
Radeon RX 640 vs Radeon HD 5870

Radeon RX 640
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Radeon HD 5870
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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
⚠️ Generational Difference
The Radeon RX 640 is significantly newer (2019 vs 2009). 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 Radeon HD 5870 lacks this hardware feature set, limiting its longevity in modern titles despite any raw power similarities.
🚀 Performance Leadership
The Radeon HD 5870 is the superior choice for raw performance. It leads with a 0.4% 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 | Radeon HD 5870 |
|---|---|---|
| Performance | ❌Lower raw frame rates (-0.4%) | ✅Leading raw performance (+0.4%) |
| Longevity | GCN 4.0 (2016−2020) (14nm) | 🛑Obsolete Architecture (2009 / TeraScale 2 (2009−2015)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+100%) | ❌ Less VRAM capacity |
| Efficiency | 💡 Excellent Perf/Watt | ⚡ Higher Power Consumption |
| Case Fit | — | Standard Size (280mm) |
💎 Value Proposition
The Radeon HD 5870 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 10.4% higher cost efficiency score.
| Insight | Radeon RX 640 | Radeon HD 5870 |
|---|---|---|
| Cost Efficiency | ❌Lower cost efficiency | ✅Better overall value (+10.4%) |
| 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 HD 5870

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 HD 5870
The Radeon HD 5870 is manufactured by AMD. It was released in September 23 2009. It features the TeraScale 2 architecture. The core clock speed is 850 MHz. It has 1600 shading units. The thermal design power (TDP) is 188W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 2,180 points. Launch price was $399.
Graphics Performance
The Radeon RX 640 scores 2,172 and the Radeon HD 5870 reaches 2,180 in the G3D Mark benchmark — just a 0.4% difference, making them near-identical in rasterization performance. The Radeon RX 640 is built on GCN 4.0 while the Radeon HD 5870 uses TeraScale 2, both on 14 nm vs 40 nm. Shader units: 640 (Radeon RX 640) vs 1,600 (Radeon HD 5870). Raw compute: 1.559 TFLOPS (Radeon RX 640) vs 2.72 TFLOPS (Radeon HD 5870).
| Feature | Radeon RX 640 | Radeon HD 5870 |
|---|---|---|
| G3D Mark Score | 2,172 | 2,180 |
| Architecture | GCN 4.0 | TeraScale 2 |
| Process Node | 14 nm | 40 nm |
| Shading Units | 640 | 1600+150% |
| Compute (TFLOPS) | 1.559 TFLOPS | 2.72 TFLOPS+74% |
| ROPs | 16 | 32+100% |
| TMUs | 40 | 80+100% |
| L1 Cache | 160 KB | 160 KB |
| L2 Cache | 512 KB | 512 KB |
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 HD 5870 lacks specific hardware/driver support for this native frame generation tier.
| Feature | Radeon RX 640 | Radeon HD 5870 |
|---|---|---|
| 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 HD 5870 has 2 GB. The Radeon RX 640 offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 128-bit.
| Feature | Radeon RX 640 | Radeon HD 5870 |
|---|---|---|
| VRAM Capacity | 4 GB+100% | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 128-bit | 128-bit |
| L2 Cache | 512 KB | 512 KB |
Display & API Support
DirectX support: 12 (FL 12_0) (Radeon RX 640) vs 11.2 (Radeon HD 5870). Maximum simultaneous displays: 6 vs 3.
| Feature | Radeon RX 640 | Radeon HD 5870 |
|---|---|---|
| DirectX | 12 (FL 12_0)+7% | 11.2 |
| Max Displays | 6+100% | 3 |
Media & Encoding
Hardware encoder: VCE 3.4 (Radeon RX 640) vs UVD 2.2 (Radeon HD 5870). Decoder: UVD 6.3 vs UVD 2.2. Supported codecs: H.264,H.265/HEVC (Radeon RX 640) vs H.264 (Radeon HD 5870).
| Feature | Radeon RX 640 | Radeon HD 5870 |
|---|---|---|
| Encoder | VCE 3.4 | UVD 2.2 |
| Decoder | UVD 6.3 | UVD 2.2 |
| Codecs | H.264,H.265/HEVC | H.264 |
Power & Dimensions
The Radeon RX 640 draws 50W versus the Radeon HD 5870's 188W — a 116% difference. The Radeon RX 640 is more power-efficient. Recommended PSU: 350W (Radeon RX 640) vs 500W (Radeon HD 5870). Power connectors: PCIe-powered vs 2x 6-pin.
| Feature | Radeon RX 640 | Radeon HD 5870 |
|---|---|---|
| TDP | 50W-73% | 188W |
| Recommended PSU | 350W-30% | 500W |
| Power Connector | PCIe-powered | 2x 6-pin |
| Length | — | 280mm |
| Slots | 1-50% | 2 |
| Perf/Watt | 43.4+274% | 11.6 |
Value Analysis
The Radeon RX 640 launched at $159 MSRP and currently averages $55, while the Radeon HD 5870 launched at $399 and now averages $50. The Radeon HD 5870 costs 9.1% less ($5 savings) at current market prices. Performance per dollar (G3D Mark / price): 39.5 (Radeon RX 640) vs 43.6 (Radeon HD 5870) — the Radeon HD 5870 offers 10.4% better value. The Radeon RX 640 is the newer GPU (2019 vs 2009).
| Feature | Radeon RX 640 | Radeon HD 5870 |
|---|---|---|
| MSRP | $159-60% | $399 |
| Avg Price (30d) | $55 | $50-9% |
| Performance per Dollar | 39.5 | 43.6+10% |
| Codename | Polaris 23 | Cypress |
| Release | May 13 2019 | September 23 2009 |
| Ranking | #665 | #663 |
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