Core i3-2120T vs Phenom II X3 P820

Core i3-2120T vs Phenom II X3 P820 Performance Spectrum

Core i3-2120T

2 / 4

1,570

+0.6%

1,560

0.0%

Ryzen Threadripper PRO 5945WX

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 i3-2120T vs Phenom II X3 P820 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 i3-2120T vs Phenom II X3 P820: Pros, Cons & Final Verdict

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

Core i3-2120T

2011

Why buy it

✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with HD Graphics 2000, while Phenom II X3 P820 needs a discrete GPU.
✅Includes a boxed cooler (Yes), unlike Phenom II X3 P820.

Trade-offs

❌Launch MSRP is still $127 MSRP, while Phenom II X3 P820 mostly shows up through inconsistent older-market listings.
❌2233.3% higher power demand at 35W vs 1.5W.

Phenom II X3 P820

2010

Why buy it

✅Draws 2W instead of 35W, a 34W reduction.

Trade-offs

❌Lower PassMark (1,560 vs 1,570).
❌No integrated graphics, while Core i3-2120T can still boot and troubleshoot without a discrete GPU.
❌No boxed cooler included, unlike Core i3-2120T.

Quick Answers

So, is Core i3-2120T better than Phenom II X3 P820?

Yes. Core i3-2120T is the better all-around CPU here. It gives you a 1.6% average FPS lead across 50 shared CPU game tests in our data, 0.6% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Core i3-2120T is the better pick. According to our tests, it delivers 1.6% more average FPS across 50 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Core i3-2120T is the stronger fit. You are getting 0.6% better PassMark, backed by 2 cores and 4 threads.

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

Core i3-2120T is the better buy right now. Core i3-2120T comes in at an unclear MSRP at $127 MSRP versus unclear MSRP, and it still gives you a 1.6% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (12.4 vs 0.0 PassMark/$), 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 i3-2120T makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2011 vs 2010) and more multi-core headroom with 2 cores / 4 threads instead of 3/3. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i3-2120T vs Phenom II X3 P820 Technical Specifications

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

Core i3-2120T

The Core i3-2120T is manufactured by Intel. It was released in 4 September 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 4 threads. Base frequency is 2.6 GHz, with boost up to 2.6 GHz. L3 cache: 3 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 35 Watt. Memory support: DDR3. Passmark benchmark score: 1,570 points. Launch price was $50.

Phenom II X3 P820

The Phenom II X3 P820 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: 1.8 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: 1,560 points. Launch price was $149.

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Processing Power

The Core i3-2120T packs 2 cores / 4 threads, while the Phenom II X3 P820 offers 3 cores / 3 threads — the Phenom II X3 P820 has 1 more core. Boost clocks reach 2.6 GHz on the Core i3-2120T versus 1.8 GHz on the Phenom II X3 P820 — a 36.4% clock advantage for the Core i3-2120T. The Core i3-2120T uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Phenom II X3 P820 uses Champlain (2010−2011) (45 nm). In PassMark, the Core i3-2120T scores 1,570 against the Phenom II X3 P820's 1,560 — a 0.6% lead for the Core i3-2120T.

Feature	Core i3-2120T	Phenom II X3 P820
Cores / Threads	2 / 4	3 / 3+50%
Boost Clock	2.6 GHz+44%	1.8 GHz
Base Clock	2.6 GHz	—
L3 Cache	3 MB (total)	—
L2 Cache	256 kB (per core)	1.5 MB+500%
Process	32 nm-29%	45 nm
Architecture	Sandy Bridge (2011−2013)	Champlain (2010−2011)
PassMark	1,570	1,560
Geekbench 6 Single	403	—

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Memory & Platform

The Core i3-2120T uses the LGA1155 socket (PCIe 2.0), while the Phenom II X3 P820 uses S1 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Core i3-2120T	Phenom II X3 P820
Socket	LGA1155	S1
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR3-1333	—
Max RAM Capacity	32 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: VT-x, EPT (Core i3-2120T) / not specified (Phenom II X3 P820). The Core i3-2120T includes integrated graphics (HD Graphics 2000), while the Phenom II X3 P820 requires a dedicated GPU. Primary use case: Core i3-2120T targets Budget Desktop. Direct competitor: Core i3-2120T rivals A6-3500.