Mobility Radeon HD 3870 X2 vs Radeon HD 7670M

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 3870 X2 vs Radeon HD 7670M 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 3870 X2 vs Radeon HD 7670M: 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 3870 X2

2008

Why buy it

✅Delivers 100+% more G3D Mark for each dollar spent, at 1.1 vs 0 G3D/$ ($449 MSRP vs Unknown MSRP).

Trade-offs

❌Less VRAM, with 2 MB vs 1 GB for high-resolution textures and newer games.
❌2008 hardware with 2 MB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.

Radeon HD 7670M

2012

Why buy it

✅49900% more VRAM for high-resolution textures and newer games (1 GB vs 2 MB).
✅Mobility Radeon HD 3870 X2 is already obsolete for modern gaming, so Radeon HD 7670M is the less risky modern option long term.
✅More future proof: GCN 1.0 (2012−2020) on 28nm with a newer platform for upcoming games.

Trade-offs

❌2012 hardware with 1 GB 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 1.1 G3D/$ (Unknown MSRP vs $449 MSRP).

Quick Answers

Which GPU is faster for gaming right now?

Mobility Radeon HD 3870 X2 is the faster gaming card right now based on the synthetic data we have. It leads by 0.4% in PassMark G3D (478 vs 476), which is the best performance signal available in this matchup.

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

Radeon HD 7670M is the safer long-term pick for 2026 and beyond. The case is simple: 1 GB vs 2 MB of VRAM, a 28nm process instead of 55nm, and a newer 2012 generation instead of 2008. That gives it more room for heavier textures and higher settings over time.

Which GPU is the better buy today?

Mobility Radeon HD 3870 X2 makes the most sense today based on the pricing and value data we have for this matchup. If you are mainly targeting 1080p, Mobility Radeon HD 3870 X2 is the easier value choice. If you care more about 1080p and some 1440p headroom, Radeon HD 7670M has the stronger long-term case.

Mobility Radeon HD 3870 X2 vs Radeon HD 7670M Technical Specifications

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

Mobility Radeon HD 3870 X2

The Mobility Radeon HD 3870 X2 is manufactured by AMD. It was released in September 1 2008. It features the TeraScale architecture. The core clock speed is 660 MHz. It has 320 ×2 shading units. The thermal design power (TDP) is 110W. Manufactured using 55 nm process technology. G3D Mark benchmark score: 478 points.

Radeon HD 7670M

The Radeon HD 7670M is manufactured by AMD. It was released in April 24 2012. It features the GCN 1.0 architecture. The core clock speed is 850 MHz. It has 1280 shading units. The thermal design power (TDP) is 100W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 476 points.

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Graphics Performance

The Mobility Radeon HD 3870 X2 scores 478 and the Radeon HD 7670M reaches 476 in the G3D Mark benchmark — just a 0.4% difference, making them near-identical in rasterization performance. The Mobility Radeon HD 3870 X2 is built on TeraScale while the Radeon HD 7670M uses GCN 1.0, both on 55 nm vs 28 nm. Shader units: 320 (Mobility Radeon HD 3870 X2) vs 1,280 (Radeon HD 7670M). Raw compute: 0.4224 TFLOPS ×2 (Mobility Radeon HD 3870 X2) vs 2.176 TFLOPS (Radeon HD 7670M).

Feature	Mobility Radeon HD 3870 X2	Radeon HD 7670M
G3D Mark Score	478	476
Architecture	TeraScale	GCN 1.0
Process Node	55 nm	28 nm
Shading Units	320 ×2	1280+300%
Compute (TFLOPS)	0.4224 TFLOPS ×2	2.176 TFLOPS+415%
ROPs	16 ×2	32+100%
TMUs	16 ×2	80+400%
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 3870 X2	Radeon HD 7670M
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 3870 X2 has 2 MB of VRAM, while the Radeon HD 7670M carries 1 GB. Radeon HD 7670M gives you 49900% more memory capacity, which matters more once you move into heavier textures, mods, or higher resolutions. Memory bus width is 64-bit on the Mobility Radeon HD 3870 X2 and System on the Radeon HD 7670M. L2 Cache: 256 KB (Mobility Radeon HD 3870 X2) vs 512 KB (Radeon HD 7670M) — the Radeon HD 7670M has significantly larger on-die cache to reduce VRAM reliance.

Feature	Mobility Radeon HD 3870 X2	Radeon HD 7670M
VRAM Capacity	0.002 GB	1 GB+49900%
Memory Type	GDDR5	Shared
Memory Bandwidth	Unknown	System
Bus Width	64-bit	System
L2 Cache	256 KB	512 KB+100%

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Power & Dimensions

The Mobility Radeon HD 3870 X2 draws 110W versus the Radeon HD 7670M's 100W — a 9.5% difference. The Radeon HD 7670M is more power-efficient. Recommended PSU: 350W (Mobility Radeon HD 3870 X2) vs 350W (Radeon HD 7670M). Power connectors: PCIe-powered vs 1x 6-pin.

Feature	Mobility Radeon HD 3870 X2	Radeon HD 7670M
TDP	110W	100W-9%
Recommended PSU	350W	350W
Power Connector	PCIe-powered	1x 6-pin
Length	1mm	—
Slots	0	—
Perf/Watt	4.3	4.8+12%

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Value Analysis

The newer card here is Radeon HD 7670M (2012 vs 2008).

Feature	Mobility Radeon HD 3870 X2	Radeon HD 7670M
MSRP	$449	—
Codename	M88	Wimbledon
Release	September 1 2008	April 24 2012
Ranking	#919	#531

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