Radeon R5 340 vs GeForce GT 640M
Radeon R5 340
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GeForce GT 640M
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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. Components placed above yours deliver better value for money. The Radeon R5 340 is positioned at rank 136 and the GeForce GT 640M is on rank 224, so the Radeon R5 340 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Radeon R5 340
Performance Per Dollar GeForce GT 640M
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Radeon R5 340 is the superior choice for raw performance. It leads with a 3.1% higher G3D Mark score. However, the GeForce GT 640M offers more VRAM, which may be beneficial for texture-heavy scenarios at higher resolutions.
| Insight | Radeon R5 340 | GeForce GT 640M |
|---|---|---|
| Performance | ✅Leading raw performance (+3.1%) | ❌Lower raw frame rates (-3.1%) |
| Longevity | 🛑Obsolete Architecture (2017 / GCN 4.0 (2016−2020)) | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+300%) |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | — | — |
💎 Value Proposition
The Radeon R5 340 offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the Radeon R5 340 holds the technical lead. Priced at $25 (vs $50), it costs 50% less, resulting in a 106.2% higher cost efficiency score.
| Insight | Radeon R5 340 | GeForce GT 640M |
|---|---|---|
| Cost Efficiency | ✅Better overall value (+106.2%) | ❌Lower cost efficiency |
| Upfront Cost | ✅More affordable ($25) | ⚠️Higher upfront cost ($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 R5 340 and GeForce GT 640M
Radeon R5 340
The Radeon R5 340 is manufactured by AMD. It was released in April 20 2017. It features the GCN 4.0 architecture. The core clock ranges from 1183 MHz to 1124 MHz. It has 384 shading units. The thermal design power (TDP) is 50W. Manufactured using 14 nm process technology. G3D Mark benchmark score: 935 points. Launch price was $79.
GeForce GT 640M
The GeForce GT 640M is manufactured by NVIDIA. It was released in March 22 2012. It features the Kepler architecture. The core clock ranges from Up to 625 MHz to 645 MHz. It has 384 shading units. The thermal design power (TDP) is 32W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 907 points.
Graphics Performance
The Radeon R5 340 scores 935 and the GeForce GT 640M reaches 907 in the G3D Mark benchmark — just a 3.1% difference, making them near-identical in rasterization performance. The Radeon R5 340 is built on GCN 4.0 while the GeForce GT 640M uses Kepler, both on 14 nm vs 28 nm. Shader units: 384 (Radeon R5 340) vs 384 (GeForce GT 640M). Raw compute: 0.9085 TFLOPS (Radeon R5 340) vs 0.48 TFLOPS (GeForce GT 640M). Boost clocks: 1124 MHz vs 645 MHz.
| Feature | Radeon R5 340 | GeForce GT 640M |
|---|---|---|
| G3D Mark Score | 935+3% | 907 |
| Architecture | GCN 4.0 | Kepler |
| Process Node | 14 nm | 28 nm |
| Shading Units | 384 | 384 |
| Compute (TFLOPS) | 0.9085 TFLOPS+89% | 0.48 TFLOPS |
| Boost Clock | 1124 MHz+74% | 645 MHz |
| ROPs | 16 | 16 |
| TMUs | 24 | 32+33% |
| L1 Cache | 96 KB+200% | 32 KB |
| L2 Cache | 512 KB+100% | 256 KB |
Advanced Features (DLSS/FSR)
| Feature | Radeon R5 340 | GeForce GT 640M |
|---|---|---|
| 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 | Standard |
Video Memory (VRAM)
The Radeon R5 340 comes with 512 MB of VRAM, while the GeForce GT 640M has 2 GB. The GeForce GT 640M offers 300% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 128-bit. L2 Cache: 512 KB (Radeon R5 340) vs 256 KB (GeForce GT 640M) — the Radeon R5 340 has significantly larger on-die cache to reduce VRAM reliance.
| Feature | Radeon R5 340 | GeForce GT 640M |
|---|---|---|
| VRAM Capacity | 0.5 GB | 2 GB+300% |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 128-bit | 128-bit |
| L2 Cache | 512 KB+100% | 256 KB |
Power & Dimensions
The Radeon R5 340 draws 50W versus the GeForce GT 640M's 32W — a 43.9% difference. The GeForce GT 640M is more power-efficient. Recommended PSU: 300W (Radeon R5 340) vs 350W (GeForce GT 640M). Power connectors: None vs PCIe-powered.
| Feature | Radeon R5 340 | GeForce GT 640M |
|---|---|---|
| TDP | 50W | 32W-36% |
| Recommended PSU | 300W-14% | 350W |
| Power Connector | None | PCIe-powered |
| Length | — | 0mm |
| Height | — | 0mm |
| Slots | — | 0 |
| Temp (Load) | — | 70°C |
| Perf/Watt | 18.7 | 28.3+51% |
Value Analysis
The Radeon R5 340 costs 50% less ($25 savings) at current market prices. Performance per dollar (G3D Mark / price): 37.4 (Radeon R5 340) vs 18.1 (GeForce GT 640M) — the Radeon R5 340 offers 106.6% better value. The Radeon R5 340 is the newer GPU (2017 vs 2012).
| Feature | Radeon R5 340 | GeForce GT 640M |
|---|---|---|
| MSRP | $99 | — |
| Avg Price (30d) | $25-50% | $50 |
| Performance per Dollar | 37.4+107% | 18.1 |
| Codename | Lexa | GK107 |
| Release | April 20 2017 | March 22 2012 |
| Ranking | #773 | #909 |
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