Core i9-11900KB vs Ryzen 5 7640HS

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 i9-11900KB

2021

Why buy it

✅Better for gaming: +20.2% higher average FPS across 2 shared CPU benchmark tests.
✅+50% larger total L3 cache (24 MB vs 16 MB).
✅100+% more PCIe lanes (20 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel UHD Graphics, while Ryzen 5 7640HS needs a discrete GPU.

Trade-offs

❌Lower PassMark (22,693 vs 22,921).
❌Launch MSRP is still $539 MSRP, while Ryzen 5 7640HS mostly shows up through inconsistent older-market listings.
❌85.7% higher power demand at 65W vs 35W.
❌Older platform position on FCBGA1787 with DDR4, while Ryzen 5 7640HS moves to FP8 and DDR5.

Ryzen 5 7640HS

2023

Why buy it

✅+1% higher PassMark.
✅Draws 35W instead of 65W, a 30W reduction.
✅Newer platform on FP8 with DDR5 support instead of FCBGA1787 and DDR4.

Trade-offs

❌Worse for gaming: lower average FPS than Core i9-11900KB across 2 shared CPU benchmark tests.
❌Smaller total L3 cache (16 MB vs 24 MB).
❌No integrated graphics, while Core i9-11900KB can still boot and troubleshoot without a discrete GPU.

Core i9-11900KB

2021

Ryzen 5 7640HS

2023

Why buy it

✅Better for gaming: +20.2% higher average FPS across 2 shared CPU benchmark tests.
✅+50% larger total L3 cache (24 MB vs 16 MB).
✅100+% more PCIe lanes (20 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel UHD Graphics, while Ryzen 5 7640HS needs a discrete GPU.

Why buy it

✅+1% higher PassMark.
✅Draws 35W instead of 65W, a 30W reduction.
✅Newer platform on FP8 with DDR5 support instead of FCBGA1787 and DDR4.

Trade-offs

❌Lower PassMark (22,693 vs 22,921).
❌Launch MSRP is still $539 MSRP, while Ryzen 5 7640HS mostly shows up through inconsistent older-market listings.
❌85.7% higher power demand at 65W vs 35W.
❌Older platform position on FCBGA1787 with DDR4, while Ryzen 5 7640HS moves to FP8 and DDR5.

Trade-offs

❌Worse for gaming: lower average FPS than Core i9-11900KB across 2 shared CPU benchmark tests.
❌Smaller total L3 cache (16 MB vs 24 MB).
❌No integrated graphics, while Core i9-11900KB can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Ryzen 5 7640HS better than Core i9-11900KB?

It depends on what matters more to you. For gaming, Core i9-11900KB is ahead with a 20.2% average FPS lead across 2 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Ryzen 5 7640HS pulls ahead with 1% better PassMark. Core i9-11900KB also has the bigger cache pool with 50% larger total L3 cache (24 MB vs 16 MB).

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

For streaming, content creation, and heavier multitasking, Ryzen 5 7640HS is the better fit. You are getting 1% better PassMark, backed by 6 cores and 12 threads.

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

Ryzen 5 7640HS is the smarter buy by a wide margin for any fresh desktop build. Ryzen 5 7640HS is at an unclear MSRP at unclear MSRP versus $539 MSRP, and it gives you 1% better PassMark. Core i9-11900KB only looks good on raw value math because it is a cheap legacy laptop CPU, not because it is a serious desktop gaming option. It simply cannot keep up with modern games.

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

Ryzen 5 7640HS is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2021), a healthier platform with FP8 and DDR5 instead of FCBGA1787, and more multi-core headroom with 6 cores / 12 threads instead of 8/16. 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 i9-11900KB Benchmark Check

Ryzen 5 7640HS Benchmark Check

Path of Exile 2

Preset	Core i9-11900KB	Ryzen 5 7640HS
1080p
low	250 FPS	267 FPS
medium	231 FPS	241 FPS
high	194 FPS	202 FPS
ultra	167 FPS	174 FPS
1440p
low	222 FPS	235 FPS
medium	186 FPS	193 FPS
high	152 FPS	157 FPS
ultra	134 FPS	139 FPS
4K
low	155 FPS	163 FPS
medium	131 FPS	136 FPS
high	102 FPS	105 FPS
ultra	89 FPS	92 FPS

Open Core i9-11900KB Open Ryzen 5 7640HS

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i9-11900KB	Ryzen 5 7640HS
1080p
low	567 FPS	433 FPS
medium	490 FPS	359 FPS
high	410 FPS	313 FPS
ultra	374 FPS	276 FPS
1440p
low	477 FPS	376 FPS
medium	421 FPS	326 FPS
high	365 FPS	286 FPS
ultra	317 FPS	244 FPS
4K
low	294 FPS	270 FPS
medium	262 FPS	239 FPS
high	247 FPS	222 FPS
ultra	219 FPS	186 FPS

Open Core i9-11900KB Open Ryzen 5 7640HS

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i9-11900KB	Ryzen 5 7640HS
1080p
low	567 FPS	573 FPS
medium	567 FPS	573 FPS
high	488 FPS	573 FPS
ultra	388 FPS	573 FPS
1440p
low	567 FPS	573 FPS
medium	501 FPS	573 FPS
high	426 FPS	521 FPS
ultra	346 FPS	450 FPS
4K
low	430 FPS	505 FPS
medium	369 FPS	446 FPS
high	325 FPS	381 FPS
ultra	260 FPS	316 FPS

Open Core i9-11900KB Open Ryzen 5 7640HS

League of Legends

League of Legends

Valorant

Preset	Core i9-11900KB	Ryzen 5 7640HS
1080p
low	567 FPS	573 FPS
medium	567 FPS	573 FPS
high	567 FPS	573 FPS
ultra	567 FPS	573 FPS
1440p
low	567 FPS	573 FPS
medium	567 FPS	573 FPS
high	567 FPS	573 FPS
ultra	492 FPS	546 FPS
4K
low	523 FPS	566 FPS
medium	469 FPS	507 FPS
high	417 FPS	451 FPS
ultra	358 FPS	387 FPS

Open Core i9-11900KB Open Ryzen 5 7640HS

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i9-11900KB and Ryzen 5 7640HS

Core i9-11900KB

The Core i9-11900KB is manufactured by Intel. It was released in Maio 2021 (4 years ago). It is based on the Tiger Lake-H (2021) architecture. It features 8 cores and 16 threads. Base frequency is 3.3 GHz, with boost up to 4.9 GHz. L3 cache: 24 MB (total). L2 cache: 1.25 MB (per core). Built on 10 nm SuperFin process technology. Socket: FCBGA1787. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 22,693 points. Launch price was $539.

Ryzen 5 7640HS

The Ryzen 5 7640HS is manufactured by AMD. It was released in Janeiro 2023 (2 years ago). It is based on the Phoenix-HS (Zen 4) (2023) architecture. It features 6 cores and 12 threads. Base frequency is 4.3 GHz, with boost up to 5 GHz. L3 cache: 16 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FP8. Thermal design power (TDP): 35 Watt. Memory support: DDR5. Passmark benchmark score: 22,921 points. Launch price was $299.

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Processing Power

The Core i9-11900KB packs 8 cores / 16 threads, while the Ryzen 5 7640HS offers 6 cores / 12 threads — the Core i9-11900KB has 2 more cores. Boost clocks reach 4.9 GHz on the Core i9-11900KB versus 5 GHz on the Ryzen 5 7640HS — a 2% clock advantage for the Ryzen 5 7640HS (base: 3.3 GHz vs 4.3 GHz). The Core i9-11900KB uses the Tiger Lake-H (2021) architecture (10 nm SuperFin), while the Ryzen 5 7640HS uses Phoenix-HS (Zen 4) (2023) (4 nm). In PassMark, the Core i9-11900KB scores 22,693 against the Ryzen 5 7640HS's 22,921 — a 1% lead for the Ryzen 5 7640HS. L3 cache: 24 MB (total) on the Core i9-11900KB vs 16 MB (total) on the Ryzen 5 7640HS.

Feature	Core i9-11900KB	Ryzen 5 7640HS
Cores / Threads	8 / 16+33%	6 / 12
Boost Clock	4.9 GHz	5 GHz+2%
Base Clock	3.3 GHz	4.3 GHz+30%
L3 Cache	24 MB (total)+50%	16 MB (total)
L2 Cache	1.25 MB (per core)+25%	1 MB (per core)
Process	10 nm SuperFin	4 nm-60%
Architecture	Tiger Lake-H (2021)	Phoenix-HS (Zen 4) (2023)
PassMark	22,693	22,921+1%
Cinebench R23 Multi	12,264	—
Geekbench 6 Multi	10,645	—

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Memory & Platform

The Core i9-11900KB uses the FCBGA1787 socket (PCIe 3.0), while the Ryzen 5 7640HS uses FP8 (PCIe 4.0) — making them incompatible on the same motherboard.

Feature	Core i9-11900KB	Ryzen 5 7640HS
Socket	FCBGA1787	FP8
PCIe Generation	PCIe 3.0	PCIe 4.0+33%
Max RAM Speed	DDR4-3200	—
Max RAM Capacity	128 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	20	—

🔧

Advanced Features

Virtualization: VT-x, VT-d (Core i9-11900KB) / not specified (Ryzen 5 7640HS). The Core i9-11900KB includes integrated graphics (Intel UHD Graphics), while the Ryzen 5 7640HS requires a dedicated GPU.