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EPYC 7643 vs EPYC 7663

CPUCPUGPUGPU
AMD

EPYC 7643

48 Cores96 Thrd225 WWMax: 3.6 GHz2021
EPYC family
·······
Buy on Amazon
VS
AMD

EPYC 7663

56 Cores112 Thrd240 WWMax: 3.5 GHz2021
EPYC family
·······
Buy on Amazon

EPYC 7643 vs EPYC 7663 Performance Spectrum

EPYC 7643
48 / 96
76,050
0.0%
brand logoRyzen 7 8840HX
brand logoRyzen 9 7900X3D
brand logoRyzen 9 7945HX3D
brand logoRyzen Threadripper PRO 9955WX
brand logoRyzen Threadripper 9960X
brand logoRyzen Threadripper 7970X
brand logoRyzen Threadripper PRO 7985WX
brand logoRyzen Threadripper 7980X
EPYC 7663
56 / 112
82,120
+8.0%
brand logoRyzen 9 5950X
brand logoRyzen Threadripper 3960X
brand logoRyzen Threadripper 3970X
brand logoRyzen 9 9950X3D
brand logoRyzen Threadripper 9960X
brand logoRyzen Threadripper PRO 9975WX
brand logoRyzen Threadripper PRO 7985WX
brand logoRyzen Threadripper 7980X

About PassMark

PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.

EPYC 7643 vs EPYC 7663 FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Path of Exile 2

Path of Exile 2

1080P
EPYC 7643
low195 FPS
medium159 FPS
high129 FPS
ultra100 FPS
1080P
EPYC 7663
low190 FPS
medium155 FPS
high123 FPS
ultra96 FPS
Counter-Strike 2

Counter-Strike 2

1080P
EPYC 7643
low418 FPS
medium367 FPS
high299 FPS
ultra234 FPS
1080P
EPYC 7663
low238 FPS
medium211 FPS
high174 FPS
ultra138 FPS
League of Legends

League of Legends

1080P
EPYC 7643
low837 FPS
medium698 FPS
high650 FPS
ultra574 FPS
1080P
EPYC 7663
low836 FPS
medium696 FPS
high649 FPS
ultra573 FPS
Valorant

Valorant

1080P
EPYC 7643
low977 FPS
medium887 FPS
high764 FPS
ultra660 FPS
1080P
EPYC 7663
low954 FPS
medium863 FPS
high739 FPS
ultra637 FPS
Among Us

Among Us

1080P
EPYC 7643
low60 FPS
medium60 FPS
high60 FPS
ultra60 FPS
1080P
EPYC 7663
low60 FPS
medium60 FPS
high60 FPS
ultra60 FPS
Apex Legends

Apex Legends

1080P
EPYC 7643
low300 FPS
medium300 FPS
high300 FPS
ultra300 FPS
1080P
EPYC 7663
low300 FPS
medium300 FPS
high300 FPS
ultra300 FPS
ARC Raiders

ARC Raiders

1080P
EPYC 7643
low300 FPS
medium229 FPS
high207 FPS
ultra186 FPS
1080P
EPYC 7663
low299 FPS
medium228 FPS
high206 FPS
ultra185 FPS
Baldur's Gate 3

Baldur's Gate 3

1080P
EPYC 7643
low249 FPS
medium221 FPS
high174 FPS
ultra138 FPS
1080P
EPYC 7663
low249 FPS
medium221 FPS
high174 FPS
ultra138 FPS
Call of Duty: Black Ops 6

Call of Duty: Black Ops 6

1080P
EPYC 7643
low308 FPS
medium278 FPS
high258 FPS
ultra212 FPS
1080P
EPYC 7663
low308 FPS
medium277 FPS
high257 FPS
ultra210 FPS
Call of Duty: Warzone

Call of Duty: Warzone

1080P
EPYC 7643
low234 FPS
medium206 FPS
high173 FPS
ultra161 FPS
1080P
EPYC 7663
low234 FPS
medium206 FPS
high173 FPS
ultra161 FPS
Check FPS with Custom Builds

EPYC 7643 vs EPYC 7663: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

EPYC 7643

2021

Why buy it

  • ✅Better for gaming: +3.3% higher average FPS across 50 shared CPU benchmark tests.
  • ✅Costs $1,371 less on MSRP ($4,995 MSRP vs $6,366 MSRP).
  • ✅Delivers 18.0% more PassMark for each dollar spent, at 15.2 vs 12.9 PassMark/$ ($4,995 MSRP vs $6,366 MSRP).

Trade-offs

  • ❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

EPYC 7663

2021

Why buy it

    Trade-offs

    • ❌Worse for gaming: lower average FPS than EPYC 7643 across 50 shared CPU benchmark tests.
    • ❌Lower Geekbench multi-core (12,380 vs 15,000).
    • ❌Lower PassMark per dollar, at 12.9 vs 15.2 PassMark/$ ($6,366 MSRP vs $4,995 MSRP).

    Quick Answers

    So, is EPYC 7643 better than EPYC 7663?
    Yes. EPYC 7643 is the better all-around CPU here. It gives you a 3.3% average FPS lead across 50 shared CPU game tests in our data and 21.2% better Geekbench multi-core, which is enough to make it the stronger overall pick.
    Which one is better for gaming?
    If gaming is the priority, EPYC 7643 is the better pick. According to our tests, it delivers 3.3% more average FPS across 50 shared CPU game tests.
    Which one is better for streaming, content creation, and heavy multitasking?
    For streaming, content creation, and heavier multitasking, EPYC 7643 is the stronger fit. You are getting 21.2% better Geekbench multi-core, backed by 48 cores and 96 threads.
    Which one is the smarter buy today, not just the cheaper CPU?
    EPYC 7643 is the better buy right now. EPYC 7643 comes in $1,371 cheaper on MSRP at $4,995 MSRP versus $6,366 MSRP, and it still gives you a 3.3% average FPS lead across 50 shared CPU game tests in our data. It is also 18.0% better value on MSRP (15.2 vs 12.9 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.
    Which one is more future-proof for 2026 and beyond?
    EPYC 7663 is the safer long-term CPU choice because it gives you more room to grow and a better platform outlook.

    EPYC 7643 vs EPYC 7663 Technical Specifications

    Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

    AMD

    EPYC 7643

    The EPYC 7643 is manufactured by AMD. It was released in 15 March 2021 (4 years ago). It is based on the Milan (2021−2023) architecture. It features 48 cores and 96 threads. Base frequency is 2.3 GHz, with boost up to 3.6 GHz. L3 cache: 256 MB (total). L2 cache: 512 kB (per core). Built on 7 nm+ process technology. Socket: SP3. Thermal design power (TDP): 225 Watt. Memory support: DDR4-3200. Passmark benchmark score: 76,050 points. Launch price was $4,995.

    AMD

    EPYC 7663

    The EPYC 7663 is manufactured by AMD. It was released in 15 March 2021 (4 years ago). It is based on the Milan (2021−2023) architecture. It features 56 cores and 112 threads. Base frequency is 2 GHz, with boost up to 3.5 GHz. L3 cache: 256 MB (total). L2 cache: 512 kB (per core). Built on 7 nm+ process technology. Socket: SP3. Thermal design power (TDP): 240 Watt. Memory support: DDR4-3200. Passmark benchmark score: 82,120 points. Launch price was $6,366.

    ⚡

    Processing Power

    The EPYC 7643 packs 48 cores / 96 threads, while the EPYC 7663 offers 56 cores / 112 threads — the EPYC 7663 has 8 more cores. Boost clocks reach 3.6 GHz on the EPYC 7643 versus 3.5 GHz on the EPYC 7663 — a 2.8% clock advantage for the EPYC 7643 (base: 2.3 GHz vs 2 GHz). Both are built on the Milan (2021−2023) architecture using a 7 nm+ process. In PassMark, the EPYC 7643 scores 76,050 against the EPYC 7663's 82,120 — a 7.7% lead for the EPYC 7663. Geekbench 6 single-core — the metric most relevant to gaming — records 1,671 vs 1,370, a 19.8% lead for the EPYC 7643 that directly translates to higher frame rates. Multi-core Geekbench: 15,000 vs 12,380 (19.1% advantage for the EPYC 7643). Both processors carry 256 MB (total) of L3 cache.

    FeatureEPYC 7643EPYC 7663
    Cores / Threads
    48 / 96
    56 / 112+17%
    Boost Clock
    3.6 GHz+3%
    3.5 GHz
    Base Clock
    2.3 GHz+15%
    2 GHz
    L3 Cache
    256 MB (total)
    256 MB (total)
    L2 Cache
    512 kB (per core)
    512 kB (per core)
    Process
    7 nm+
    7 nm+
    Architecture
    Milan (2021−2023)
    Milan (2021−2023)
    PassMark
    76,050
    82,120+8%
    Geekbench 6 Single
    1,671+22%
    1,370
    Geekbench 6 Multi
    15,000+21%
    12,380
    🧠

    Memory & Platform

    Both processors use the SP3 socket with PCIe 4.0. Both support up to DDR4-3200 memory speed. Both support up to 4 TB of RAM. Both feature 8-channel memory with ECC support. Both provide 128 PCIe lanes. Chipset compatibility: SP3 (EPYC 7643) and SP3 (EPYC 7663).

    FeatureEPYC 7643EPYC 7663
    Socket
    SP3
    SP3
    PCIe Generation
    PCIe 4.0
    PCIe 4.0
    Max RAM Speed
    DDR4-3200
    DDR4-3200
    Max RAM Capacity
    4 TB
    4096 GB
    RAM Channels
    8
    8
    ECC Support
    Yes
    Yes
    PCIe Lanes
    128
    128
    🔧

    Advanced Features

    Neither processor supports overclocking. Both support AMD-V virtualization. Primary use case: EPYC 7643 targets Server, EPYC 7663 targets Server. Direct competitor: EPYC 7643 rivals EPYC 7443P; EPYC 7663 rivals Xeon Platinum 8380.

    FeatureEPYC 7643EPYC 7663
    Integrated GPU
    No
    No
    IGPU Model
    None
    None
    Unlocked
    No
    No
    AVX-512
    No
    No
    Virtualization
    AMD-V
    AMD-V
    Target Use
    Server
    Server
    💰

    Value Analysis

    At launch, the EPYC 7643 was priced at $4995, while the EPYC 7663 came in at $6366. On launch pricing ($4995 vs $6366), EPYC 7643 was $1371 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 7643 delivers 15.2 pts/$ vs 12.9 pts/$ for the EPYC 7663 — making the EPYC 7643 the 16.5% better value option.

    FeatureEPYC 7643EPYC 7663
    MSRP
    $4995-22%
    $6366
    Performance per Dollar
    15.2+18%
    12.9
    Release Date
    2021
    2021
    Search EPYC 7643 on AmazonSearch EPYC 7663 on Amazon

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