GeForce 8400M GT vs Radeon 3100

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.

GeForce 8400M GT vs Radeon 3100 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.

GeForce 8400M GT vs Radeon 3100: Pros, Cons & Final Verdict

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

GeForce 8400M GT

2014

Why buy it

✅Costs $149 less on MSRP ($50 MSRP vs $199 MSRP).
✅Delivers 260.4% more G3D Mark for each dollar spent, at 1.3 vs 0.4 G3D/$ ($50 MSRP vs $199 MSRP).
✅Draws 33W instead of 50W, a 17W reduction.

Trade-offs

❌Lower average FPS than Radeon 3100 across 50 tracked games in our benchmark data.
❌Less VRAM, with 256 MB vs 512 MB for high-resolution textures and newer games.
❌2014 hardware with 256 MB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.

Radeon 3100

2019

Why buy it

✅1.0% more average FPS across 50 tracked games in our benchmark data.
✅100% more VRAM for high-resolution textures and newer games (512 MB vs 256 MB).
✅GeForce 8400M GT is already obsolete for modern gaming, so Radeon 3100 is the less risky modern option long term.

Trade-offs

❌2019 hardware with 512 MB of VRAM already sits in legacy territory for modern games.
❌
298% HIGHER MSRP
$199 MSRPvs$50 MSRP
❌Lower G3D Mark per dollar, at 0.4 vs 1.3 G3D/$ ($199 MSRP vs $50 MSRP).
❌51.5% higher power demand at 50W vs 33W.

Quick Answers

Which GPU is faster for gaming right now?

Radeon 3100 is the faster gaming card right now. In our data, it leads by 1.0% in average FPS across 50 tracked games in our benchmark data and by 10.4% in PassMark G3D (74 vs 67), so the answer here is pretty clean.

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

Radeon 3100 is the safer long-term pick for 2026 and beyond. The case is simple: 512 MB vs 256 MB of VRAM, the newer upscaling stack, FSR Upscaling / FSR 4 (2025) instead of no meaningful modern upscaling stack, a 14nm process instead of 28nm, and a newer 2019 generation instead of 2014. That gives it more room for heavier textures and higher settings over time.

Which GPU is the better buy today?

GeForce 8400M GT makes the most sense to buy today. It is $149 cheaper on MSRP at $50 vs $199, and it leads G3D-per-dollar by 260.4% (1.3 vs 0.4), which is enough to swing the recommendation its way. If you are mainly targeting 1080p and some 1440p, GeForce 8400M GT is the easier value choice. If you care more about 1080p and some 1440p headroom, Radeon 3100 has the stronger long-term case.

GeForce 8400M GT vs Radeon 3100 Technical Specifications

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

GeForce 8400M GT

The GeForce 8400M GT is manufactured by NVIDIA. It was released in March 12 2014. It features the Maxwell architecture. The core clock ranges from 1029 MHz to 1124 MHz. It has 384 shading units. The thermal design power (TDP) is 33W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 67 points.

Radeon 3100

The Radeon 3100 is manufactured by AMD. It was released in May 13 2019. It features the GCN 4.0 architecture. The core clock ranges from 1082 MHz to 1218 MHz. It has 512 shading units. The thermal design power (TDP) is 50W. Manufactured using 14 nm process technology. G3D Mark benchmark score: 74 points.

⚡

Graphics Performance

In G3D Mark, the GeForce 8400M GT scores 67 versus the Radeon 3100's 74 — the Radeon 3100 leads by 10.4%. The GeForce 8400M GT is built on Maxwell while the Radeon 3100 uses GCN 4.0, both on 28 nm vs 14 nm. Shader units: 384 (GeForce 8400M GT) vs 512 (Radeon 3100). Raw compute: 0.8632 TFLOPS (GeForce 8400M GT) vs 1.247 TFLOPS (Radeon 3100). Boost clocks: 1124 MHz vs 1218 MHz.

Feature	GeForce 8400M GT	Radeon 3100
G3D Mark Score	67	74+10%
Architecture	Maxwell	GCN 4.0
Process Node	28 nm	14 nm
Shading Units	384	512+33%
Compute (TFLOPS)	0.8632 TFLOPS	1.247 TFLOPS+44%
Boost Clock	1124 MHz	1218 MHz+8%
ROPs	8	16+100%
TMUs	16	32+100%
L1 Cache	192 KB+50%	128 KB
L2 Cache	1 MB+100%	0.5 MB

✨

Advanced Features (DLSS/FSR)

The GeForce 8400M GT gets NVIDIA DLSS, which still tends to look cleaner in motion. The Radeon 3100 leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.

Feature	GeForce 8400M GT	Radeon 3100
Upscaling Tech	Upscaling support	FSR Upscaling / FSR 4
Frame Generation	Not Supported	Not Supported
Ray Reconstruction	No	No
Low Latency	NVIDIA Reflex	AMD Anti-Lag

💾

Video Memory (VRAM)

The GeForce 8400M GT has 256 MB of VRAM, while the Radeon 3100 carries 512 MB. Radeon 3100 gives you 100% more memory capacity, which matters more once you move into heavier textures, mods, or higher resolutions. Memory bus width is 128-bit on the GeForce 8400M GT and 64-bit on the Radeon 3100. L2 Cache: 1 MB (GeForce 8400M GT) vs 0.5 MB (Radeon 3100) — the GeForce 8400M GT has significantly larger on-die cache to reduce VRAM reliance.

Feature	GeForce 8400M GT	Radeon 3100
VRAM Capacity	0.25 GB	0.5 GB+100%
Memory Type	GDDR5	GDDR5
Bus Width	128-bit+100%	64-bit
L2 Cache	1 MB+100%	0.5 MB

🔌

Power & Dimensions

The GeForce 8400M GT draws 33W versus the Radeon 3100's 50W — a 41% difference. The GeForce 8400M GT is more power-efficient. Recommended PSU: 350W (GeForce 8400M GT) vs 350W (Radeon 3100). Power connectors: Legacy vs PCIe-powered.

Feature	GeForce 8400M GT	Radeon 3100
TDP	33W-34%	50W
Recommended PSU	350W	350W
Power Connector	Legacy	PCIe-powered
Length	0mm	—
Height	0mm	—
Slots	0	—
Temp (Load)	75°C	—
Perf/Watt	2.0+33%	1.5

💰

Value Analysis

At launch, the GeForce 8400M GT came in at $50, while the Radeon 3100 launched at $199. On MSRP, GeForce 8400M GT was 74.9% cheaper ($149 less). Performance per dollar on MSRP (G3D Mark / MSRP): 1.3 (GeForce 8400M GT) vs 0.4 (Radeon 3100) — the GeForce 8400M GT offers 225% better value. The newer card here is Radeon 3100 (2019 vs 2014).

Feature	GeForce 8400M GT	Radeon 3100
MSRP	$50-75%	$199
Performance per Dollar	1.3+225%	0.4
Codename	GM108	Polaris 23
Release	March 12 2014	May 13 2019
Ranking	#854	#757

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