NVIDIA GeForce RTX 3070 Mobile vs NVIDIA Tesla K20m Comparison

The NVIDIA GeForce RTX 3070 Mobile and the NVIDIA Tesla K20m represent two vastly different eras of GPU design, with the former being a modern laptop part and the latter a legacy compute accelerator. The data shows a decisive generational gap, with the RTX 3070 Mobile winning both head-to-head benchmark comparisons by a substantial margin. This analysis will explore the architectural chasm between these two GPUs, interpret their benchmark scores, and determine which use cases each card is best suited for based solely on the provided figures.

Head-to-Head Benchmarks

The benchmark results are unequivocal in favor of the GeForce RTX 3070 Mobile. In the Geekbench OpenCL compute test, the RTX 3070 Mobile scores a staggering 92,939 points, while the Tesla K20m manages only 16,241 points. This represents a delta of 472.2%, meaning the RTX 3070 Mobile delivers a performance advantage of nearly five times over the K20m in this workload.

The Vulkan graphics test tells a similar, though slightly less extreme, story. The RTX 3070 Mobile achieves 86,768 points, while the Tesla K20m trails significantly with 21,936 points. This 295.6% delta shows that the modern architecture's advantage is not limited to compute tasks but extends into API-level graphics performance as well. The data clearly indicates that the RTX 3070 Mobile is in a completely different performance class.

These results are further contextualized by the average benchmark scores for each card. The RTX 3070 Mobile has an average benchmark score of 20,534, while the Tesla K20m sits at 19,089. Interestingly, the Tesla K20m's percentile rank of 64th is nearly identical to the RTX 3070 Mobile's 65th percentile, despite the massive score differences in individual tests. This suggests that while the K20m is outclassed by the newer card, it still holds its own against the broader GPU landscape, likely due to its compute-focused heritage.

Architecture Differences

The architectural disparity between these two GPUs is profound, explaining the benchmark results. The RTX 3070 Mobile is built on the Ampere architecture using an 8 nm process from Samsung, while the Tesla K20m uses the older Kepler architecture on a 28 nm process from TSMC. This generational leap in manufacturing technology allows the RTX 3070 Mobile to pack 17,400 million transistors into a 392 mm² die, resulting in a transistor density of 44.4M / mm². The Tesla K20m, by contrast, has fewer transistors (7,080 million) but a larger die (561 mm²), yielding a much lower density of just 12.6M / mm².

The core configurations are equally divergent. The RTX 3070 Mobile features 5,120 shading units, 160 TMUs, and 80 ROPs, alongside 40 dedicated ray tracing cores and 160 tensor cores. The Tesla K20m has 2,496 shading units, 208 TMUs, and 40 ROPs, but lacks dedicated ray tracing and tensor cores entirely. This means the RTX 3070 Mobile can handle modern workloads like real-time ray tracing and AI-accelerated tasks, while the K20m is purely a traditional compute device.

Memory subsystems also differ significantly. The RTX 3070 Mobile uses 8 GB of GDDR6 memory on a 256-bit bus, delivering 448.0 GB/s of bandwidth. The Tesla K20m uses 5 GB of GDDR5 on a 320-bit bus, providing only 208.0 GB/s. Despite having a wider bus, the K20m's older memory technology results in less than half the bandwidth of the RTX 3070 Mobile. The RTX 3070 Mobile also supports a much newer feature set, including DirectX 12 Ultimate (12_2) and Vulkan 1.4, compared to the K20m's DirectX 12 (11_0) and Vulkan 1.2.175.

Where Each One Wins

Based on the benchmark data, the GeForce RTX 3070 Mobile wins in every measured category. Its dominance in both OpenCL (472.2% faster) and Vulkan (295.6% faster) makes it the clear choice for any workload that can leverage these APIs. The presence of tensor and ray tracing cores suggests it would excel in modern gaming, 3D rendering, and machine learning inference tasks, though no specific benchmark data for those workloads is provided.

The Tesla K20m, however, has its own niche. Its launch MSRP of 3,199 USD placed it in the professional compute segment, and its architecture, despite being older, was designed for high-performance scientific computing. The data shows it is still competitive with modern mid-range parts, as its nearest rivals include the NVIDIA GeForce RTX 4050 Mobile (avg score 19,049, delta 0.2%) and the AMD Radeon RX 6600 (avg score 19,036, delta 0.3%). This indicates that while it cannot match the RTX 3070 Mobile, it remains a capable compute processor for tasks that are not dependent on modern API features or high memory bandwidth.

The RTX 3070 Mobile's nearest rivals, including the Intel Arc B570 (avg score 20,556, delta -0.1%) and the Intel Arc A750 (avg score 20,582, delta -0.2%), shows it sits in a competitive modern laptop segment. The K20m's lack of display outputs and dual-slot form factor also make it unsuitable for consumer desktop use, while the RTX 3070 Mobile's portable device-dependent outputs are designed for laptops.

FAQ

Q: How much faster is the RTX 3070 Mobile in OpenCL compute?

A: The RTX 3070 Mobile scores 92,939 in Geekbench OpenCL, which is 472.2% higher than the Tesla K20m's score of 16,241.

Q: Does the Tesla K20m support modern graphics APIs like ray tracing?

A: No. The Tesla K20m has no dedicated ray tracing or tensor cores, and its DirectX support is limited to version 12 (11_0), whereas the RTX 3070 Mobile supports DirectX 12 Ultimate (12_2) and has 40 RT cores.

Q: Which card has higher memory bandwidth?

A: The RTX 3070 Mobile, with 448.0 GB/s from 8 GB of GDDR6 on a 256-bit bus. The Tesla K20m offers only 208.0 GB/s from 5 GB of GDDR5 on a 320-bit bus.

Q: Are these two cards in the same performance percentile?

A: Yes, nearly so. The RTX 3070 Mobile is in the 65th percentile of all GPUs, while the Tesla K20m is in the 64th percentile, despite the massive delta in their benchmark scores.

Q: What is the process node difference?

A: The RTX 3070 Mobile is built on an 8 nm process from Samsung, while the Tesla K20m uses a 28 nm process from TSMC. This contributes to a transistor density of 44.4M / mm² for the former versus 12.6M / mm² for the latter.

Q: Can the Tesla K20m be used for gaming?

A: The data suggests it is not ideal. It has no display outputs, meaning it cannot directly connect to a monitor, and its Vulkan score of 21,936 is far lower than the RTX 3070 Mobile's 86,768.

The Verdict

The data makes a clear case for the GeForce RTX 3070 Mobile as the superior performer in almost every conceivable scenario. Its benchmark scores are nearly five times higher in compute and four times higher in graphics, its memory bandwidth is more than double, and its feature set is a generation ahead. For any user seeking maximum performance in modern applications, gaming, or compute tasks, the RTX 3070 Mobile is the only logical choice based on these metrics.

The Tesla K20m, however, is not without merit. Its 64th percentile rank proves it remains relevant for certain professional workloads, especially those that rely on raw FP32 compute (3.524 TFLOPS) without needing modern API features. Its dual-slot design, 225 W TDP, and 1x 6-pin + 1x 8-pin power connectors indicate it was built for a server or workstation environment where it can be left to run compute tasks continuously. It is a legacy part that still competes with modern mid-range cards, as shown by its rival scores, but it cannot match the sheer performance of the RTX 3070 Mobile. The choice is clear: for modern performance, choose the RTX 3070 Mobile; for legacy high-throughput compute with no display output, the Tesla K20m remains a functional option.

Specification Differences

The RTX 3070 Mobile and Tesla K20m differ in nearly every key specification. The RTX 3070 Mobile uses the GA104 chip on an 8 nm process, while the K20m uses the GK110 chip on a 28 nm process. The RTX 3070 Mobile has 17,400 million transistors on a 392 mm² die, while the K20m has 7,080 million on a 561 mm² die, resulting in a transistor density of 44.4M / mm² versus 12.6M / mm². The RTX 3070 Mobile has a base clock of 1110 MHz and boost of 1560 MHz, while the K20m has no listed clocks. Memory differs: 8 GB GDDR6 at 448.0 GB/s versus 5 GB GDDR5 at 208.0 GB/s. The RTX 3070 Mobile has 5,120 shading units, 160 TMUs, 80 ROPs, 40 RT cores, and 160 tensor cores, while the K20m has 2,496 shading units, 208 TMUs, and 40 ROPs. The RTX 3070 Mobile's TDP is 115 W with no power connectors, while the K20m has a 225 W TDP and requires 1x 6-pin + 1x 8-pin connectors. The bus interface is PCIe 4.0 x16 versus PCIe 2.0 x16. The RTX 3070 Mobile supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the K20m supports DirectX 12 (11_0) and Vulkan 1.2.175. The K20m is dual-slot, has no display outputs, and is 267 mm long, while the RTX 3070 Mobile's dimensions are portable-device dependent.