Core i3-3120M vs Phenom II X4 900e

Core i3-3120M vs Phenom II X4 900e Performance Spectrum

Core i3-3120M

2 / 4

1,709

0.0%

1,727

+1.1%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

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 i3-3120M vs Phenom II X4 900e 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 i3-3120M vs Phenom II X4 900e: Pros, Cons & Final Verdict

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

Core i3-3120M

2012

Why buy it

✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel HD Graphics 4000, while Phenom II X4 900e needs a discrete GPU.

Trade-offs

❌Lower PassMark (1,709 vs 1,727).
❌Smaller total L3 cache (3 MB vs 6 MB).
❌687.7% higher power demand at 512W vs 65W.

Phenom II X4 900e

2009

Why buy it

✅+1.1% higher PassMark.
✅+100% larger total L3 cache (6 MB vs 3 MB).
✅Draws 65W instead of 512W, a 447W reduction.

Trade-offs

❌No integrated graphics, while Core i3-3120M can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Phenom II X4 900e better than Core i3-3120M?

It depends on what you want from the system. For gaming, Core i3-3120M is ahead with a 1.4% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Phenom II X4 900e pulls ahead with 1.1% better PassMark. Phenom II X4 900e also has the bigger cache pool with 100% larger total L3 cache (6 MB vs 3 MB).

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

For streaming, content creation, and heavier multitasking, Phenom II X4 900e is the stronger fit. You are getting 1.1% better PassMark, backed by 4 cores and 4 threads. It also has the larger cache pool with 100% larger total L3 cache (6 MB vs 3 MB).

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

Phenom II X4 900e still makes the most sense overall. Phenom II X4 900e comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 1.1% better PassMark.

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

Core i3-3120M makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2012 vs 2009). That makes it the safer long-term bet.

Core i3-3120M vs Phenom II X4 900e Technical Specifications

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

Core i3-3120M

The Core i3-3120M is manufactured by Intel. It was released in 30 September 2012 (13 years ago). It is based on the Ivy Bridge (2012−2013) architecture. It features 2 cores and 4 threads. Base frequency is 2.5 GHz, with boost up to 2.5 GHz. L3 cache: 3 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: PGA988. Thermal design power (TDP): 35 Watt. Memory support: DDR3. Passmark benchmark score: 1,709 points. Launch price was $160.

Phenom II X4 900e

The Phenom II X4 900e is manufactured by AMD. It was released in 2009-01-01. It is based on the Deneb (2009−2011) architecture. It features 4 cores and 4 threads. Base frequency is 2.4 GHz, with boost up to 2.4 GHz. L3 cache: 6 MB (total). L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 1,727 points. Launch price was $149.

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Processing Power

The Core i3-3120M packs 2 cores / 4 threads, while the Phenom II X4 900e offers 4 cores / 4 threads — the Phenom II X4 900e has 2 more cores. Boost clocks reach 2.5 GHz on the Core i3-3120M versus 2.4 GHz on the Phenom II X4 900e — a 4.1% clock advantage for the Core i3-3120M (base: 2.5 GHz vs 2.4 GHz). The Core i3-3120M uses the Ivy Bridge (2012−2013) architecture (22 nm), while the Phenom II X4 900e uses Deneb (2009−2011) (45 nm). In PassMark, the Core i3-3120M scores 1,709 against the Phenom II X4 900e's 1,727 — a 1% lead for the Phenom II X4 900e. L3 cache: 3 MB (total) on the Core i3-3120M vs 6 MB (total) on the Phenom II X4 900e.

Feature	Core i3-3120M	Phenom II X4 900e
Cores / Threads	2 / 4	4 / 4+100%
Boost Clock	2.5 GHz+4%	2.4 GHz
Base Clock	2.5 GHz+4%	2.4 GHz
L3 Cache	3 MB (total)	6 MB (total)+100%
L2 Cache	256K (per core)	512 kB (per core)+100%
Process	22 nm-51%	45 nm
Architecture	Ivy Bridge (2012−2013)	Deneb (2009−2011)
PassMark	1,709	1,727+1%
Geekbench 6 Single	440	—
Geekbench 6 Multi	930	—

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Memory & Platform

The Core i3-3120M uses the PGA988 socket (PCIe 3.0), while the Phenom II X4 900e uses AM3 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Core i3-3120M	Phenom II X4 900e
Socket	PGA988	AM3
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	DDR3-1600	—
Max RAM Capacity	32 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: VT-x, VT-d (Core i3-3120M) / not specified (Phenom II X4 900e). The Core i3-3120M includes integrated graphics (Intel HD Graphics 4000), while the Phenom II X4 900e requires a dedicated GPU. Primary use case: Core i3-3120M targets Budget Laptop. Direct competitor: Core i3-3120M rivals AMD A8-4500M.