Celeron N4505 vs Core i7-840QM

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.

Celeron N4505 vs Core i7-840QM FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Celeron N4505 vs Core i7-840QM: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

Celeron N4505

2021

Why buy it

✅+0.6% higher PassMark.
✅Draws 10W instead of 45W, a 35W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-840QM across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (4 MB vs 8 MB).

Core i7-840QM

2010

Why buy it

✅Better for gaming: +6.2% higher average FPS across 50 shared CPU benchmark tests.
✅+100% larger total L3 cache (8 MB vs 4 MB).
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (2,025 vs 2,037).
❌350% higher power demand at 45W vs 10W.

Quick Answers

So, is Celeron N4505 better than Core i7-840QM?

It depends on what you want from the system. For gaming, Core i7-840QM is ahead with a 6.2% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Celeron N4505 pulls ahead with 0.6% better PassMark. Core i7-840QM also has the bigger cache pool with 100% larger total L3 cache (8 MB vs 4 MB).

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

For streaming, content creation, and heavier multitasking, Celeron N4505 is the stronger fit. You are getting 0.6% better PassMark, backed by 2 cores and 2 threads.

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

Celeron N4505 still makes the most sense overall. Celeron N4505 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 0.6% better PassMark.

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

Celeron N4505 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2021 vs 2010) and more multi-core headroom with 2 cores / 2 threads instead of 4/8. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Celeron N4505 vs Core i7-840QM Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

Celeron N4505

The Celeron N4505 is manufactured by Intel. It was released in 2007-01-01. It is based on the Jasper Lake (2021) architecture. It features 2 cores and 2 threads. Base frequency is 2 GHz, with boost up to 2.9 GHz. L3 cache: 4 MB (total). L2 cache: 1.5 MB (total). Built on 10 nm process technology. Socket: BGA1338. Thermal design power (TDP): 10 Watt. Memory support: DDR4. Passmark benchmark score: 2,037 points. Launch price was $69.

Core i7-840QM

The Core i7-840QM is manufactured by Intel. It was released in 20 June 2010 (15 years ago). It is based on the Clarksfield (2009−2010) architecture. It features 4 cores and 8 threads. Base frequency is 1.86 GHz, with boost up to 3.2 GHz. L3 cache: 8 MB (total). L2 cache: 256 kB (per core). Built on 45 nm process technology. Socket: PGA988. Thermal design power (TDP): 45 Watt. Memory support: DDR3. Passmark benchmark score: 2,025 points. Launch price was $568.

⚡

Processing Power

The Celeron N4505 packs 2 cores / 2 threads, while the Core i7-840QM offers 4 cores / 8 threads — the Core i7-840QM has 2 more cores. Boost clocks reach 2.9 GHz on the Celeron N4505 versus 3.2 GHz on the Core i7-840QM — a 9.8% clock advantage for the Core i7-840QM (base: 2 GHz vs 1.86 GHz). The Celeron N4505 uses the Jasper Lake (2021) architecture (10 nm), while the Core i7-840QM uses Clarksfield (2009−2010) (45 nm). In PassMark, the Celeron N4505 scores 2,037 against the Core i7-840QM's 2,025 — a 0.6% lead for the Celeron N4505. L3 cache: 4 MB (total) on the Celeron N4505 vs 8 MB (total) on the Core i7-840QM.

Feature	Celeron N4505	Core i7-840QM
Cores / Threads	2 / 2	4 / 8+100%
Boost Clock	2.9 GHz	3.2 GHz+10%
Base Clock	2 GHz+8%	1.86 GHz
L3 Cache	4 MB (total)	8 MB (total)+100%
L2 Cache	1.5 MB (total)+500%	256 kB (per core)
Process	10 nm-78%	45 nm
Architecture	Jasper Lake (2021)	Clarksfield (2009−2010)
PassMark	2,037	2,025
Geekbench 6 Single	—	390
Geekbench 6 Multi	—	1,050

🧠

Memory & Platform

The Celeron N4505 uses the BGA1338 socket (PCIe 4.0), while the Core i7-840QM uses PGA988 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Celeron N4505	Core i7-840QM
Socket	BGA1338	PGA988
PCIe Generation	PCIe 4.0+100%	PCIe 2.0
Max RAM Speed	—	DDR3-1333
Max RAM Capacity	—	8 GB
RAM Channels	—	2
ECC Support	—	No
PCIe Lanes	—	16