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.

Ryzen 9 5900X

2020

Why buy it

✅Better for gaming: +29.7% higher average FPS across 50 shared CPU benchmark tests.
✅+77.8% larger total L3 cache (64 MB vs 36 MB).
✅Costs $2,590 less on MSRP ($549 MSRP vs $3,139 MSRP).
✅Delivers 522.1% more PassMark for each dollar spent, at 71.0 vs 11.4 PassMark/$ ($549 MSRP vs $3,139 MSRP).
✅Draws 105W instead of 165W, a 60W reduction.

Trade-offs

❌Less compelling for workstation-style loads than Xeon Gold 6338T, which brings 24 cores / 48 threads and 64 PCIe lanes.
❌No AVX-512 support for niche heavy compute workloads where it can matter.

Xeon Gold 6338T

2021

Why buy it

✅Better for workstations and heavier parallel workloads: 24 cores / 48 threads, plus 64 PCIe lanes vs 24.
✅166.7% more PCIe lanes (64 vs 24) for storage and expansion-heavy builds.
✅AVX-512 support for select workstation, AI, and scientific workloads.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.
❌Lower PassMark (35,801 vs 38,955).
❌Smaller total L3 cache (36 MB vs 64 MB).
❌Lower PassMark per dollar, at 11.4 vs 71.0 PassMark/$ ($3,139 MSRP vs $549 MSRP).
❌57.1% higher power demand at 165W vs 105W.

Ryzen 9 5900X

2020

Xeon Gold 6338T

2021

Why buy it

✅Better for gaming: +29.7% higher average FPS across 50 shared CPU benchmark tests.
✅+77.8% larger total L3 cache (64 MB vs 36 MB).
✅Costs $2,590 less on MSRP ($549 MSRP vs $3,139 MSRP).
✅Delivers 522.1% more PassMark for each dollar spent, at 71.0 vs 11.4 PassMark/$ ($549 MSRP vs $3,139 MSRP).
✅Draws 105W instead of 165W, a 60W reduction.

Why buy it

✅Better for workstations and heavier parallel workloads: 24 cores / 48 threads, plus 64 PCIe lanes vs 24.
✅166.7% more PCIe lanes (64 vs 24) for storage and expansion-heavy builds.
✅AVX-512 support for select workstation, AI, and scientific workloads.

Trade-offs

❌Less compelling for workstation-style loads than Xeon Gold 6338T, which brings 24 cores / 48 threads and 64 PCIe lanes.
❌No AVX-512 support for niche heavy compute workloads where it can matter.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.
❌Lower PassMark (35,801 vs 38,955).
❌Smaller total L3 cache (36 MB vs 64 MB).
❌Lower PassMark per dollar, at 11.4 vs 71.0 PassMark/$ ($3,139 MSRP vs $549 MSRP).
❌57.1% higher power demand at 165W vs 105W.

Quick Answers

So, is Ryzen 9 5900X better than Xeon Gold 6338T?

Not in a simple one-size-fits-all way. Xeon Gold 6338T makes more sense for workstation-style multi-core throughput, while Ryzen 9 5900X is the better mainstream desktop choice for gaming, platform cost, and day-to-day practicality.

Which one is better for gaming?

If gaming is the priority, Ryzen 9 5900X is the better pick here. According to our tests, it delivers 29.7% 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, Ryzen 9 5900X is the better fit. You are getting 8.8% better PassMark, backed by 12 cores and 24 threads. It also carries the larger cache pool with 77.8% larger total L3 cache (64 MB vs 36 MB).

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

Ryzen 9 5900X is the smarter buy today. Ryzen 9 5900X is $2,590 cheaper on MSRP at $549 MSRP versus $3,139 MSRP, and it gives you a 29.7% average FPS lead across 50 shared CPU game tests in our data. It is also 522.1% better value on MSRP (71.0 vs 11.4 PassMark/$), 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 Gold 6338T is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2021 vs 2020) and AVX-512 support for heavier modern compute workloads. That makes it the safer long-term pick.

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.

Ryzen 9 5900X Benchmark Check

Xeon Gold 6338T Benchmark Check

Path of Exile 2

Preset	Ryzen 9 5900X	Xeon Gold 6338T
1080p
low	323 FPS	185 FPS
medium	291 FPS	149 FPS
high	243 FPS	120 FPS
ultra	193 FPS	94 FPS
1440p
low	307 FPS	154 FPS
medium	248 FPS	120 FPS
high	192 FPS	93 FPS
ultra	157 FPS	74 FPS
4K
low	193 FPS	72 FPS
medium	156 FPS	60 FPS
high	115 FPS	46 FPS
ultra	103 FPS	38 FPS

Open Ryzen 9 5900X Open Xeon Gold 6338T

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 5900X	Xeon Gold 6338T
1080p
low	772 FPS	232 FPS
medium	647 FPS	208 FPS
high	508 FPS	172 FPS
ultra	450 FPS	139 FPS
1440p
low	619 FPS	199 FPS
medium	536 FPS	180 FPS
high	443 FPS	154 FPS
ultra	364 FPS	119 FPS
4K
low	365 FPS	124 FPS
medium	318 FPS	114 FPS
high	289 FPS	101 FPS
ultra	255 FPS	81 FPS

Open Ryzen 9 5900X Open Xeon Gold 6338T

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 5900X	Xeon Gold 6338T
1080p
low	832 FPS	895 FPS
medium	645 FPS	817 FPS
high	558 FPS	766 FPS
ultra	459 FPS	680 FPS
1440p
low	721 FPS	746 FPS
medium	565 FPS	643 FPS
high	488 FPS	603 FPS
ultra	407 FPS	535 FPS
4K
low	511 FPS	479 FPS
medium	421 FPS	378 FPS
high	374 FPS	334 FPS
ultra	308 FPS	272 FPS

Open Ryzen 9 5900X Open Xeon Gold 6338T

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 5900X	Xeon Gold 6338T
1080p
low	974 FPS	895 FPS
medium	974 FPS	813 FPS
high	934 FPS	698 FPS
ultra	826 FPS	600 FPS
1440p
low	959 FPS	701 FPS
medium	843 FPS	616 FPS
high	726 FPS	527 FPS
ultra	617 FPS	451 FPS
4K
low	694 FPS	506 FPS
medium	621 FPS	452 FPS
high	541 FPS	396 FPS
ultra	437 FPS	344 FPS

Open Ryzen 9 5900X Open Xeon Gold 6338T

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 5900X and Xeon Gold 6338T

Ryzen 9 5900X

The Ryzen 9 5900X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen3) (2020−2022) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 4.8 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4-3200. Passmark benchmark score: 38,955 points. Launch price was $549.

Xeon Gold 6338T

The Xeon Gold 6338T is manufactured by Intel. It was released in 2015-01-01. It is based on the Ice Lake-SP (2021) architecture. It features 24 cores and 48 threads. Base frequency is 2.1 GHz, with boost up to 3.4 GHz. L3 cache: 36 MB (total). L2 cache: 1 MB (per core). Built on 10 nm process technology. Socket: LGA4189. Thermal design power (TDP): 165 Watt. Memory support: DDR4-3200. Passmark benchmark score: 35,801 points. Launch price was $800.

⚡

Processing Power

The Ryzen 9 5900X packs 12 cores / 24 threads, while the Xeon Gold 6338T offers 24 cores / 48 threads — the Xeon Gold 6338T has 12 more cores. Boost clocks reach 4.8 GHz on the Ryzen 9 5900X versus 3.4 GHz on the Xeon Gold 6338T — a 34.1% clock advantage for the Ryzen 9 5900X (base: 3.7 GHz vs 2.1 GHz). The Ryzen 9 5900X uses the Vermeer (Zen3) (2020−2022) architecture (7 nm, 12 nm), while the Xeon Gold 6338T uses Ice Lake-SP (2021) (10 nm). In PassMark, the Ryzen 9 5900X scores 38,955 against the Xeon Gold 6338T's 35,801 — a 8.4% lead for the Ryzen 9 5900X. L3 cache: 64 MB on the Ryzen 9 5900X vs 36 MB (total) on the Xeon Gold 6338T.

Feature	Ryzen 9 5900X	Xeon Gold 6338T
Cores / Threads	12 / 24	24 / 48+100%
Boost Clock	4.8 GHz+41%	3.4 GHz
Base Clock	3.7 GHz+76%	2.1 GHz
L3 Cache	64 MB+78%	36 MB (total)
L2 Cache	512K (per core)	1 MB (per core)+100%
Process	7 nm, 12 nm-30%	10 nm
Architecture	Vermeer (Zen3) (2020−2022)	Ice Lake-SP (2021)
PassMark	38,955+9%	35,801
Cinebench R23 Multi	21,000	—
Geekbench 6 Single	2,174	—
Geekbench 6 Multi	11,888	—

🧠

Memory & Platform

The Ryzen 9 5900X uses the AM4 socket (PCIe 4.0), while the Xeon Gold 6338T uses LGA4189 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the Ryzen 9 5900X versus 3200 on the Xeon Gold 6338T — the Xeon Gold 6338T supports 199.5% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Gold 6338T supports up to 6144 of RAM compared to 128 GB — 191.8% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 5900X) vs 8 (Xeon Gold 6338T). PCIe lanes: 24 (Ryzen 9 5900X) vs 64 (Xeon Gold 6338T) — the Xeon Gold 6338T offers 40 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X) and C621A (Xeon Gold 6338T).

Feature	Ryzen 9 5900X	Xeon Gold 6338T
Socket	AM4	LGA4189
PCIe Generation	PCIe 4.0	PCIe 4.0
Max RAM Speed	DDR4-3200	3200+79900%
Max RAM Capacity	128 GB+2184433%	6144
RAM Channels	2	8+300%
ECC Support	Yes	Yes
PCIe Lanes	24	64+167%

🔧

Advanced Features

Only the Ryzen 9 5900X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Xeon Gold 6338T supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: AMD-V (Ryzen 9 5900X) vs VT-x, VT-d (Xeon Gold 6338T). Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K; Xeon Gold 6338T rivals EPYC 7443P.

Feature	Ryzen 9 5900X	Xeon Gold 6338T
Integrated GPU	No	No
IGPU Model	—	None
Unlocked	Yes	No
AVX-512	No	Yes
Virtualization	AMD-V	VT-x, VT-d
Target Use	Workstation	—

💰

Value Analysis

The Ryzen 9 5900X launched at $549 MSRP, while the Xeon Gold 6338T debuted at $3139. On MSRP ($549 vs $3139), the Ryzen 9 5900X is $2590 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 9 5900X delivers 71.0 pts/$ vs 11.4 pts/$ for the Xeon Gold 6338T — making the Ryzen 9 5900X the 144.6% better value option.