Radeon HD 7770M vs Radeon R9 255

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.

Value Upgrade Path

This is the official ChipVERSUS Value Rating, comparing raw performance (G3D Mark) per dollar. The Radeon HD 7770M is positioned at rank #124 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.

MSRP is the manufacturer's suggested retail price.•
Avg price is the current average price collected from markets across the web.

Performance Per Dollar Radeon HD 7770M

#114

Radeon RX 550X (móvel)

MSRP: $35|Avg: $35

290%

#116

GeForce GTX 1070 with Max-Q Design

MSRP: N/A|Avg: $150

262%

#117

GeForce GTX 1060 with Max-Q Design

MSRP: N/A|Avg: $100

262%

#121

GeForce GTX 1050 (Mobile)

MSRP: N/A|Avg: $50

238%

#122

Radeon RX 6300

MSRP: $60|Avg: $40

236%

#124

Radeon HD 7770M

MSRP: N/A|Avg: N/A

100%

#125

GeForce GT 550M

MSRP: N/A|Avg: $30

100%

#131

GeForce GT 335M

MSRP: N/A|Avg: $25

98%

#139

Iris Xe MAX Graphics

MSRP: $55|Avg: $40

96%

Based on actual market prices and performance benchmarks.

Performance Per Dollar

Based on actual market prices and performance benchmarks.

Performance Comparison

About G3D Mark

🏆 Chipversus Verdict

🚀 Performance Leadership

The Radeon R9 255 is the superior choice for raw performance. It leads with a 0.1% higher G3D Mark score and 300% more VRAM (2 GB vs 512 MB). This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon HD 7770M.

Insight	Radeon HD 7770M	Radeon R9 255
Performance	❌Lower raw frame rates (-0.1%)	✅Leading raw performance (+0.1%)
Longevity	🛑Obsolete Architecture (2012 / GCN 1.0 (2012−2020))	🛑Obsolete Architecture (2014 / GCN 3.0 (2014−2019))
Ecosystem	Supports FSR Upscaling	Supports FSR Upscaling
VRAM	❌ Less VRAM capacity	✅ More VRAM (+300%)
Efficiency	💡 Excellent Perf/Watt	⚡ Higher Power Consumption
Case Fit	—	—

💎 Value Proposition

While current pricing data is unavailable, the Radeon R9 255 remains the clear technical winner. Check real-time availability to determine if the performance gap justifies the market price.

Performance Check

Real-world benchmarks and performance projections based on comprehensive hardware analysis and comparative metrics. Values represent expected performance on High/Ultra settings at 1080p, 1440p, and 4K. Modeled using a Ryzen 7 7800X3D reference profile to minimize specific CPU bottlenecks.

Note: Performance behavior can vary per game. Specific architectures may perform better or worse depending on game engine optimizations and API implementation.

Radeon HD 7770M Benchmark Check

Radeon R9 255 Benchmark Check

Technical Specifications

Side-by-side comparison of Radeon HD 7770M and Radeon R9 255

Radeon HD 7770M

The Radeon HD 7770M is manufactured by AMD. It was released in April 24 2012. It features the GCN 1.0 architecture. The core clock speed is 675 MHz. It has 512 shading units. The thermal design power (TDP) is 32W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,500 points.

Radeon R9 255

The Radeon R9 255 is manufactured by AMD. It was released in September 2 2014. It features the GCN 3.0 architecture. The core clock speed is 918 MHz. It has 1792 shading units. The thermal design power (TDP) is 190W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,501 points. Launch price was $249.

⚡

Graphics Performance

The Radeon HD 7770M scores 1,500 and the Radeon R9 255 reaches 1,501 in the G3D Mark benchmark — just a 0.1% difference, making them near-identical in rasterization performance. The Radeon HD 7770M is built on GCN 1.0 while the Radeon R9 255 uses GCN 3.0, both on a 28 nm process. Shader units: 512 (Radeon HD 7770M) vs 1,792 (Radeon R9 255). Raw compute: 0.6912 TFLOPS (Radeon HD 7770M) vs 3.29 TFLOPS (Radeon R9 255).

Feature	Radeon HD 7770M	Radeon R9 255
G3D Mark Score	1,500	1,501
Architecture	GCN 1.0	GCN 3.0
Process Node	28 nm	28 nm
Shading Units	512	1792+250%
Compute (TFLOPS)	0.6912 TFLOPS	3.29 TFLOPS+376%
ROPs	16	32+100%
TMUs	32	112+250%
L1 Cache	128 KB	448 KB+250%
L2 Cache	256 KB	512 KB+100%

✨

Advanced Features (DLSS/FSR)

Feature	Radeon HD 7770M	Radeon R9 255
Upscaling Tech	FSR 1.0 (Software)	FSR 1.0 (Software)
Frame Generation	Not Supported	Not Supported
Ray Reconstruction	No	No
Low Latency	AMD Anti-Lag	AMD Anti-Lag

💾

Video Memory (VRAM)

The Radeon HD 7770M comes with 512 MB of VRAM, while the Radeon R9 255 has 2 GB. The Radeon R9 255 offers 300% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: System vs 128-bit. L2 Cache: 256 KB (Radeon HD 7770M) vs 512 KB (Radeon R9 255) — the Radeon R9 255 has significantly larger on-die cache to reduce VRAM reliance.

Feature	Radeon HD 7770M	Radeon R9 255
VRAM Capacity	0.5 GB	2 GB+300%
Memory Type	Shared	GDDR5
Memory Bandwidth	System	Unknown
Bus Width	System	128-bit
L2 Cache	256 KB	512 KB+100%

🔌

Power & Dimensions

The Radeon HD 7770M draws 32W versus the Radeon R9 255's 190W — a 142.3% difference. The Radeon HD 7770M is more power-efficient. Recommended PSU: 350W (Radeon HD 7770M) vs 400W (Radeon R9 255). Power connectors: 1x 6-pin vs 1x 6-pin.