AMD Radeon RX 7600S vs NVIDIA Tesla K40m Comparison

The NVIDIA Tesla K40m and the AMD Radeon RX 7600S represent two very different generations of GPU design, separated by nearly a decade of process technology and architectural evolution. The Tesla K40m is a dual-slot, end-of-life compute accelerator from the Kepler era, built for professional datacenter workloads with no display outputs. The RX 7600S is an active, integrated mobile GPU from the RDNA 3.0 family, designed for laptops and portable devices. Their only shared benchmark in the database is Geekbench OpenCL, and that single data point reveals a dramatic performance gap: the RX 7600S scores 68,012, while the Tesla K40m scores 19,885. This translates to the AMD part delivering a 70.8% higher score, a massive margin that defines the entire head-to-head comparison.

Head-to-Head Benchmarks

The sole direct comparison available in the database is the Geekbench OpenCL test, a compute-oriented workload that stresses raw shader throughput and memory bandwidth. The AMD Radeon RX 7600S produced a score of 68,012, while the NVIDIA Tesla K40m trailed far behind at 19,885. The recorded delta percentage is -70.8% for the Tesla K40m, meaning the older NVIDIA card scored roughly 29.2% of the AMD card's result. This is not a close contest. The RX 7600S outperforms the Tesla K40m by a factor of 3.42 in this specific test, which is consistent with the massive generational leap in architecture and clock speeds between 2013 and 2023.

The Tesla K40m does have a higher percentile ranking relative to all GPUs in the database: it sits at the 65th percentile, while the RX 7600S sits at the 60th percentile. This is a curious divergence. Despite losing decisively in the actual benchmark, the Tesla K40m places higher in the overall distribution of all GPUs. This likely reflects the fact that the RX 7600S has many more benchmark entries, including lower-performing DirectX and Passmark tests, which pull its average down. The Tesla K40m's average benchmark score is 19,885, based on its single Geekbench OpenCL result, while the RX 7600S has an average of 16,696 across ten different benchmarks. The average score for the RX 7600S is lower than its OpenCL result because its Passmark DirectX scores are far smaller (e.g., 65 for DirectX 12, 74 for DirectX 10, and 140 for DirectX 11), which drags the mean down substantially.

Looking at the nearest rivals for each card provides context for how each sits in the broader market. The Tesla K40m's closest competitor is the AMD FirePro W7000, which scores 19,905 with a delta of -0.1%, meaning the Tesla K40m is essentially tied with that card. The AMD Radeon RX 6650 XT scores 19,765, putting the Tesla K40m 0.6% ahead. The AMD FirePro D300 scores 19,637, and the NVIDIA Quadro K5200 scores 19,602, placing the Tesla K40m 1.3% and 1.4% ahead of those respectively. These are all very small margins, showing that the Tesla K40m is firmly in the mid-range of compute performance for its era.

The RX 7600S's nearest rivals are a different story. The NVIDIA T400 4 GB scores 16,792, which is 0.6% higher than the RX 7600S, making the AMD card slightly slower in this average comparison. The NVIDIA T400 scores 16,508, placing the RX 7600S 1.1% ahead. The NVIDIA GeForce RTX 5090 D V2 scores 16,504, with the RX 7600S 1.2% ahead, and the NVIDIA Tesla M4 scores 16,932, putting the RX 7600S 1.4% behind. Interestingly, the RX 7600S's average benchmark score of 16,696 is far below its stellar OpenCL result of 68,012, which suggests that its OpenCL performance is an outlier on the high end, while its DirectX and Passmark results are more modest.

In terms of wins, the head-to-head data shows the AMD Radeon RX 7600S winning the only shared test, with one win for the RX 7600S and zero for the Tesla K40m. This is a clean sweep in the available data. The margin is so large that no other benchmark is needed to establish which card has superior raw compute throughput in this test. However, it is importantly the OpenCL test is not necessarily representative of gaming or professional rendering workloads, and the two cards are designed for entirely different use cases.

FAQ

Q: Which GPU scored higher in the Geekbench OpenCL benchmark?

A: The AMD Radeon RX 7600S scored 68,012, while the NVIDIA Tesla K40m scored 19,885. The RX 7600S was 70.8% higher, making it the clear winner in this compute test.

Q: How does the Tesla K40m compare to its nearest rivals?

A: The Tesla K40m is nearly identical to the AMD FirePro W7000, which scores 19,905, a delta of -0.1%. It is also 0.6% ahead of the AMD Radeon RX 6650 XT, 1.3% ahead of the AMD FirePro D300, and 1.4% ahead of the NVIDIA Quadro K5200.

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

A: The Tesla K40m has an average benchmark score of 19,885, based on its single OpenCL result. The RX 7600S has an average of 16,696 across ten benchmarks, which includes lower scores in Passmark tests that reduce its overall mean.

Q: Is the RX 7600S always faster than its rivals?

A: No. In the nearest rival comparison, the NVIDIA T400 4 GB scores 16,792, which is 0.6% higher than the RX 7600S's average. The NVIDIA Tesla M4 scores 16,932, putting the RX 7600S 1.4% behind. The RX 7600S is ahead of the NVIDIA T400 and the NVIDIA GeForce RTX 5090 D V2 by 1.1% and 1.2% respectively.

Q: What is the percentile ranking for each card?

A: The Tesla K40m sits at the 65th percentile of all GPUs in the database, while the RX 7600S sits at the 60th percentile. This means the older Tesla card ranks higher in the overall distribution, despite losing the head-to-head OpenCL test.

Q: How many benchmark wins does each card have in the head-to-head comparison?

A: The RX 7600S has one win, and the Tesla K40m has zero. The only shared benchmark, Geekbench OpenCL, was won by the AMD card by a 70.8% margin.

The Verdict

The data points decisively toward the AMD Radeon RX 7600S for raw compute performance in the tested workload. The 68,012 OpenCL score versus 19,885 is not a marginal improvement; it is a 70.8% difference that reflects the fundamental architectural and process node advantages of the newer RDNA 3.0 design. Anyone comparing these two strictly on benchmark scores should choose the RX 7600S without hesitation. The RX 7600S also has a higher FP32 throughput of 15.77 TFLOPS, compared to the Tesla K40m's 5.046 TFLOPS, and a much higher pixel rate of 140.8 GPixel/s versus 52.56 GPixel/s. The texture rates are closer: the RX 7600S delivers 246.4 GTexel/s, while the Tesla K40m delivers 210.2 GTexel/s, but the AMD card still leads.

However, the Tesla K40m has its own advantages that matter for specific use cases. It has 12 GB of GDDR5 memory compared to the RX 7600S's 8 GB of GDDR6, and its memory bus is 384 bits wide versus 128 bits, giving it a higher memory bandwidth of 288.4 GB/s compared to 256.0 GB/s for the AMD card. This could be relevant for workloads that are heavily memory-bound, though the difference is moderate. The Tesla K40m also has a higher percentile ranking at 65 versus 60, which indicates that relative to the entire database, it sits in a slightly stronger position despite its lower absolute score.

For a user choosing between these two, the decision hinges on the application. The RX 7600S is designed for mobile devices, has no power connectors, a TDP of 75 watts, and supports modern APIs like DirectX 12 Ultimate and Vulkan 1.4. It also features 28 ray tracing cores, which the Tesla K40m lacks entirely. The Tesla K40m, by contrast, is a dual-slot accelerator with a TDP of 245 watts, a suggested PSU of 550 watts, and requires external power. It has no display outputs, making it unsuitable for any interactive use. The RX 7600S is the better choice for compute performance, modern feature support, and efficiency. The Tesla K40m is only preferable if the larger memory pool or the specific Kepler-era compute characteristics are required, but the benchmark data strongly favors the AMD card.

Specification Differences

The two cards differ in nearly every measurable specification. The Tesla K40m uses a 28 nm process node from TSMC, while the RX 7600S uses a 6 nm node from the same foundry. The transistor counts differ significantly: the Tesla K40m has 7,080 million transistors on a 561 mm² die, while the RX 7600S has 13,300 million transistors on a much smaller 204 mm² die. This gives the RX 7600S a transistor density of 65.2 million per square millimeter, versus only 12.6 million for the Tesla K40m.

Clock speeds are another major gap. The Tesla K40m has a base clock of 745 MHz and a boost clock of 876 MHz, while the RX 7600S operates at a base of 1500 MHz, a boost of 2200 MHz, and a game clock of 1865 MHz. Memory clocks also differ: the Tesla K40m runs at 1502 MHz with 6 Gbps effective, while the RX 7600S runs at 2000 MHz with 16 Gbps effective. The memory type and bus width differ as well: the Tesla K40m uses 12 GB of GDDR5 on a 384-bit bus, while the RX 7600S uses 8 GB of GDDR6 on a 128-bit bus.

The shader configurations are very different. The Tesla K40m has 2880 shading units, 240 TMUs, and 48 ROPs, while the RX 7600S has 1792 shading units, 112 TMUs, and 64 ROPs. The RX 7600S has 28 ray tracing cores, while the Tesla K40m has none. The RX 7600S also supports FP16 at 31.54 TFLOPS, while the Tesla K40m has no FP16 capability listed.

Power and physical characteristics differ sharply. The Tesla K40m has a TDP of 245 watts, is dual-slot, and is 267 mm long (10.5 inches). The RX 7600S has a TDP of 75 watts, is an IGP (integrated GPU) with no power connectors, and has no listed dimensions. The Tesla K40m has no display outputs, while the RX 7600S has outputs that are dependent on the portable device. The bus interface differs: the Tesla K40m uses PCIe 3.0 x16, while the RX 7600S uses PCIe 4.0 x16.

The API support is a clear generational split. The Tesla K40m supports DirectX 12 (11_1), OpenGL 4.6, and Vulkan 1.2.175. The RX 7600S supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The release dates are 2013-11-21 for the Tesla K40m and 2023-01-03 for the RX 7600S. The Tesla K40m is end-of-life, while the RX 7600S is active. The Tesla K40m has a launch MSRP of 7,699 USD, which is the only pricing information available.

Architecture Differences

The NVIDIA Tesla K40m is built on the Kepler architecture, specifically the GK110B chip. This architecture was designed for high-performance computing and datacenter workloads, which is why the card has no video outputs and is intended for compute-only tasks. The Kepler generation belongs to the Tesla Kxx family, succeeding Tesla Fermi and preceding Tesla Maxwell. The RX 7600S, in contrast, is based on the RDNA 3.0 architecture with the Navi 33 chip, codenamed Hotpink Bonefish. It belongs to the Navi Mobile generation under the RX 7000M series, succeeding Polaris Mobile.

The process node difference is the most fundamental architectural shift. The Tesla K40m uses a 28 nm process, which was state of the art in 2013, while the RX 7600S uses a 6 nm process from TSMC, representing a much denser and more efficient manufacturing technology. This explains the transistor density difference: 12.6 million per square millimeter for the Kepler chip versus 65.2 million for the RDNA 3.0 chip. The smaller die on the RX 7600S (204 mm²) packs nearly twice as many transistors as the larger Kepler die (561 mm²), which reflects the advances in lithography.

The Kepler architecture is known for its focus on FP32 compute throughput, with 2880 shading units arranged in a specific configuration that favors raw math rather than gaming features. The RDNA 3.0 architecture, on the other hand, is a unified design that supports modern features like ray tracing and variable rate shading. The RX 7600S includes 28 dedicated ray tracing cores, which the Tesla K40m lacks entirely. This makes the AMD card far more capable for contemporary workloads that leverage DirectX 12 Ultimate features.

The memory architecture also reflects different design philosophies. The Tesla K40m uses a 384-bit memory bus with GDDR5, which was typical for high-bandwidth compute cards of its era. The RX 7600S uses a 128-bit bus with GDDR6, which achieves lower bandwidth (256.0 GB/s versus 288.4 GB/s) but at a much lower power cost. The Tesla K40m's 12 GB memory capacity is larger than the RX 7600S's 8 GB, which may be relevant for large datasets, but the AMD card compensates with faster effective memory speeds of 16 Gbps versus 6 Gbps.

The power architecture is a major differentiator. The Tesla K40m has a TDP of 245 watts and requires external power connectors, making it a power-hungry component suitable for servers with robust cooling. The RX 7600S has a TDP of only 75 watts, no power connectors, and is classified as an IGP, meaning it is designed to be integrated into a laptop motherboard. This efficiency difference is a direct result of the 6 nm process and the RDNA 3.0 architecture's focus on performance per watt. The API support also reflects the architectural age: the Tesla K40m is limited to DirectX 12 (11_1) and Vulkan 1.2.175, while the RX 7600S supports DirectX 12 Ultimate and Vulkan 1.4, enabling newer rendering techniques.

In summary, the architectural gap between Kepler and RDNA 3.0 is enormous, spanning process technology, transistor density, feature set, and power efficiency. The benchmark data confirms that the newer architecture delivers over three times the OpenCL performance in a fraction of the power envelope.