Core i7-2820QM vs Phenom II X3 P840

Core i7-2820QM vs Phenom II X3 P840 Performance Spectrum

Core i7-2820QM

4 / 8

4,379

0.0%

4,425

+1.1%

Ryzen Threadripper PRO 7965WX

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.

Core i7-2820QM vs Phenom II X3 P840 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.

Core i7-2820QM vs Phenom II X3 P840: Pros, Cons & Final Verdict

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

Core i7-2820QM

2011

Why buy it

✅Better for gaming: +10.9% higher average FPS across 50 shared CPU benchmark tests.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel HD Graphics 3000, while Phenom II X3 P840 needs a discrete GPU.

Trade-offs

❌Lower PassMark (4,379 vs 4,425).
❌Launch MSRP is still $568 MSRP, while Phenom II X3 P840 mostly shows up through inconsistent older-market listings.
❌2900% higher power demand at 45W vs 1.5W.

Phenom II X3 P840

2010

Why buy it

✅+1.1% higher PassMark.
✅Draws 2W instead of 45W, a 44W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-2820QM across 50 shared CPU benchmark tests.
❌No integrated graphics, while Core i7-2820QM can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core i7-2820QM better than Phenom II X3 P840?

It depends on what you want from the system. For gaming, Core i7-2820QM is ahead with a 10.9% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Phenom II X3 P840 pulls ahead with 1.1% better PassMark.

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

For streaming, content creation, and heavier multitasking, Phenom II X3 P840 is the stronger fit. You are getting 1.1% better PassMark, backed by 3 cores and 3 threads.

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

Core i7-2820QM is the better buy right now. Core i7-2820QM comes in at an unclear MSRP at $568 MSRP versus unclear MSRP, and it still gives you a 10.9% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Phenom II X3 P840 is still stronger for heavier multi-core work with 1.1% better PassMark. It is also 100.0% better value on MSRP (7.7 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Core i7-2820QM makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2011 vs 2010). That makes it the safer long-term bet.

Core i7-2820QM vs Phenom II X3 P840 Technical Specifications

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

Core i7-2820QM

The Core i7-2820QM is manufactured by Intel. It was released in 3 January 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 4 cores and 8 threads. Base frequency is 2.3 GHz, with boost up to 3.4 GHz. L3 cache: 8 MB (total). L2 cache: 256K (per core). Built on 32 nm process technology. Socket: PGA988. Thermal design power (TDP): 45 Watt. Memory support: DDR3-1066, DDR3-1333, DDR3-1600. Passmark benchmark score: 4,379 points. Launch price was $568.

Phenom II X3 P840

The Phenom II X3 P840 is manufactured by AMD. It was released in 2009-01-01. It is based on the Champlain (2010−2011) architecture. It features 3 cores and 3 threads. Max frequency: 1.9 GHz. L2 cache: 1.5 MB. Built on 45 nm process technology. Socket: S1. Thermal design power (TDP): 1.5 MB. Memory support: DDR3. Passmark benchmark score: 4,425 points. Launch price was $149.

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Processing Power

The Core i7-2820QM packs 4 cores / 8 threads, while the Phenom II X3 P840 offers 3 cores / 3 threads — the Core i7-2820QM has 1 more core. Boost clocks reach 3.4 GHz on the Core i7-2820QM versus 1.9 GHz on the Phenom II X3 P840 — a 56.6% clock advantage for the Core i7-2820QM. The Core i7-2820QM uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Phenom II X3 P840 uses Champlain (2010−2011) (45 nm). In PassMark, the Core i7-2820QM scores 4,379 against the Phenom II X3 P840's 4,425 — a 1% lead for the Phenom II X3 P840.

Feature	Core i7-2820QM	Phenom II X3 P840
Cores / Threads	4 / 8+33%	3 / 3
Boost Clock	3.4 GHz+79%	1.9 GHz
Base Clock	2.3 GHz	—
L3 Cache	8 MB (total)	—
L2 Cache	256K (per core)+16967%	1.5 MB
Process	32 nm-29%	45 nm
Architecture	Sandy Bridge (2011−2013)	Champlain (2010−2011)
PassMark	4,379	4,425+1%
Geekbench 6 Single	554	—
Geekbench 6 Multi	1,763	—

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Memory & Platform

The Core i7-2820QM uses the PGA988 socket (PCIe 2.0), while the Phenom II X3 P840 uses S1 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Core i7-2820QM	Phenom II X3 P840
Socket	PGA988	S1
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	1600	—
Max RAM Capacity	32	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: true (Core i7-2820QM) / not specified (Phenom II X3 P840). The Core i7-2820QM includes integrated graphics (Intel HD Graphics 3000), while the Phenom II X3 P840 requires a dedicated GPU. Direct competitor: Core i7-2820QM rivals AMD A8-3510MX.