Athlon 64 X2 5800+ vs Xeon L5408

Athlon 64 X2 5800+ vs Xeon L5408 Performance Spectrum

Athlon 64 X2 5800+

2 / 2

1,745

0.0%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Xeon L5408

4 / 4

1,769

+1.4%

Pentium Dual-Core E2200

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 64 X2 5800+ vs Xeon L5408 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 64 X2 5800+ vs Xeon L5408: Pros, Cons & Final Verdict

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

Athlon 64 X2 5800+

2008

Why buy it

Trade-offs

❌Lower PassMark (1,745 vs 1,769).
❌Less compelling for workstation-style loads than Xeon L5408, which brings 4 cores / 4 threads.
❌Launch MSRP is still $230 MSRP, while Xeon L5408 mostly shows up through inconsistent older-market listings.
❌122.5% higher power demand at 89W vs 40W.

Xeon L5408

2008

Why buy it

✅+1.4% higher PassMark.
✅Better for workstations and heavier parallel workloads: 4 cores / 4 threads.
✅Draws 40W instead of 89W, a 49W reduction.

Trade-offs

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

Quick Answers

So, is Xeon L5408 better than Athlon 64 X2 5800+?

Not really, because they are built for different jobs. Xeon L5408 makes more sense for workstation-style multi-core throughput, while Athlon 64 X2 5800+ 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, Xeon L5408 is the stronger fit. You are getting 1.4% better PassMark, backed by 4 cores and 4 threads.

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

Xeon L5408 is still the much better call for a fresh build. Xeon L5408 comes in at an unclear MSRP at unclear MSRP versus $230 MSRP, and it still gives you 1.4% better PassMark. Athlon 64 X2 5800+ only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2008 platform. Even with 100.0% better value on paper (7.6 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on AM2.

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

Xeon L5408 makes more sense long term for 2026 and beyond. You are getting more multi-core headroom with 4 cores / 4 threads instead of 2/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Athlon 64 X2 5800+ vs Xeon L5408 Technical Specifications

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

Athlon 64 X2 5800+

The Athlon 64 X2 5800+ is manufactured by AMD. It was released in 2009-01-01. It is based on the Brisbane (2007−2008) architecture. It features 2 cores and 2 threads. Max frequency: 3 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 65 nm process technology. Socket: AM2. Thermal design power (TDP): 89 Watt. Passmark benchmark score: 1,745 points. Launch price was $149.

Xeon L5408

The Xeon L5408 is manufactured by Intel. It was released in 2015-01-01. It is based on the Harpertown (2007−2008) architecture. It features 4 cores and 4 threads. Base frequency is 2.133 GHz, with boost up to 0.13 GHz. L2 cache: 6 MB (total). Built on 45 nm process technology. Socket: LGA771. Thermal design power (TDP): 40 Watt. Memory support: DDR2, DDR3 Depends on motherboard. Passmark benchmark score: 1,769 points. Launch price was $800.

⚡

Processing Power

The Athlon 64 X2 5800+ packs 2 cores / 2 threads, while the Xeon L5408 offers 4 cores / 4 threads — the Xeon L5408 has 2 more cores. Boost clocks reach 3 GHz on the Athlon 64 X2 5800+ versus 0.13 GHz on the Xeon L5408 — a 183.4% clock advantage for the Athlon 64 X2 5800+. The Athlon 64 X2 5800+ uses the Brisbane (2007−2008) architecture (65 nm), while the Xeon L5408 uses Harpertown (2007−2008) (45 nm). In PassMark, the Athlon 64 X2 5800+ scores 1,745 against the Xeon L5408's 1,769 — a 1.4% lead for the Xeon L5408.

Feature	Athlon 64 X2 5800+	Xeon L5408
Cores / Threads	2 / 2	4 / 4+100%
Boost Clock	3 GHz+2208%	0.13 GHz
Base Clock	—	2.133 GHz
L3 Cache	0 kB	—
L2 Cache	512 kB	6 MB (total)+1100%
Process	65 nm	45 nm-31%
Architecture	Brisbane (2007−2008)	Harpertown (2007−2008)
PassMark	1,745	1,769+1%

🧠

Memory & Platform

The Athlon 64 X2 5800+ uses the AM2 socket (PCIe 2.0), while the Xeon L5408 uses LGA771 (PCIe 2.0) — making them incompatible on the same motherboard.