
Radeon RX 640 vs Radeon RX Vega 11

Radeon RX 640
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Radeon RX Vega 11
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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. The Radeon RX 640 is positioned at rank #323 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 RX 640
Performance Per Dollar
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Radeon RX 640 is the superior choice for raw performance. It leads with a 3.7% higher G3D Mark score and 100+% more VRAM (4 GB vs 0 MB). This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon RX Vega 11.
| Insight | Radeon RX 640 | Radeon RX Vega 11 |
|---|---|---|
| Performance | ✅Leading raw performance (+3.7%) | ❌Lower raw frame rates (-3.7%) |
| Longevity | GCN 4.0 (2016−2020) (14nm) | 🛑Obsolete Architecture (2018 / GCN 5.0 (2017−2020)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+100+%) | ❌ Less VRAM capacity |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | — | — |
💎 Value Proposition
The Radeon RX Vega 11 offers a compelling cost-to-performance ratio. Priced at $50 versus $55 for the Radeon RX 640, it costs 9% less. While it maintains basic entry-level capabilities, this results in a 6% higher cost efficiency score.
| Insight | Radeon RX 640 | Radeon RX Vega 11 |
|---|---|---|
| Cost Efficiency | ❌Lower cost efficiency | ✅Better overall value (+6%) |
| Upfront Cost | ⚠️Higher upfront cost ($55) | ✅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 RX 640 and Radeon RX Vega 11

Radeon RX 640
The Radeon RX 640 is manufactured by AMD. It was released in May 13 2019. It features the GCN 4.0 architecture. The core clock ranges from 1082 MHz to 1218 MHz. It has 640 shading units. The thermal design power (TDP) is 50W. Manufactured using 14 nm process technology. G3D Mark benchmark score: 2,172 points.

Radeon RX Vega 11
The Radeon RX Vega 11 is manufactured by AMD. It was released in May 10 2018. It features the GCN 5.0 architecture. The core clock ranges from 300 MHz to 1251 MHz. It has 704 shading units. The thermal design power (TDP) is 35W. Manufactured using 14 nm process technology. G3D Mark benchmark score: 2,094 points.
Graphics Performance
The Radeon RX 640 scores 2,172 and the Radeon RX Vega 11 reaches 2,094 in the G3D Mark benchmark — just a 3.7% difference, making them near-identical in rasterization performance. The Radeon RX 640 is built on GCN 4.0 while the Radeon RX Vega 11 uses GCN 5.0, both on a 14 nm process. Shader units: 640 (Radeon RX 640) vs 704 (Radeon RX Vega 11). Raw compute: 1.559 TFLOPS (Radeon RX 640) vs 1.761 TFLOPS (Radeon RX Vega 11). Boost clocks: 1218 MHz vs 1251 MHz.
| Feature | Radeon RX 640 | Radeon RX Vega 11 |
|---|---|---|
| G3D Mark Score | 2,172+4% | 2,094 |
| Architecture | GCN 4.0 | GCN 5.0 |
| Process Node | 14 nm | 14 nm |
| Shading Units | 640 | 704+10% |
| Compute (TFLOPS) | 1.559 TFLOPS | 1.761 TFLOPS+13% |
| Boost Clock | 1218 MHz | 1251 MHz+3% |
| ROPs | 16+100% | 8 |
| TMUs | 40 | 44+10% |
Advanced Features (DLSS/FSR)
A critical advantage for the Radeon RX 640 is support for FSR 3 / AFMF. This allows it to generate entire frames using AI/Algorithms, essentially doubling the frame rate in CPU-bound scenarios or heavy ray-tracing titles. The Radeon RX Vega 11 lacks specific hardware/driver support for this native frame generation tier.
| Feature | Radeon RX 640 | Radeon RX Vega 11 |
|---|---|---|
| Upscaling Tech | FSR 3 (Native) | FSR 1.0 (Software) |
| Frame Generation | FSR 3 / AFMF (Driver) | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | AMD Anti-Lag | AMD Anti-Lag |
Video Memory (VRAM)
The Radeon RX 640 comes with 4 GB of VRAM, while the Radeon RX Vega 11 has 0 MB. The Radeon RX 640 offers 100+% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs System.
| Feature | Radeon RX 640 | Radeon RX Vega 11 |
|---|---|---|
| VRAM Capacity | 4 GB | 0 GB |
| Memory Type | GDDR5 | Shared |
| Memory Bandwidth | Unknown | System |
| Bus Width | 128-bit | System |
Display & API Support
DirectX support: 12 (FL 12_0) (Radeon RX 640) vs 12 (12_1) (Radeon RX Vega 11). Vulkan: 1.3 vs 1.3. OpenGL: 4.6 vs 4.6. Maximum simultaneous displays: 6 vs 3.
| Feature | Radeon RX 640 | Radeon RX Vega 11 |
|---|---|---|
| DirectX | 12 (FL 12_0) | 12 (12_1) |
| Vulkan | 1.3 | 1.3 |
| OpenGL | 4.6 | 4.6 |
| Max Displays | 6+100% | 3 |
Media & Encoding
Hardware encoder: VCE 3.4 (Radeon RX 640) vs VCE 3.0 (Radeon RX Vega 11). Decoder: UVD 6.3 vs UVD 7.0. Supported codecs: H.264,H.265/HEVC (Radeon RX 640) vs H.264,H.265 (Radeon RX Vega 11).
| Feature | Radeon RX 640 | Radeon RX Vega 11 |
|---|---|---|
| Encoder | VCE 3.4 | VCE 3.0 |
| Decoder | UVD 6.3 | UVD 7.0 |
| Codecs | H.264,H.265/HEVC | H.264,H.265 |
Power & Dimensions
The Radeon RX 640 draws 50W versus the Radeon RX Vega 11's 35W — a 35.3% difference. The Radeon RX Vega 11 is more power-efficient. Recommended PSU: 350W (Radeon RX 640) vs 300W (Radeon RX Vega 11). Power connectors: PCIe-powered vs None.
| Feature | Radeon RX 640 | Radeon RX Vega 11 |
|---|---|---|
| TDP | 50W | 35W-30% |
| Recommended PSU | 350W | 300W-14% |
| Power Connector | PCIe-powered | None |
| Length | — | 0mm |
| Height | — | 0mm |
| Slots | 1 | 0-100% |
| Temp (Load) | — | 75 |
| Perf/Watt | 43.4 | 59.8+38% |
Value Analysis
The Radeon RX 640 launched at $159 MSRP and currently averages $55, while the Radeon RX Vega 11 launched at $149 and now averages $50. The Radeon RX Vega 11 costs 9.1% less ($5 savings) at current market prices. Performance per dollar (G3D Mark / price): 39.5 (Radeon RX 640) vs 41.9 (Radeon RX Vega 11) — the Radeon RX Vega 11 offers 6.1% better value. The Radeon RX 640 is the newer GPU (2019 vs 2018).
| Feature | Radeon RX 640 | Radeon RX Vega 11 |
|---|---|---|
| MSRP | $159 | $149-6% |
| Avg Price (30d) | $55 | $50-9% |
| Performance per Dollar | 39.5 | 41.9+6% |
| Codename | Polaris 23 | Raven |
| Release | May 13 2019 | May 10 2018 |
| Ranking | #665 | #673 |
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