Core i5-2405S vs Ryzen 7 7800X3D

Intel

Core i5-2405S

4 Cores4 Thrd65 WWMax: 3.3 GHz2011
Similar parts
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VS
AMD

Ryzen 7 7800X3D

8 Cores16 Thrd120 WWMax: 5 GHz2023
Ryzen family
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Core i5-2405S vs Ryzen 7 7800X3D Performance Spectrum

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.

Core i5-2405S vs Ryzen 7 7800X3D 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.

Core i5-2405S vs Ryzen 7 7800X3D: Pros, Cons & Final Verdict

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

Core i5-2405S

2011

Why buy it

  • Costs $140 less on MSRP ($309 MSRP vs $449 MSRP).
  • Draws 65W instead of 120W, a 55W reduction.
  • Includes a boxed cooler (Yes), unlike Ryzen 7 7800X3D.

Trade-offs

  • Worse for gaming: lower average FPS than Ryzen 7 7800X3D across 25 shared CPU benchmark tests.
  • Lower Geekbench multi-core (1,480 vs 15,000).
  • Lower PassMark per dollar, at 11.0 vs 76.4 PassMark/$ ($309 MSRP vs $449 MSRP).
  • Older platform position on LGA1155, while Ryzen 7 7800X3D moves to AM5 and DDR5.

Ryzen 7 7800X3D

2023

Why buy it

  • Better for gaming: +332.1% higher average FPS across 25 shared CPU benchmark tests.
  • Delivers 594.7% more PassMark for each dollar spent, at 76.4 vs 11.0 PassMark/$ ($449 MSRP vs $309 MSRP).
  • Newer platform on AM5 with DDR5 support instead of LGA1155 and older memory support.
  • 75% more PCIe lanes (28 vs 16) for storage and expansion-heavy builds.

Trade-offs

  • 45.3% HIGHER MSRP
    $449 MSRPvs$309 MSRP
  • 84.6% higher power demand at 120W vs 65W.
  • No boxed cooler included, unlike Core i5-2405S.

Quick Answers

So, is Ryzen 7 7800X3D better than Core i5-2405S?
Yes. Ryzen 7 7800X3D is the better all-around CPU here. It gives you a 332.1% average FPS lead across 25 shared CPU game tests in our data, 913.5% better Geekbench multi-core, 909.5% higher 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, Ryzen 7 7800X3D is the better pick. According to our tests, it delivers 332.1% more average FPS across 25 shared CPU game tests. It also has a clear cache advantage at 96 MB versus 6 MB.
Which one is better for streaming, content creation, and heavy multitasking?
For streaming, content creation, and heavier multitasking, Ryzen 7 7800X3D is the stronger fit. You are getting 913.5% better Geekbench multi-core, backed by 8 cores and 16 threads. It also has the larger cache pool with 1500% larger total L3 cache (96 MB vs 6 MB).
Which one is the smarter buy today, not just the cheaper CPU?
Ryzen 7 7800X3D is the better buy right now. Ryzen 7 7800X3D comes in 45.3% more expensive on MSRP at $449 MSRP versus $309 MSRP, and it still gives you a 332.1% average FPS lead across 25 shared CPU game tests in our data. It is also 594.7% better value on MSRP (76.4 vs 11.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.
Which one is more future-proof for 2026 and beyond?
Ryzen 7 7800X3D makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2011), a healthier platform with AM5 and DDR5 instead of LGA1155, 3D V-Cache and a much larger 96 MB L3 cache instead of 6 MB, and more multi-core headroom with 8 cores / 16 threads instead of 4/4. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i5-2405S vs Ryzen 7 7800X3D Technical Specifications

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

Intel

Core i5-2405S

The Core i5-2405S is manufactured by Intel. It was released in 22 May 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 4 cores and 4 threads. Base frequency is 2.5 GHz, with boost up to 3.3 GHz. L3 cache: 6 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 3,397 points. Launch price was $472.

AMD

Ryzen 7 7800X3D

The Ryzen 7 7800X3D is manufactured by AMD. It was released in 4 January 2023 (2 years ago). It is based on the Raphael (Zen4) (2022−2023) architecture. It features 8 cores and 16 threads. Base frequency is 4.4 GHz, with boost up to 5 GHz. L3 cache: 96 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5-5200. Passmark benchmark score: 34,293 points. Launch price was $449.

Processing Power

The Core i5-2405S packs 4 cores / 4 threads, while the Ryzen 7 7800X3D offers 8 cores / 16 threads — the Ryzen 7 7800X3D has 4 more cores. Boost clocks reach 3.3 GHz on the Core i5-2405S versus 5 GHz on the Ryzen 7 7800X3D — a 41% clock advantage for the Ryzen 7 7800X3D (base: 2.5 GHz vs 4.4 GHz). The Core i5-2405S uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Ryzen 7 7800X3D uses Raphael (Zen4) (2022−2023) (5 nm). In PassMark, the Core i5-2405S scores 3,397 against the Ryzen 7 7800X3D's 34,293 — a 163.9% lead for the Ryzen 7 7800X3D. Geekbench 6 single-core — the metric most relevant to gaming — records 557 vs 2,700, a 131.6% lead for the Ryzen 7 7800X3D that directly translates to higher frame rates. Multi-core Geekbench: 1,480 vs 15,000 (164.1% advantage for the Ryzen 7 7800X3D). L3 cache: 6 MB (total) on the Core i5-2405S vs 96 MB (total) on the Ryzen 7 7800X3D.

FeatureCore i5-2405SRyzen 7 7800X3D
Cores / Threads
4 / 4
8 / 16+100%
Boost Clock
3.3 GHz
5 GHz+52%
Base Clock
2.5 GHz
4.4 GHz+76%
L3 Cache
6 MB (total)
96 MB (total)+1500%
L2 Cache
256 kB (per core)
1 MB (per core)+300%
Process
32 nm
5 nm-84%
Architecture
Sandy Bridge (2011−2013)
Raphael (Zen4) (2022−2023)
PassMark
3,397
34,293+910%
Cinebench R23 Multi
18,500
Geekbench 6 Single
557
2,700+385%
Geekbench 6 Multi
1,480
15,000+914%
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Memory & Platform

The Core i5-2405S uses the LGA1155 socket (PCIe 2.0), while the Ryzen 7 7800X3D uses AM5 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Core i5-2405S versus DDR5-5200 on the Ryzen 7 7800X3D — the Ryzen 7 7800X3D supports 290.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 7 7800X3D supports up to 128 GB of RAM compared to 32 GB 300% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Core i5-2405S) vs 28 (Ryzen 7 7800X3D) — the Ryzen 7 7800X3D offers 12 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H61,B65,Q65,H67,P67,Z68,B75,Z77 (Core i5-2405S) and X670E,X670,B650E,B650,A620 (Ryzen 7 7800X3D).

FeatureCore i5-2405SRyzen 7 7800X3D
Socket
LGA1155
AM5
PCIe Generation
PCIe 2.0
PCIe 5.0+150%
Max RAM Speed
DDR3-1333
DDR5-5200+290%
Max RAM Capacity
32 GB
128 GB+300%
RAM Channels
2
2
ECC Support
No
Yes
PCIe Lanes
16
28+75%
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Advanced Features

Only the Ryzen 7 7800X3D has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Ryzen 7 7800X3D supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x / EPT (Core i5-2405S) vs AMD-V (Ryzen 7 7800X3D). Both include integrated graphics Intel HD Graphics 3000 (Core i5-2405S) and AMD Radeon Graphics (2-core) (Ryzen 7 7800X3D) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i5-2405S targets Budget, Ryzen 7 7800X3D targets Gaming. Direct competitor: Ryzen 7 7800X3D rivals Intel Core i7-14700K.

FeatureCore i5-2405SRyzen 7 7800X3D
Integrated GPU
Yes
Yes
IGPU Model
Intel HD Graphics 3000
AMD Radeon Graphics (2-core)
Unlocked
No
Yes
AVX-512
No
Yes
Virtualization
VT-x / EPT
AMD-V
Target Use
Budget
Gaming
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Value Analysis

At launch, the Core i5-2405S was priced at $309, while the Ryzen 7 7800X3D came in at $449. On launch pricing ($309 vs $449), Core i5-2405S was $140 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-2405S delivers 11.0 pts/$ vs 76.4 pts/$ for the Ryzen 7 7800X3D — making the Ryzen 7 7800X3D the 149.7% better value option.

FeatureCore i5-2405SRyzen 7 7800X3D
MSRP
$309-31%
$449
Performance per Dollar
11.0
76.4+595%
Release Date
2011
2023

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