RadeonT 660M vs Radeon HD 6870

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 RadeonT 660M is positioned at rank #226 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 RadeonT 660M

#53

Radeon RX 6850M XT

MSRP: $800|Avg: $800

97%

#216

Radeon RX 550X (móvel)

MSRP: $35|Avg: $35

484%

#218

GeForce GTX 1070 with Max-Q Design

MSRP: N/A|Avg: $150

439%

#219

GeForce GTX 1060 with Max-Q Design

MSRP: N/A|Avg: $100

438%

#223

GeForce GTX 1050 (Mobile)

MSRP: N/A|Avg: $50

398%

#224

Radeon RX 6300

MSRP: $60|Avg: $40

395%

#226

RadeonT 660M

MSRP: N/A|Avg: N/A

100%

#228

GeForce GT 750M Mac Edition

MSRP: $149|Avg: $40

99%

#230

Maxwell GPU Surface Book

MSRP: $150|Avg: $75

98%

#235

Radeon RX 540

MSRP: $99|Avg: $40

96%

#236

Radeon HD 6750M

MSRP: N/A|Avg: $60

95%

#237

Radeon HD 7570M

MSRP: N/A|Avg: $15

94%

#239

GeForce MX570 A

MSRP: $300|Avg: $300

92%

#240

Arc Graphics 130T

MSRP: $300|Avg: $250

92%

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

⚠️ Generational Difference

The RadeonT 660M is significantly newer (2023 vs 2010). The RadeonT 660M likely supports modern features like Ray Tracing, Tensor Cores, and DLSS/FSR upscaling, which act as force multipliers for performance. The Radeon HD 6870 lacks this hardware feature set, limiting its longevity in modern titles despite any raw power similarities.

🚀 Performance Leadership

The RadeonT 660M is the superior choice for raw performance. It leads with a 0.7% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon HD 6870.

Insight	RadeonT 660M	Radeon HD 6870
Performance	✅Leading raw performance (+0.7%)	❌Lower raw frame rates (-0.7%)
Longevity	RDNA 2.0 (2020−2025) (6nm)	🛑Obsolete Architecture (2010 / TeraScale 2 (2009−2015))
Ecosystem	Supports FSR Upscaling	Supports FSR Upscaling
VRAM	❌ Less VRAM capacity	✅ More VRAM (+0%)
Efficiency	💡 Excellent Perf/Watt	⚡ Higher Power Consumption
Case Fit	—	Standard Size (247mm)

💎 Value Proposition

While current pricing data is unavailable, the RadeonT 660M 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.

RadeonT 660M Benchmark Check

Radeon HD 6870 Benchmark Check

Technical Specifications

Side-by-side comparison of RadeonT 660M and Radeon HD 6870

RadeonT 660M

The RadeonT 660M is manufactured by AMD. It was released in January 3 2023. It features the RDNA 2.0 architecture. The core clock ranges from 1500 MHz to 1900 MHz. It has 384 shading units. The thermal design power (TDP) is 40W. Manufactured using 6 nm process technology. It features 6 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 2,221 points.

Radeon HD 6870

The Radeon HD 6870 is manufactured by AMD. It was released in October 21 2010. It features the TeraScale 2 architecture. The boost clock speed is 900 MHz. It has 1120 shading units. The thermal design power (TDP) is 151W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 2,206 points. Launch price was $239.

⚡

Graphics Performance

The RadeonT 660M scores 2,221 and the Radeon HD 6870 reaches 2,206 in the G3D Mark benchmark — just a 0.7% difference, making them near-identical in rasterization performance. The RadeonT 660M is built on RDNA 2.0 while the Radeon HD 6870 uses TeraScale 2, both on 6 nm vs 40 nm. Shader units: 384 (RadeonT 660M) vs 1,120 (Radeon HD 6870). Raw compute: 1.459 TFLOPS (RadeonT 660M) vs 2.016 TFLOPS (Radeon HD 6870). Boost clocks: 1900 MHz vs 900 MHz.

Feature	RadeonT 660M	Radeon HD 6870
G3D Mark Score	2,221	2,206
Architecture	RDNA 2.0	TeraScale 2
Process Node	6 nm	40 nm
Shading Units	384	1120+192%
Compute (TFLOPS)	1.459 TFLOPS	2.016 TFLOPS+38%
Boost Clock	1900 MHz+111%	900 MHz
ROPs	16	32+100%
TMUs	24	56+133%
L1 Cache	128 KB	224 KB+75%
L2 Cache	2 MB+300%	0.5 MB

✨

Advanced Features (DLSS/FSR)

Feature	RadeonT 660M	Radeon HD 6870
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)

Both cards feature 2 GB of GDDR5. Bus width: 64-bit vs 128-bit. L2 Cache: 2 MB (RadeonT 660M) vs 0.5 MB (Radeon HD 6870) — the RadeonT 660M has significantly larger on-die cache to reduce VRAM reliance.

Feature	RadeonT 660M	Radeon HD 6870
VRAM Capacity	2 GB	2 GB
Memory Type	GDDR5	GDDR5
Bus Width	64-bit	128-bit+100%
L2 Cache	2 MB+300%	0.5 MB

🖥️

Display & API Support

DirectX support: 12 (12_2) (RadeonT 660M) vs 11.0 (Radeon HD 6870). Vulkan: 1.3 vs N/A. OpenGL: 4.6 vs 4.4. Maximum simultaneous displays: 3 vs 6.

Feature	RadeonT 660M	Radeon HD 6870
DirectX	12 (12_2)+9%	11.0
Vulkan	1.3	N/A
OpenGL	4.6+5%	4.4
Max Displays	3	6+100%

🎬

Media & Encoding

Hardware encoder: VCN 3.0 (RadeonT 660M) vs None (Radeon HD 6870). Decoder: VCN 3.0 vs UVD 3.0. Supported codecs: H.264,H.265,VP9,AV1,JPEG (RadeonT 660M) vs MPEG-2,VC-1,H.264,MPEG-4,MVC (Radeon HD 6870).

Feature	RadeonT 660M	Radeon HD 6870
Encoder	VCN 3.0	None
Decoder	VCN 3.0	UVD 3.0
Codecs	H.264,H.265,VP9,AV1,JPEG	MPEG-2,VC-1,H.264,MPEG-4,MVC

🔌

Power & Dimensions

The RadeonT 660M draws 40W versus the Radeon HD 6870's 151W — a 116.2% difference. The RadeonT 660M is more power-efficient. Recommended PSU: 350W (RadeonT 660M) vs 500W (Radeon HD 6870). Power connectors: PCIe-powered vs 2x 6-pin.

Feature	RadeonT 660M	Radeon HD 6870
TDP	40W-74%	151W
Recommended PSU	350W-30%	500W
Power Connector	PCIe-powered	2x 6-pin
Length	—	247mm
Height	—	111mm
Slots	—	2
Temp (Load)	—	85
Perf/Watt	55.5+280%	14.6