Radeon HD 3870 X2 vs Radeon HD 7620G + 8670M Dual

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.

Radeon HD 3870 X2 vs Radeon HD 7620G + 8670M Dual 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.

Radeon HD 3870 X2 vs Radeon HD 7620G + 8670M Dual: Pros, Cons & Final Verdict

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

Radeon HD 3870 X2

2008

Why buy it

✅Competitive enough if your priority is price, power, or specific feature preference.

Trade-offs

❌Lower average FPS than Radeon HD 7620G + 8670M Dual across 49 tracked games in our benchmark data.
❌2008 hardware with 512 MB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌
199.3% HIGHER MSRP
$449 MSRPvs$150 MSRP
❌Lower G3D Mark per dollar, at 1.3 vs 3.8 G3D/$ ($449 MSRP vs $150 MSRP).
❌472% higher power demand at 286W vs 50W.

Radeon HD 7620G + 8670M Dual

2013

Why buy it

✅41.2% more average FPS across 49 tracked games in our benchmark data.
✅Costs $299 less on MSRP ($150 MSRP vs $449 MSRP).
✅Delivers 194.2% more G3D Mark for each dollar spent, at 3.8 vs 1.3 G3D/$ ($150 MSRP vs $449 MSRP).
✅Draws 50W instead of 286W, a 236W reduction.
✅Measures 1mm instead of 267mm, a 266mm shorter card that is more SFF-friendly.

Trade-offs

❌2013 hardware with 512 MB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.

Quick Answers

Which GPU is faster for gaming right now?

Radeon HD 7620G + 8670M Dual is the faster gaming card right now. In our data, it leads by 41.2% in average FPS across 49 tracked games in our benchmark data. PassMark G3D leans toward Radeon HD 3870 X2 instead at 587 vs 577, so for this question the real-game FPS result matters more than the synthetic split.

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

Radeon HD 3870 X2 is the safer long-term pick for 2026 and beyond because it comes out ahead on the available hardware-headroom signals for this matchup.

Which GPU is the better buy today?

Radeon HD 7620G + 8670M Dual makes the most sense to buy today. It is $299 cheaper on MSRP at $150 vs $449, and it leads G3D-per-dollar by 194.2% (3.8 vs 1.3), so the value case lines up with the gaming result. If you are mainly targeting 1080p and some 1440p, Radeon HD 7620G + 8670M Dual is the easier value choice. If you care more about 1080p and some 1440p headroom, Radeon HD 3870 X2 has the stronger long-term case.

Radeon HD 3870 X2 vs Radeon HD 7620G + 8670M Dual Technical Specifications

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

Radeon HD 3870 X2

The Radeon HD 3870 X2 is manufactured by AMD. It was released in August 12 2008. It features the TeraScale architecture. The core clock speed is 700 MHz. It has 800 ×2 shading units. The thermal design power (TDP) is 286W. Manufactured using 55 nm process technology. G3D Mark benchmark score: 587 points. Launch price was $550.

Radeon HD 7620G + 8670M Dual

The Radeon HD 7620G + 8670M Dual is manufactured by AMD. It was released in August 1 2013. The core clock speed is 720 / 775 MHz. It has 768 shading units. The thermal design power (TDP) is 50W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 577 points.

⚡

Graphics Performance

The Radeon HD 3870 X2 scores 587 and the Radeon HD 7620G + 8670M Dual reaches 577 in the G3D Mark benchmark — just a 1.7% difference, making them near-identical in rasterization performance. Shader units: 800 (Radeon HD 3870 X2) vs 768 (Radeon HD 7620G + 8670M Dual).

Feature	Radeon HD 3870 X2	Radeon HD 7620G + 8670M Dual
G3D Mark Score	587+2%	577
Process Node	55 nm	28 nm
Shading Units	800 ×2+4%	768
Frame Generation	FSR upscaling	FSR upscaling

✨

Advanced Features (DLSS/FSR)

Feature	Radeon HD 3870 X2	Radeon HD 7620G + 8670M Dual
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

💾

Video Memory (VRAM)

Both cards ship with 512 MB of GDDR5. Memory bus width is 64-bit on the Radeon HD 3870 X2 and 128-bit on the Radeon HD 7620G + 8670M Dual.

Feature	Radeon HD 3870 X2	Radeon HD 7620G + 8670M Dual
VRAM Capacity	0.5 GB	0.5 GB
Memory Type	GDDR5	GDDR5
Memory Bandwidth	Unknown	Unknown
Bus Width	64-bit	128-bit+100%

🖥️

Display & API Support

DirectX support: 10.1 (Radeon HD 3870 X2) vs 11.2 (Radeon HD 7620G + 8670M Dual). Maximum simultaneous displays: 2 vs 0.

Feature	Radeon HD 3870 X2	Radeon HD 7620G + 8670M Dual
DirectX	10.1	11.2+11%
Max Displays	2	0

🎬

Media & Encoding

Hardware encoder: UVD+ (Radeon HD 3870 X2) vs UVD 3 (Radeon HD 7620G + 8670M Dual). Decoder: UVD+ vs UVD 3.

Feature	Radeon HD 3870 X2	Radeon HD 7620G + 8670M Dual
Encoder	UVD+	UVD 3
Decoder	UVD+	UVD 3

🔌

Power & Dimensions

The Radeon HD 3870 X2 draws 286W versus the Radeon HD 7620G + 8670M Dual's 50W — a 140.5% difference. The Radeon HD 7620G + 8670M Dual is more power-efficient. Recommended PSU: 550W (Radeon HD 3870 X2) vs 350W (Radeon HD 7620G + 8670M Dual). Power connectors: 1x 6-pin + 1x 8-pin vs 1x 6-pin. Card length: 267mm vs 1mm, occupying 2 vs 0 slots.

Feature	Radeon HD 3870 X2	Radeon HD 7620G + 8670M Dual
TDP	286W	50W-83%
Recommended PSU	550W	350W-36%
Power Connector	1x 6-pin + 1x 8-pin	1x 6-pin
Length	267mm	1mm
Slots	2	0-100%
Perf/Watt	2.1	11.5+448%

💰

Value Analysis

At launch, the Radeon HD 3870 X2 came in at $449, while the Radeon HD 7620G + 8670M Dual launched at $150. On MSRP, Radeon HD 7620G + 8670M Dual was 66.6% cheaper ($299 less). Performance per dollar on MSRP (G3D Mark / MSRP): 1.3 (Radeon HD 3870 X2) vs 3.8 (Radeon HD 7620G + 8670M Dual) — the Radeon HD 7620G + 8670M Dual offers 192.3% better value. The newer card here is Radeon HD 7620G + 8670M Dual (2013 vs 2008).

Feature	Radeon HD 3870 X2	Radeon HD 7620G + 8670M Dual
MSRP	$449	$150-67%
Performance per Dollar	1.3	3.8+192%
Codename	R700	—
Release	August 12 2008	August 1 2013
Ranking	#796	#881

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