Athlon II X4 651 vs Athlon X4 950

Athlon II X4 651 vs Athlon X4 950 Performance Spectrum

Athlon II X4 651

4 / 4

3,584

+0.2%

Ryzen Threadripper 3990X

Athlon X4 950

4 / 4

3,576

0.0%

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.

Athlon II X4 651 vs Athlon X4 950 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.

Athlon II X4 651 vs Athlon X4 950: Pros, Cons & Final Verdict

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

Athlon II X4 651

2011

Why buy it

✅+0.2% higher PassMark.
✅100% more PCIe lanes (16 vs 8) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark per dollar, at 39.0 vs 61.7 PassMark/$ ($92 MSRP vs $58 MSRP).
❌53.8% higher power demand at 100W vs 65W.
❌No boxed cooler included, unlike Athlon X4 950.

Athlon X4 950

2017

Why buy it

✅Costs $34 less on MSRP ($58 MSRP vs $92 MSRP).
✅Delivers 58.3% more PassMark for each dollar spent, at 61.7 vs 39.0 PassMark/$ ($58 MSRP vs $92 MSRP).
✅Draws 65W instead of 100W, a 35W reduction.
✅Includes a boxed cooler (Yes), unlike Athlon II X4 651.

Trade-offs

❌Lower PassMark (3,576 vs 3,584).

Quick Answers

So, is Athlon X4 950 better than Athlon II X4 651?

It depends on what you want from the system. For gaming, Athlon X4 950 is ahead with a 2.7% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Athlon II X4 651 pulls ahead with 0.2% better PassMark.

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

For streaming, content creation, and heavier multitasking, Athlon II X4 651 is the stronger fit. You are getting 0.2% better PassMark, backed by 4 cores and 4 threads.

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

Athlon X4 950 is the better buy right now. Athlon X4 950 comes in $34 cheaper on MSRP at $58 MSRP versus $92 MSRP, and it still gives you a 2.7% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Athlon II X4 651 is still stronger for heavier multi-core work with 0.2% better PassMark. It is also 58.3% better value on MSRP (61.7 vs 39.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Athlon X4 950 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2017 vs 2011). That makes it the safer long-term bet.

Athlon II X4 651 vs Athlon X4 950 Technical Specifications

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

Athlon II X4 651

The Athlon II X4 651 is manufactured by AMD. It was released in 2009-01-01. It is based on the Llano (2011−2012) architecture. It features 4 cores and 4 threads. Base frequency is 3 GHz, with boost up to 3 GHz. L3 cache: 0 kB. L2 cache: 1 MB (per core). Built on 32 nm process technology. Socket: FM1. Thermal design power (TDP): 100 Watt. Memory support: DDR3. Passmark benchmark score: 3,584 points. Launch price was $149.

Athlon X4 950

The Athlon X4 950 is manufactured by AMD. It was released in 27 July 2017 (8 years ago). It is based on the Bristol Ridge (2016−2019) architecture. It features 4 cores and 4 threads. Base frequency is 3.5 GHz, with boost up to 3.8 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 28 nm process technology. Socket: AM4. Thermal design power (TDP): 65 Watt. Memory support: DDR4 Dual-channel. Passmark benchmark score: 3,576 points. Launch price was $60.

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Processing Power

Both the Athlon II X4 651 and Athlon X4 950 share an identical 4-core/4-thread configuration. Boost clocks reach 3 GHz on the Athlon II X4 651 versus 3.8 GHz on the Athlon X4 950 — a 23.5% clock advantage for the Athlon X4 950 (base: 3 GHz vs 3.5 GHz). The Athlon II X4 651 uses the Llano (2011−2012) architecture (32 nm), while the Athlon X4 950 uses Bristol Ridge (2016−2019) (28 nm). In PassMark, the Athlon II X4 651 scores 3,584 against the Athlon X4 950's 3,576 — a 0.2% lead for the Athlon II X4 651. Both processors carry 0 kB of L3 cache.

Feature	Athlon II X4 651	Athlon X4 950
Cores / Threads	4 / 4	4 / 4
Boost Clock	3 GHz	3.8 GHz+27%
Base Clock	3 GHz	3.5 GHz+17%
L3 Cache	0 kB	0 kB
L2 Cache	1 MB (per core)+100%	512 kB (per core)
Process	32 nm	28 nm-13%
Architecture	Llano (2011−2012)	Bristol Ridge (2016−2019)
PassMark	3,584	3,576
Geekbench 6 Single	—	656
Geekbench 6 Multi	—	1,637

🧠

Memory & Platform

The Athlon II X4 651 uses the FM1 socket (PCIe 2.0), while the Athlon X4 950 uses AM4 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1866 on the Athlon II X4 651 versus DDR4-2400 on the Athlon X4 950 — the Athlon X4 950 supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Athlon X4 950 supports up to 64 GB of RAM compared to 16 GB — 300% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Athlon II X4 651) vs 8 (Athlon X4 950) — the Athlon II X4 651 offers 8 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD FM1 (Athlon II X4 651) and Socket AM4 (Athlon X4 950).

Feature	Athlon II X4 651	Athlon X4 950
Socket	FM1	AM4
PCIe Generation	PCIe 2.0	PCIe 3.0+50%
Max RAM Speed	DDR3-1866	DDR4-2400+29%
Max RAM Capacity	16 GB	64 GB+300%
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	16+100%	8

🔧

Advanced Features

Virtualization: not specified (Athlon II X4 651) / AMD-V (Athlon X4 950).

Feature	Athlon II X4 651	Athlon X4 950
Integrated GPU	No	No
Unlocked	—	No
AVX-512	—	No
Virtualization	—	AMD-V

💰

Value Analysis

At launch, the Athlon II X4 651 was priced at $92, while the Athlon X4 950 came in at $58. On launch pricing ($92 vs $58), Athlon X4 950 was $34 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon II X4 651 delivers 39.0 pts/$ vs 61.7 pts/$ for the Athlon X4 950 — making the Athlon X4 950 the 45.1% better value option.

Feature	Athlon II X4 651	Athlon X4 950
MSRP	$92	$58-37%
Performance per Dollar	39.0	61.7+58%
Release Date	2011	2017

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