Radeon HD 7640G + HD 7700M Dual vs Radeon R6 M255DX

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 7640G + HD 7700M Dual vs Radeon R6 M255DX 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 7640G + HD 7700M Dual vs Radeon R6 M255DX: 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 7640G + HD 7700M Dual

2013

Why buy it

✅Delivers 100+% more G3D Mark for each dollar spent, at 3.9 vs 0 G3D/$ ($150 MSRP vs Unknown MSRP).

Trade-offs

❌Lower average FPS than Radeon R6 M255DX across 50 tracked games in our benchmark data.
❌2013 hardware with 512 MB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌66.7% higher power demand at 50W vs 30W.

Radeon R6 M255DX

2014

Why buy it

✅7.9% more average FPS across 50 tracked games in our benchmark data.
✅Draws 30W instead of 50W, a 20W reduction.
✅More future proof: GCN (2012−2015) on 28nm with a newer platform for upcoming games.

Trade-offs

❌2014 hardware with 512 MB 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 3.9 G3D/$ (Unknown MSRP vs $150 MSRP).

Quick Answers

Which GPU is faster for gaming right now?

Radeon R6 M255DX is the faster gaming card right now. In our data, it leads by 7.9% in average FPS across 50 tracked games in our benchmark data and by 2.7% in PassMark G3D (605 vs 589), so the answer here is pretty clean.

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

Radeon HD 7640G + HD 7700M Dual 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 7640G + HD 7700M Dual makes the most sense today based on the pricing and value data we have for this matchup. Radeon R6 M255DX still makes more sense if max raw gaming performance matters more than value.

Radeon HD 7640G + HD 7700M Dual vs Radeon R6 M255DX Technical Specifications

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

Radeon HD 7640G + HD 7700M Dual

The Radeon HD 7640G + HD 7700M 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: 589 points.

Radeon R6 M255DX

The Radeon R6 M255DX is manufactured by AMD. It was released in June 4 2014. It features the GCN architecture. It has 896 shading units. The thermal design power (TDP) is 30W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 605 points.

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Graphics Performance

The Radeon HD 7640G + HD 7700M Dual scores 589 and the Radeon R6 M255DX reaches 605 in the G3D Mark benchmark — just a 2.7% difference, making them near-identical in rasterization performance. Shader units: 768 (Radeon HD 7640G + HD 7700M Dual) vs 896 (Radeon R6 M255DX).

Feature	Radeon HD 7640G + HD 7700M Dual	Radeon R6 M255DX
G3D Mark Score	589	605+3%
Process Node	28 nm	28 nm
Shading Units	768	896+17%
Frame Generation	FSR upscaling	FSR upscaling

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Advanced Features (DLSS/FSR)

Feature	Radeon HD 7640G + HD 7700M Dual	Radeon R6 M255DX
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 128-bit on the Radeon HD 7640G + HD 7700M Dual and 64-bit on the Radeon R6 M255DX.

Feature	Radeon HD 7640G + HD 7700M Dual	Radeon R6 M255DX
VRAM Capacity	0.5 GB	0.5 GB
Memory Type	GDDR5	GDDR5
Bus Width	128-bit+100%	64-bit

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Power & Dimensions

The Radeon HD 7640G + HD 7700M Dual draws 50W versus the Radeon R6 M255DX's 30W — a 50% difference. The Radeon R6 M255DX is more power-efficient. Recommended PSU: 350W (Radeon HD 7640G + HD 7700M Dual) vs 350W (Radeon R6 M255DX). Power connectors: 1x 6-pin vs PCIe-powered.

Feature	Radeon HD 7640G + HD 7700M Dual	Radeon R6 M255DX
TDP	50W	30W-40%
Recommended PSU	350W	350W
Power Connector	1x 6-pin	PCIe-powered
Length	—	1mm
Slots	—	0
Perf/Watt	11.8	20.2+71%

💰

Value Analysis

At launch, the Radeon HD 7640G + HD 7700M Dual came in at $150, while the Radeon R6 M255DX launched at $0. On MSRP, Radeon R6 M255DX was 100+% cheaper ($150 less). Performance per dollar on MSRP (G3D Mark / MSRP): 3.9 (Radeon HD 7640G + HD 7700M Dual) vs Infinity (Radeon R6 M255DX) — the Radeon R6 M255DX offers Infinity% better value. The newer card here is Radeon R6 M255DX (2014 vs 2013).

Feature	Radeon HD 7640G + HD 7700M Dual	Radeon R6 M255DX
MSRP	$150	$0-100%
Performance per Dollar	3.9	Infinity
Release	August 1 2013	June 4 2014
Ranking	#881	#800

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