Radeon 680M vs Radeon R9 M390X
Radeon 680M
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Radeon R9 M390X
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Performance Spectrum - GPU
About G3D Mark
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. The Radeon 680M is positioned at rank 331 and the Radeon R9 M390X is on rank 416, so the Radeon 680M offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Radeon 680M
Performance Per Dollar Radeon R9 M390X
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
⚠️ Generational Difference
The Radeon 680M is significantly newer (2023 vs 2015). The Radeon 680M likely supports modern features like Ray Tracing, Tensor Cores, and DLSS/FSR upscaling, which act as force multipliers for performance. The Radeon R9 M390X lacks this hardware feature set, limiting its longevity in modern titles despite any raw power similarities.
🚀 Performance Leadership
The Radeon R9 M390X is the superior choice for raw performance. It leads with a 1.5% higher G3D Mark score and 100% more VRAM (4 GB vs 2 GB). This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon 680M.
| Insight | Radeon 680M | Radeon R9 M390X |
|---|---|---|
| Performance | ❌Lower raw frame rates (-1.5%) | ✅Leading raw performance (+1.5%) |
| Longevity | RDNA 2.0 (2020−2025) (6nm) | 🛑Obsolete Architecture (2015 / GCN 3.0 (2014−2019)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+100%) |
| Efficiency | 💡 Excellent Perf/Watt | ⚡ Higher Power Consumption |
| Case Fit | 📏 Compact / SFF Friendly | — |
💎 Value Proposition
The Radeon 680M offers a compelling cost-to-performance ratio. Priced at $80 versus $120 for the Radeon R9 M390X, it costs 33% less. While it maintains basic entry-level capabilities, this results in a 47.7% higher cost efficiency score.
| Insight | Radeon 680M | Radeon R9 M390X |
|---|---|---|
| Cost Efficiency | ✅Better overall value (+47.7%) | ❌Lower cost efficiency |
| Upfront Cost | ✅More affordable ($80) | ⚠️Higher upfront cost ($120) |
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.
Technical Specifications
Side-by-side comparison of Radeon 680M and Radeon R9 M390X
Radeon 680M
The Radeon 680M is manufactured by AMD. It was released in January 3 2023. It features the RDNA 2.0 architecture. The core clock ranges from 2000 MHz to 2200 MHz. It has 768 shading units. The thermal design power (TDP) is 50W. Manufactured using 6 nm process technology. It features 12 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 3,836 points.
Radeon R9 M390X
The Radeon R9 M390X is manufactured by AMD. It was released in May 5 2015. It features the GCN 3.0 architecture. The core clock speed is 723 MHz. It has 2048 shading units. The thermal design power (TDP) is 75W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 3,895 points.
Graphics Performance
The Radeon 680M scores 3,836 and the Radeon R9 M390X reaches 3,895 in the G3D Mark benchmark — just a 1.5% difference, making them near-identical in rasterization performance. The Radeon 680M is built on RDNA 2.0 while the Radeon R9 M390X uses GCN 3.0, both on 6 nm vs 28 nm. Shader units: 768 (Radeon 680M) vs 2,048 (Radeon R9 M390X). Raw compute: 3.379 TFLOPS (Radeon 680M) vs 2.961 TFLOPS (Radeon R9 M390X).
| Feature | Radeon 680M | Radeon R9 M390X |
|---|---|---|
| G3D Mark Score | 3,836 | 3,895+2% |
| Architecture | RDNA 2.0 | GCN 3.0 |
| Process Node | 6 nm | 28 nm |
| Shading Units | 768 | 2048+167% |
| Compute (TFLOPS) | 3.379 TFLOPS+14% | 2.961 TFLOPS |
| ROPs | 32 | 32 |
| TMUs | 48 | 128+167% |
| L1 Cache | 256 KB | 512 KB+100% |
| L2 Cache | 2 MB+300% | 0.5 MB |
Advanced Features (DLSS/FSR)
| Feature | Radeon 680M | Radeon R9 M390X |
|---|---|---|
| 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 680M comes with 2 GB of VRAM, while the Radeon R9 M390X has 4 GB. The Radeon R9 M390X offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: System vs 256-bit. L2 Cache: 2 MB (Radeon 680M) vs 0.5 MB (Radeon R9 M390X) — the Radeon 680M has significantly larger on-die cache to reduce VRAM reliance.
| Feature | Radeon 680M | Radeon R9 M390X |
|---|---|---|
| VRAM Capacity | 2 GB | 4 GB+100% |
| Memory Type | Shared | GDDR5 |
| Memory Bandwidth | System | 160 GB/s |
| Bus Width | System | 256-bit |
| L2 Cache | 2 MB+300% | 0.5 MB |
Power & Dimensions
The Radeon 680M draws 50W versus the Radeon R9 M390X's 75W — a 40% difference. The Radeon 680M is more power-efficient. Recommended PSU: 350W (Radeon 680M) vs 350W (Radeon R9 M390X). Power connectors: PCIe-powered vs Mobile.
| Feature | Radeon 680M | Radeon R9 M390X |
|---|---|---|
| TDP | 50W-33% | 75W |
| Recommended PSU | 350W | 350W |
| Power Connector | PCIe-powered | Mobile |
| Length | 1mm | — |
| Slots | 0 | — |
| Perf/Watt | 76.7+48% | 51.9 |
Value Analysis
The Radeon 680M costs 33.3% less ($40 savings) at current market prices. Performance per dollar (G3D Mark / price): 48.0 (Radeon 680M) vs 32.5 (Radeon R9 M390X) — the Radeon 680M offers 47.7% better value. The Radeon 680M is the newer GPU (2023 vs 2015).
| Feature | Radeon 680M | Radeon R9 M390X |
|---|---|---|
| MSRP | — | $550 |
| Avg Price (30d) | $80-33% | $120 |
| Performance per Dollar | 48.0+48% | 32.5 |
| Codename | Rembrandt+ | Amethyst |
| Release | January 3 2023 | May 5 2015 |
| Ranking | #512 | #504 |
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