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.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

EPYC 7643

2021

Why buy it

✅Better for gaming: +14.3% higher average FPS across 3 shared CPU benchmark tests.
✅Costs $1,155 less on MSRP ($4,995 MSRP vs $6,150 MSRP).
✅Delivers 29.5% more PassMark for each dollar spent, at 15.2 vs 11.8 PassMark/$ ($4,995 MSRP vs $6,150 MSRP).

Trade-offs

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

EPYC 7662

2020

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than EPYC 7643 across 3 shared CPU benchmark tests.
❌Lower PassMark (72,298 vs 76,050).
❌Lower PassMark per dollar, at 11.8 vs 15.2 PassMark/$ ($6,150 MSRP vs $4,995 MSRP).

EPYC 7643

2021

EPYC 7662

2020

Why buy it

✅Better for gaming: +14.3% higher average FPS across 3 shared CPU benchmark tests.
✅Costs $1,155 less on MSRP ($4,995 MSRP vs $6,150 MSRP).
✅Delivers 29.5% more PassMark for each dollar spent, at 15.2 vs 11.8 PassMark/$ ($4,995 MSRP vs $6,150 MSRP).

Why buy it

Trade-offs

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

Trade-offs

❌Worse for gaming: lower average FPS than EPYC 7643 across 3 shared CPU benchmark tests.
❌Lower PassMark (72,298 vs 76,050).
❌Lower PassMark per dollar, at 11.8 vs 15.2 PassMark/$ ($6,150 MSRP vs $4,995 MSRP).

Quick Answers

So, is EPYC 7643 better than EPYC 7662?

Yes. EPYC 7643 is the better overall CPU here. You are getting a 14.3% average FPS lead across 3 shared CPU game tests in our data, 5.2% better PassMark, and the stronger long-term platform, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, EPYC 7643 is the better pick here. According to our tests, it delivers 14.3% more average FPS across 3 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 better fit. You are getting 5.2% better PassMark, backed by 48 cores and 96 threads.

Which one is the smarter buy today, not just the cheaper CPU?

EPYC 7643 is the smarter buy today. EPYC 7643 is $1,155 cheaper on MSRP at $4,995 MSRP versus $6,150 MSRP, and it gives you a 14.3% average FPS lead across 3 shared CPU game tests in our data. It is also 29.5% better value on MSRP (15.2 vs 11.8 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play on paper.

Which one is more future-proof for 2026 and beyond?

EPYC 7643 is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2021 vs 2020) and more multi-core headroom with 48 cores / 96 threads instead of 64/128. That extra cache should hold up really well in CPU-limited games and high-refresh builds.

Games Benchmarks

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

EPYC 7643 Benchmark Check

EPYC 7662 Benchmark Check

Path of Exile 2

Preset	EPYC 7643	EPYC 7662
1080p
low	195 FPS	192 FPS
medium	159 FPS	156 FPS
high	129 FPS	125 FPS
ultra	100 FPS	97 FPS
1440p
low	160 FPS	156 FPS
medium	125 FPS	122 FPS
high	97 FPS	94 FPS
ultra	77 FPS	75 FPS
4K
low	72 FPS	73 FPS
medium	60 FPS	60 FPS
high	47 FPS	47 FPS
ultra	39 FPS	38 FPS

Open EPYC 7643 Open EPYC 7662

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	EPYC 7643	EPYC 7662
1080p
low	418 FPS	249 FPS
medium	367 FPS	220 FPS
high	299 FPS	182 FPS
ultra	234 FPS	145 FPS
1440p
low	344 FPS	204 FPS
medium	310 FPS	185 FPS
high	259 FPS	158 FPS
ultra	197 FPS	122 FPS
4K
low	211 FPS	127 FPS
medium	194 FPS	117 FPS
high	163 FPS	102 FPS
ultra	131 FPS	83 FPS

Open EPYC 7643 Open EPYC 7662

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	EPYC 7643	EPYC 7662
1080p
low	837 FPS	722 FPS
medium	698 FPS	590 FPS
high	650 FPS	513 FPS
ultra	574 FPS	446 FPS
1440p
low	602 FPS	587 FPS
medium	500 FPS	486 FPS
high	458 FPS	423 FPS
ultra	401 FPS	368 FPS
4K
low	430 FPS	426 FPS
medium	336 FPS	330 FPS
high	300 FPS	281 FPS
ultra	243 FPS	227 FPS

Open EPYC 7643 Open EPYC 7662

League of Legends

League of Legends

Valorant

Preset	EPYC 7643	EPYC 7662
1080p
low	977 FPS	935 FPS
medium	887 FPS	846 FPS
high	764 FPS	724 FPS
ultra	660 FPS	624 FPS
1440p
low	752 FPS	721 FPS
medium	656 FPS	628 FPS
high	561 FPS	535 FPS
ultra	482 FPS	460 FPS
4K
low	540 FPS	514 FPS
medium	481 FPS	458 FPS
high	422 FPS	400 FPS
ultra	364 FPS	348 FPS

Open EPYC 7643 Open EPYC 7662

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of EPYC 7643 and EPYC 7662

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.

EPYC 7662

The EPYC 7662 is manufactured by AMD. It was released in 2020-02-19. It is based on the Zen 2 (2017−2020) architecture. It features 64 cores and 128 threads. Base frequency is 2 GHz, with boost up to 3.3 GHz. L3 cache: 256 MB. L2 cache: 32 MB. Built on 7 nm, 14 nm process technology. Socket: SP3. Thermal design power (TDP): 225 Watt. Memory support: DDR4-3200. Passmark benchmark score: 72,298 points. Launch price was $6,700.

⚡

Processing Power

The EPYC 7643 packs 48 cores / 96 threads, while the EPYC 7662 offers 64 cores / 128 threads — the EPYC 7662 has 16 more cores. Boost clocks reach 3.6 GHz on the EPYC 7643 versus 3.3 GHz on the EPYC 7662 — a 8.7% clock advantage for the EPYC 7643 (base: 2.3 GHz vs 2 GHz). The EPYC 7643 uses the Milan (2021−2023) architecture (7 nm+), while the EPYC 7662 uses Zen 2 (2017−2020) (7 nm, 14 nm). In PassMark, the EPYC 7643 scores 76,050 against the EPYC 7662's 72,298 — a 5.1% lead for the EPYC 7643. L3 cache: 256 MB (total) on the EPYC 7643 vs 256 MB on the EPYC 7662.

Feature	EPYC 7643	EPYC 7662
Cores / Threads	48 / 96	64 / 128+33%
Boost Clock	3.6 GHz+9%	3.3 GHz
Base Clock	2.3 GHz+15%	2 GHz
L3 Cache	256 MB (total)	256 MB
L2 Cache	512 kB (per core)	32 MB+6300%
Process	7 nm+	7 nm, 14 nm
Architecture	Milan (2021−2023)	Zen 2 (2017−2020)
PassMark	76,050+5%	72,298
Geekbench 6 Single	1,671	—
Geekbench 6 Multi	15,000	—

🧠

Memory & Platform

Both processors use the SP3 socket with PCIe 4.0. Maximum memory speed reaches DDR4-3200 on the EPYC 7643 versus 3200 on the EPYC 7662 — the EPYC 7662 supports 199.5% faster memory, which can translate to measurable gains in memory-sensitive workloads. The EPYC 7662 supports up to 4096 of RAM compared to 4 TB — 199.6% more capacity for professional workloads. Both feature 8-channel memory with ECC support. Both provide 128 PCIe lanes. Chipset compatibility: SP3 (EPYC 7643) and SP3 (EPYC 7662).

Feature	EPYC 7643	EPYC 7662
Socket	SP3	SP3
PCIe Generation	PCIe 4.0	PCIe 4.0
Max RAM Speed	DDR4-3200	3200+79900%
Max RAM Capacity	4 TB+104857500%	4096
RAM Channels	8	8
ECC Support	Yes	Yes
PCIe Lanes	128	128

🔧

Advanced Features

Neither processor supports overclocking. Virtualization support: AMD-V (EPYC 7643) vs VT-x, VT-d (EPYC 7662). Primary use case: EPYC 7643 targets Server. Direct competitor: EPYC 7643 rivals EPYC 7443P; EPYC 7662 rivals Xeon Platinum 8280.

Feature	EPYC 7643	EPYC 7662
Integrated GPU	No	No
IGPU Model	None	None
Unlocked	No	No
AVX-512	No	No
Virtualization	AMD-V	VT-x, VT-d
Target Use	Server	—

💰

Value Analysis

The EPYC 7643 launched at $4995 MSRP, while the EPYC 7662 debuted at $6150. On MSRP ($4995 vs $6150), the EPYC 7643 is $1155 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 7643 delivers 15.2 pts/$ vs 11.8 pts/$ for the EPYC 7662 — making the EPYC 7643 the 25.7% better value option.