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 7643P

2023

Why buy it

✅Costs $1,268 less on MSRP ($2,722 MSRP vs $3,990 MSRP).
✅Delivers 41.8% more PassMark for each dollar spent, at 28.4 vs 20.0 PassMark/$ ($2,722 MSRP vs $3,990 MSRP).
✅Draws 225W instead of 280W, a 55W reduction.
✅45.5% more PCIe lanes (128 vs 88) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen Threadripper 3990X across 46 shared CPU benchmark tests.
❌Lower PassMark (77,307 vs 79,889).

Ryzen Threadripper 3990X

2019

Why buy it

✅Better for gaming: +16.5% higher average FPS across 46 shared CPU benchmark tests.

Trade-offs

❌Lower PassMark per dollar, at 20.0 vs 28.4 PassMark/$ ($3,990 MSRP vs $2,722 MSRP).
❌24.4% higher power demand at 280W vs 225W.

EPYC 7643P

2023

Ryzen Threadripper 3990X

2019

Why buy it

✅Costs $1,268 less on MSRP ($2,722 MSRP vs $3,990 MSRP).
✅Delivers 41.8% more PassMark for each dollar spent, at 28.4 vs 20.0 PassMark/$ ($2,722 MSRP vs $3,990 MSRP).
✅Draws 225W instead of 280W, a 55W reduction.
✅45.5% more PCIe lanes (128 vs 88) for storage and expansion-heavy builds.

Why buy it

✅Better for gaming: +16.5% higher average FPS across 46 shared CPU benchmark tests.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen Threadripper 3990X across 46 shared CPU benchmark tests.
❌Lower PassMark (77,307 vs 79,889).

Trade-offs

❌Lower PassMark per dollar, at 20.0 vs 28.4 PassMark/$ ($3,990 MSRP vs $2,722 MSRP).
❌24.4% higher power demand at 280W vs 225W.

Quick Answers

So, is Ryzen Threadripper 3990X better than EPYC 7643P?

Yes. Ryzen Threadripper 3990X is the better overall CPU here. You are getting a 16.5% average FPS lead across 46 shared CPU game tests in our data and 3.3% better PassMark, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, Ryzen Threadripper 3990X is the better pick here. According to our tests, it delivers 16.5% more average FPS across 46 shared CPU game tests.

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Ryzen Threadripper 3990X is the better fit. You are getting 3.3% better PassMark, backed by 64 cores and 128 threads.

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

Ryzen Threadripper 3990X is still the faster CPU overall, but EPYC 7643P makes more sense if price matters more than absolute performance. Ryzen Threadripper 3990X is 46.6% more expensive on MSRP at $3,990 MSRP versus $2,722 MSRP, and it gives you a 16.5% average FPS lead across 46 shared CPU game tests in our data. EPYC 7643P is also 41.8% better value on MSRP (28.4 vs 20.0 PassMark/$), 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 7643P is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2019). 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 7643P Benchmark Check

Ryzen Threadripper 3990X Benchmark Check

Path of Exile 2

Preset	EPYC 7643P	Ryzen Threadripper 3990X
1080p
low	195 FPS	181 FPS
medium	159 FPS	152 FPS
high	129 FPS	131 FPS
ultra	100 FPS	106 FPS
1440p
low	160 FPS	157 FPS
medium	125 FPS	125 FPS
high	97 FPS	102 FPS
ultra	77 FPS	83 FPS
4K
low	72 FPS	85 FPS
medium	60 FPS	72 FPS
high	47 FPS	57 FPS
ultra	39 FPS	46 FPS

Open EPYC 7643P Open Ryzen Threadripper 3990X

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	EPYC 7643P	Ryzen Threadripper 3990X
1080p
low	418 FPS	584 FPS
medium	367 FPS	503 FPS
high	299 FPS	386 FPS
ultra	234 FPS	330 FPS
1440p
low	344 FPS	491 FPS
medium	310 FPS	433 FPS
high	259 FPS	343 FPS
ultra	197 FPS	277 FPS
4K
low	211 FPS	308 FPS
medium	194 FPS	275 FPS
high	163 FPS	235 FPS
ultra	131 FPS	204 FPS

Open EPYC 7643P Open Ryzen Threadripper 3990X

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	EPYC 7643P	Ryzen Threadripper 3990X
1080p
low	837 FPS	681 FPS
medium	698 FPS	563 FPS
high	650 FPS	497 FPS
ultra	574 FPS	428 FPS
1440p
low	602 FPS	582 FPS
medium	500 FPS	488 FPS
high	458 FPS	427 FPS
ultra	401 FPS	368 FPS
4K
low	430 FPS	424 FPS
medium	336 FPS	338 FPS
high	300 FPS	293 FPS
ultra	243 FPS	234 FPS

Open EPYC 7643P Open Ryzen Threadripper 3990X

League of Legends

League of Legends

Valorant

Preset	EPYC 7643P	Ryzen Threadripper 3990X
1080p
low	979 FPS	942 FPS
medium	888 FPS	842 FPS
high	765 FPS	724 FPS
ultra	661 FPS	639 FPS
1440p
low	753 FPS	777 FPS
medium	657 FPS	677 FPS
high	562 FPS	580 FPS
ultra	482 FPS	502 FPS
4K
low	541 FPS	540 FPS
medium	481 FPS	489 FPS
high	423 FPS	429 FPS
ultra	365 FPS	373 FPS

Open EPYC 7643P Open Ryzen Threadripper 3990X

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of EPYC 7643P and Ryzen Threadripper 3990X

EPYC 7643P

The EPYC 7643P is manufactured by AMD. It was released in 5 September 2023 (2 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. Passmark benchmark score: 77,307 points. Launch price was $2,722.

Ryzen Threadripper 3990X

The Ryzen Threadripper 3990X is manufactured by AMD. It was released in 7 February 2020 (5 years ago). It is based on the Matisse (2019−2020) architecture. It features 64 cores and 128 threads. Base frequency is 2.9 GHz, with boost up to 4.3 GHz. L3 cache: 256 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: TR4. Thermal design power (TDP): 280 Watt. Memory support: DDR4-3200. Passmark benchmark score: 79,889 points. Launch price was $3,999.

⚡

Processing Power

The EPYC 7643P packs 48 cores / 96 threads, while the Ryzen Threadripper 3990X offers 64 cores / 128 threads — the Ryzen Threadripper 3990X has 16 more cores. Boost clocks reach 3.6 GHz on the EPYC 7643P versus 4.3 GHz on the Ryzen Threadripper 3990X — a 17.7% clock advantage for the Ryzen Threadripper 3990X (base: 2.3 GHz vs 2.9 GHz). The EPYC 7643P uses the Milan (2021−2023) architecture (7 nm), while the Ryzen Threadripper 3990X uses Matisse (2019−2020) (7 nm, 12 nm). In PassMark, the EPYC 7643P scores 77,307 against the Ryzen Threadripper 3990X's 79,889 — a 3.3% lead for the Ryzen Threadripper 3990X. L3 cache: 256 MB (total) on the EPYC 7643P vs 256 MB on the Ryzen Threadripper 3990X.

Feature	EPYC 7643P	Ryzen Threadripper 3990X
Cores / Threads	48 / 96	64 / 128+33%
Boost Clock	3.6 GHz	4.3 GHz+19%
Base Clock	2.3 GHz	2.9 GHz+26%
L3 Cache	256 MB (total)	256 MB
L2 Cache	512 kB (per core)	512K (per core)
Process	7 nm	7 nm, 12 nm
Architecture	Milan (2021−2023)	Matisse (2019−2020)
PassMark	77,307	79,889+3%
Cinebench R23 Multi	—	64,366
Geekbench 6 Single	—	1,961
Geekbench 6 Multi	—	22,045

🧠

Memory & Platform

The EPYC 7643P uses the SP3 socket (PCIe 4.0), while the Ryzen Threadripper 3990X uses TR4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 3200 on the EPYC 7643P versus DDR4-3200 on the Ryzen Threadripper 3990X — the EPYC 7643P supports 199.5% faster memory, which can translate to measurable gains in memory-sensitive workloads. The EPYC 7643P supports up to 4096 of RAM compared to 256 GB — 176.5% more capacity for professional workloads. Memory channels: 8 (EPYC 7643P) vs 4 (Ryzen Threadripper 3990X). PCIe lanes: 128 (EPYC 7643P) vs 88 (Ryzen Threadripper 3990X) — the EPYC 7643P offers 40 more lanes for additional GPUs or NVMe drives. Chipset compatibility: SP3 (EPYC 7643P) and TRX40 (Ryzen Threadripper 3990X).

Feature	EPYC 7643P	Ryzen Threadripper 3990X
Socket	SP3	TR4
PCIe Generation	PCIe 4.0	PCIe 4.0
Max RAM Speed	3200+79900%	DDR4-3200
Max RAM Capacity	4096	256 GB+6553500%
RAM Channels	8+100%	4
ECC Support	Yes	Yes
PCIe Lanes	128+45%	88

🔧

Advanced Features

Only the Ryzen Threadripper 3990X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: VT-x, VT-d, SEV (EPYC 7643P) vs true (Ryzen Threadripper 3990X). Direct competitor: EPYC 7643P rivals Xeon Platinum 8380; Ryzen Threadripper 3990X rivals Core i9-10980XE.

Feature	EPYC 7643P	Ryzen Threadripper 3990X
Integrated GPU	No	No
IGPU Model	None	None
Unlocked	No	Yes
AVX-512	No	No
Virtualization	VT-x, VT-d, SEV	true

💰

Value Analysis

The EPYC 7643P launched at $2722 MSRP, while the Ryzen Threadripper 3990X debuted at $3990. On MSRP ($2722 vs $3990), the EPYC 7643P is $1268 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 7643P delivers 28.4 pts/$ vs 20.0 pts/$ for the Ryzen Threadripper 3990X — making the EPYC 7643P the 34.6% better value option.