Iris Plus Graphics 645 vs Radeon Vega 8 Ryzen 5 3500C

Intel

Iris Plus Graphics 645

2019Core: 300 MHzBoost: 1050 MHz
Similar parts
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VS
AMD

Radeon Vega 8 Ryzen 5 3500C

2020Boost: 2100 MHz
Similar parts
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Iris Plus Graphics 645 vs Radeon Vega 8 Ryzen 5 3500C Performance Spectrum

About G3D Mark

G3D Mark is a standard benchmark that measures graphics performance in real-world gaming scenarios. It simplifies comparing cards from different brands, where higher scores directly correlate with better fps and smoother gaming experiences.

Iris Plus Graphics 645 vs Radeon Vega 8 Ryzen 5 3500C: Pros, Cons & Final Verdict

See where each GPU makes more sense in practice: raw FPS, VRAM, features, power draw, pricing, and long-term headroom.

Iris Plus Graphics 645

2019

Why buy it

  • Competitive enough if your priority is price, power, or specific feature preference.

Trade-offs

  • 2019 hardware with Unknown of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
  • Lower G3D Mark per dollar, at 0 vs 14.2 G3D/$ (Unknown MSRP vs $99 MSRP).

Radeon Vega 8 Ryzen 5 3500C

2020

Why buy it

  • Delivers 100+% more G3D Mark for each dollar spent, at 14.2 vs 0 G3D/$ ($99 MSRP vs Unknown MSRP).
  • Iris Plus Graphics 645 is already obsolete for modern gaming, so Radeon Vega 8 Ryzen 5 3500C is the less risky modern option long term.
  • More future proof: Vega (2017−2020) on 7nm with a newer platform for upcoming games.

Trade-offs

  • 2020 hardware with Unknown of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.

Quick Answers

Which GPU is faster for gaming right now?
Iris Plus Graphics 645 is the faster gaming card right now based on the synthetic data we have. It leads by 2.8% in PassMark G3D (1,450 vs 1,410), which is the best performance signal available in this matchup.
Which GPU is the safer long-term pick for 2026 and beyond?
Radeon Vega 8 Ryzen 5 3500C is the safer long-term pick for 2026 and beyond. The case is simple: the newer upscaling stack, FSR Upscaling / FSR 4 (2025) instead of no meaningful modern upscaling stack, a 7nm process instead of 14nm, and a newer 2020 generation instead of 2019. That makes it the less risky pick as game demands keep moving.
Which GPU is the better buy today?
Radeon Vega 8 Ryzen 5 3500C makes the most sense today based on the pricing and value data we have for this matchup. Iris Plus Graphics 645 still makes more sense if max raw gaming performance matters more than value.

Iris Plus Graphics 645 vs Radeon Vega 8 Ryzen 5 3500C Technical Specifications

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

Intel

Iris Plus Graphics 645

The Iris Plus Graphics 645 is manufactured by Intel. It was released in October 7 2019. It features the Generation 9.5 architecture. The core clock ranges from 300 MHz to 1050 MHz. It has 384 shading units. The thermal design power (TDP) is 15W. Manufactured using 14 nm+++ process technology. G3D Mark benchmark score: 1,450 points.

AMD

Radeon Vega 8 Ryzen 5 3500C

The Radeon Vega 8 Ryzen 5 3500C is manufactured by AMD. It was released in January 7 2020. It features the Vega architecture. The boost clock speed is 2100 MHz. It has 512 shading units. The thermal design power (TDP) is 15W. Manufactured using 7 nm process technology. G3D Mark benchmark score: 1,410 points.

Graphics Performance

The Iris Plus Graphics 645 scores 1,450 and the Radeon Vega 8 Ryzen 5 3500C reaches 1,410 in the G3D Mark benchmark — just a 2.8% difference, making them near-identical in rasterization performance. The Iris Plus Graphics 645 is built on Generation 9.5 while the Radeon Vega 8 Ryzen 5 3500C uses Vega, both on 14 nm+++ vs 7 nm. Shader units: 384 (Iris Plus Graphics 645) vs 512 (Radeon Vega 8 Ryzen 5 3500C). Boost clocks: 1050 MHz vs 2100 MHz.

FeatureIris Plus Graphics 645Radeon Vega 8 Ryzen 5 3500C
G3D Mark Score
1,450+3%
1,410
Architecture
Generation 9.5
Vega
Process Node
14 nm+++
7 nm
Shading Units
384
512+33%
Boost Clock
1050 MHz
2100 MHz+100%

Advanced Features (DLSS/FSR)

FeatureIris Plus Graphics 645Radeon Vega 8 Ryzen 5 3500C
Upscaling Tech
Upscaling support
FSR Upscaling / FSR 4
Frame Generation
Not Supported
Not Supported
Ray Reconstruction
No
No
Low Latency
Standard
AMD Anti-Lag
💾

Video Memory (VRAM)

Both cards ship with 0 MB of Shared. Memory bus width is System on the Iris Plus Graphics 645 and System on the Radeon Vega 8 Ryzen 5 3500C.

FeatureIris Plus Graphics 645Radeon Vega 8 Ryzen 5 3500C
VRAM Capacity
Shared System RAM
Shared System RAM
Memory Type
Shared
Shared
Memory Bandwidth
System
System
Bus Width
System
System
🔌

Power & Dimensions

The Iris Plus Graphics 645 draws 15W versus the Radeon Vega 8 Ryzen 5 3500C's 15W — a 0% difference. The Radeon Vega 8 Ryzen 5 3500C is more power-efficient. Recommended PSU: 1W (Iris Plus Graphics 645) vs 1W (Radeon Vega 8 Ryzen 5 3500C). Power connectors: Integrated vs Integrated.

FeatureIris Plus Graphics 645Radeon Vega 8 Ryzen 5 3500C
TDP
15W
15W
Recommended PSU
1W
1W
Power Connector
Integrated
Integrated
Length
1mm
Slots
0
Perf/Watt
96.7+3%
94.0
💰

Value Analysis

At launch, the Iris Plus Graphics 645 came in at $0, while the Radeon Vega 8 Ryzen 5 3500C launched at $99. On MSRP, Iris Plus Graphics 645 was 100+% cheaper ($99 less). Performance per dollar on MSRP (G3D Mark / MSRP): Infinity (Iris Plus Graphics 645) vs 14.2 (Radeon Vega 8 Ryzen 5 3500C) — the Iris Plus Graphics 645 offers Infinity% better value. The newer card here is Radeon Vega 8 Ryzen 5 3500C (2020 vs 2019).

FeatureIris Plus Graphics 645Radeon Vega 8 Ryzen 5 3500C
MSRP
$0-100%
$99
Performance per Dollar
Infinity
14.2
Codename
Coffee Lake GT3e
Vega
Release
October 7 2019
January 7 2020
Ranking
#720
#545

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