FX-8100 vs Ryzen 7 7800X3D

FX-8100

8 Cores8 Thrd95 WWMax: 3.7 GHz2011

Ryzen 7 7800X3D

8 Cores16 Thrd120 WWMax: 5 GHz2023

Performance Spectrum - CPU

FX-8100

8 / 8

4,095

0.0%

Ryzen Threadripper 3990X

Ryzen 7 7800X3D

8 / 16

34,293

+737.4%

Ryzen Threadripper PRO 7965WX

Ryzen Threadripper 7970X

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.

Value Upgrade Path

This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. The FX-8100 is positioned at rank #928 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.

MSRP is the manufacturer's suggested retail price.•
Avg price is the current average price collected from markets across the web.

Performance Per Dollar FX-8100

Ryzen 9 7950X

MSRP: $194|Avg: $20

22836%

Core i9-10900T

MSRP: $120|Avg: $5

21578%

Ryzen 3 PRO 4355GE

MSRP: $423|Avg: $5

15667%

Ryzen Threadripper 3960X

MSRP: $1399|Avg: $85

4720%

Ryzen 9 9950X

MSRP: $649|Avg: $129

3739%

Ryzen 5 8400F

MSRP: $303|Avg: $55

3271%

Ryzen 7 PRO 2700

MSRP: $299|Avg: $60

1873%

Ryzen 5 2600X

MSRP: $229|Avg: $55

1849%

Ryzen 3 PRO 5350G

MSRP: $150|Avg: $60

1683%

#10

Core Ultra 5 245KF

MSRP: $294|Avg: $189

1683%

#11

Ryzen 5 5500

MSRP: $159|Avg: $85

1664%

#12

Ryzen 5 3600

MSRP: $199|Avg: $80

1619%

#13

Core i3-9100E

MSRP: $202|Avg: $30

1597%

#14

Core Ultra 5 245K

MSRP: $319|Avg: $200

1590%

#15

Core i3-8300T

MSRP: $138|Avg: $25

1576%

#302

Core i7-6900K

MSRP: $1089|Avg: $1089

99%

#303

Core i7-5960X

MSRP: $999|Avg: $83

98%

#928

FX-8100

MSRP: $300|Avg: $50

100%

#930

Celeron E1400

MSRP: $53|Avg: $63

99%

#932

Pentium E6800

MSRP: $86|Avg: $10

98%

#933

Core i3-530

MSRP: $113|Avg: $15

98%

#935

Athlon II X3 405e

MSRP: $100|Avg: $10

98%

#936

Core i3-2105

MSRP: $138|Avg: $30

98%

#937

Core i3-3225

MSRP: $172|Avg: $167

97%

#938

Athlon II X3 400e

MSRP: $100|Avg: $10

97%

#939

Athlon II X2 245e

MSRP: $87|Avg: $15

96%

#940

Core i3-3220T

MSRP: $149|Avg: $146

96%

#941

Athlon II X2 240e

MSRP: $77|Avg: $77

96%

#942

Pentium G630T

MSRP: $79|Avg: $15

96%

#943

Core i7-3970X Extreme Edition

MSRP: $990|Avg: $175

95%

Based on actual market prices and performance synthetic scores.

Performance Per Dollar Ryzen 7 7800X3D

#197

Ryzen 5 5600X3D

MSRP: $229|Avg: $229

107%

#198

Core i3-9350KF

MSRP: $173|Avg: $80

106%

#199

Ryzen 7 PRO 5755GE

MSRP: $220|Avg: $220

106%

#200

Core i3-9300

MSRP: $143|Avg: $75

106%

#201

Ryzen 7 3800XT

MSRP: $399|Avg: $249

105%

#202

Core i5-11400T

MSRP: $182|Avg: $140

104%

#203

Core i3-10305

MSRP: $149|Avg: $100

103%

#204

Core i3-9320

MSRP: $154|Avg: $80

103%

#205

Core i3-10105

MSRP: $122|Avg: $90

103%

#206

Core i3-13100E

MSRP: $150|Avg: $150

102%

#207

Core i9-13900F

MSRP: $524|Avg: $536

102%

#208

Processor 300

MSRP: $82|Avg: $80

102%

#209

Ryzen 5 2600

MSRP: $199|Avg: $145

102%

#210

Ryzen 5 2400GE

MSRP: $169|Avg: $80

101%

#211

Core i9-14900KS

MSRP: $749|Avg: $670

101%

#212

Ryzen 7 7800X3D

MSRP: $449|Avg: $384

100%

#213

Core i3-8100T

MSRP: $117|Avg: $59

100%

#214

Core i7-13700E

MSRP: $390|Avg: $380

100%

#215

Ryzen 7 PRO 5750G

MSRP: $430|Avg: $270

99%

#216

Core i7-9700

MSRP: $333|Avg: $150

99%

#217

Core i5-13500TE

MSRP: $235|Avg: $250

98%

#218

Ryzen 3 PRO 2200G

MSRP: $294|Avg: $76

98%

#219

Ryzen 7 PRO 5845

MSRP: $300|Avg: $300

97%

#220

Athlon PRO 300GE

MSRP: $50|Avg: $50

97%

#221

Athlon Gold 3150G

MSRP: $100|Avg: $80

97%

#222

Core i7-9800X

MSRP: $589|Avg: $210

97%

#223

Ryzen 7 4700G

MSRP: $299|Avg: $235

96%

#224

Ryzen 9 5900

MSRP: $549|Avg: $395

96%

#225

Ryzen 5 7600X3D

MSRP: $299|Avg: $300

96%

#226

Ryzen 5 1600X

MSRP: $249|Avg: $144

59%

Based on actual market prices and performance synthetic scores.

Performance Comparison

About PassMark

🏆 Chipversus Verdict

🚀 Performance Leadership

Generational Difference: This comparison involves processors from different technological eras. The Ryzen 7 7800X3D (2023) utilizes 5 nm technology and DDR5-5200, providing a fundamental performance advantage.

Insight	FX-8100	Ryzen 7 7800X3D
Gaming	❌ Lower gaming performance	✅ Superior gaming performance
Workstation	❌ Weaker in multi-core tasks	✅ Better multi-core power
Price	✅ More affordable ($50)	⚠️ Higher cost ($384)
Longevity	🛑 Legacy (Zambezi (2011−2012) / 32 nm)	✨ Modern (Raphael (Zen4) (2022−2023) / 5 nm)

💎 Value Proposition

The FX-8100 (2011) relies on 32 nm technology and DDR3, placing it in a different performance category relative to modern standards.

Insight	FX-8100	Ryzen 7 7800X3D
Cost Efficiency	❌ Lower cost efficiency	✅ Better overall value (+9%)
Upfront Cost	✅ More affordable ($50)	⚠️ Higher cost ($384)

Performance Check

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

FX-8100 Benchmark Check

Ryzen 7 7800X3D Benchmark Check

Technical Specifications

Side-by-side comparison of FX-8100 and Ryzen 7 7800X3D

FX-8100

The FX-8100 is manufactured by AMD. It was released in 12 October 2011 (14 years ago). It is based on the Zambezi (2011−2012) architecture. It features 8 cores and 8 threads. Base frequency is 2.8 GHz, with boost up to 3.7 GHz. L3 cache: 8 MB (total). L2 cache: 8 MB. Built on 32 nm process technology. Socket: AM3+. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 4,095 points. Launch price was $69.

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 FX-8100 packs 8 cores / 8 threads, matching the Ryzen 7 7800X3D's 8 cores. Boost clocks reach 3.7 GHz on the FX-8100 versus 5 GHz on the Ryzen 7 7800X3D — a 29.9% clock advantage for the Ryzen 7 7800X3D (base: 2.8 GHz vs 4.4 GHz). The FX-8100 uses the Zambezi (2011−2012) architecture (32 nm), while the Ryzen 7 7800X3D uses Raphael (Zen4) (2022−2023) (5 nm). In PassMark, the FX-8100 scores 4,095 against the Ryzen 7 7800X3D's 34,293 — a 157.3% lead for the Ryzen 7 7800X3D. Geekbench 6 single-core — the metric most relevant to gaming — records 455 vs 2,700, a 142.3% lead for the Ryzen 7 7800X3D that directly translates to higher frame rates. Multi-core Geekbench: 1,621 vs 15,000 (161% advantage for the Ryzen 7 7800X3D). L3 cache: 8 MB (total) on the FX-8100 vs 96 MB (total) on the Ryzen 7 7800X3D.

Feature	FX-8100	Ryzen 7 7800X3D
Cores / Threads	8 / 8	8 / 16
Boost Clock	3.7 GHz	5 GHz+35%
Base Clock	2.8 GHz	4.4 GHz+57%
L3 Cache	8 MB (total)	96 MB (total)+1100%
L2 Cache	8 MB+700%	1 MB (per core)
Process	32 nm	5 nm-84%
Architecture	Zambezi (2011−2012)	Raphael (Zen4) (2022−2023)
PassMark	4,095	34,293+737%
Cinebench R23 Multi	—	18,500
Geekbench 6 Single	455	2,700+493%
Geekbench 6 Multi	1,621	15,000+825%

🧠

Memory & Platform

The FX-8100 uses the AM3+ 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 DDR3-1866 on the FX-8100 versus DDR5-5200 on the Ryzen 7 7800X3D — the Ryzen 7 7800X3D supports 50% 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 16 GB — 155.6% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (FX-8100) vs 28 (Ryzen 7 7800X3D) — the Ryzen 7 7800X3D offers 28 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD 990FX,AMD 970 (FX-8100) and X670E,X670,B650E,B650,A620 (Ryzen 7 7800X3D).

Feature	FX-8100	Ryzen 7 7800X3D
Socket	AM3+	AM5
PCIe Generation	PCIe 2.0	PCIe 5.0+150%
Max RAM Speed	DDR3-1866	DDR5-5200+67%
Max RAM Capacity	16 GB	128 GB+700%
RAM Channels	2	2
ECC Support	❌	✅
PCIe Lanes	0	28

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Only the Ryzen 7 7800X3D supports AVX-512 instructions — important for machine learning and scientific applications. Both support AMD-V virtualization. The Ryzen 7 7800X3D includes integrated graphics (AMD Radeon Graphics (2-core)), while the FX-8100 requires a dedicated GPU. Primary use case: Ryzen 7 7800X3D targets Gaming. Direct competitor: Ryzen 7 7800X3D rivals Intel Core i7-14700K.

Feature	FX-8100	Ryzen 7 7800X3D
Integrated GPU	No	Yes
IGPU Model	—	AMD Radeon Graphics (2-core)
Unlocked	Yes	Yes
AVX-512	No	Yes
Virtualization	AMD-V	AMD-V
Target Use	—	Gaming

💰

Value Analysis

The FX-8100 launched at $300 MSRP, while the Ryzen 7 7800X3D debuted at $449. At current prices ($50 vs $384), the FX-8100 is $334 cheaper. In terms of value (PassMark points per dollar), the FX-8100 delivers 81.9 pts/$ vs 89.3 pts/$ for the Ryzen 7 7800X3D — making the Ryzen 7 7800X3D the 8.7% better value option.