GeForce GTX 660 vs Radeon HD 7800-serie

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. 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

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 GeForce GTX 660 is the superior choice for raw performance. It leads with a 0.3% higher G3D Mark score and 50% more VRAM (3 GB vs 2 GB). This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon HD 7800-serie.

Insight	GeForce GTX 660	Radeon HD 7800-serie
Performance	✅Leading raw performance (+0.3%)	❌Lower raw frame rates (-0.3%)
Longevity	🛑Obsolete Architecture (2012 / Kepler (2012−2018))	🛑Obsolete Architecture (2012 / GCN 1.0 (2012−2020))
Ecosystem	Supports FSR Upscaling	Supports FSR Upscaling
VRAM	✅ More VRAM (+50%)	❌ Less VRAM capacity
Efficiency	💡 Excellent Perf/Watt	⚡ Higher Power Consumption
Case Fit	📏 Compact / SFF Friendly	—

💎 Value Proposition

The GeForce GTX 660 offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the GeForce GTX 660 holds the technical lead. Priced at $15 (vs $60), it costs 75% less, resulting in a 301.1% higher cost efficiency score.

Insight	GeForce GTX 660	Radeon HD 7800-serie
Cost Efficiency	✅Better overall value (+301.1%)	❌Lower cost efficiency
Upfront Cost	✅More affordable ($15)	⚠️Higher upfront cost ($60)

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.

GeForce GTX 660 Benchmark Check

Radeon HD 7800-serie Benchmark Check

Technical Specifications

Side-by-side comparison of GeForce GTX 660 and Radeon HD 7800-serie

GeForce GTX 660

The GeForce GTX 660 is manufactured by NVIDIA. It was released in September 6 2012. It features the Kepler architecture. The core clock ranges from 980 MHz to 1033 MHz. It has 960 shading units. The thermal design power (TDP) is 140W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 4,040 points. Launch price was $229.

Radeon HD 7800-serie

The Radeon HD 7800-serie is manufactured by AMD. It was released in March 5 2012. It features the GCN 1.0 architecture. The core clock speed is 1000 MHz. It has 1280 shading units. The thermal design power (TDP) is 200W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 4,029 points. Launch price was $349.

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Graphics Performance

The GeForce GTX 660 scores 4,040 and the Radeon HD 7800-serie reaches 4,029 in the G3D Mark benchmark — just a 0.3% difference, making them near-identical in rasterization performance. The GeForce GTX 660 is built on Kepler while the Radeon HD 7800-serie uses GCN 1.0, both on a 28 nm process. Shader units: 960 (GeForce GTX 660) vs 1,280 (Radeon HD 7800-serie). Raw compute: 1.981 TFLOPS (GeForce GTX 660) vs 2.56 TFLOPS (Radeon HD 7800-serie).

Feature	GeForce GTX 660	Radeon HD 7800-serie
G3D Mark Score	4,040	4,029
Architecture	Kepler	GCN 1.0
Process Node	28 nm	28 nm
Shading Units	960	1280+33%
Compute (TFLOPS)	1.981 TFLOPS	2.56 TFLOPS+29%
ROPs	24	32+33%
TMUs	80	80
L1 Cache	80 KB	320 KB+300%
L2 Cache	384 KB	512 KB+33%

✨

Advanced Features (DLSS/FSR)

Feature	GeForce GTX 660	Radeon HD 7800-serie
Upscaling Tech	FSR 2.1 (Compatible)	FSR 1.0 (Software)
Frame Generation	FSR 3 (Compatible)	Not Supported
Ray Reconstruction	No	No
Low Latency	Standard	AMD Anti-Lag

💾

Video Memory (VRAM)

The GeForce GTX 660 comes with 3 GB of VRAM, while the Radeon HD 7800-serie has 2 GB. The GeForce GTX 660 offers 50% more capacity, crucial for higher resolutions and texture-heavy games. Memory bandwidth: 144.2 GB/s (GeForce GTX 660) vs 153.6 GB/s (Radeon HD 7800-serie) — a 6.5% advantage for the Radeon HD 7800-serie. Bus width: 192-bit vs 256-bit. L2 Cache: 384 KB (GeForce GTX 660) vs 512 KB (Radeon HD 7800-serie) — the Radeon HD 7800-serie has significantly larger on-die cache to reduce VRAM reliance.

Feature	GeForce GTX 660	Radeon HD 7800-serie
VRAM Capacity	3 GB+50%	2 GB
Memory Type	GDDR5	GDDR5
Memory Bandwidth	144.2 GB/s	153.6 GB/s+7%
Bus Width	192-bit	256-bit+33%
L2 Cache	384 KB	512 KB+33%

🔌

Power & Dimensions

The GeForce GTX 660 draws 140W versus the Radeon HD 7800-serie's 200W — a 35.3% difference. The GeForce GTX 660 is more power-efficient. Recommended PSU: 450W (GeForce GTX 660) vs 500W (Radeon HD 7800-serie). Power connectors: 1x 6-pin vs 2x 6-pin.

Feature	GeForce GTX 660	Radeon HD 7800-serie
TDP	140W-30%	200W
Recommended PSU	450W-10%	500W
Power Connector	1x 6-pin	2x 6-pin
Length	241mm	—
Slots	2	—
Perf/Watt	28.9+44%	20.1

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Value Analysis

The GeForce GTX 660 launched at $229 MSRP and currently averages $15, while the Radeon HD 7800-serie launched at $349 and now averages $60. The GeForce GTX 660 costs 75% less ($45 savings) at current market prices. Performance per dollar (G3D Mark / price): 269.3 (GeForce GTX 660) vs 67.2 (Radeon HD 7800-serie) — the GeForce GTX 660 offers 300.7% better value.