Atom x7809C vs Xeon E5-4655 v3

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.

Atom x7809C vs Xeon E5-4655 v3 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.

Atom x7809C vs Xeon E5-4655 v3: Pros, Cons & Final Verdict

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

Atom x7809C

2024

Why buy it

✅+0.3% higher PassMark.
✅Draws 25W instead of 135W, a 110W reduction.
✅Newer platform on FCBGA1264 with DDR5 support instead of LGA2011 and DDR4.
✅100+% more PCIe lanes (9 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E5-4655 v3 across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (6 MB vs 30 MB).
❌Less compelling for workstation-style loads than Xeon E5-4655 v3, which brings 6 cores / 12 threads.

Xeon E5-4655 v3

2015

Why buy it

✅Better for gaming: +8.4% higher average FPS across 50 shared CPU benchmark tests.
✅+400% larger total L3 cache (30 MB vs 6 MB).
✅Better for workstations and heavier parallel workloads: 6 cores / 12 threads.

Trade-offs

❌Lower PassMark (9,377 vs 9,409).
❌Launch MSRP is still $623 MSRP, while Atom x7809C mostly shows up through inconsistent older-market listings.
❌440% higher power demand at 135W vs 25W.
❌Older platform position on LGA2011 with DDR4, while Atom x7809C moves to FCBGA1264 and DDR5.

Quick Answers

So, is Atom x7809C better than Xeon E5-4655 v3?

Not really, because they are built for different jobs. Xeon E5-4655 v3 makes more sense for workstation-style multi-core throughput, while Atom x7809C is the more practical desktop choice for gaming, platform cost, and everyday use.

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

For streaming, content creation, and heavier multitasking, Atom x7809C is the stronger fit. You are getting 0.3% better PassMark, backed by 8 cores and 8 threads.

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

Atom x7809C is still the faster CPU overall, but Xeon E5-4655 v3 is easier to justify if budget matters more than peak performance. Atom x7809C comes in at an unclear MSRP at unclear MSRP versus $623 MSRP, and it still gives you 0.3% better PassMark. The compromise is that Xeon E5-4655 v3 is still the better pure gaming CPU with a 8.4% average FPS lead across 50 shared CPU game tests in our data. Xeon E5-4655 v3 is also 100.0% better value on MSRP (15.1 vs 0.0 PassMark/$), which is why it can still make sense for tighter-budget builds on paper.

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

Atom x7809C makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2015), a healthier platform with FCBGA1264 and DDR5 instead of LGA2011, and more multi-core headroom with 8 cores / 8 threads instead of 6/12. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Atom x7809C vs Xeon E5-4655 v3 Technical Specifications

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

Atom x7809C

The Atom x7809C is manufactured by Intel. It was released in 8 April 2024 (1 year ago). It is based on the Amston Lake (2024−2025) architecture. It features 8 cores and 8 threads. Base frequency is 2 GHz, with boost up to 3.6 GHz. L3 cache: 6 MB (total). L2 cache: 2 MB (per module). Built on 10 nm process technology. Socket: FCBGA1264. Thermal design power (TDP): 25 Watt. Memory support: DDR4, DDR5. Passmark benchmark score: 9,409 points. Launch price was $117.

Xeon E5-4655 v3

The Xeon E5-4655 v3 is manufactured by Intel. It was released in 2015-01-01. It is based on the Haswell-EP (2014−2015) architecture. It features 6 cores and 12 threads. Base frequency is 2.9 GHz, with boost up to 3.2 GHz. L3 cache: 30 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA2011. Thermal design power (TDP): 135 Watt. Memory support: DDR4. Passmark benchmark score: 9,377 points. Launch price was $800.

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Processing Power

The Atom x7809C packs 8 cores / 8 threads, while the Xeon E5-4655 v3 offers 6 cores / 12 threads — the Atom x7809C has 2 more cores. Boost clocks reach 3.6 GHz on the Atom x7809C versus 3.2 GHz on the Xeon E5-4655 v3 — a 11.8% clock advantage for the Atom x7809C (base: 2 GHz vs 2.9 GHz). The Atom x7809C uses the Amston Lake (2024−2025) architecture (10 nm), while the Xeon E5-4655 v3 uses Haswell-EP (2014−2015) (22 nm). In PassMark, the Atom x7809C scores 9,409 against the Xeon E5-4655 v3's 9,377 — a 0.3% lead for the Atom x7809C. L3 cache: 6 MB (total) on the Atom x7809C vs 30 MB (total) on the Xeon E5-4655 v3.

Feature	Atom x7809C	Xeon E5-4655 v3
Cores / Threads	8 / 8+33%	6 / 12
Boost Clock	3.6 GHz+12%	3.2 GHz
Base Clock	2 GHz	2.9 GHz+45%
L3 Cache	6 MB (total)	30 MB (total)+400%
L2 Cache	2 MB (per module)	256K (per core)+12700%
Process	10 nm-55%	22 nm
Architecture	Amston Lake (2024−2025)	Haswell-EP (2014−2015)
PassMark	9,409	9,377
Geekbench 6 Single	1,102	—
Geekbench 6 Multi	4,657	—

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Memory & Platform

The Atom x7809C uses the FCBGA1264 socket (PCIe 4.0), while the Xeon E5-4655 v3 uses LGA2011 (PCIe 5.0) — making them incompatible on the same motherboard.

Feature	Atom x7809C	Xeon E5-4655 v3
Socket	FCBGA1264	LGA2011
PCIe Generation	PCIe 4.0	PCIe 5.0+25%
Max RAM Speed	DDR5-4800	—
Max RAM Capacity	32 GB	—
RAM Channels	1	—
ECC Support	Yes	—
PCIe Lanes	9	—