A8-3800 vs Xeon X5355

A8-3800 vs Xeon X5355 Performance Spectrum

A8-3800

4 / 4

2,051

+0.6%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Xeon X5355

4 / 4

2,039

0.0%

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.

A8-3800 vs Xeon X5355 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.

A8-3800 vs Xeon X5355: Pros, Cons & Final Verdict

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

A8-3800

2011

Why buy it

✅Costs $4,361 less on MSRP ($130 MSRP vs $4,491 MSRP).
✅Delivers 3374.9% more PassMark for each dollar spent, at 15.8 vs 0.5 PassMark/$ ($130 MSRP vs $4,491 MSRP).
✅Draws 65W instead of 120W, a 55W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Radeon HD 6550D, while Xeon X5355 needs a discrete GPU.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Xeon X5355

2006

Why buy it

Trade-offs

❌Lower PassMark (2,039 vs 2,051).
❌Lower PassMark per dollar, at 0.5 vs 15.8 PassMark/$ ($4,491 MSRP vs $130 MSRP).
❌84.6% higher power demand at 120W vs 65W.
❌No integrated graphics, while A8-3800 can still boot and troubleshoot without a discrete GPU.
❌No boxed cooler included, unlike A8-3800.

Quick Answers

So, is A8-3800 better than Xeon X5355?

Not really, because they are built for different jobs. Xeon X5355 makes more sense for workstation-style multi-core throughput, while A8-3800 is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, A8-3800 is the better pick. According to our tests, it delivers 1.5% 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, A8-3800 is the stronger fit. You are getting 0.6% better PassMark, backed by 4 cores and 4 threads.

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

A8-3800 is the better buy right now. A8-3800 comes in $4,361 cheaper on MSRP at $130 MSRP versus $4,491 MSRP, and it still gives you a 1.5% average FPS lead across 50 shared CPU game tests in our data. It is also 3374.9% better value on MSRP (15.8 vs 0.5 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

A8-3800 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2011 vs 2006) and more multi-core headroom with 4 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.

A8-3800 vs Xeon X5355 Technical Specifications

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

A8-3800

The A8-3800 is manufactured by AMD. It was released in 2014-01-01. It is based on the Llano (2011−2012) architecture. It features 4 cores and 4 threads. Base frequency is 2.4 GHz, with boost up to 2.7 GHz. L3 cache: 0 kB. L2 cache: 1 MB (per core). Built on 32 nm process technology. Socket: FM1. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 2,051 points. Launch price was $90.

Xeon X5355

The Xeon X5355 is manufactured by Intel. It was released in 14 November 2006 (19 years ago). It is based on the Clovertown (2006−2007) architecture. It features 4 cores and 4 threads. Base frequency is 2.66 GHz, with boost up to 0.67 GHz. L3 cache: 8 MB L2 Cache. L2 cache: 4 MB (total). Built on 65 nm process technology. Socket: LGA771. Thermal design power (TDP): 120 Watt. Memory support: DDR2, DDR3 Depends on motherboard. Passmark benchmark score: 2,039 points. Launch price was $1,172.

⚡

Processing Power

Both the A8-3800 and Xeon X5355 share an identical 4-core/4-thread configuration. Boost clocks reach 2.7 GHz on the A8-3800 versus 0.67 GHz on the Xeon X5355 — a 120.5% clock advantage for the A8-3800 (base: 2.4 GHz vs 2.66 GHz). The A8-3800 uses the Llano (2011−2012) architecture (32 nm), while the Xeon X5355 uses Clovertown (2006−2007) (65 nm). In PassMark, the A8-3800 scores 2,051 against the Xeon X5355's 2,039 — a 0.6% lead for the A8-3800. L3 cache: 0 kB on the A8-3800 vs 8 MB L2 Cache on the Xeon X5355.

Feature	A8-3800	Xeon X5355
Cores / Threads	4 / 4	4 / 4
Boost Clock	2.7 GHz+303%	0.67 GHz
Base Clock	2.4 GHz	2.66 GHz+11%
L3 Cache	0 kB	8 MB L2 Cache
L2 Cache	1 MB (per core)	4 MB (total)+300%
Process	32 nm-51%	65 nm
Architecture	Llano (2011−2012)	Clovertown (2006−2007)
PassMark	2,051	2,039
Geekbench 6 Single	370	—
Geekbench 6 Multi	1,350	—

🧠

Memory & Platform

The A8-3800 uses the FM1 socket (PCIe 2.0), while the Xeon X5355 uses LGA771 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	A8-3800	Xeon X5355
Socket	FM1	LGA771
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR3-1866	—
Max RAM Capacity	32 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

🔧

Advanced Features

Virtualization: AMD-V (A8-3800) / not specified (Xeon X5355). The A8-3800 includes integrated graphics (Radeon HD 6550D), while the Xeon X5355 requires a dedicated GPU. Primary use case: A8-3800 targets Budget Desktop. Direct competitor: A8-3800 rivals Core i3-2100.

Feature	A8-3800	Xeon X5355
Integrated GPU	Yes	—
IGPU Model	Radeon HD 6550D	—
Unlocked	No	—
AVX-512	No	—
Virtualization	AMD-V	—
Target Use	Budget Desktop	—

💰

Value Analysis

At launch, the A8-3800 was priced at $130, while the Xeon X5355 came in at $4491. On launch pricing ($130 vs $4491), A8-3800 was $4361 cheaper. In terms of value on MSRP (PassMark points per dollar), the A8-3800 delivers 15.8 pts/$ vs 0.5 pts/$ for the Xeon X5355 — making the A8-3800 the 188.8% better value option.

Feature	A8-3800	Xeon X5355
MSRP	$130-97%	$4491
Performance per Dollar	15.8+3060%	0.5
Release Date	2011	2006

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