Tesla K20Xm vs Tesla K40c
Tesla K20Xm
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Tesla K40c
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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 K20Xm is positioned at rank 100 and the Tesla K40c is on rank 378, so the Tesla K20Xm offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Tesla K20Xm
Performance Per Dollar Tesla K40c
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Tesla K40c is the superior choice for raw performance. It leads with a 2.1% higher G3D Mark score. However, the Tesla K20Xm offers more VRAM, which may be beneficial for texture-heavy scenarios at higher resolutions.
| Insight | Tesla K20Xm | Tesla K40c |
|---|---|---|
| Performance | ❌Lower raw frame rates (-2.1%) | ✅Leading raw performance (+2.1%) |
| Longevity | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) | 🛑Obsolete Architecture (2013 / Kepler (2012−2018)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+200%) | ❌ Less VRAM capacity |
| Efficiency | Normal Efficiency | Normal Efficiency |
| Case Fit | — | Standard Size (267mm) |
💎 Value Proposition
The Tesla K40c offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the Tesla K40c holds the technical lead. Priced at $500 (vs $7,699), it costs 94% less, resulting in a 1472% higher cost efficiency score.
| Insight | Tesla K20Xm | Tesla K40c |
|---|---|---|
| Cost Efficiency | ❌Lower cost efficiency | ✅Better overall value (+1472%) |
| Upfront Cost | ⚠️Higher upfront cost ($7,699) | ✅More affordable ($500) |
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 K20Xm and Tesla K40c
Tesla K20Xm
The Tesla K20Xm is manufactured by NVIDIA. It was released in November 12 2012. It features the Kepler architecture. The core clock speed is 732 MHz. It has 2688 shading units. The thermal design power (TDP) is 235W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 4,403 points. Launch price was $7,699.
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.
Graphics Performance
The Tesla K20Xm scores 4,403 and the Tesla K40c reaches 4,495 in the G3D Mark benchmark — just a 2.1% difference, making them near-identical in rasterization performance. The Tesla K20Xm is built on Kepler while the Tesla K40c uses Kepler, both on a 28 nm process. Shader units: 2,688 (Tesla K20Xm) vs 2,880 (Tesla K40c). Raw compute: 3.935 TFLOPS (Tesla K20Xm) vs 5.046 TFLOPS (Tesla K40c).
| Feature | Tesla K20Xm | Tesla K40c |
|---|---|---|
| G3D Mark Score | 4,403 | 4,495+2% |
| Architecture | Kepler | Kepler |
| Process Node | 28 nm | 28 nm |
| Shading Units | 2688 | 2880+7% |
| Compute (TFLOPS) | 3.935 TFLOPS | 5.046 TFLOPS+28% |
| ROPs | 48 | 48 |
| TMUs | 224 | 240+7% |
| L1 Cache | 224 KB | 240 KB+7% |
| L2 Cache | 1.5 MB | 1.5 MB |
Advanced Features (DLSS/FSR)
| Feature | Tesla K20Xm | Tesla K40c |
|---|---|---|
| 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)
The Tesla K20Xm comes with 6 GB of VRAM, while the Tesla K40c has 2 GB. The Tesla K20Xm offers 200% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 64-bit vs 64-bit.
| Feature | Tesla K20Xm | Tesla K40c |
|---|---|---|
| VRAM Capacity | 6 GB+200% | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Bus Width | 64-bit | 64-bit |
| L2 Cache | 1.5 MB | 1.5 MB |
Power & Dimensions
The Tesla K20Xm draws 235W versus the Tesla K40c's 245W — a 4.2% difference. The Tesla K20Xm is more power-efficient. Recommended PSU: 350W (Tesla K20Xm) vs 350W (Tesla K40c). Power connectors: PCIe-powered vs PCIe-powered.
| Feature | Tesla K20Xm | Tesla K40c |
|---|---|---|
| TDP | 235W-4% | 245W |
| Recommended PSU | 350W | 350W |
| Power Connector | PCIe-powered | PCIe-powered |
| Length | — | 267mm |
| Slots | — | 2 |
| Perf/Watt | 18.7+2% | 18.3 |
Value Analysis
The Tesla K20Xm launched at $7699 MSRP, while the Tesla K40c launched at $7699 and now averages $500. The Tesla K40c is the newer GPU (2013 vs 2012).
| Feature | Tesla K20Xm | Tesla K40c |
|---|---|---|
| MSRP | $7699 | $7699 |
| Avg Price (30d) | — | $500 |
| Codename | GK110 | GK180 |
| Release | November 12 2012 | October 8 2013 |
| Ranking | #473 | #465 |
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