Radeon HD 8990 vs Radeon HD 7970 / R9 280X

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 7970 / R9 280X 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 8990.

Insight	Radeon HD 8990	Radeon HD 7970 / R9 280X
Performance	❌Lower raw frame rates (-0.7%)	✅Leading raw performance (+0.7%)
Longevity	🛑Obsolete Architecture (2013 / 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	⚡ Higher Power Consumption	💡 Excellent Perf/Watt
Case Fit	—	Standard Size (275mm)

💎 Value Proposition

The Radeon HD 7970 / R9 280X offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the Radeon HD 7970 / R9 280X holds the technical lead. Priced at $40 (vs $999), it costs 96% less, resulting in a 2413.8% higher cost efficiency score.

Insight	Radeon HD 8990	Radeon HD 7970 / R9 280X
Cost Efficiency	❌Lower cost efficiency	✅Better overall value (+2413.8%)
Upfront Cost	⚠️Higher upfront cost ($999)	✅More affordable ($40)

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 8990 Benchmark Check

Radeon HD 7970 / R9 280X Benchmark Check

Technical Specifications

Side-by-side comparison of Radeon HD 8990 and Radeon HD 7970 / R9 280X

Radeon HD 8990

The Radeon HD 8990 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: 5,214 points. Launch price was $999.

Radeon HD 7970 / R9 280X

The Radeon HD 7970 / R9 280X is manufactured by AMD. It was released in October 8 2013. It features the GCN 1.0 architecture. The boost clock speed is 1000 MHz. It has 2048 shading units. The thermal design power (TDP) is 200W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 5,248 points. Launch price was $299.

⚡

Graphics Performance

The Radeon HD 8990 scores 5,214 and the Radeon HD 7970 / R9 280X reaches 5,248 in the G3D Mark benchmark — just a 0.7% difference, making them near-identical in rasterization performance. The Radeon HD 8990 is built on GCN 1.0 while the Radeon HD 7970 / R9 280X uses GCN 1.0, both on a 28 nm process. Shader units: 2,048 (Radeon HD 8990) vs 2,048 (Radeon HD 7970 / R9 280X). Raw compute: 4.096 TFLOPS ×2 (Radeon HD 8990) vs 4.096 TFLOPS (Radeon HD 7970 / R9 280X). Boost clocks: 1000 MHz vs 1000 MHz.

Feature	Radeon HD 8990	Radeon HD 7970 / R9 280X
G3D Mark Score	5,214	5,248
Architecture	GCN 1.0	GCN 1.0
Process Node	28 nm	28 nm
Shading Units	2048 ×2	2048
Compute (TFLOPS)	4.096 TFLOPS ×2	4.096 TFLOPS
Boost Clock	1000 MHz	1000 MHz
ROPs	32 ×2	32
TMUs	128 ×2	128
L1 Cache	512 KB	512 KB
L2 Cache	768 KB	768 KB

✨

Advanced Features (DLSS/FSR)

Feature	Radeon HD 8990	Radeon HD 7970 / R9 280X
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: 288 GB/s x2 (Radeon HD 8990) vs 264 GB/s (Radeon HD 7970 / R9 280X) — a 991.7% advantage for the Radeon HD 8990. Bus width: 384-bit x2 vs 384-bit.

Feature	Radeon HD 8990	Radeon HD 7970 / R9 280X
VRAM Capacity	3 GB	3 GB
Memory Type	GDDR5	GDDR5
Memory Bandwidth	288 GB/s x2+9%	264 GB/s
Bus Width	384-bit x2	384-bit
L2 Cache	768 KB	768 KB

🔌

Power & Dimensions

The Radeon HD 8990 draws 375W versus the Radeon HD 7970 / R9 280X's 200W — a 60.9% difference. The Radeon HD 7970 / R9 280X is more power-efficient. Recommended PSU: 750W (Radeon HD 8990) vs 500W (Radeon HD 7970 / R9 280X). Power connectors: 2x 8-pin vs 6-pin + 8-pin.

Feature	Radeon HD 8990	Radeon HD 7970 / R9 280X
TDP	375W	200W-47%
Recommended PSU	750W	500W-33%
Power Connector	2x 8-pin	6-pin + 8-pin
Length	—	275mm
Height	—	111mm
Slots	—	2
Temp (Load)	—	80 C
Perf/Watt	13.9	26.2+88%

💰

Value Analysis

The Radeon HD 8990 launched at $999 MSRP and currently averages $999, while the Radeon HD 7970 / R9 280X launched at $299 and now averages $40. The Radeon HD 7970 / R9 280X costs 96% less ($959 savings) at current market prices. Performance per dollar (G3D Mark / price): 5.2 (Radeon HD 8990) vs 131.2 (Radeon HD 7970 / R9 280X) — the Radeon HD 7970 / R9 280X offers 2423.1% better value.