Tesla K40c vs Tesla K20m
Tesla K40c
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Tesla K20m
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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 Tesla K40c is positioned at rank 378 and the Tesla K20m is on rank 1, so the Tesla K20m offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Tesla K40c
Performance Per Dollar Tesla K20m
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Tesla K40c is the superior choice for raw performance. It leads with a 1.4% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Tesla K20m.
| Insight | Tesla K40c | Tesla K20m |
|---|---|---|
| Performance | ✅Leading raw performance (+1.4%) | ❌Lower raw frame rates (-1.4%) |
| Longevity | 🛑Obsolete Architecture (2013 / Kepler (2012−2018)) | 🛑Obsolete Architecture (2013 / Kepler (2012−2018)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+0%) |
| Efficiency | Normal Efficiency | Normal Efficiency |
| Case Fit | Standard Size (267mm) | — |
💎 Value Proposition
The Tesla K20m offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the Tesla K20m holds the technical lead. Priced at $55 (vs $500), it costs 89% less, resulting in a 796.3% higher cost efficiency score.
| Insight | Tesla K40c | Tesla K20m |
|---|---|---|
| Cost Efficiency | ❌Lower cost efficiency | ✅Better overall value (+796.3%) |
| Upfront Cost | ⚠️Higher upfront cost ($500) | ✅More affordable ($55) |
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 Tesla K40c and Tesla K20m
Tesla K40c
The Tesla K40c is manufactured by NVIDIA. It was released in October 8 2013. It features the Kepler architecture. The core clock ranges from 745 MHz to 876 MHz. It has 2880 shading units. The thermal design power (TDP) is 245W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 4,495 points. Launch price was $7,699.
Tesla K20m
The Tesla K20m is manufactured by NVIDIA. It was released in January 5 2013. It features the Kepler architecture. The core clock speed is 706 MHz. It has 2496 shading units. The thermal design power (TDP) is 225W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 4,432 points. Launch price was $3,199.
Graphics Performance
The Tesla K40c scores 4,495 and the Tesla K20m reaches 4,432 in the G3D Mark benchmark — just a 1.4% difference, making them near-identical in rasterization performance. The Tesla K40c is built on Kepler while the Tesla K20m uses Kepler, both on a 28 nm process. Shader units: 2,880 (Tesla K40c) vs 2,496 (Tesla K20m). Raw compute: 5.046 TFLOPS (Tesla K40c) vs 3.524 TFLOPS (Tesla K20m).
| Feature | Tesla K40c | Tesla K20m |
|---|---|---|
| G3D Mark Score | 4,495+1% | 4,432 |
| Architecture | Kepler | Kepler |
| Process Node | 28 nm | 28 nm |
| Shading Units | 2880+15% | 2496 |
| Compute (TFLOPS) | 5.046 TFLOPS+43% | 3.524 TFLOPS |
| ROPs | 48+20% | 40 |
| TMUs | 240+15% | 208 |
| L1 Cache | 240 KB+15% | 208 KB |
| L2 Cache | 1.5 MB+20% | 1.25 MB |
Advanced Features (DLSS/FSR)
| Feature | Tesla K40c | Tesla K20m |
|---|---|---|
| Upscaling Tech | FSR 1.0 (Software) | FSR 1.0 (Software) |
| Frame Generation | Not Supported | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | Standard | Standard |
Video Memory (VRAM)
Both cards feature 2 GB of GDDR5. Bus width: 64-bit vs 64-bit. L2 Cache: 1.5 MB (Tesla K40c) vs 1.25 MB (Tesla K20m) — the Tesla K40c has significantly larger on-die cache to reduce VRAM reliance.
| Feature | Tesla K40c | Tesla K20m |
|---|---|---|
| VRAM Capacity | 2 GB | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Bus Width | 64-bit | 64-bit |
| L2 Cache | 1.5 MB+20% | 1.25 MB |
Power & Dimensions
The Tesla K40c draws 245W versus the Tesla K20m's 225W — a 8.5% difference. The Tesla K20m is more power-efficient. Recommended PSU: 350W (Tesla K40c) vs 350W (Tesla K20m). Power connectors: PCIe-powered vs PCIe-powered.
| Feature | Tesla K40c | Tesla K20m |
|---|---|---|
| TDP | 245W | 225W-8% |
| Recommended PSU | 350W | 350W |
| Power Connector | PCIe-powered | PCIe-powered |
| Length | 267mm | — |
| Slots | 2 | — |
| Perf/Watt | 18.3 | 19.7+8% |
Value Analysis
The Tesla K40c launched at $7699 MSRP and currently averages $500, while the Tesla K20m launched at $3199 and now averages $55. The Tesla K20m costs 89% less ($445 savings) at current market prices. Performance per dollar (G3D Mark / price): 9.0 (Tesla K40c) vs 80.6 (Tesla K20m) — the Tesla K20m offers 795.6% better value.
| Feature | Tesla K40c | Tesla K20m |
|---|---|---|
| MSRP | $7699 | $3199-58% |
| Avg Price (30d) | $500 | $55-89% |
| Performance per Dollar | 9.0 | 80.6+796% |
| Codename | GK180 | GK110 |
| Release | October 8 2013 | January 5 2013 |
| Ranking | #465 | #470 |
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