Athlon 64 FX-51 vs Atom D2500

Athlon 64 FX-51 vs Atom D2500 Performance Spectrum

Athlon 64 FX-51

1 / 1

615

+1.7%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Atom D2500

2 / 2

605

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.

Athlon 64 FX-51 vs Atom D2500 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 FX-51 vs Atom D2500: 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 FX-51

2003

Why buy it

Trade-offs

❌Lower PassMark per dollar, at 0.8 vs 14.4 PassMark/$ ($733 MSRP vs $42 MSRP).
❌790% higher power demand at 89W vs 10W.
❌No integrated graphics, while Atom D2500 can still boot and troubleshoot without a discrete GPU.

Atom D2500

2011

Why buy it

✅Costs $691 less on MSRP ($42 MSRP vs $733 MSRP).
✅Delivers 1616.9% more PassMark for each dollar spent, at 14.4 vs 0.8 PassMark/$ ($42 MSRP vs $733 MSRP).
✅Draws 10W instead of 89W, a 79W reduction.
✅100+% more PCIe lanes (4 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel GMA 3600, while Athlon 64 FX-51 needs a discrete GPU.

Trade-offs

❌Lower PassMark (605 vs 615).

Quick Answers

So, is Athlon 64 FX-51 better than Atom D2500?

Yes. Athlon 64 FX-51 is the better all-around CPU here. It gives you a 0.3% average FPS lead across 50 shared CPU game tests in our data and 1.7% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Athlon 64 FX-51 is the better pick. According to our tests, it delivers 0.3% 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, Athlon 64 FX-51 is the stronger fit. You are getting 1.7% better PassMark, backed by 1 cores and 1 threads.

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

Athlon 64 FX-51 is the easy recommendation for a fresh desktop build. Athlon 64 FX-51 comes in 1645.2% more expensive on MSRP at $733 MSRP versus $42 MSRP, and it still gives you a 0.3% average FPS lead across 50 shared CPU game tests in our data. Atom D2500 only looks good on raw value math because it is a cheap legacy laptop chip, not because it is a real desktop gaming recommendation. It simply does not keep up in modern games, especially when the gap is already 0.3% in the shared gaming data.

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

Atom D2500 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2011 vs 2003). That makes it the safer long-term bet.

Athlon 64 FX-51 vs Atom D2500 Technical Specifications

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

Athlon 64 FX-51

The Athlon 64 FX-51 is manufactured by AMD. It was released in 2009-01-01. It is based on the SledgeHammer (2003−2005) architecture. It features 1 cores and 1 threads. Max frequency: 2.2 GHz. L3 cache: 0 kB. L2 cache: 1 MB. Built on 130 nm process technology. Socket: 940. Thermal design power (TDP): 89 Watt. Passmark benchmark score: 615 points. Launch price was $149.

Atom D2500

The Atom D2500 is manufactured by Intel. It was released in 1 November 2011 (14 years ago). It is based on the Cedarview (2011−2012) architecture. It features 2 cores and 2 threads. Base frequency is 1.86 GHz, with boost up to 1.87 GHz. L3 cache: 0 kB. L2 cache: 512K (per core). Built on 32 nm process technology. Socket: FCBGA559. Thermal design power (TDP): 10 Watt. Memory support: DDR3. Passmark benchmark score: 605 points. Launch price was $69.

⚡

Processing Power

The Athlon 64 FX-51 packs 1 cores / 1 threads, while the Atom D2500 offers 2 cores / 2 threads — the Atom D2500 has 1 more core. Boost clocks reach 2.2 GHz on the Athlon 64 FX-51 versus 1.87 GHz on the Atom D2500 — a 16.2% clock advantage for the Athlon 64 FX-51. The Athlon 64 FX-51 uses the SledgeHammer (2003−2005) architecture (130 nm), while the Atom D2500 uses Cedarview (2011−2012) (32 nm). In PassMark, the Athlon 64 FX-51 scores 615 against the Atom D2500's 605 — a 1.6% lead for the Athlon 64 FX-51. Both processors carry 0 kB of L3 cache.

Feature	Athlon 64 FX-51	Atom D2500
Cores / Threads	1 / 1	2 / 2+100%
Boost Clock	2.2 GHz+18%	1.87 GHz
Base Clock	—	1.86 GHz
L3 Cache	0 kB	0 kB
L2 Cache	1 MB	512K (per core)+51100%
Process	130 nm	32 nm-75%
Architecture	SledgeHammer (2003−2005)	Cedarview (2011−2012)
PassMark	615+2%	605

🧠

Memory & Platform

The Athlon 64 FX-51 uses the 940 socket (PCIe 1.1), while the Atom D2500 uses FCBGA559 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR-400 on the Athlon 64 FX-51 versus DDR3-1066 on the Atom D2500 — the Atom D2500 supports -366.5% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 4 GB of RAM. Memory channels: 2 (Athlon 64 FX-51) vs 1 (Atom D2500). PCIe lanes: 0 (Athlon 64 FX-51) vs 4 (Atom D2500) — the Atom D2500 offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD 940 (Athlon 64 FX-51) and Intel FCBGA559 (Atom D2500).

Feature	Athlon 64 FX-51	Atom D2500
Socket	940	FCBGA559
PCIe Generation	PCIe 1.1	PCIe 2.0+82%
Max RAM Speed	DDR-400	DDR3-1066
Max RAM Capacity	4 GB	4 GB
RAM Channels	2+100%	1
ECC Support	Yes	No
PCIe Lanes	0	4

🔧

Advanced Features

The Atom D2500 includes integrated graphics (Intel GMA 3600), while the Athlon 64 FX-51 requires a dedicated GPU.

Feature	Athlon 64 FX-51	Atom D2500
Integrated GPU	No	Yes
IGPU Model	—	Intel GMA 3600

💰

Value Analysis

At launch, the Athlon 64 FX-51 was priced at $733, while the Atom D2500 came in at $42. On launch pricing ($733 vs $42), Atom D2500 was $691 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon 64 FX-51 delivers 0.8 pts/$ vs 14.4 pts/$ for the Atom D2500 — making the Atom D2500 the 178% better value option.

Feature	Athlon 64 FX-51	Atom D2500
MSRP	$733	$42-94%
Performance per Dollar	0.8	14.4+1700%
Release Date	2003	2011

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