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.

Core Ultra 7 265K

2024

Why buy it

✅Better for gaming: +25.9% higher average FPS across 39 shared CPU benchmark tests.
✅Costs $190 less on MSRP ($309 MSRP vs $499 MSRP).
✅Delivers 210.4% more PassMark for each dollar spent, at 190.3 vs 61.3 PassMark/$ ($309 MSRP vs $499 MSRP).
✅Newer platform on LGA1851 with DDR5 support instead of AM4 and DDR4.
✅Integrated graphics onboard with Arc Graphics 64EU, while Ryzen 9 3900 needs a discrete GPU.

Trade-offs

❌Smaller total L3 cache (30 MB vs 64 MB).
❌92.3% higher power demand at 125W vs 65W.
❌No boxed cooler included, unlike Ryzen 9 3900.

Ryzen 9 3900

2019

Why buy it

✅+113.3% larger total L3 cache (64 MB vs 30 MB).
✅Draws 65W instead of 125W, a 60W reduction.
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Wraith Prism), unlike Core Ultra 7 265K.

Trade-offs

❌Worse for gaming: lower average FPS than Core Ultra 7 265K across 39 shared CPU benchmark tests.
❌Lower Cinebench R23 multi-core (17,700 vs 36,309).
❌Lower PassMark per dollar, at 61.3 vs 190.3 PassMark/$ ($499 MSRP vs $309 MSRP).
❌Older platform position on AM4 with DDR4, while Core Ultra 7 265K moves to LGA1851 and DDR5.
❌No integrated graphics, while Core Ultra 7 265K can still boot and troubleshoot without a discrete GPU.

Core Ultra 7 265K

2024

Ryzen 9 3900

2019

Why buy it

✅Better for gaming: +25.9% higher average FPS across 39 shared CPU benchmark tests.
✅Costs $190 less on MSRP ($309 MSRP vs $499 MSRP).
✅Delivers 210.4% more PassMark for each dollar spent, at 190.3 vs 61.3 PassMark/$ ($309 MSRP vs $499 MSRP).
✅Newer platform on LGA1851 with DDR5 support instead of AM4 and DDR4.
✅Integrated graphics onboard with Arc Graphics 64EU, while Ryzen 9 3900 needs a discrete GPU.

Why buy it

✅+113.3% larger total L3 cache (64 MB vs 30 MB).
✅Draws 65W instead of 125W, a 60W reduction.
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Wraith Prism), unlike Core Ultra 7 265K.

Trade-offs

❌Smaller total L3 cache (30 MB vs 64 MB).
❌92.3% higher power demand at 125W vs 65W.
❌No boxed cooler included, unlike Ryzen 9 3900.

Trade-offs

❌Worse for gaming: lower average FPS than Core Ultra 7 265K across 39 shared CPU benchmark tests.
❌Lower Cinebench R23 multi-core (17,700 vs 36,309).
❌Lower PassMark per dollar, at 61.3 vs 190.3 PassMark/$ ($499 MSRP vs $309 MSRP).
❌Older platform position on AM4 with DDR4, while Core Ultra 7 265K moves to LGA1851 and DDR5.
❌No integrated graphics, while Core Ultra 7 265K can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core Ultra 7 265K better than Ryzen 9 3900?

Yes. Core Ultra 7 265K is the better overall CPU here. You are getting a 25.9% average FPS lead across 39 shared CPU game tests in our data, 105.1% better Cinebench R23 multi-core, 92.2% 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, Core Ultra 7 265K is the better pick here. According to our tests, it delivers 25.9% more average FPS across 39 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Core Ultra 7 265K is the better fit. You are getting 105.1% better Cinebench R23 multi-core, backed by 20 cores and 20 threads.

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

Core Ultra 7 265K is the smarter buy today. Core Ultra 7 265K is $190 cheaper on MSRP at $309 MSRP versus $499 MSRP, and it gives you a 25.9% average FPS lead across 39 shared CPU game tests in our data. It is also 210.4% better value on MSRP (190.3 vs 61.3 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play on paper. That said, if you already own a compatible AM4 + DDR4 setup, Ryzen 9 3900 can still make sense as a platform-matched option because it avoids a motherboard and RAM swap, but on MSRP alone you would want to find it meaningfully cheaper in real-world listings before that path becomes easy to justify.

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

Core Ultra 7 265K is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2019), a healthier platform with LGA1851 and DDR5 instead of AM4, and more multi-core headroom with 20 cores / 20 threads instead of 12/24. 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.

Core Ultra 7 265K Benchmark Check

Ryzen 9 3900 Benchmark Check

Path of Exile 2

Preset	Core Ultra 7 265K	Ryzen 9 3900
1080p
low	305 FPS	159 FPS
medium	290 FPS	130 FPS
high	244 FPS	111 FPS
ultra	205 FPS	92 FPS
1440p
low	240 FPS	144 FPS
medium	201 FPS	115 FPS
high	163 FPS	94 FPS
ultra	142 FPS	78 FPS
4K
low	158 FPS	78 FPS
medium	132 FPS	67 FPS
high	102 FPS	53 FPS
ultra	89 FPS	43 FPS

Open Core Ultra 7 265K Open Ryzen 9 3900

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core Ultra 7 265K	Ryzen 9 3900
1080p
low	778 FPS	534 FPS
medium	656 FPS	470 FPS
high	548 FPS	384 FPS
ultra	491 FPS	342 FPS
1440p
low	673 FPS	460 FPS
medium	595 FPS	411 FPS
high	499 FPS	347 FPS
ultra	422 FPS	289 FPS
4K
low	395 FPS	288 FPS
medium	357 FPS	261 FPS
high	335 FPS	238 FPS
ultra	292 FPS	213 FPS

Open Core Ultra 7 265K Open Ryzen 9 3900

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core Ultra 7 265K	Ryzen 9 3900
1080p
low	851 FPS	709 FPS
medium	694 FPS	589 FPS
high	617 FPS	536 FPS
ultra	528 FPS	472 FPS
1440p
low	731 FPS	541 FPS
medium	599 FPS	448 FPS
high	521 FPS	401 FPS
ultra	442 FPS	347 FPS
4K
low	517 FPS	394 FPS
medium	436 FPS	315 FPS
high	396 FPS	279 FPS
ultra	337 FPS	224 FPS

Open Core Ultra 7 265K Open Ryzen 9 3900

League of Legends

League of Legends

Valorant

Preset	Core Ultra 7 265K	Ryzen 9 3900
1080p
low	1128 FPS	765 FPS
medium	1015 FPS	765 FPS
high	889 FPS	711 FPS
ultra	808 FPS	638 FPS
1440p
low	892 FPS	725 FPS
medium	789 FPS	644 FPS
high	687 FPS	553 FPS
ultra	611 FPS	486 FPS
4K
low	604 FPS	516 FPS
medium	542 FPS	469 FPS
high	489 FPS	411 FPS
ultra	432 FPS	360 FPS

Open Core Ultra 7 265K Open Ryzen 9 3900

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core Ultra 7 265K and Ryzen 9 3900

Core Ultra 7 265K

The Core Ultra 7 265K is manufactured by Intel. It was released in 24 October 2024 (1 year ago). It is based on the Arrow Lake-S (2024−2025) architecture. It features 20 cores and 20 threads. Base frequency is 3.9 GHz, with boost up to 5.5 GHz. L3 cache: 30 MB (total). L2 cache: 3 MB (per core). Built on 3 nm process technology. Socket: LGA1851. Thermal design power (TDP): 125 Watt. Memory support: DDR5-6400. Passmark benchmark score: 58,789 points. Launch price was $394.

Ryzen 9 3900

The Ryzen 9 3900 is manufactured by AMD. It was released in 24 September 2019 (6 years ago). It is based on the Matisse (Zen 2) (2019−2020) architecture. It features 12 cores and 24 threads. Base frequency is 3.1 GHz, with boost up to 4.3 GHz. L3 cache: 64 MB. L2 cache: 512 kB (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 65 Watt. Memory support: DDR4-3200. Passmark benchmark score: 30,588 points. Launch price was $499.

⚡

Processing Power

The Core Ultra 7 265K packs 20 cores / 20 threads, while the Ryzen 9 3900 offers 12 cores / 24 threads — the Core Ultra 7 265K has 8 more cores. Boost clocks reach 5.5 GHz on the Core Ultra 7 265K versus 4.3 GHz on the Ryzen 9 3900 — a 24.5% clock advantage for the Core Ultra 7 265K (base: 3.9 GHz vs 3.1 GHz). The Core Ultra 7 265K uses the Arrow Lake-S (2024−2025) architecture (3 nm), while the Ryzen 9 3900 uses Matisse (Zen 2) (2019−2020) (7 nm, 12 nm). In PassMark, the Core Ultra 7 265K scores 58,789 against the Ryzen 9 3900's 30,588 — a 63.1% lead for the Core Ultra 7 265K. Cinebench R23 multi-core: 36,309 vs 17,700 (68.9% advantage for the Core Ultra 7 265K). Geekbench 6 single-core — the metric most relevant to gaming — records 3,283 vs 1,713, a 62.9% lead for the Core Ultra 7 265K that directly translates to higher frame rates. Multi-core Geekbench: 22,293 vs 10,983 (68% advantage for the Core Ultra 7 265K). L3 cache: 30 MB (total) on the Core Ultra 7 265K vs 64 MB on the Ryzen 9 3900.

Feature	Core Ultra 7 265K	Ryzen 9 3900
Cores / Threads	20 / 20+67%	12 / 24
Boost Clock	5.5 GHz+28%	4.3 GHz
Base Clock	3.9 GHz+26%	3.1 GHz
L3 Cache	30 MB (total)	64 MB+113%
L2 Cache	3 MB (per core)+500%	512 kB (per core)
Process	3 nm-57%	7 nm, 12 nm
Architecture	Arrow Lake-S (2024−2025)	Matisse (Zen 2) (2019−2020)
PassMark	58,789+92%	30,588
Cinebench R23 Multi	36,309+105%	17,700
Geekbench 6 Single	3,283+92%	1,713
Geekbench 6 Multi	22,293+103%	10,983

🧠

Memory & Platform

The Core Ultra 7 265K uses the LGA1851 socket (PCIe 5.0), while the Ryzen 9 3900 uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-6400 on the Core Ultra 7 265K versus DDR4-3200 on the Ryzen 9 3900 — the Core Ultra 7 265K supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core Ultra 7 265K supports up to 256 GB of RAM compared to 128 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Core Ultra 7 265K) vs 24 (Ryzen 9 3900) — the Ryzen 9 3900 offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: LGA1851 (Core Ultra 7 265K) and X570,B550,X470,B450 (Ryzen 9 3900).

Feature	Core Ultra 7 265K	Ryzen 9 3900
Socket	LGA1851	AM4
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
Max RAM Speed	DDR5-6400+25%	DDR4-3200
Max RAM Capacity	256 GB+100%	128 GB
RAM Channels	2	2
ECC Support	Yes	No
PCIe Lanes	20	24+20%

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Only the Core Ultra 7 265K supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (Core Ultra 7 265K) vs AMD-V (Ryzen 9 3900). The Core Ultra 7 265K includes integrated graphics (Arc Graphics 64EU), while the Ryzen 9 3900 requires a dedicated GPU. Primary use case: Ryzen 9 3900 targets Workstation Desktop (low power). Direct competitor: Ryzen 9 3900 rivals Core i9-9900.

Feature	Core Ultra 7 265K	Ryzen 9 3900
Integrated GPU	Yes	No
IGPU Model	Arc Graphics 64EU	—
Unlocked	Yes	Yes
AVX-512	Yes	No
Virtualization	VT-x, VT-d	AMD-V
Target Use	—	Workstation Desktop (low power)

💰

Value Analysis

The Core Ultra 7 265K launched at $309 MSRP, while the Ryzen 9 3900 debuted at $499. On MSRP ($309 vs $499), the Core Ultra 7 265K is $190 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core Ultra 7 265K delivers 190.3 pts/$ vs 61.3 pts/$ for the Ryzen 9 3900 — making the Core Ultra 7 265K the 102.5% better value option.