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: +11.3% higher average FPS across 3 shared CPU benchmark tests.
✅Draws 225W instead of 280W, a 55W reduction.

Trade-offs

❌Lower PassMark per dollar, at 15.2 vs 21.6 PassMark/$ ($4,995 MSRP vs $3,420 MSRP).
❌Older platform position on SP3 with DDR4, while EPYC 9354 moves to SP5 and DDR5.
❌No AVX-512 support for niche heavy compute workloads where it can matter.

EPYC 9354

2022

Why buy it

✅Costs $1,575 less on MSRP ($3,420 MSRP vs $4,995 MSRP).
✅Delivers 41.9% more PassMark for each dollar spent, at 21.6 vs 15.2 PassMark/$ ($3,420 MSRP vs $4,995 MSRP).
✅Newer platform on SP5 with DDR5 support instead of SP3 and DDR4.

Trade-offs

❌Worse for gaming: lower average FPS than EPYC 7643 across 3 shared CPU benchmark tests.
❌Lower PassMark (73,892 vs 76,050).
❌24.4% higher power demand at 280W vs 225W.

EPYC 7643

2021

EPYC 9354

2022

Why buy it

✅Better for gaming: +11.3% higher average FPS across 3 shared CPU benchmark tests.
✅Draws 225W instead of 280W, a 55W reduction.

Why buy it

✅Costs $1,575 less on MSRP ($3,420 MSRP vs $4,995 MSRP).
✅Delivers 41.9% more PassMark for each dollar spent, at 21.6 vs 15.2 PassMark/$ ($3,420 MSRP vs $4,995 MSRP).
✅Newer platform on SP5 with DDR5 support instead of SP3 and DDR4.

Trade-offs

❌Lower PassMark per dollar, at 15.2 vs 21.6 PassMark/$ ($4,995 MSRP vs $3,420 MSRP).
❌Older platform position on SP3 with DDR4, while EPYC 9354 moves to SP5 and DDR5.
❌No AVX-512 support for niche heavy compute workloads where it can matter.

Trade-offs

❌Worse for gaming: lower average FPS than EPYC 7643 across 3 shared CPU benchmark tests.
❌Lower PassMark (73,892 vs 76,050).
❌24.4% higher power demand at 280W vs 225W.

Quick Answers

So, is EPYC 7643 better than EPYC 9354?

Yes. EPYC 7643 is the better overall CPU here. You are getting a 11.3% average FPS lead across 3 shared CPU game tests in our data and 2.9% better PassMark, 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 11.3% 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 2.9% better PassMark, backed by 48 cores and 96 threads.

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

EPYC 7643 is still the faster CPU overall, but EPYC 9354 makes more sense if price matters more than absolute performance. EPYC 7643 is 46.1% more expensive on MSRP at $4,995 MSRP versus $3,420 MSRP, and it gives you a 11.3% average FPS lead across 3 shared CPU game tests in our data. EPYC 9354 is also 41.9% better value on MSRP (21.6 vs 15.2 PassMark/$), which is why it is easier to justify for price-conscious builds on paper.

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

EPYC 9354 is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2021), a healthier platform with SP5 and DDR5 instead of SP3, and AVX-512 support for heavier modern compute workloads. That should give you a better long-term upgrade path for motherboard, RAM, and future CPU swaps.

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 9354 Benchmark Check

Path of Exile 2

Preset	EPYC 7643	EPYC 9354
1080p
low	195 FPS	176 FPS
medium	159 FPS	145 FPS
high	129 FPS	125 FPS
ultra	100 FPS	96 FPS
1440p
low	160 FPS	153 FPS
medium	125 FPS	123 FPS
high	97 FPS	99 FPS
ultra	77 FPS	77 FPS
4K
low	72 FPS	71 FPS
medium	60 FPS	60 FPS
high	47 FPS	47 FPS
ultra	39 FPS	39 FPS

Open EPYC 7643 Open EPYC 9354

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	EPYC 7643	EPYC 9354
1080p
low	418 FPS	534 FPS
medium	367 FPS	466 FPS
high	299 FPS	374 FPS
ultra	234 FPS	304 FPS
1440p
low	344 FPS	439 FPS
medium	310 FPS	392 FPS
high	259 FPS	324 FPS
ultra	197 FPS	255 FPS
4K
low	211 FPS	270 FPS
medium	194 FPS	246 FPS
high	163 FPS	216 FPS
ultra	131 FPS	179 FPS

Open EPYC 7643 Open EPYC 9354

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	EPYC 7643	EPYC 9354
1080p
low	837 FPS	673 FPS
medium	698 FPS	562 FPS
high	650 FPS	523 FPS
ultra	574 FPS	455 FPS
1440p
low	602 FPS	511 FPS
medium	500 FPS	426 FPS
high	458 FPS	390 FPS
ultra	401 FPS	337 FPS
4K
low	430 FPS	377 FPS
medium	336 FPS	295 FPS
high	300 FPS	263 FPS
ultra	243 FPS	211 FPS

Open EPYC 7643 Open EPYC 9354

League of Legends

League of Legends

Valorant

Preset	EPYC 7643	EPYC 9354
1080p
low	977 FPS	937 FPS
medium	887 FPS	856 FPS
high	764 FPS	735 FPS
ultra	660 FPS	648 FPS
1440p
low	752 FPS	751 FPS
medium	656 FPS	658 FPS
high	561 FPS	561 FPS
ultra	482 FPS	480 FPS
4K
low	540 FPS	539 FPS
medium	481 FPS	484 FPS
high	422 FPS	423 FPS
ultra	364 FPS	366 FPS

Open EPYC 7643 Open EPYC 9354

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of EPYC 7643 and EPYC 9354

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 9354

The EPYC 9354 is manufactured by AMD. It was released in 10 November 2022 (3 years ago). It is based on the Genoa (2022−2023) architecture. It features 32 cores and 64 threads. Base frequency is 3.25 GHz, with boost up to 3.8 GHz. L3 cache: 256 MB (total). L2 cache: 1 MB (per core). Built on 5 nm, 6 nm process technology. Socket: SP5. Thermal design power (TDP): 280 Watt. Memory support: DDR5-4800. Passmark benchmark score: 73,892 points. Launch price was $3,420.

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Processing Power

The EPYC 7643 packs 48 cores / 96 threads, while the EPYC 9354 offers 32 cores / 64 threads — the EPYC 7643 has 16 more cores. Boost clocks reach 3.6 GHz on the EPYC 7643 versus 3.8 GHz on the EPYC 9354 — a 5.4% clock advantage for the EPYC 9354 (base: 2.3 GHz vs 3.25 GHz). The EPYC 7643 uses the Milan (2021−2023) architecture (7 nm+), while the EPYC 9354 uses Genoa (2022−2023) (5 nm, 6 nm). In PassMark, the EPYC 7643 scores 76,050 against the EPYC 9354's 73,892 — a 2.9% lead for the EPYC 7643. Both processors carry 256 MB (total) of L3 cache.

Feature	EPYC 7643	EPYC 9354
Cores / Threads	48 / 96+50%	32 / 64
Boost Clock	3.6 GHz	3.8 GHz+6%
Base Clock	2.3 GHz	3.25 GHz+41%
L3 Cache	256 MB (total)	256 MB (total)
L2 Cache	512 kB (per core)	1 MB (per core)+100%
Process	7 nm+	5 nm, 6 nm-29%
Architecture	Milan (2021−2023)	Genoa (2022−2023)
PassMark	76,050+3%	73,892
Geekbench 6 Single	1,671	—
Geekbench 6 Multi	15,000	—

🧠

Memory & Platform

The EPYC 7643 uses the SP3 socket (PCIe 4.0), while the EPYC 9354 uses SP5 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the EPYC 7643 versus 4800 on the EPYC 9354 — the EPYC 9354 supports 199.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. The EPYC 9354 supports up to 6144 of RAM compared to 4 TB — 199.7% more capacity for professional workloads. Memory channels: 8 (EPYC 7643) vs 12 (EPYC 9354). Both provide 128 PCIe lanes. Chipset compatibility: SP3 (EPYC 7643) and SP5 (EPYC 9354).

Feature	EPYC 7643	EPYC 9354
Socket	SP3	SP5
PCIe Generation	PCIe 4.0	PCIe 5.0+25%
Max RAM Speed	DDR4-3200	4800+119900%
Max RAM Capacity	4 TB+69904967%	6144
RAM Channels	8	12+50%
ECC Support	Yes	Yes
PCIe Lanes	128	128

🔧

Advanced Features

Neither processor supports overclocking. Only the EPYC 9354 supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: AMD-V (EPYC 7643) vs VT-x, VT-d, SEV-SNP (EPYC 9354). Primary use case: EPYC 7643 targets Server. Direct competitor: EPYC 7643 rivals EPYC 7443P; EPYC 9354 rivals Xeon Platinum 8468.

Feature	EPYC 7643	EPYC 9354
Integrated GPU	No	No
IGPU Model	None	None
Unlocked	No	No
AVX-512	No	Yes
Virtualization	AMD-V	VT-x, VT-d, SEV-SNP
Target Use	Server	—

💰

Value Analysis

The EPYC 7643 launched at $4995 MSRP, while the EPYC 9354 debuted at $3420. On MSRP ($4995 vs $3420), the EPYC 9354 is $1575 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 7643 delivers 15.2 pts/$ vs 21.6 pts/$ for the EPYC 9354 — making the EPYC 9354 the 34.6% better value option.