Athlon 64 FX-51 vs Pentium D 830

Athlon 64 FX-51 vs Pentium D 830 Performance Spectrum

Athlon 64 FX-51

1 / 1

615

0.0%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Pentium D 830

2 / 2

618

+0.5%

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 Pentium D 830 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 Pentium D 830: 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

✅Draws 89W instead of 130W, a 41W reduction.

Trade-offs

❌Lower PassMark (615 vs 618).
❌Lower PassMark per dollar, at 0.8 vs 2.0 PassMark/$ ($733 MSRP vs $316 MSRP).
❌No boxed cooler included, unlike Pentium D 830.

Pentium D 830

2005

Why buy it

✅Costs $417 less on MSRP ($316 MSRP vs $733 MSRP).
✅Delivers 133.1% more PassMark for each dollar spent, at 2.0 vs 0.8 PassMark/$ ($316 MSRP vs $733 MSRP).
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Stock), unlike Athlon 64 FX-51.

Trade-offs

❌46.1% higher power demand at 130W vs 89W.

Quick Answers

So, is Pentium D 830 better than Athlon 64 FX-51?

Yes. Pentium D 830 is the better all-around CPU here. It gives you a 0.1% average FPS lead across 48 shared CPU game tests in our data, 0.5% 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, Pentium D 830 is the better pick. According to our tests, it delivers 0.1% more average FPS across 48 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Pentium D 830 is the stronger fit. You are getting 0.5% better PassMark, backed by 2 cores and 2 threads.

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

Pentium D 830 is the better buy right now. Pentium D 830 comes in $417 cheaper on MSRP at $316 MSRP versus $733 MSRP, and it still gives you a 0.1% average FPS lead across 48 shared CPU game tests in our data. It is also 133.1% better value on MSRP (2.0 vs 0.8 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Pentium D 830 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2005 vs 2003) and more multi-core headroom with 2 cores / 2 threads instead of 1/1. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Athlon 64 FX-51 vs Pentium D 830 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.

Pentium D 830

The Pentium D 830 is manufactured by Intel. It was released in 2007-01-01. It is based on the NetBurst (2000−2006) architecture. It features 2 cores and 2 threads. Base frequency is 3 GHz, with boost up to 3 GHz. L3 cache: 0 kB. L2 cache: 2 MB. Built on 90 nm process technology. Socket: LGA775. Thermal design power (TDP): 130 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 618 points. Launch price was $69.

⚡

Processing Power

The Athlon 64 FX-51 packs 1 cores / 1 threads, while the Pentium D 830 offers 2 cores / 2 threads — the Pentium D 830 has 1 more core. Boost clocks reach 2.2 GHz on the Athlon 64 FX-51 versus 3 GHz on the Pentium D 830 — a 30.8% clock advantage for the Pentium D 830. The Athlon 64 FX-51 uses the SledgeHammer (2003−2005) architecture (130 nm), while the Pentium D 830 uses NetBurst (2000−2006) (90 nm). In PassMark, the Athlon 64 FX-51 scores 615 against the Pentium D 830's 618 — a 0.5% lead for the Pentium D 830. Both processors carry 0 kB of L3 cache.

Feature	Athlon 64 FX-51	Pentium D 830
Cores / Threads	1 / 1	2 / 2+100%
Boost Clock	2.2 GHz	3 GHz+36%
Base Clock	—	3 GHz
L3 Cache	0 kB	0 kB
L2 Cache	1 MB	2 MB+100%
Process	130 nm	90 nm-31%
Architecture	SledgeHammer (2003−2005)	NetBurst (2000−2006)
PassMark	615	618
Geekbench 6 Single	—	151
Geekbench 6 Multi	—	341

🧠

Memory & Platform

The Athlon 64 FX-51 uses the 940 socket (PCIe 1.1), while the Pentium D 830 uses LGA775 (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR-400 on the Athlon 64 FX-51 versus DDR2-667 on the Pentium D 830 — the Pentium D 830 supports -266.8% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 4 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Athlon 64 FX-51) vs 16 (Pentium D 830) — the Pentium D 830 offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD 940 (Athlon 64 FX-51) and 945,955,975 (Pentium D 830).

Feature	Athlon 64 FX-51	Pentium D 830
Socket	940	LGA775
PCIe Generation	PCIe 1.1	PCIe 1.1
Max RAM Speed	DDR-400	DDR2-667
Max RAM Capacity	4 GB	4 GB
RAM Channels	2	2
ECC Support	Yes	No
PCIe Lanes	0	16

🔧

Advanced Features

Virtualization: not specified (Athlon 64 FX-51) / None (Pentium D 830). Primary use case: Pentium D 830 targets Legacy Desktop.

Feature	Athlon 64 FX-51	Pentium D 830
Integrated GPU	No	No
IGPU Model	—	None
Unlocked	—	No
AVX-512	—	No
Virtualization	—	None
Target Use	—	Legacy Desktop

💰

Value Analysis

At launch, the Athlon 64 FX-51 was priced at $733, while the Pentium D 830 came in at $316. On launch pricing ($733 vs $316), Pentium D 830 was $417 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon 64 FX-51 delivers 0.8 pts/$ vs 2.0 pts/$ for the Pentium D 830 — making the Pentium D 830 the 79.9% better value option.

Feature	Athlon 64 FX-51	Pentium D 830
MSRP	$733	$316-57%
Performance per Dollar	0.8	2.0+150%
Release Date	2003	2005

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