EPYC 7643 vs Xeon 6737P

CPU

GPU

EPYC 7643

48 Cores96 Thrd225 WWMax: 3.6 GHz2021

Popular choices:

•••••••••

Xeon 6737P

32 Cores64 Thrd270 WWMax: 4 GHz2025

Popular choices:

•••••••••

Performance Spectrum - CPU

EPYC 7643

48 / 96

76,050

0.0%

Ryzen 7 8840HX

Ryzen 9 7900X3D

Ryzen 9 7945HX3D

Ryzen Threadripper PRO 9955WX

Ryzen Threadripper 9960X

Ryzen Threadripper 7970X

Ryzen Threadripper PRO 7985WX

Ryzen Threadripper 7980X

Xeon 6737P

32 / 64

79,634

+4.7%

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.

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

✅+77.8% larger total L3 cache (256 MB vs 144 MB).
✅Draws 225W instead of 270W, a 45W reduction.
✅45.5% more PCIe lanes (128 vs 88) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon 6737P across 47 shared CPU benchmark tests.
❌Lower Geekbench multi-core (15,000 vs 45,000).
❌Older platform position on SP3 with DDR4, while Xeon 6737P moves to LGA4710 and DDR5.

Xeon 6737P

2025

Why buy it

✅Better for gaming: +3.4% higher average FPS across 47 shared CPU benchmark tests.
✅Newer platform on LGA4710 with DDR5 support instead of SP3 and DDR4.
✅AVX-512 support for select workstation, AI, and scientific workloads.

Trade-offs

❌Smaller total L3 cache (144 MB vs 256 MB).
❌20% higher power demand at 270W vs 225W.

EPYC 7643

2021

Xeon 6737P

2025

Why buy it

✅+77.8% larger total L3 cache (256 MB vs 144 MB).
✅Draws 225W instead of 270W, a 45W reduction.
✅45.5% more PCIe lanes (128 vs 88) for storage and expansion-heavy builds.

Why buy it

✅Better for gaming: +3.4% higher average FPS across 47 shared CPU benchmark tests.
✅Newer platform on LGA4710 with DDR5 support instead of SP3 and DDR4.
✅AVX-512 support for select workstation, AI, and scientific workloads.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon 6737P across 47 shared CPU benchmark tests.
❌Lower Geekbench multi-core (15,000 vs 45,000).
❌Older platform position on SP3 with DDR4, while Xeon 6737P moves to LGA4710 and DDR5.

Trade-offs

❌Smaller total L3 cache (144 MB vs 256 MB).
❌20% higher power demand at 270W vs 225W.

Quick Answers

So, is Xeon 6737P better than EPYC 7643?

Yes. Xeon 6737P is the better overall CPU here. You are getting a 3.4% average FPS lead across 47 shared CPU game tests in our data, 200% better Geekbench multi-core, 4.7% higher 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, Xeon 6737P is the better pick here. According to our tests, it delivers 3.4% more average FPS across 47 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Xeon 6737P is the better fit. You are getting 200% better Geekbench multi-core, backed by 32 cores and 64 threads.

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

Xeon 6737P is the smarter buy today. Xeon 6737P is in basically the same MSRP band at $4,995 MSRP versus $4,995 MSRP, and it gives you a 3.4% average FPS lead across 47 shared CPU game tests in our data. It is also 4.7% better value on MSRP (15.9 vs 15.2 PassMark/$), 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?

Xeon 6737P is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2025 vs 2021), a healthier platform with LGA4710 and DDR5 instead of SP3, more multi-core headroom with 32 cores / 64 threads instead of 48/96, 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

Xeon 6737P Benchmark Check

Path of Exile 2

Preset	EPYC 7643	Xeon 6737P
1080p
low	195 FPS	190 FPS
medium	159 FPS	166 FPS
high	129 FPS	132 FPS
ultra	100 FPS	106 FPS
1440p
low	160 FPS	156 FPS
medium	125 FPS	132 FPS
high	97 FPS	101 FPS
ultra	77 FPS	83 FPS
4K
low	72 FPS	71 FPS
medium	60 FPS	63 FPS
high	47 FPS	49 FPS
ultra	39 FPS	40 FPS

Open EPYC 7643 Open Xeon 6737P

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	EPYC 7643	Xeon 6737P
1080p
low	418 FPS	520 FPS
medium	367 FPS	460 FPS
high	299 FPS	376 FPS
ultra	234 FPS	309 FPS
1440p
low	344 FPS	425 FPS
medium	310 FPS	383 FPS
high	259 FPS	321 FPS
ultra	197 FPS	256 FPS
4K
low	211 FPS	262 FPS
medium	194 FPS	239 FPS
high	163 FPS	212 FPS
ultra	131 FPS	176 FPS

Open EPYC 7643 Open Xeon 6737P

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	EPYC 7643	Xeon 6737P
1080p
low	837 FPS	883 FPS
medium	698 FPS	813 FPS
high	650 FPS	768 FPS
ultra	574 FPS	677 FPS
1440p
low	602 FPS	756 FPS
medium	500 FPS	692 FPS
high	458 FPS	650 FPS
ultra	401 FPS	581 FPS
4K
low	430 FPS	510 FPS
medium	336 FPS	429 FPS
high	300 FPS	383 FPS
ultra	243 FPS	318 FPS

Open EPYC 7643 Open Xeon 6737P

League of Legends

League of Legends

Valorant

Preset	EPYC 7643	Xeon 6737P
1080p
low	977 FPS	985 FPS
medium	887 FPS	886 FPS
high	764 FPS	766 FPS
ultra	660 FPS	665 FPS
1440p
low	752 FPS	806 FPS
medium	656 FPS	701 FPS
high	561 FPS	604 FPS
ultra	482 FPS	519 FPS
4K
low	540 FPS	582 FPS
medium	481 FPS	521 FPS
high	422 FPS	462 FPS
ultra	364 FPS	397 FPS

Open EPYC 7643 Open Xeon 6737P

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of EPYC 7643 and Xeon 6737P

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.

Xeon 6737P

The Xeon 6737P is manufactured by Intel. It was released in 24 February 2025 (less than a year ago). It is based on the Granite Rapids (2024−2025) architecture. It features 32 cores and 64 threads. Base frequency is 2.9 GHz, with boost up to 4 GHz. L3 cache: 144 MB (total). L2 cache: 2 MB (per core). Built on Intel 3 nm process technology. Socket: LGA4710. Thermal design power (TDP): 270 Watt. Memory support: DDR5(6400MT/s). Passmark benchmark score: 79,634 points. Launch price was $4,995.

⚡

Processing Power

The EPYC 7643 packs 48 cores / 96 threads, while the Xeon 6737P offers 32 cores / 64 threads — the EPYC 7643 has 16 more cores. Boost clocks reach 3.6 GHz on the EPYC 7643 versus 4 GHz on the Xeon 6737P — a 10.5% clock advantage for the Xeon 6737P (base: 2.3 GHz vs 2.9 GHz). The EPYC 7643 uses the Milan (2021−2023) architecture (7 nm+), while the Xeon 6737P uses Granite Rapids (2024−2025) (Intel 3 nm). In PassMark, the EPYC 7643 scores 76,050 against the Xeon 6737P's 79,634 — a 4.6% lead for the Xeon 6737P. Geekbench 6 single-core — the metric most relevant to gaming — records 1,671 vs 2,000, a 17.9% lead for the Xeon 6737P that directly translates to higher frame rates. Multi-core Geekbench: 15,000 vs 45,000 (100% advantage for the Xeon 6737P). L3 cache: 256 MB (total) on the EPYC 7643 vs 144 MB (total) on the Xeon 6737P.

Feature	EPYC 7643	Xeon 6737P
Cores / Threads	48 / 96+50%	32 / 64
Boost Clock	3.6 GHz	4 GHz+11%
Base Clock	2.3 GHz	2.9 GHz+26%
L3 Cache	256 MB (total)+78%	144 MB (total)
L2 Cache	512 kB (per core)	2 MB (per core)+300%
Process	7 nm+	Intel 3 nm-57%
Architecture	Milan (2021−2023)	Granite Rapids (2024−2025)
PassMark	76,050	79,634+5%
Geekbench 6 Single	1,671	2,000+20%
Geekbench 6 Multi	15,000	45,000+200%

🧠

Memory & Platform

The EPYC 7643 uses the SP3 socket (PCIe 4.0), while the Xeon 6737P uses LGA4710 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the EPYC 7643 versus DDR5-6400 on the Xeon 6737P — the Xeon 6737P supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon 6737P supports up to 4096 GB of RAM compared to 4 TB — 199.6% more capacity for professional workloads. Both feature 8-channel memory with ECC support. PCIe lanes: 128 (EPYC 7643) vs 88 (Xeon 6737P) — the EPYC 7643 offers 40 more lanes for additional GPUs or NVMe drives. Chipset compatibility: SP3 (EPYC 7643) and C741 (Xeon 6737P).

Feature	EPYC 7643	Xeon 6737P
Socket	SP3	LGA4710
PCIe Generation	PCIe 4.0	PCIe 4.0
Max RAM Speed	DDR4-3200	DDR5-6400+25%
Max RAM Capacity	4 TB	4096 GB
RAM Channels	8	8
ECC Support	Yes	Yes
PCIe Lanes	128+45%	88

🔧

Advanced Features

Neither processor supports overclocking. Only the Xeon 6737P supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: AMD-V (EPYC 7643) vs VT-x, VT-d (Xeon 6737P). Primary use case: EPYC 7643 targets Server, Xeon 6737P targets High Performance Server. Direct competitor: EPYC 7643 rivals EPYC 7443P; Xeon 6737P rivals EPYC 9005.

Feature	EPYC 7643	Xeon 6737P
Integrated GPU	No	No
IGPU Model	None	None
Unlocked	No	No
AVX-512	No	Yes
Virtualization	AMD-V	VT-x, VT-d
Target Use	Server	High Performance Server

💰

Value Analysis

The EPYC 7643 launched at $4995 MSRP, while the Xeon 6737P debuted at $4995. On MSRP ($4995 vs $4995), the Xeon 6737P is $0 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 7643 delivers 15.2 pts/$ vs 15.9 pts/$ for the Xeon 6737P — making the Xeon 6737P the 4.6% better value option.