
Radeon R9 M390X vs Radeon HD 7850

Radeon R9 M390X
Popular choices:

Radeon HD 7850
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. The Radeon R9 M390X is positioned at rank #416 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Radeon R9 M390X
Performance Per Dollar
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Radeon HD 7850 is the superior choice for raw performance. It leads with a 0.1% higher G3D Mark score. However, the Radeon R9 M390X offers more VRAM, which may be beneficial for texture-heavy scenarios at higher resolutions.
| Insight | Radeon R9 M390X | Radeon HD 7850 |
|---|---|---|
| Performance | ❌Lower raw frame rates (-0.1%) | ✅Leading raw performance (+0.1%) |
| Longevity | 🛑Obsolete Architecture (2015 / GCN 3.0 (2014−2019)) | 🛑Obsolete Architecture (2012 / GCN 1.0 (2012−2020)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+100%) | ❌ Less VRAM capacity |
| Efficiency | 💡 Excellent Perf/Watt | ⚡ Higher Power Consumption |
| Case Fit | — | 📏 Compact / SFF Friendly |
💎 Value Proposition
The Radeon HD 7850 offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the Radeon HD 7850 holds the technical lead. Priced at $50 (vs $120), it costs 58% less, resulting in a 140.1% higher cost efficiency score.
| Insight | Radeon R9 M390X | Radeon HD 7850 |
|---|---|---|
| Cost Efficiency | ❌Lower cost efficiency | ✅Better overall value (+140.1%) |
| Upfront Cost | ⚠️Higher upfront cost ($120) | ✅More affordable ($50) |
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 R9 M390X and Radeon HD 7850

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.

Radeon HD 7850
The Radeon HD 7850 is manufactured by AMD. It was released in March 5 2012. It features the GCN 1.0 architecture. The boost clock speed is 1000 MHz. It has 1024 shading units. The thermal design power (TDP) is 130W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 3,897 points. Launch price was $249.
Graphics Performance
The Radeon R9 M390X scores 3,895 and the Radeon HD 7850 reaches 3,897 in the G3D Mark benchmark — just a 0.1% difference, making them near-identical in rasterization performance. The Radeon R9 M390X is built on GCN 3.0 while the Radeon HD 7850 uses GCN 1.0, both on a 28 nm process. Shader units: 2,048 (Radeon R9 M390X) vs 1,024 (Radeon HD 7850). Raw compute: 2.961 TFLOPS (Radeon R9 M390X) vs 1.761 TFLOPS (Radeon HD 7850).
| Feature | Radeon R9 M390X | Radeon HD 7850 |
|---|---|---|
| G3D Mark Score | 3,895 | 3,897 |
| Architecture | GCN 3.0 | GCN 1.0 |
| Process Node | 28 nm | 28 nm |
| Shading Units | 2048+100% | 1024 |
| Compute (TFLOPS) | 2.961 TFLOPS+68% | 1.761 TFLOPS |
| ROPs | 32 | 32 |
| TMUs | 128+100% | 64 |
| L1 Cache | 512 KB+100% | 256 KB |
| L2 Cache | 512 KB | 512 KB |
Advanced Features (DLSS/FSR)
| Feature | Radeon R9 M390X | Radeon HD 7850 |
|---|---|---|
| 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 R9 M390X comes with 4 GB of VRAM, while the Radeon HD 7850 has 2 GB. The Radeon R9 M390X offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Memory bandwidth: 160 GB/s (Radeon R9 M390X) vs 153.6 GB/s (Radeon HD 7850) — a 4.2% advantage for the Radeon R9 M390X. Bus width: 256-bit vs 256-bit.
| Feature | Radeon R9 M390X | Radeon HD 7850 |
|---|---|---|
| VRAM Capacity | 4 GB+100% | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | 160 GB/s+4% | 153.6 GB/s |
| Bus Width | 256-bit | 256-bit |
| L2 Cache | 512 KB | 512 KB |
Power & Dimensions
The Radeon R9 M390X draws 75W versus the Radeon HD 7850's 130W — a 53.7% difference. The Radeon R9 M390X is more power-efficient. Recommended PSU: 350W (Radeon R9 M390X) vs 500W (Radeon HD 7850). Power connectors: Mobile vs 1x 6-pin.
| Feature | Radeon R9 M390X | Radeon HD 7850 |
|---|---|---|
| TDP | 75W-42% | 130W |
| Recommended PSU | 350W-30% | 500W |
| Power Connector | Mobile | 1x 6-pin |
| Length | — | 210mm |
| Slots | — | 2 |
| Perf/Watt | 51.9+73% | 30.0 |
Value Analysis
The Radeon R9 M390X launched at $550 MSRP and currently averages $120, while the Radeon HD 7850 launched at $249 and now averages $50. The Radeon HD 7850 costs 58.3% less ($70 savings) at current market prices. Performance per dollar (G3D Mark / price): 32.5 (Radeon R9 M390X) vs 77.9 (Radeon HD 7850) — the Radeon HD 7850 offers 139.7% better value. The Radeon R9 M390X is the newer GPU (2015 vs 2012).
| Feature | Radeon R9 M390X | Radeon HD 7850 |
|---|---|---|
| MSRP | $550 | $249-55% |
| Avg Price (30d) | $120 | $50-58% |
| Performance per Dollar | 32.5 | 77.9+140% |
| Codename | Amethyst | Pitcairn |
| Release | May 5 2015 | March 5 2012 |
| Ranking | #504 | #503 |
Top Performing GPUs
The most powerful gpus ranked by G3D Mark benchmark scores.















