Core i5-3439Y vs Phenom X4 9850B

Core i5-3439Y vs Phenom X4 9850B Performance Spectrum

Core i5-3439Y

2 / 4

1,957

+0.6%

Pentium Extreme Edition 955

1,946

0.0%

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 i5-3439Y vs Phenom X4 9850B 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 i5-3439Y vs Phenom X4 9850B: Pros, Cons & Final Verdict

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

Core i5-3439Y

2013

Why buy it

✅+0.6% higher PassMark.
✅+50% larger total L3 cache (3 MB vs 2 MB).
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with HD Graphics 4000, while Phenom X4 9850B needs a discrete GPU.

Trade-offs

❌438.9% higher power demand at 512W vs 95W.

Phenom X4 9850B

2008

Why buy it

✅Draws 95W instead of 512W, a 417W reduction.

Trade-offs

❌Lower PassMark (1,946 vs 1,957).
❌Smaller total L3 cache (2 MB vs 3 MB).
❌No integrated graphics, while Core i5-3439Y can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core i5-3439Y better than Phenom X4 9850B?

It depends on what you want from the system. For gaming, Phenom X4 9850B is ahead with a 1.9% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core i5-3439Y pulls ahead with 0.6% better PassMark. Core i5-3439Y also has the bigger cache pool with 50% larger total L3 cache (3 MB vs 2 MB).

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

For streaming, content creation, and heavier multitasking, Core i5-3439Y is the stronger fit. You are getting 0.6% better PassMark, backed by 2 cores and 4 threads. It also has the larger cache pool with 50% larger total L3 cache (3 MB vs 2 MB).

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

Core i5-3439Y still makes the most sense overall. Core i5-3439Y 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?

Core i5-3439Y makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2013 vs 2008), 50% larger total L3 cache (3 MB vs 2 MB), and more multi-core headroom with 2 cores / 4 threads instead of 4/4. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i5-3439Y vs Phenom X4 9850B Technical Specifications

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

Core i5-3439Y

The Core i5-3439Y is manufactured by Intel. It was released in 8 January 2013 (12 years ago). It is based on the Ivy Bridge (2012−2013) architecture. It features 2 cores and 4 threads. Base frequency is 1.5 GHz, with boost up to 2.3 GHz. L3 cache: 3 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: BGA1023. Thermal design power (TDP): 13 Watt. Memory support: DDR3. Passmark benchmark score: 1,957 points. Launch price was $69.

Phenom X4 9850B

The Phenom X4 9850B is manufactured by AMD. It was released in 2009-01-01. It is based on the Agena (2007−2008) architecture. It features 4 cores and 4 threads. Max frequency: 2.5 GHz. L3 cache: 2 MB (total). L2 cache: 512 kB (per core). Built on 65 nm process technology. Socket: AM2+. Thermal design power (TDP): 95 Watt. Passmark benchmark score: 1,946 points. Launch price was $149.

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Processing Power

The Core i5-3439Y packs 2 cores / 4 threads, while the Phenom X4 9850B offers 4 cores / 4 threads — the Phenom X4 9850B has 2 more cores. Boost clocks reach 2.3 GHz on the Core i5-3439Y versus 2.5 GHz on the Phenom X4 9850B — a 8.3% clock advantage for the Phenom X4 9850B. The Core i5-3439Y uses the Ivy Bridge (2012−2013) architecture (22 nm), while the Phenom X4 9850B uses Agena (2007−2008) (65 nm). In PassMark, the Core i5-3439Y scores 1,957 against the Phenom X4 9850B's 1,946 — a 0.6% lead for the Core i5-3439Y. L3 cache: 3 MB (total) on the Core i5-3439Y vs 2 MB (total) on the Phenom X4 9850B.

Feature	Core i5-3439Y	Phenom X4 9850B
Cores / Threads	2 / 4	4 / 4+100%
Boost Clock	2.3 GHz	2.5 GHz+9%
Base Clock	1.5 GHz	—
L3 Cache	3 MB (total)+50%	2 MB (total)
L2 Cache	256K (per core)	512 kB (per core)+100%
Process	22 nm-66%	65 nm
Architecture	Ivy Bridge (2012−2013)	Agena (2007−2008)
PassMark	1,957	1,946
Geekbench 6 Single	472	—
Geekbench 6 Multi	966	—

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Memory & Platform

The Core i5-3439Y uses the BGA1023 socket (PCIe 3.0), while the Phenom X4 9850B uses AM2+ (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Core i5-3439Y	Phenom X4 9850B
Socket	BGA1023	AM2+
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	DDR3L-1600	—
Max RAM Capacity	32 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: VT-x (Core i5-3439Y) / not specified (Phenom X4 9850B). The Core i5-3439Y includes integrated graphics (HD Graphics 4000), while the Phenom X4 9850B requires a dedicated GPU. Primary use case: Core i5-3439Y targets Budget. Direct competitor: Core i5-3439Y rivals Athlon Silver 3050U.