GPU Comparison

Head-to-Head Benchmarks

The recorded database includes one direct comparison between the NVIDIA RTX A2000 Mobile and the NVIDIA Tesla K20Xm: the Geekbench OpenCL test. This is a decisive result. The RTX A2000 Mobile scores 56,518, while the Tesla K20Xm scores 17,215. That is a 228.3% advantage for the RTX A2000 Mobile, meaning it delivers more than three times the performance in this compute-oriented workload.

The scale of this win matters. In the OpenCL benchmark, the RTX A2000 Mobile is not just marginally faster; it completely redefines the performance class. The Tesla K20Xm, despite its larger memory pool and wider bus, cannot keep pace in raw compute throughput as measured by this test. The RTX A2000 Mobile's score of 56,518 places it in a different tier entirely, and the delta of 228.3% is the kind of gap that shows up in real-world GPU compute tasks, where shader efficiency and modern architecture features matter more than just having more memory or more texture units.

Looking at the broader benchmark context, the RTX A2000 Mobile has an average benchmark score of 13,821 across all recorded tests, while the Tesla K20Xm averages 12,625. That is a 1,196 point difference, or roughly 9.5% higher average performance for the RTX A2000 Mobile. The RTX A2000 Mobile also sits at the 55th percentile of all GPUs in the database, while the Tesla K20Xm sits at the 52nd percentile. Neither card is a top-tier performer by modern standards, but the RTX A2000 Mobile consistently outranks the Tesla K20Xm in the aggregate data.

The Tesla K20Xm does have one recorded benchmark that the RTX A2000 Mobile lacks: a Geekbench Metal score of 8,035. This is not a head-to-head comparison, since the RTX A2000 Mobile has no Metal test in the database, so it cannot be used to claim a win for either card. The Metal score is simply an additional data point for the Tesla K20Xm, but it does not offset the massive OpenCL deficit.

In terms of direct wins, the RTX A2000 Mobile takes the sole head-to-head benchmark. The Tesla K20Xm has zero wins in the recorded comparisons. This is a clear, if lopsided, statistical outcome.

The Verdict

From the database, the choice is unambiguous for compute workloads: the NVIDIA RTX A2000 Mobile wins the only directly comparable benchmark by a 228.3% margin. If your priority is OpenCL performance, the RTX A2000 Mobile is the superior card by a wide margin. The data shows no scenario in the recorded tests where the Tesla K20Xm beats the RTX A2000 Mobile.

The RTX A2000 Mobile is also the more efficient package. It is rated at 95 W TDP, compared to 235 W for the Tesla K20Xm. The Tesla K20Xm also requires a 550 W suggested power supply, while the RTX A2000 Mobile is an IGP (integrated GPU form factor) with no power connectors and no display outputs beyond being portable-device dependent. The RTX A2000 Mobile uses PCIe 4.0 x16, while the Tesla K20Xm uses PCIe 3.0 x16. For a mobile or compact system, the RTX A2000 Mobile is the only realistic option, since the Tesla K20Xm is a dual-slot, 267 mm (10.5 inch) card with no display outputs.

However, the Tesla K20Xm has one clear advantage in the specification data: memory capacity and bandwidth. It offers 6 GB of GDDR5 on a 384-bit bus, delivering 249.6 GB/s, whereas the RTX A2000 Mobile has 4 GB of GDDR6 on a 128-bit bus, delivering 192.0 GB/s. If your workload is memory-bound and requires more than 4 GB of VRAM, the Tesla K20Xm holds a theoretical edge, but the recorded benchmarks do not show this translating into a compute win.

The RTX A2000 Mobile is the pick for anyone running OpenCL-heavy tasks, modern DirectX workloads, or needing a low-power, mobile-friendly GPU. The Tesla K20Xm is the pick only if you specifically need 6 GB of VRAM and are willing to accept its much lower compute performance, higher power draw, and older architecture.

Where Each One Wins

RTX A2000 Mobile wins on compute performance. The 228.3% OpenCL lead is the headline. It also has a higher average benchmark score (13,821 vs 12,625) and a higher percentile rank (55th vs 52nd). The RTX A2000 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the Tesla K20Xm only supports DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.2.175. For modern gaming APIs or compute APIs that leverage DirectX 12 Ultimate features, the RTX A2000 Mobile is the clear winner.

Tesla K20Xm wins on raw memory capacity and bandwidth. It has 6 GB vs 4 GB, and 249.6 GB/s vs 192.0 GB/s. It also has more texture mapping units (224 vs 80) and more shading units (2,688 vs 2,560). The Tesla K20Xm's texture rate of 164.0 GTexel/s is higher than the RTX A2000 Mobile's 135.0 GTexel/s. However, the RTX A2000 Mobile's pixel rate is nearly double (80.98 GPixel/s vs 40.99 GPixel/s), and its FP32 throughput is more than double (8.637 TFLOPS vs 3.935 TFLOPS). The Tesla K20Xm has no recorded FP16 or ray tracing or tensor core data, while the RTX A2000 Mobile has 20 RT cores and 80 tensor cores.

For rasterization and pixel fill, the RTX A2000 Mobile wins. The pixel rate difference is stark: 80.98 GPixel/s vs 40.99 GPixel/s. This indicates the RTX A2000 Mobile is capable of much higher fill rates in graphics workloads, despite having fewer TMUs.

For memory-bound tasks, the Tesla K20Xm has a theoretical edge. The 249.6 GB/s bandwidth and 6 GB capacity are both higher. But the recorded OpenCL benchmark does not reflect this advantage, suggesting that the RTX A2000 Mobile's compute efficiency more than compensates.

FAQ

Q: Which GPU is faster in the recorded benchmarks?

A: The NVIDIA RTX A2000 Mobile is faster. It wins the only head-to-head benchmark, Geekbench OpenCL, with a score of 56,518 versus 17,215 for the Tesla K20Xm, a 228.3% advantage.

Q: Does the Tesla K20Xm have any benchmark where it beats the RTX A2000 Mobile?

A: In the recorded data, no. The Tesla K20Xm has a Geekbench Metal score of 8,035, but the RTX A2000 Mobile has no Metal test recorded, so there is no direct comparison for that test.

Q: Which GPU has more memory?

A: The Tesla K20Xm has 6 GB of GDDR5, while the RTX A2000 Mobile has 4 GB of GDDR6. The Tesla K20Xm also has a wider 384-bit memory bus and higher bandwidth at 249.6 GB/s versus 192.0 GB/s.

Q: What are the power requirements for each card?

A: The RTX A2000 Mobile is rated at 95 W TDP and requires no power connectors. The Tesla K20Xm is rated at 235 W TDP and has a suggested power supply of 550 W.

Q: Which GPU supports newer graphics APIs?

A: The RTX A2000 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Tesla K20Xm supports DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.2.175. The RTX A2000 Mobile also has 20 RT cores and 80 tensor cores, which the Tesla K20Xm lacks.

Q: What is the average performance score for each GPU?

A: The RTX A2000 Mobile has an average benchmark score of 13,821, while the Tesla K20Xm averages 12,625. The RTX A2000 Mobile sits at the 55th percentile of all GPUs, and the Tesla K20Xm at the 52nd percentile.

Architecture Differences

The two cards are built on fundamentally different architectures and process nodes. The RTX A2000 Mobile uses the GA107 chip on NVIDIA's Ampere architecture, fabricated on an 8 nm process at Samsung. It packs 8,700 million transistors on a 200 mm² die, giving a transistor density of 43.5 million per mm². The Tesla K20Xm uses the GK110 chip on NVIDIA's Kepler architecture, fabricated on a 28 nm process at TSMC. It contains 7,080 million transistors on a much larger 561 mm² die, resulting in a transistor density of only 12.6 million per mm².

This architectural gap explains the performance difference. The Ampere architecture in the RTX A2000 Mobile introduces dedicated ray tracing cores (20) and tensor cores (80), which are entirely absent from the Kepler-based Tesla K20Xm. The RTX A2000 Mobile also supports FP16 compute at a 1:1 ratio with FP32, delivering 8.637 TFLOPS in both formats. The Tesla K20Xm has no recorded FP16 capability, and its FP32 throughput is only 3.935 TFLOPS.

The memory architectures also diverge. The RTX A2000 Mobile uses GDDR6 at 12 Gbps effective, while the Tesla K20Xm uses GDDR5 at 5.2 Gbps effective. Despite the Tesla K20Xm having a wider 384-bit bus, the RTX A2000 Mobile's newer memory technology and higher clock speed help it achieve a respectable 192.0 GB/s, though the Tesla K20Xm still leads at 249.6 GB/s.

The shading core counts are close: the RTX A2000 Mobile has 2,560 shading units, and the Tesla K20Xm has 2,688. However, the Tesla K20Xm has 224 TMUs versus 80 for the RTX A2000 Mobile, and both have 48 ROPs. The RTX A2000 Mobile compensates with a much higher clock speed (boost 1687 MHz) compared to the Tesla K20Xm, which has no recorded base or boost clocks.

Specification Differences

The table below highlights only the fields where the two GPUs differ in the database.

| Field | RTX A2000 Mobile | Tesla K20Xm |

|---|---|---|

| Chip | GA107 | GK110 |

| Architecture | Ampere | Kepler |

| Generation | Ampere-MW (Ax000) | Tesla Kepler (Kxx) |

| Process Node | 8 nm | 28 nm |

| Foundry | Samsung | TSMC |

| Transistors | 8,700 million | 7,080 million |

| Die Size | 200 mm² | 561 mm² |

| Transistor Density | 43.5M / mm² | 12.6M / mm² |

| Base Clock | 1215 MHz | null |

| Boost Clock | 1687 MHz | null |

| Memory Clock | 1500 MHz, 12 Gbps effective | 1300 MHz, 5.2 Gbps effective |

| Memory Size | 4 GB | 6 GB |

| Memory Type | GDDR6 | GDDR5 |

| Memory Bus Width | 128 bit | 384 bit |

| Memory Bandwidth | 192.0 GB/s | 249.6 GB/s |

| Shading Units | 2560 | 2688 |

| TMUs | 80 | 224 |

| RT Cores | 20 | null |

| Tensor Cores | 80 | null |

| Pixel Rate | 80.98 GPixel/s | 40.99 GPixel/s |

| Texture Rate | 135.0 GTexel/s | 164.0 GTexel/s |

| FP32 | 8.637 TFLOPS | 3.935 TFLOPS |

| FP16 | 8.637 TFLOPS (1:1) | null |

| TDP | 95 W | 235 W |

| Slot Width | IGP | Dual-slot |

| Power Connectors | None | null |

| Suggested PSU | null | 550 W |

| Bus Interface | PCIe 4.0 x16 | PCIe 3.0 x16 |

| Display Outputs | Portable Device Dependent | No outputs |

| DirectX | 12 Ultimate (12_2) | 12 (11_0) |

| Vulkan | 1.4 | 1.2.175 |

| Length | null | 267 mm, 10.5 inches |

| Release Date | 2021-04-11 | 2012-11-11 |

| Predecessor | Quadro Turing-M | Tesla Fermi |

| Successor | Ada-MW | Tesla Maxwell |

| Launch MSRP | null | 7,699 USD |

The RTX A2000 Mobile is a modern, efficient, compute-focused mobile GPU. The Tesla K20Xm is a legacy dual-slot compute card with more memory but far less compute performance and a much higher power draw. The launch MSRP for the Tesla K20Xm was 7,699 USD, while the RTX A2000 Mobile has no recorded launch MSRP in the database.