Mobility Radeon HD 3670 vs Radeon HD4650

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.

Mobility Radeon HD 3670 vs Radeon HD4650 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.

Mobility Radeon HD 3670 vs Radeon HD4650: Pros, Cons & Final Verdict

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

Mobility Radeon HD 3670

2010

Why buy it

✅100% more VRAM for high-resolution textures and newer games (1 GB vs 512 MB).
✅Draws 50W instead of 200W, a 150W reduction.
✅More future proof: TeraScale 2 (2009−2015) on 40nm with a newer platform for upcoming games.

Trade-offs

❌2010 hardware with 1 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌
58% HIGHER MSRP
$79 MSRPvs$50 MSRP
❌Lower G3D Mark per dollar, at 2.9 vs 4.8 G3D/$ ($79 MSRP vs $50 MSRP).

Radeon HD4650

2010

Why buy it

✅Costs $29 less on MSRP ($50 MSRP vs $79 MSRP).
✅Delivers 63.4% more G3D Mark for each dollar spent, at 4.8 vs 2.9 G3D/$ ($50 MSRP vs $79 MSRP).

Trade-offs

❌Less VRAM, with 512 MB vs 1 GB for high-resolution textures and newer games.
❌2010 hardware with 512 MB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌300% higher power demand at 200W vs 50W.

Quick Answers

Which GPU is faster for gaming right now?

Radeon HD4650 is the faster gaming card right now based on the synthetic data we have. It leads by 3.4% in PassMark G3D (240 vs 232), which is the best performance signal available in this matchup.

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

Mobility Radeon HD 3670 is the safer long-term pick for 2026 and beyond. The case is simple: 1 GB vs 512 MB of VRAM. That gives it more room for heavier textures and higher settings over time.

Which GPU is the better buy today?

Radeon HD4650 makes the most sense to buy today. It is $29 cheaper on MSRP at $50 vs $79, and it leads G3D-per-dollar by 63.4% (4.8 vs 2.9), so the value case lines up with the gaming result. If you are mainly targeting 1080p and some 1440p, Radeon HD4650 is the easier value choice. If you care more about 1080p and some 1440p headroom, Mobility Radeon HD 3670 has the stronger long-term case.

Mobility Radeon HD 3670 vs Radeon HD4650 Technical Specifications

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

Mobility Radeon HD 3670

The Mobility Radeon HD 3670 is manufactured by AMD. It was released in January 7 2010. It features the TeraScale 2 architecture. The core clock speed is 700 MHz. It has 800 shading units. The thermal design power (TDP) is 50W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 232 points.

Radeon HD4650

The Radeon HD4650 is manufactured by AMD. It was released in December 14 2010. It features the TeraScale 3 architecture. The boost clock speed is 800 MHz. It has 1408 shading units. The thermal design power (TDP) is 200W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 240 points. Launch price was $299.

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Graphics Performance

The Mobility Radeon HD 3670 scores 232 and the Radeon HD4650 reaches 240 in the G3D Mark benchmark — just a 3.4% difference, making them near-identical in rasterization performance. The Mobility Radeon HD 3670 is built on TeraScale 2 while the Radeon HD4650 uses TeraScale 3, both on a 40 nm process. Shader units: 800 (Mobility Radeon HD 3670) vs 1,408 (Radeon HD4650). Raw compute: 1.12 TFLOPS (Mobility Radeon HD 3670) vs 2.253 TFLOPS (Radeon HD4650).

Feature	Mobility Radeon HD 3670	Radeon HD4650
G3D Mark Score	232	240+3%
Architecture	TeraScale 2	TeraScale 3
Process Node	40 nm	40 nm
Shading Units	800	1408+76%
Compute (TFLOPS)	1.12 TFLOPS	2.253 TFLOPS+101%
ROPs	16	32+100%
TMUs	40	88+120%
L1 Cache	80 KB	352 KB+340%
L2 Cache	256 KB	512 KB+100%
Frame Generation	FSR upscaling	FSR upscaling

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Advanced Features (DLSS/FSR)

Feature	Mobility Radeon HD 3670	Radeon HD4650
Upscaling Tech	FSR Upscaling / FSR 4	FSR Upscaling / FSR 4
Frame Generation	Not Supported	Not Supported
Ray Reconstruction	No	No
Low Latency	AMD Anti-Lag	AMD Anti-Lag

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Video Memory (VRAM)

The Mobility Radeon HD 3670 has 1 GB of VRAM, while the Radeon HD4650 carries 512 MB. Mobility Radeon HD 3670 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 Mobility Radeon HD 3670 and 128-bit on the Radeon HD4650. L2 Cache: 256 KB (Mobility Radeon HD 3670) vs 512 KB (Radeon HD4650) — the Radeon HD4650 has significantly larger on-die cache to reduce VRAM reliance.

Feature	Mobility Radeon HD 3670	Radeon HD4650
VRAM Capacity	1 GB+100%	0.5 GB
Memory Type	GDDR5	GDDR5
Memory Bandwidth	Unknown	Unknown
Bus Width	128-bit	128-bit
L2 Cache	256 KB	512 KB+100%

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Power & Dimensions

The Mobility Radeon HD 3670 draws 50W versus the Radeon HD4650's 200W — a 120% difference. The Mobility Radeon HD 3670 is more power-efficient. Recommended PSU: 350W (Mobility Radeon HD 3670) vs 350W (Radeon HD4650). Power connectors: PCIe-powered vs PCIe-powered.

Feature	Mobility Radeon HD 3670	Radeon HD4650
TDP	50W-75%	200W
Recommended PSU	350W	350W
Power Connector	PCIe-powered	PCIe-powered
Length	—	193mm
Slots	—	1
Perf/Watt	4.6+283%	1.2

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Value Analysis

At launch, the Mobility Radeon HD 3670 came in at $79, while the Radeon HD4650 launched at $50. On MSRP, Radeon HD4650 was 36.7% cheaper ($29 less). Performance per dollar on MSRP (G3D Mark / MSRP): 2.9 (Mobility Radeon HD 3670) vs 4.8 (Radeon HD4650) — the Radeon HD4650 offers 65.5% better value.

Feature	Mobility Radeon HD 3670	Radeon HD4650
MSRP	$79	$50-37%
Performance per Dollar	2.9	4.8+66%
Codename	Broadway	Cayman
Release	January 7 2010	December 14 2010
Ranking	#846	#623

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