AMD Radeon RX 7600S vs NVIDIA Tesla K20m Comparison

FAQ

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

A: The NVIDIA Tesla K20m records an average benchmark score of 19089, while the AMD Radeon RX 7600S records an average of 16696. The K20m sits at the 64th percentile of all GPUs, and the RX 7600S sits at the 60th percentile.

Q: Which GPU wins in Geekbench OpenCL performance?

A: The AMD Radeon RX 7600S wins decisively, scoring 68012 against the Tesla K20m's 16241. This represents a delta of -76.1% from the K20m's perspective, meaning the RX 7600S is roughly 4.2 times faster in this workload.

Q: How do the two GPUs compare in Geekbench Vulkan?

A: The AMD Radeon RX 7600S again wins, with a score of 73868 versus the Tesla K20m's 21936. The delta is -70.3%, indicating the RX 7600S is approximately 3.4 times faster in Vulkan compute tasks.

Q: What are the process nodes and transistor counts?

A: The Tesla K20m uses a 28 nm process from TSMC with 7,080 million transistors on a 561 mm² die. The RX 7600S uses a 6 nm process from TSMC with 13,300 million transistors on a 204 mm² die, yielding a much higher transistor density of 65.2M per mm² versus 12.6M per mm².

Q: What are the memory specifications of each card?

A: The Tesla K20m has 5 GB of GDDR5 on a 320-bit bus, delivering 208.0 GB/s bandwidth. The RX 7600S has 8 GB of GDDR6 on a 128-bit bus, delivering 256.0 GB/s bandwidth, despite the narrower bus.

Q: What is the power consumption difference?

A: The Tesla K20m has a TDP of 225 W and requires a dual-slot cooler with 1x 6-pin and 1x 8-pin power connectors plus a 550 W suggested PSU. The RX 7600S has a TDP of 75 W, uses an IGP form factor, and requires no power connectors, with no suggested PSU listed.

Where Each One Wins

The data splits cleanly by workload type. In compute-oriented APIs, the AMD Radeon RX 7600S dominates. Its Geekbench OpenCL score of 68012 is more than four times the Tesla K20m's 16241. Its Geekbench Vulkan score of 73868 is more than three times the K20m's 21936. The RX 7600S also brings modern API support, including DirectX 12 Ultimate (12_2), Vulkan 1.4, and 28 ray tracing cores, which open up feature sets the older Tesla simply cannot access.

The NVIDIA Tesla K20m wins in the overall average benchmark comparison, however. Its average score of 19089 edges out the RX 7600S's 16696, a difference driven by the fact that the RX 7600S has several Passmark scores that pull its average down, including a Passmark DirectX 9 score of 211, a DirectX 10 score of 74, and a DirectX 11 score of 140. The K20m has only two recorded benchmarks, both compute tests, and both are relatively consistent. So the K20m holds a narrow lead in the aggregate database average, even though the RX 7600S is far ahead in the shared compute tests.

Where each one wins depends on the metric. If the task is raw compute throughput in OpenCL or Vulkan, the RX 7600S is the clear choice. If the task is simply comparing the database average across all recorded benchmarks, the Tesla K20m comes out slightly ahead. The RX 7600S also wins on memory bandwidth (256.0 GB/s versus 208.0 GB/s), pixel rate (140.8 GPixel/s versus 36.71 GPixel/s), and texture rate (246.4 GTexel/s versus 146.8 GTexel/s), while the K20m has more shading units (2496 versus 1792) and more texture mapping units (208 versus 112).

Architecture Differences

The two GPUs come from fundamentally different design eras. The Tesla K20m is built on NVIDIA's Kepler architecture, specifically the GK110 chip, and belongs to the Tesla Kepler (Kxx) generation. It uses a 28 nm process at TSMC, packs 7,080 million transistors into a 561 mm² die, and has a transistor density of 12.6M per mm². The RX 7600S is built on AMD's RDNA 3.0 architecture with the Navi 33 chip, codenamed Hotpink Bonefish, and belongs to the Navi Mobile (RX 7000M) generation. It uses a 6 nm process at TSMC, packs 13,300 million transistors into a 204 mm² die, and achieves a transistor density of 65.2M per mm². The density difference is stark: the RX 7600S crams over five times more transistors per square millimeter.

The compute pipelines differ as well. The Tesla K20m has 2496 shading units, 208 TMUs, and 40 ROPs. The RX 7600S has 1792 shading units, 112 TMUs, and 64 ROPs. Although the RX 7600S has fewer shading units and TMUs, it has more ROPs and adds 28 ray tracing cores, which the Kepler architecture lacks entirely. The RX 7600S also supports FP16 compute at 31.54 TFLOPS with a 2:1 ratio, while the K20m has no listed FP16 capability. The K20m's FP32 throughput is 3.524 TFLOPS, while the RX 7600S reaches 15.77 TFLOPS, a 4.5-fold advantage.

API support also reflects the generational gap. The K20m supports DirectX 12 (11_0), 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 RX 7600S also has a portable-device-dependent display output, while the K20m has no display outputs at all, reflecting its compute-focused accelerator role.

Specification Differences

The most visible difference is power and form factor. The Tesla K20m is a dual-slot card rated at 225 W TDP, requiring 1x 6-pin and 1x 8-pin power connectors and a 550 W suggested PSU. It measures 267 mm or 10.5 inches in length. The RX 7600S is an IGP (integrated graphics processor) rated at 75 W TDP, requires no power connectors, and has no listed dimensions. This makes the RX 7600S far more suitable for mobile integration, while the K20m is a discrete accelerator card.

Memory configurations also differ. The K20m has 5 GB of GDDR5 on a 320-bit bus with 208.0 GB/s bandwidth and a memory clock of 1300 MHz (5.2 Gbps effective). The RX 7600S has 8 GB of GDDR6 on a 128-bit bus with 256.0 GB/s bandwidth and a memory clock of 2000 MHz (16 Gbps effective). The RX 7600S achieves higher bandwidth despite a much narrower bus, thanks to faster GDDR6 memory.

Clock behavior differs as well. The K20m has no listed base or boost clock, only a memory clock. The RX 7600S lists a base clock of 1500 MHz, a boost clock of 2200 MHz, and a game clock of 1865 MHz. The bus interface also differs: the K20m uses PCIe 2.0 x16, while the RX 7600S uses PCIe 4.0 x16.

Production status and release timing differ sharply. The K20m was released on 2013-01-04, is end-of-life, and had a launch MSRP of 3,199 USD. Its predecessor is Tesla Fermi and its successor is Tesla Maxwell. The RX 7600S was released on 2023-01-03, is active, has no launch MSRP listed, and its predecessor is Polaris Mobile with no successor listed. The K20m belongs to NVIDIA's accelerator lineup, while the RX 7600S belongs to AMD's Radeon RX 7000 series.

Head-to-Head Benchmarks

The database records two shared benchmarks between these GPUs: Geekbench OpenCL and Geekbench Vulkan. The AMD Radeon RX 7600S wins both.

In Geekbench OpenCL, the RX 7600S scores 68012 against the K20m's 16241. The delta is -76.1%, meaning the K20m trails by more than three-quarters. In absolute terms, the RX 7600S delivers roughly 4.2 times the OpenCL score. This is the largest relative gap in the head-to-head data.

In Geekbench Vulkan, the RX 7600S scores 73868 against the K20m's 21936. The delta is -70.3%, meaning the K20m trails by about 70%. In absolute terms, the RX 7600S delivers roughly 3.4 times the Vulkan score. The K20m's Vulkan support is limited to version 1.2.175, while the RX 7600S supports Vulkan 1.4, which may explain some of the gap.

The K20m does not win either shared benchmark. Its wins come only in the aggregate average, where its two compute scores (16241 and 21936, averaging 19089) compare favorably to the RX 7600S's ten scores, which average 16696. The RX 7600S's Passmark results are notably low in legacy DirectX tests: DirectX 9 at 211, DirectX 10 at 74, DirectX 11 at 140, and DirectX 12 at 65. These drag down its average despite strong compute scores. The K20m's nearest rivals include the GeForce RTX 4050 Mobile (19049, delta 0.2%), the Radeon RX 6600 (19036, delta 0.3%), and the Quadro K6000 (19030, delta 0.3%), with the GeForce GTX 780 slightly ahead at 19164 (delta -0.4%). The RX 7600S's nearest rivals include the NVIDIA T400 4 GB (16792, delta -0.6%), the NVIDIA T400 (16508, delta 1.1%), and the GeForce RTX 5090 D V2 (16504, delta 1.2%), with the Tesla M4 ahead at 16932 (delta -1.4%). These rival groups show that both GPUs sit in different performance neighborhoods, with the K20m clustering near desktop-class cards and the RX 7600S clustering near entry-level professional cards.

The Verdict

The data supports a clear split. Anyone selecting a GPU for OpenCL or Vulkan compute workloads should choose the AMD Radeon RX 7600S. It wins both shared benchmarks by massive margins, offers modern API support including DirectX 12 Ultimate and Vulkan 1.4, includes 28 ray tracing cores, and consumes only 75 W with no external power connectors. Its FP32 throughput of 15.77 TFLOPS is over four times the K20m's 3.524 TFLOPS, and its memory bandwidth of 256.0 GB/s exceeds the K20m's 208.0 GB/s.

The NVIDIA Tesla K20m should be chosen only when the aggregate database average is the primary metric. Its average score of 19089 beats the RX 7600S's 16696, and it sits at the 64th percentile versus the RX 7600S's 60th. It also has more shading units (2496 versus 1792) and more TMUs (208 versus 112), which may matter in workloads that scale with those resources rather than with raw FP32 throughput. However, the K20m is end-of-life, was released in 2013, has no display outputs, requires a 225 W TDP with dual-slot cooling and two power connectors, and had a launch MSRP of 3,199 USD. Its OpenCL and Vulkan scores are far lower, and it lacks ray tracing cores and FP16 support.

The verdict follows the data: the RX 7600S is the modern choice for compute-heavy tasks and mobile integration, while the K20m retains a narrow lead only in the overall benchmark average and in raw shading unit count. The RX 7600S wins both head-to-head tests, has a newer architecture, a smaller and more power-efficient design, and a higher memory bandwidth. The K20m's only advantages are its higher average score, higher percentile ranking, and larger number of shading units and TMUs. For most practical workloads, the RX 7600S is the stronger option.