Iris Pro Graphics P580 vs Radeon R9 M385X

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 Pro Graphics P580 vs Radeon R9 M385X FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with Ryzen 7 9800X3D to isolate GPU performance.

Search any supported game below to compare 1080p FPS for both components.

Iris Pro Graphics P580 vs Radeon R9 M385X: 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 Pro Graphics P580

2015

Why buy it

✅Costs $150 less on MSRP ($150 MSRP vs $300 MSRP).
✅Delivers 103.2% more G3D Mark for each dollar spent, at 13.5 vs 6.6 G3D/$ ($150 MSRP vs $300 MSRP).
✅Draws 15W instead of 75W, a 60W reduction.

Trade-offs

❌Less VRAM, with Unknown vs 512 MB for high-resolution textures and newer games.
❌2015 hardware with Unknown of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.

Radeon R9 M385X

2015

Why buy it

✅100+% more VRAM for high-resolution textures and newer games (512 MB vs Unknown).
✅Iris Pro Graphics P580 is already obsolete for modern gaming, so Radeon R9 M385X is the less risky modern option long term.

Trade-offs

❌2015 hardware with 512 MB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌
100% HIGHER MSRP
$300 MSRPvs$150 MSRP
❌Lower G3D Mark per dollar, at 6.6 vs 13.5 G3D/$ ($300 MSRP vs $150 MSRP).
❌400% higher power demand at 75W vs 15W.

Quick Answers

Which GPU is faster for gaming right now?

Iris Pro Graphics P580 is the faster gaming card right now based on the synthetic data we have. It leads by 1.6% in PassMark G3D (2,026 vs 1,994), which is the best performance signal available in this matchup.

Which GPU is the safer long-term pick for 2026 and beyond?

Radeon R9 M385X is the safer long-term pick for 2026 and beyond. The case is simple: 512 MB vs Unknown of VRAM and the newer upscaling stack, FSR Upscaling / FSR 4 (2025) instead of no meaningful modern upscaling stack. That gives it more room for heavier textures and higher settings over time.

Which GPU is the better buy today?

Iris Pro Graphics P580 makes the most sense to buy today. It is $150 cheaper on MSRP at $150 vs $300, and it leads G3D-per-dollar by 103.2% (13.5 vs 6.6), so the value case lines up with the gaming result. If you are mainly targeting 1080p, Iris Pro Graphics P580 is the easier value choice. If you care more about 1080p and some 1440p headroom, Radeon R9 M385X has the stronger long-term case.

Iris Pro Graphics P580 vs Radeon R9 M385X Technical Specifications

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

Iris Pro Graphics P580

The Iris Pro Graphics P580 is manufactured by Intel. It was released in September 1 2015. It features the Generation 9.0 architecture. The core clock ranges from 350 MHz to 1050 MHz. It has 576 shading units. The thermal design power (TDP) is 15W. Manufactured using 14 nm+ process technology. G3D Mark benchmark score: 2,026 points.

Radeon R9 M385X

The Radeon R9 M385X is manufactured by AMD. It was released in May 5 2015. It features the GCN 2.0 architecture. The core clock ranges from 1000 MHz to 1100 MHz. It has 896 shading units. The thermal design power (TDP) is 75W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,994 points.

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Graphics Performance

The Iris Pro Graphics P580 scores 2,026 and the Radeon R9 M385X reaches 1,994 in the G3D Mark benchmark — just a 1.6% difference, making them near-identical in rasterization performance. The Iris Pro Graphics P580 is built on Generation 9.0 while the Radeon R9 M385X uses GCN 2.0, both on 14 nm+ vs 28 nm. Shader units: 576 (Iris Pro Graphics P580) vs 896 (Radeon R9 M385X). Raw compute: 1.21 TFLOPS (Iris Pro Graphics P580) vs 1.971 TFLOPS (Radeon R9 M385X). Boost clocks: 1050 MHz vs 1100 MHz.

Feature	Iris Pro Graphics P580	Radeon R9 M385X
G3D Mark Score	2,026+2%	1,994
Architecture	Generation 9.0	GCN 2.0
Process Node	14 nm+	28 nm
Shading Units	576	896+56%
Compute (TFLOPS)	1.21 TFLOPS	1.971 TFLOPS+63%
Boost Clock	1050 MHz	1100 MHz+5%
ROPs	9	16+78%
TMUs	72+29%	56

✨

Advanced Features (DLSS/FSR)

Feature	Iris Pro Graphics P580	Radeon R9 M385X
Upscaling Tech	Upscaling support	FSR Upscaling / FSR 4
Frame Generation	Not Supported	Not Supported
Ray Reconstruction	No	No
Low Latency	Standard	AMD Anti-Lag

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Video Memory (VRAM)

The Iris Pro Graphics P580 has 0 MB of VRAM, while the Radeon R9 M385X carries 512 MB. Radeon R9 M385X gives you 100+% more memory capacity, which matters more once you move into heavier textures, mods, or higher resolutions. Memory bus width is System on the Iris Pro Graphics P580 and 128-bit on the Radeon R9 M385X.

Feature	Iris Pro Graphics P580	Radeon R9 M385X
VRAM Capacity	Shared System RAM	0.5 GB
Memory Type	Shared	GDDR5
Memory Bandwidth	System	Unknown
Bus Width	System	128-bit

🔌

Power & Dimensions

The Iris Pro Graphics P580 draws 15W versus the Radeon R9 M385X's 75W — a 133.3% difference. The Iris Pro Graphics P580 is more power-efficient. Recommended PSU: 1W (Iris Pro Graphics P580) vs 350W (Radeon R9 M385X). Power connectors: Integrated vs Mobile.

Feature	Iris Pro Graphics P580	Radeon R9 M385X
TDP	15W-80%	75W
Recommended PSU	1W-100%	350W
Power Connector	Integrated	Mobile
Length	—	0mm
Height	—	0mm
Slots	—	0
Temp (Load)	—	85
Perf/Watt	135.1+408%	26.6

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Value Analysis

At launch, the Iris Pro Graphics P580 came in at $150, while the Radeon R9 M385X launched at $300. On MSRP, Iris Pro Graphics P580 was 50% cheaper ($150 less). Performance per dollar on MSRP (G3D Mark / MSRP): 13.5 (Iris Pro Graphics P580) vs 6.6 (Radeon R9 M385X) — the Iris Pro Graphics P580 offers 104.5% better value.

Feature	Iris Pro Graphics P580	Radeon R9 M385X
MSRP	$150-50%	$300
Performance per Dollar	13.5+105%	6.6
Codename	Skylake GT4e	Strato
Release	September 1 2015	May 5 2015
Ranking	#678	#681

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