Radeon HD 6520G vs Radeon HD 7420G

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 6520G vs Radeon HD 7420G 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 6520G vs Radeon HD 7420G: 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 6520G

2010

Why buy it

✅Draws 200W instead of 375W, a 175W reduction.

Trade-offs

❌2010 hardware with 512 MB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.

Radeon HD 7420G

2013

Why buy it

✅More future proof: GCN 1.0 (2012−2020) on 28nm with a newer platform for upcoming games.

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.
❌87.5% higher power demand at 375W vs 200W.

Quick Answers

Which GPU is faster for gaming right now?

Radeon HD 7420G is the faster gaming card right now based on the synthetic data we have. It leads by 5.3% in PassMark G3D (316 vs 300), which is the best performance signal available in this matchup.

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

Radeon HD 6520G 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 7420G makes the most sense to buy today. It is priced the same on MSRP at $40 vs $40, and it leads G3D-per-dollar by 5.3% (7.9 vs 7.5), so the value case lines up with the gaming result. If you are mainly targeting 1080p and some 1440p, Radeon HD 7420G is the easier value choice. If you care more about 1080p and some 1440p headroom, Radeon HD 6520G has the stronger long-term case.

Radeon HD 6520G vs Radeon HD 7420G Technical Specifications

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

Radeon HD 6520G

The Radeon HD 6520G 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: 300 points. Launch price was $299.

Radeon HD 7420G

The Radeon HD 7420G is manufactured by AMD. It was released in April 24 2013. It features the GCN 1.0 architecture. The core clock ranges from 950 MHz to 1000 MHz. It has 2048 ×2 shading units. The thermal design power (TDP) is 375W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 316 points. Launch price was $999.

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Graphics Performance

In G3D Mark, the Radeon HD 6520G scores 300 versus the Radeon HD 7420G's 316 — the Radeon HD 7420G leads by 5.3%. The Radeon HD 6520G is built on TeraScale 3 while the Radeon HD 7420G uses GCN 1.0, both on 40 nm vs 28 nm. Shader units: 1,408 (Radeon HD 6520G) vs 2,048 (Radeon HD 7420G). Raw compute: 2.253 TFLOPS (Radeon HD 6520G) vs 4.096 TFLOPS ×2 (Radeon HD 7420G). Boost clocks: 800 MHz vs 1000 MHz.

Feature	Radeon HD 6520G	Radeon HD 7420G
G3D Mark Score	300	316+5%
Architecture	TeraScale 3	GCN 1.0
Process Node	40 nm	28 nm
Shading Units	1408	2048 ×2+45%
Compute (TFLOPS)	2.253 TFLOPS	4.096 TFLOPS ×2+82%
Boost Clock	800 MHz	1000 MHz+25%
ROPs	32	32 ×2
TMUs	88	128 ×2+45%
L1 Cache	352 KB	512 KB+45%
L2 Cache	512 KB	768 KB+50%
Frame Generation	FSR upscaling	FSR upscaling

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Advanced Features (DLSS/FSR)

Feature	Radeon HD 6520G	Radeon HD 7420G
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)

Both cards ship with 512 MB of GDDR5. Memory bus width is 128-bit on the Radeon HD 6520G and 128-bit on the Radeon HD 7420G. L2 Cache: 512 KB (Radeon HD 6520G) vs 768 KB (Radeon HD 7420G) — the Radeon HD 7420G has significantly larger on-die cache to reduce VRAM reliance.

Feature	Radeon HD 6520G	Radeon HD 7420G
VRAM Capacity	0.5 GB	0.5 GB
Memory Type	GDDR5	GDDR5
Memory Bandwidth	Unknown	Unknown
Bus Width	128-bit	128-bit
L2 Cache	512 KB	768 KB+50%

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Power & Dimensions

The Radeon HD 6520G draws 200W versus the Radeon HD 7420G's 375W — a 60.9% difference. The Radeon HD 6520G is more power-efficient. Recommended PSU: 350W (Radeon HD 6520G) vs 350W (Radeon HD 7420G). Power connectors: 1x 6-pin vs 1x 6-pin.

Feature	Radeon HD 6520G	Radeon HD 7420G
TDP	200W-47%	375W
Recommended PSU	350W	350W
Power Connector	1x 6-pin	1x 6-pin
Perf/Watt	1.5+87%	0.8

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Value Analysis

At launch, the Radeon HD 6520G came in at $40, while the Radeon HD 7420G launched at $40. Performance per dollar on MSRP (G3D Mark / MSRP): 7.5 (Radeon HD 6520G) vs 7.9 (Radeon HD 7420G) — the Radeon HD 7420G offers 5.3% better value. The newer card here is Radeon HD 7420G (2013 vs 2010).

Feature	Radeon HD 6520G	Radeon HD 7420G
MSRP	$40	$40
Performance per Dollar	7.5	7.9+5%
Codename	Cayman	Malta
Release	December 14 2010	April 24 2013
Ranking	#623	#412

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