Radeon R9 280 vs Radeon HD 7990

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 Radeon HD 7990 is the superior choice for raw performance. It leads with a 0.6% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon R9 280.

Insight	Radeon R9 280	Radeon HD 7990
Performance	❌Lower raw frame rates (-0.6%)	✅Leading raw performance (+0.6%)
Longevity	🛑Obsolete Architecture (2014 / GCN 1.0 (2012−2020))	🛑Obsolete Architecture (2013 / GCN 1.0 (2012−2020))
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 (305mm)

💎 Value Proposition

The Radeon R9 280 offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the Radeon R9 280 holds the technical lead. Priced at $40 (vs $999), it costs 96% less, resulting in a 2382.2% higher cost efficiency score.

Insight	Radeon R9 280	Radeon HD 7990
Cost Efficiency	✅Better overall value (+2382.2%)	❌Lower cost efficiency
Upfront Cost	✅More affordable ($40)	⚠️Higher upfront cost ($999)

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 R9 280 Benchmark Check

Radeon HD 7990 Benchmark Check

Technical Specifications

Side-by-side comparison of Radeon R9 280 and Radeon HD 7990

Radeon R9 280

The Radeon R9 280 is manufactured by AMD. It was released in March 4 2014. It features the GCN 1.0 architecture. The boost clock speed is 933 MHz. It has 1792 shading units. The thermal design power (TDP) is 200W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 5,532 points. Launch price was $279.

Radeon HD 7990

The Radeon HD 7990 is manufactured by AMD. It was released in April 24 2013. It features the GCN 1.0 architecture. The core clock ranges from 950 MHz to 1000 MHz. It has 2048 ×2 shading units. The thermal design power (TDP) is 375W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 5,566 points. Launch price was $999.

⚡

Graphics Performance

The Radeon R9 280 scores 5,532 and the Radeon HD 7990 reaches 5,566 in the G3D Mark benchmark — just a 0.6% difference, making them near-identical in rasterization performance. The Radeon R9 280 is built on GCN 1.0 while the Radeon HD 7990 uses GCN 1.0, both on a 28 nm process. Shader units: 1,792 (Radeon R9 280) vs 2,048 (Radeon HD 7990). Raw compute: 3.344 TFLOPS (Radeon R9 280) vs 4.096 TFLOPS ×2 (Radeon HD 7990). Boost clocks: 933 MHz vs 1000 MHz.

Feature	Radeon R9 280	Radeon HD 7990
G3D Mark Score	5,532	5,566
Architecture	GCN 1.0	GCN 1.0
Process Node	28 nm	28 nm
Shading Units	1792	2048 ×2+14%
Compute (TFLOPS)	3.344 TFLOPS	4.096 TFLOPS ×2+22%
Boost Clock	933 MHz	1000 MHz+7%
ROPs	32	32 ×2
TMUs	112	128 ×2+14%
L1 Cache	448 KB	512 KB+14%
L2 Cache	768 KB	768 KB

✨

Advanced Features (DLSS/FSR)

Feature	Radeon R9 280	Radeon HD 7990
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 3 GB of GDDR5. Memory bandwidth: 240 GB/s (Radeon R9 280) vs 288 GB/s x2 (Radeon HD 7990) — a 1100.8% advantage for the Radeon HD 7990. Bus width: 384-bit vs 384-bit x2.

Feature	Radeon R9 280	Radeon HD 7990
VRAM Capacity	3 GB	3 GB
Memory Type	GDDR5	GDDR5
Memory Bandwidth	240 GB/s	288 GB/s x2+20%
Bus Width	384-bit	384-bit x2
L2 Cache	768 KB	768 KB

🔌

Power & Dimensions

The Radeon R9 280 draws 200W versus the Radeon HD 7990's 375W — a 60.9% difference. The Radeon R9 280 is more power-efficient. Recommended PSU: 500W (Radeon R9 280) vs 750W (Radeon HD 7990). Power connectors: 6-pin + 8-pin vs 2x 8-pin.

Feature	Radeon R9 280	Radeon HD 7990
TDP	200W-47%	375W
Recommended PSU	500W-33%	750W
Power Connector	6-pin + 8-pin	2x 8-pin
Length	—	305mm
Height	—	111mm
Slots	—	2
Temp (Load)	—	85
Perf/Watt	27.7+87%	14.8

💰

Value Analysis

The Radeon R9 280 launched at $279 MSRP and currently averages $40, while the Radeon HD 7990 launched at $999 and now averages $999. The Radeon R9 280 costs 96% less ($959 savings) at current market prices. Performance per dollar (G3D Mark / price): 138.3 (Radeon R9 280) vs 5.6 (Radeon HD 7990) — the Radeon R9 280 offers 2369.6% better value. The Radeon R9 280 is the newer GPU (2014 vs 2013).