Iris Pro Graphics P6300 vs Radeon R9 M275X / M375

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 P6300 vs Radeon R9 M275X / M375 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 P6300 vs Radeon R9 M275X / M375: 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 P6300

2014

Why buy it

✅Costs $150 less on MSRP ($150 MSRP vs $300 MSRP).
✅Delivers 100.9% more G3D Mark for each dollar spent, at 10.5 vs 5.3 G3D/$ ($150 MSRP vs $300 MSRP).
✅Draws 15W instead of 75W, a 60W reduction.

Trade-offs

❌Less VRAM, with Unknown vs 4 GB for high-resolution textures and newer games.
❌2014 hardware with Unknown of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.

Radeon R9 M275X / M375

2014

Why buy it

✅100+% more VRAM for high-resolution textures and newer games (4 GB vs Unknown).
✅Iris Pro Graphics P6300 is already obsolete for modern gaming, so Radeon R9 M275X / M375 is the less risky modern option long term.

Trade-offs

❌2014 hardware with 4 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌
100% HIGHER MSRP
$300 MSRPvs$150 MSRP
❌Lower G3D Mark per dollar, at 5.3 vs 10.5 G3D/$ ($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 P6300 is the faster gaming card right now based on the synthetic data we have. It leads by 0.4% in PassMark G3D (1,582 vs 1,575), which is the best performance signal available in this matchup.

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

Radeon R9 M275X / M375 is the safer long-term pick for 2026 and beyond. The case is simple: 4 GB 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 P6300 makes the most sense to buy today. It is $150 cheaper on MSRP at $150 vs $300, and it leads G3D-per-dollar by 100.9% (10.5 vs 5.3), so the value case lines up with the gaming result. If you are mainly targeting 1080p, Iris Pro Graphics P6300 is the easier value choice. If you care more about 1080p and some 1440p headroom, Radeon R9 M275X / M375 has the stronger long-term case.

Iris Pro Graphics P6300 vs Radeon R9 M275X / M375 Technical Specifications

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

Iris Pro Graphics P6300

The Iris Pro Graphics P6300 is manufactured by Intel. It was released in September 5 2014. It features the Generation 8.0 architecture. The core clock ranges from 300 MHz to 800 MHz. It has 384 shading units. The thermal design power (TDP) is 15W. Manufactured using 14 nm process technology. G3D Mark benchmark score: 1,582 points.

Radeon R9 M275X / M375

The Radeon R9 M275X / M375 is manufactured by AMD. It was released in January 28 2014. It features the GCN 1.0 architecture. The core clock ranges from 900 MHz to 925 MHz. It has 640 shading units. The thermal design power (TDP) is 75W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,575 points.

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Graphics Performance

The Iris Pro Graphics P6300 scores 1,582 and the Radeon R9 M275X / M375 reaches 1,575 in the G3D Mark benchmark — just a 0.4% difference, making them near-identical in rasterization performance. The Iris Pro Graphics P6300 is built on Generation 8.0 while the Radeon R9 M275X / M375 uses GCN 1.0, both on 14 nm vs 28 nm. Shader units: 384 (Iris Pro Graphics P6300) vs 640 (Radeon R9 M275X / M375). Raw compute: 0.6144 TFLOPS (Iris Pro Graphics P6300) vs 1.184 TFLOPS (Radeon R9 M275X / M375). Boost clocks: 800 MHz vs 925 MHz.

Feature	Iris Pro Graphics P6300	Radeon R9 M275X / M375
G3D Mark Score	1,582	1,575
Architecture	Generation 8.0	GCN 1.0
Process Node	14 nm	28 nm
Shading Units	384	640+67%
Compute (TFLOPS)	0.6144 TFLOPS	1.184 TFLOPS+93%
Boost Clock	800 MHz	925 MHz+16%
ROPs	6	16+167%
TMUs	48+20%	40

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Advanced Features (DLSS/FSR)

Feature	Iris Pro Graphics P6300	Radeon R9 M275X / M375
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 P6300 has 0 MB of VRAM, while the Radeon R9 M275X / M375 carries 4 GB. Radeon R9 M275X / M375 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 P6300 and 128-bit on the Radeon R9 M275X / M375.

Feature	Iris Pro Graphics P6300	Radeon R9 M275X / M375
VRAM Capacity	Shared System RAM	4 GB
Memory Type	Shared	GDDR5
Memory Bandwidth	System	Unknown
Bus Width	System	128-bit

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Display & API Support

DirectX support: 12 (11_1) (Iris Pro Graphics P6300) vs 12_0 (Radeon R9 M275X / M375).

Feature	Iris Pro Graphics P6300	Radeon R9 M275X / M375
DirectX	12 (11_1)	12_0

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Power & Dimensions

The Iris Pro Graphics P6300 draws 15W versus the Radeon R9 M275X / M375's 75W — a 133.3% difference. The Iris Pro Graphics P6300 is more power-efficient. Recommended PSU: 1W (Iris Pro Graphics P6300) vs 350W (Radeon R9 M275X / M375). Power connectors: Integrated vs Mobile.

Feature	Iris Pro Graphics P6300	Radeon R9 M275X / M375
TDP	15W-80%	75W
Recommended PSU	1W-100%	350W
Power Connector	Integrated	Mobile
Length	—	1mm
Slots	—	0
Temp (Load)	75°C	—
Perf/Watt	105.5+402%	21.0

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Value Analysis

At launch, the Iris Pro Graphics P6300 came in at $150, while the Radeon R9 M275X / M375 launched at $300. On MSRP, Iris Pro Graphics P6300 was 50% cheaper ($150 less). Performance per dollar on MSRP (G3D Mark / MSRP): 10.5 (Iris Pro Graphics P6300) vs 5.3 (Radeon R9 M275X / M375) — the Iris Pro Graphics P6300 offers 98.1% better value.

Feature	Iris Pro Graphics P6300	Radeon R9 M275X / M375
MSRP	$150-50%	$300
Performance per Dollar	10.5+98%	5.3
Codename	Broadwell GT3e	Venus
Release	September 5 2014	January 28 2014
Ranking	#755	#746

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