Radeon 840M vs Radeon 680M
Radeon 840M
Popular choices:
Radeon 680M
Popular choices:
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 840M is positioned at rank 24 and the Radeon 680M is on rank 331, so the Radeon 840M offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Radeon 840M
Performance Per Dollar Radeon 680M
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Radeon 680M is the superior choice for raw performance. It leads with a 0.9% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon 840M.
| Insight | Radeon 840M | Radeon 680M |
|---|---|---|
| Performance | ❌Lower raw frame rates (-0.9%) | ✅Leading raw performance (+0.9%) |
| Longevity | RDNA 3+ (2024) (4nm) | RDNA 2.0 (2020−2025) (6nm) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+0%) |
| Efficiency | 💡 Excellent Perf/Watt | ⚡ Higher Power Consumption |
| Case Fit | — | 📏 Compact / SFF Friendly |
💎 Value Proposition
While current pricing data is unavailable, the Radeon 680M 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.
Technical Specifications
Side-by-side comparison of Radeon 840M and Radeon 680M
Radeon 840M
The Radeon 840M is manufactured by AMD. It was released in June 2 2024. It features the RDNA 3+ architecture. The boost clock speed is 2900 MHz. It has 256 shading units. The thermal design power (TDP) is 30W. Manufactured using 4 nm process technology. G3D Mark benchmark score: 3,803 points.
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.
Graphics Performance
The Radeon 840M scores 3,803 and the Radeon 680M reaches 3,836 in the G3D Mark benchmark — just a 0.9% difference, making them near-identical in rasterization performance. The Radeon 840M is built on RDNA 3+ while the Radeon 680M uses RDNA 2.0, both on 4 nm vs 6 nm. Shader units: 256 (Radeon 840M) vs 768 (Radeon 680M). Boost clocks: 2900 MHz vs 2200 MHz.
| Feature | Radeon 840M | Radeon 680M |
|---|---|---|
| G3D Mark Score | 3,803 | 3,836 |
| Architecture | RDNA 3+ | RDNA 2.0 |
| Process Node | 4 nm | 6 nm |
| Shading Units | 256 | 768+200% |
| Boost Clock | 2900 MHz+32% | 2200 MHz |
Advanced Features (DLSS/FSR)
| Feature | Radeon 840M | Radeon 680M |
|---|---|---|
| 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 Shared. Bus width: System vs System.
| Feature | Radeon 840M | Radeon 680M |
|---|---|---|
| VRAM Capacity | 2 GB | 2 GB |
| Memory Type | Shared | Shared |
| Memory Bandwidth | System | System |
| Bus Width | System | System |
Display & API Support
DirectX support: 12 Ultimate (12_2) (Radeon 840M) vs 12_2 (Radeon 680M). Maximum simultaneous displays: 4 vs 0.
| Feature | Radeon 840M | Radeon 680M |
|---|---|---|
| DirectX | 12 Ultimate (12_2) | 12_2 |
| Max Displays | 4 | 0 |
Media & Encoding
Hardware encoder: VCN 4.0 (Radeon 840M) vs VCN 3.1 (Radeon 680M). Decoder: VCN 4.0 vs VCN 3.1.
| Feature | Radeon 840M | Radeon 680M |
|---|---|---|
| Encoder | VCN 4.0 | VCN 3.1 |
| Decoder | VCN 4.0 | VCN 3.1 |
| Codecs | H.264,H.265,AV1,VP9 | — |
Power & Dimensions
The Radeon 840M draws 30W versus the Radeon 680M's 50W — a 50% difference. The Radeon 840M is more power-efficient. Recommended PSU: 350W (Radeon 840M) vs 350W (Radeon 680M). Power connectors: PCIe-powered vs PCIe-powered.
| Feature | Radeon 840M | Radeon 680M |
|---|---|---|
| TDP | 30W-40% | 50W |
| Recommended PSU | 350W | 350W |
| Power Connector | PCIe-powered | PCIe-powered |
| Length | — | 1mm |
| Slots | 0 | 0 |
| Temp (Load) | 90 | — |
| Perf/Watt | 126.8+65% | 76.7 |
Value Analysis
The Radeon 840M is the newer GPU (2024 vs 2023).
| Feature | Radeon 840M | Radeon 680M |
|---|---|---|
| Avg Price (30d) | — | $80 |
| Codename | Krackan Point | Rembrandt+ |
| Release | June 2 2024 | January 3 2023 |
| Ranking | #516 | #512 |
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