
Facts about "EPYC 7742 - AMD"
Has subobject
"Has subobject" is a predefined property representing a container construct and is provided by Semantic MediaWiki.
EPYC 7742 - AMD#pcie +
base frequency2,250 MHz (2.25 GHz, 2,250,000 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 advanced vector extensionstrue +
has advanced vector extensions 2true +
has amd amd-v technologytrue +
has amd amd-vi technologytrue +
has amd precision boost 2true +
has amd secure encrypted virtualization technologytrue +
has amd secure memory encryption technologytrue +
has amd sensemi technologytrue +
has amd transparent secure memory encryption technologytrue +
has ecc memory supporttrue +
has featureAdvanced Vector Extensions +, Advanced Vector Extensions 2 +, Advanced Encryption Standard Instruction Set Extension +, SenseMI Technology + and Precision Boost 2 +
has locked clock multipliertrue +
has simultaneous multithreadingtrue +
has x86 advanced encryption standard instruction set extensiontrue +
instance ofmicroprocessor +
is multi-chip packagetrue +
isax86-64 +
isa familyx86 +
l1$ size4 MiB (4,096 KiB, 4,194,304 B, 0.00391 GiB) +
l1d$ description8-way set associative +
l1d$ size2 MiB (2,048 KiB, 2,097,152 B, 0.00195 GiB) +
l1i$ description8-way set associative +
l1i$ size2 MiB (2,048 KiB, 2,097,152 B, 0.00195 GiB) +
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 channels8 +
microarchitectureZen 2 +
model number7742 +
nameEPYC 7742 +
packageFCLGA-4094 +
part number100-000000053 +
process7 nm (0.007 μm, 7.0e-6 mm) + and 14 nm (0.014 μm, 1.4e-5 mm) +
release price$ 6,950.00 (€ 6,255.00, £ 5,629.50, ¥ 718,143.50) +
release price (tray)$ 6,950.00 (€ 6,255.00, £ 5,629.50, ¥ 718,143.50) +
series7002 +
socketSocket SP3 + 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) +