Phenom II X3 B77 vs Ryzen 7 3700X

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.

Phenom II X3 B77 vs Ryzen 7 3700X 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.

Phenom II X3 B77 vs Ryzen 7 3700X: Pros, Cons & Final Verdict

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

Phenom II X3 B77

2010

Why buy it

✅Costs $48 less on MSRP ($281 MSRP vs $329 MSRP).

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 3700X across 50 shared CPU benchmark tests.
❌Lower PassMark (1,844 vs 22,430).
❌Smaller total L3 cache (6 MB vs 32 MB).
❌Lower PassMark per dollar, at 6.6 vs 68.2 PassMark/$ ($281 MSRP vs $329 MSRP).
❌46.2% higher power demand at 95W vs 65W.

Ryzen 7 3700X

2019

Why buy it

✅Better for gaming: +476.6% higher average FPS across 50 shared CPU benchmark tests.
✅+433.3% larger total L3 cache (32 MB vs 6 MB).
✅Delivers 938.9% more PassMark for each dollar spent, at 68.2 vs 6.6 PassMark/$ ($329 MSRP vs $281 MSRP).
✅Draws 65W instead of 95W, a 30W reduction.
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌
17.1% HIGHER MSRP
$329 MSRPvs$281 MSRP

Quick Answers

So, is Ryzen 7 3700X better than Phenom II X3 B77?

Yes. Ryzen 7 3700X is the better all-around CPU here. It gives you a 476.6% average FPS lead across 50 shared CPU game tests in our data, 1116.4% 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, Ryzen 7 3700X is the better pick. According to our tests, it delivers 476.6% 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, Ryzen 7 3700X is the stronger fit. You are getting 1116.4% better PassMark, backed by 8 cores and 16 threads. It also has the larger cache pool with 433.3% larger total L3 cache (32 MB vs 6 MB).

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

Ryzen 7 3700X is the better buy right now. Ryzen 7 3700X comes in 17.1% more expensive on MSRP at $329 MSRP versus $281 MSRP, and it still gives you a 476.6% average FPS lead across 50 shared CPU game tests in our data. It is also 938.9% better value on MSRP (68.2 vs 6.6 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Ryzen 7 3700X makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2019 vs 2010), 433.3% larger total L3 cache (32 MB vs 6 MB), and more multi-core headroom with 8 cores / 16 threads instead of 3/3. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Phenom II X3 B77 vs Ryzen 7 3700X Technical Specifications

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

Phenom II X3 B77

The Phenom II X3 B77 is manufactured by AMD. It was released in 2009-01-01. It is based on the Heka (2009−2010) architecture. It features 3 cores and 3 threads. Base frequency is 3.2 GHz, with boost up to 3.2 GHz. L3 cache: 6 MB (total). L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 1,844 points. Launch price was $149.

Ryzen 7 3700X

The Ryzen 7 3700X is manufactured by AMD. It was released in 7 July 2019 (6 years ago). It is based on the Matisse (Zen 2) (2019−2020) architecture. It features 8 cores and 16 threads. Base frequency is 3.6 GHz, with boost up to 4.4 GHz. L3 cache: 32 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 65 Watt. Memory support: DDR4 Dual-channel. Passmark benchmark score: 22,430 points. Launch price was $329.

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Processing Power

The Phenom II X3 B77 packs 3 cores / 3 threads, while the Ryzen 7 3700X offers 8 cores / 16 threads — the Ryzen 7 3700X has 5 more cores. Boost clocks reach 3.2 GHz on the Phenom II X3 B77 versus 4.4 GHz on the Ryzen 7 3700X — a 31.6% clock advantage for the Ryzen 7 3700X (base: 3.2 GHz vs 3.6 GHz). The Phenom II X3 B77 uses the Heka (2009−2010) architecture (45 nm), while the Ryzen 7 3700X uses Matisse (Zen 2) (2019−2020) (7 nm, 12 nm). In PassMark, the Phenom II X3 B77 scores 1,844 against the Ryzen 7 3700X's 22,430 — a 169.6% lead for the Ryzen 7 3700X. L3 cache: 6 MB (total) on the Phenom II X3 B77 vs 32 MB on the Ryzen 7 3700X.

Feature	Phenom II X3 B77	Ryzen 7 3700X
Cores / Threads	3 / 3	8 / 16+167%
Boost Clock	3.2 GHz	4.4 GHz+38%
Base Clock	3.2 GHz	3.6 GHz+12%
L3 Cache	6 MB (total)	32 MB+433%
L2 Cache	512 kB (per core)	512K (per core)
Process	45 nm	7 nm, 12 nm-84%
Architecture	Heka (2009−2010)	Matisse (Zen 2) (2019−2020)
PassMark	1,844	22,430+1116%

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Memory & Platform

The Phenom II X3 B77 uses the AM3 socket (PCIe 2.0), while the Ryzen 7 3700X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Phenom II X3 B77 versus DDR4-3200 on the Ryzen 7 3700X — the Ryzen 7 3700X supports 140.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 7 3700X supports up to 128 GB of RAM compared to 32 GB — 300% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Phenom II X3 B77) vs 24 (Ryzen 7 3700X) — the Ryzen 7 3700X offers 24 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AM3 (Phenom II X3 B77) and AMD 500 series,AMD 400 series,AMD 300 series (Ryzen 7 3700X).

Feature	Phenom II X3 B77	Ryzen 7 3700X
Socket	AM3	AM4
PCIe Generation	PCIe 2.0	PCIe 4.0+100%
Max RAM Speed	DDR3-1333	DDR4-3200+140%
Max RAM Capacity	32 GB	128 GB+300%
RAM Channels	2	2
ECC Support	Yes	Yes
PCIe Lanes	0	24

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Value Analysis

At launch, the Phenom II X3 B77 was priced at $281, while the Ryzen 7 3700X came in at $329. On launch pricing ($281 vs $329), Phenom II X3 B77 was $48 cheaper. In terms of value on MSRP (PassMark points per dollar), the Phenom II X3 B77 delivers 6.6 pts/$ vs 68.2 pts/$ for the Ryzen 7 3700X — making the Ryzen 7 3700X the 164.9% better value option.

Feature	Phenom II X3 B77	Ryzen 7 3700X
MSRP	$281-15%	$329
Performance per Dollar	6.6	68.2+933%
Release Date	2010	2019

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