Radeon RX 640 vs Quadro K620
Radeon RX 640
Popular choices:
Quadro K620
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 RX 640 is positioned at rank 323 and the Quadro K620 is on rank 99, so the Quadro K620 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Radeon RX 640
Performance Per Dollar Quadro K620
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
⚠️ Generational Difference
The Radeon RX 640 uses modern memory architecture. The Radeon RX 640 likely supports modern features like Ray Tracing, Tensor Cores, and DLSS/FSR upscaling, which act as force multipliers for performance. The Quadro K620 lacks this hardware feature set, limiting its longevity in modern titles despite any raw power similarities.
🚀 Performance Leadership
The Quadro K620 is the superior choice for raw performance. It leads with a 1.9% higher G3D Mark score. However, the Radeon RX 640 offers more VRAM, which may be beneficial for texture-heavy scenarios at higher resolutions.
| Insight | Radeon RX 640 | Quadro K620 |
|---|---|---|
| Performance | ❌Lower raw frame rates (-1.9%) | ✅Leading raw performance (+1.9%) |
| Longevity | GCN 4.0 (2016−2020) (14nm) | 🛑Obsolete Architecture (2014 / Maxwell (2014−2017)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+100%) | ❌ Less VRAM capacity |
| Efficiency | Normal Efficiency | Normal Efficiency |
| Case Fit | — | — |
💎 Value Proposition
The Quadro K620 offers a compelling cost-to-performance ratio. Priced at $30 versus $55 for the Radeon RX 640, it costs 45% less. While it maintains basic entry-level capabilities, this results in a 86.8% higher cost efficiency score.
| Insight | Radeon RX 640 | Quadro K620 |
|---|---|---|
| Cost Efficiency | ❌Lower cost efficiency | ✅Better overall value (+86.8%) |
| Upfront Cost | ⚠️Higher upfront cost ($55) | ✅More affordable ($30) |
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 Quadro K620
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.
Quadro K620
The Quadro K620 is manufactured by NVIDIA. It was released in July 22 2014. It features the Maxwell architecture. The core clock ranges from 1058 MHz to 1124 MHz. It has 384 shading units. The thermal design power (TDP) is 45W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 2,213 points. Launch price was $189.89.
Graphics Performance
The Radeon RX 640 scores 2,172 and the Quadro K620 reaches 2,213 in the G3D Mark benchmark — just a 1.9% difference, making them near-identical in rasterization performance. The Radeon RX 640 is built on GCN 4.0 while the Quadro K620 uses Maxwell, both on 14 nm vs 28 nm. Shader units: 640 (Radeon RX 640) vs 384 (Quadro K620). Raw compute: 1.559 TFLOPS (Radeon RX 640) vs 0.8632 TFLOPS (Quadro K620). Boost clocks: 1218 MHz vs 1124 MHz.
| Feature | Radeon RX 640 | Quadro K620 |
|---|---|---|
| G3D Mark Score | 2,172 | 2,213+2% |
| Architecture | GCN 4.0 | Maxwell |
| Process Node | 14 nm | 28 nm |
| Shading Units | 640+67% | 384 |
| Compute (TFLOPS) | 1.559 TFLOPS+81% | 0.8632 TFLOPS |
| Boost Clock | 1218 MHz+8% | 1124 MHz |
| ROPs | 16 | 16 |
| TMUs | 40+67% | 24 |
| L1 Cache | 160 KB | 192 KB+20% |
| L2 Cache | 0.5 MB | 2 MB+300% |
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 Quadro K620 lacks specific hardware/driver support for this native frame generation tier.
| Feature | Radeon RX 640 | Quadro K620 |
|---|---|---|
| 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 | Standard |
Video Memory (VRAM)
The Radeon RX 640 comes with 4 GB of VRAM, while the Quadro K620 has 2 GB. The Radeon RX 640 offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 64-bit. L2 Cache: 0.5 MB (Radeon RX 640) vs 2 MB (Quadro K620) — the Quadro K620 has significantly larger on-die cache to reduce VRAM reliance.
| Feature | Radeon RX 640 | Quadro K620 |
|---|---|---|
| VRAM Capacity | 4 GB+100% | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit+100% | 64-bit |
| L2 Cache | 0.5 MB | 2 MB+300% |
Power & Dimensions
The Radeon RX 640 draws 50W versus the Quadro K620's 45W — a 10.5% difference. The Quadro K620 is more power-efficient. Recommended PSU: 350W (Radeon RX 640) vs 350W (Quadro K620). Power connectors: PCIe-powered vs PCIe-powered.
| Feature | Radeon RX 640 | Quadro K620 |
|---|---|---|
| TDP | 50W | 45W-10% |
| Recommended PSU | 350W | 350W |
| Power Connector | PCIe-powered | PCIe-powered |
| Slots | 1 | — |
| Perf/Watt | 43.4 | 49.2+13% |
Value Analysis
The Radeon RX 640 launched at $159 MSRP and currently averages $55, while the Quadro K620 launched at $150 and now averages $30. The Quadro K620 costs 45.5% less ($25 savings) at current market prices. Performance per dollar (G3D Mark / price): 39.5 (Radeon RX 640) vs 73.8 (Quadro K620) — the Quadro K620 offers 86.8% better value. The Radeon RX 640 is the newer GPU (2019 vs 2014).
| Feature | Radeon RX 640 | Quadro K620 |
|---|---|---|
| MSRP | $159 | $150-6% |
| Avg Price (30d) | $55 | $30-45% |
| Performance per Dollar | 39.5 | 73.8+87% |
| Codename | Polaris 23 | GM107 |
| Release | May 13 2019 | July 22 2014 |
| Ranking | #665 | #660 |
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