Radeon 820M vs Radeon HD 7770

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 820M vs Radeon HD 7770 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 820M vs Radeon HD 7770: 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 820M

2024

Why buy it

✅101.2% more average FPS across 30 tracked games in our benchmark data.
✅Better long-term bet: RDNA 3+ (2024) on 4nm gives it a newer hardware base for upcoming games.
✅Draws 30W instead of 80W, a 50W reduction.

Trade-offs

❌Lower G3D Mark per dollar, at 0 vs 13.7 G3D/$ (Unknown MSRP vs $159 MSRP).

Radeon HD 7770

2012

Why buy it

✅Delivers 100+% more G3D Mark for each dollar spent, at 13.7 vs 0 G3D/$ ($159 MSRP vs Unknown MSRP).

Trade-offs

❌Lower average FPS than Radeon 820M across 30 tracked games in our benchmark data.
❌2012 hardware with 2 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌166.7% higher power demand at 80W vs 30W.

Quick Answers

Which GPU is faster for gaming right now?

Radeon 820M is the faster gaming card right now. In our data, it leads by 101.2% in average FPS across 30 tracked games in our benchmark data. PassMark G3D leans toward Radeon HD 7770 instead at 2,173 vs 2,143, 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 820M is the safer long-term pick for 2026 and beyond. The case is simple: a 4nm process instead of 28nm and a newer 2024 generation instead of 2012. That makes it the less risky pick as game demands keep moving.

Which GPU is the better buy today?

Radeon HD 7770 makes the most sense today based on the pricing and value data we have for this matchup. If you are mainly targeting 1080p and some 1440p, Radeon HD 7770 is the easier value choice. If you care more about 1080p and some 1440p headroom, Radeon 820M has the stronger long-term case.

Radeon 820M vs Radeon HD 7770 Technical Specifications

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

Radeon 820M

The Radeon 820M is manufactured by AMD. It was released in June 2 2024. It features the RDNA 3+ architecture. The boost clock speed is 2900 MHz. It has 128 shading units. The thermal design power (TDP) is 30W. Manufactured using 4 nm process technology. G3D Mark benchmark score: 2,143 points.

Radeon HD 7770

The Radeon HD 7770 is manufactured by AMD. It was released in February 15 2012. It features the GCN 1.0 architecture. The core clock speed is 1000 MHz. It has 640 shading units. The thermal design power (TDP) is 80W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 2,173 points. Launch price was $159.

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Graphics Performance

The Radeon 820M scores 2,143 and the Radeon HD 7770 reaches 2,173 in the G3D Mark benchmark — just a 1.4% difference, making them near-identical in rasterization performance. The Radeon 820M is built on RDNA 3+ while the Radeon HD 7770 uses GCN 1.0, both on 4 nm vs 28 nm. Shader units: 128 (Radeon 820M) vs 640 (Radeon HD 7770).

Feature	Radeon 820M	Radeon HD 7770
G3D Mark Score	2,143	2,173+1%
Architecture	RDNA 3+	GCN 1.0
Process Node	4 nm	28 nm
Shading Units	128	640+400%
Frame Generation	FSR upscaling + RSR	FSR upscaling

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Advanced Features (DLSS/FSR)

Feature	Radeon 820M	Radeon HD 7770
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 2 GB of video memory. Memory bus width is System on the Radeon 820M and 128-bit on the Radeon HD 7770.

Feature	Radeon 820M	Radeon HD 7770
VRAM Capacity	2 GB	2 GB
Memory Type	Shared	GDDR5
Memory Bandwidth	System	72 GB/s
Bus Width	System	128-bit

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Display & API Support

DirectX support: 12 Ultimate (Radeon 820M) vs 12_0 (Radeon HD 7770). Maximum simultaneous displays: 4 vs 4.

Feature	Radeon 820M	Radeon HD 7770
DirectX	12 Ultimate	12_0
Max Displays	4	4

🎬

Media & Encoding

Hardware encoder: VCN 4.0 (Radeon 820M) vs VCE 1.0 (Radeon HD 7770). Decoder: VCN 4.0 vs UVD 3.1. Supported codecs: H.264,H.265,AV1,VP9 (Radeon 820M) vs H.264 (Radeon HD 7770).

Feature	Radeon 820M	Radeon HD 7770
Encoder	VCN 4.0	VCE 1.0
Decoder	VCN 4.0	UVD 3.1
Codecs	H.264,H.265,AV1,VP9	H.264

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Power & Dimensions

The Radeon 820M draws 30W versus the Radeon HD 7770's 80W — a 90.9% difference. The Radeon 820M is more power-efficient. Recommended PSU: 350W (Radeon 820M) vs 450W (Radeon HD 7770). Power connectors: PCIe-powered vs 1x 6-pin. Card length: 0mm vs 210mm, occupying 0 vs 2 slots.

Feature	Radeon 820M	Radeon HD 7770
TDP	30W-63%	80W
Recommended PSU	350W-22%	450W
Power Connector	PCIe-powered	1x 6-pin
Length	0mm	210mm
Height	0mm	—
Slots	0-100%	2
Temp (Load)	80	—
Perf/Watt	71.4+163%	27.2

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Value Analysis

The newer card here is Radeon 820M (2024 vs 2012).

Feature	Radeon 820M	Radeon HD 7770
MSRP	—	$159
Codename	Krackan Point	Cape Verde
Release	June 2 2024	February 15 2012
Ranking	#669	#664

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