NVIDIA A100 SXM4 40 GB vs NVIDIA RTX 6000D Comparison

The NVIDIA RTX 6000D and NVIDIA A100 SXM4 40 GB represent two distinct generations of NVIDIA's professional computing lineup, separated by five years of architectural evolution. The RTX 6000D, built on the Blackwell 2.0 architecture, is an active production card with a launch MSRP of 8,565 USD, while the A100 SXM4 40 GB is an end-of-life Ampere server module. Benchmark data shows the RTX 6000D holds a decisive lead in aggregate performance, with an average benchmark score of 195,964 compared to the A100's 187,147—a 4.7% advantage according to nearestRivals data. Both cards occupy the 98th percentile among all GPUs, placing them at the top tier of computing hardware, but their design philosophies differ sharply: the RTX 6000D is a dual-slot workstation card with display outputs, while the A100 is a compute-focused SXM module with no video outputs. The head-to-head benchmark results reveal a single test where the RTX 6000D outperforms the A100 by 93.1% in Geekbench OpenCL, underscoring the generational leap in raw compute capability.

FAQ

Q: How does the average benchmark score of the RTX 6000D compare to the A100 SXM4 40 GB?

A: The RTX 6000D achieves an average benchmark score of 195,964, while the A100 SXM4 40 GB scores 187,147. According to nearestRivals data, this represents a 4.7% advantage for the RTX 6000D, though the A100's own nearestRivals list shows it trailing the RTX 5000 Ada Generation by 1.3% and leading the RTX PRO 5000 Blackwell by 2.8%.

Q: What are the memory specifications of each card?

A: The RTX 6000D features 84 GB of GDDR7 memory on a 448-bit bus, delivering 1.40 TB/s of bandwidth. The A100 SXM4 40 GB uses 40 GB of HBM2e memory on a much wider 5120-bit bus, achieving 1.56 TB/s of bandwidth—the A100 actually has higher memory bandwidth despite having less than half the capacity.

Q: Which card has a higher FP32 compute throughput?

A: The RTX 6000D delivers 97.04 TFLOPS of FP32 performance, which is nearly five times the A100's 19.49 TFLOPS. This is a massive generational improvement, reflecting the Blackwell architecture's focus on raw compute density.

Q: What is the process node difference between the two GPUs?

A: The RTX 6000D is fabricated on TSMC's 5 nm process, while the A100 SXM4 40 GB uses TSMC's 7 nm node. The newer process allows the RTX 6000D to pack 92,200 million transistors into a 750 mm² die, compared to the A100's 54,200 million transistors on a larger 826 mm² die.

Q: Do both cards support the same APIs?

A: No. The RTX 6000D supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, making it suitable for graphics workloads. The A100 SXM4 40 GB lists null values for DirectX, OpenGL, and Vulkan, reflecting its compute-only design with no display outputs.

Q: What is the power consumption difference?

A: The RTX 6000D has a TDP of 600 W with a suggested PSU of 1000 W, while the A100 SXM4 40 GB draws 400 W with a suggested PSU of 800 W. The RTX 6000D requires a 1x 16-pin power connector, whereas the A100 SXM module uses no external power connectors.

Where Each One Wins

The RTX 6000D is the clear winner for graphics-intensive workloads. Its support for DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, combined with 4x DisplayPort 2.1b outputs, makes it a viable option for visualization, rendering, and real-time graphics tasks. The A100 SXM4 40 GB, with no display outputs and null API support, cannot handle any graphics output. In compute-heavy scenarios, the RTX 6000D also dominates FP32 operations, delivering 97.04 TFLOPS versus the A100's 19.49 TFLOPS—a 4.98x advantage. However, the A100 wins in memory bandwidth, with 1.56 TB/s compared to the RTX 6000D's 1.40 TB/s, which could benefit certain memory-bound HPC workloads. The A100 also has a lower TDP at 400 W versus 600 W, making it more power-efficient per watt for sustained server deployments. For FP16 workloads, the A100's 77.97 TFLOPS (4:1 ratio) is competitive, though the RTX 6000D matches its FP32 output at 97.04 TFLOPS with a 1:1 ratio. The RTX 6000D wins in texture rate (1,516.3 GTexel/s vs 609.1 GTexel/s) and pixel rate (466.6 GPixel/s vs 225.6 GPixel/s), reinforcing its graphics superiority.

Architecture Differences

The RTX 6000D is built on the Blackwell 2.0 architecture using the GB202 chip, a 5 nm design from TSMC. It packs 92,200 million transistors into a 750 mm² die, achieving a transistor density of 122.9 million per mm². The A100 SXM4 40 GB uses the older Ampere architecture with the GA100 chip, fabricated on TSMC's 7 nm process. Its 54,200 million transistors occupy a larger 826 mm² die, resulting in a lower density of 65.6 million per mm². The RTX 6000D features 19,968 shading units, 624 TMUs, and 192 ROPs, along with 156 RT cores and 624 tensor cores. The A100 has 6,912 shading units, 432 TMUs, and 160 ROPs, with 432 tensor cores and no RT cores listed. The Blackwell architecture introduces a 1:1 FP16 to FP32 ratio, whereas Ampere uses a 4:1 ratio, meaning the RTX 6000D can maintain full FP16 throughput without sacrificing FP32 performance. The RTX 6000D also supports PCIe 5.0 x16, doubling the bandwidth of the A100's PCIe 4.0 x16 interface.

Specification Differences

The two cards differ across nearly every specification category. The RTX 6000D has a base clock of 1992 MHz and a boost clock of 2430 MHz, while the A100 runs at 1095 MHz base and 1410 MHz boost—the RTX 6000D's clocks are roughly 80% higher. Memory configurations diverge significantly: 84 GB GDDR7 on a 448-bit bus versus 40 GB HBM2e on a 5120-bit bus. Shading units favor the RTX 6000D at 19,968 versus 6,912, and TMUs are 624 versus 432. ROPs are 192 versus 160. The RTX 6000D has 156 RT cores; the A100 has none. Tensor cores are 624 versus 432. Pixel rate is 466.6 GPixel/s versus 225.6 GPixel/s, and texture rate is 1,516.3 GTexel/s versus 609.1 GTexel/s. FP32 compute is 97.04 TFLOPS versus 19.49 TFLOPS. FP16 compute is 97.04 TFLOPS (1:1) versus 77.97 TFLOPS (4:1). TDP is 600 W versus 400 W. The RTX 6000D is dual-slot with a 1x 16-pin connector, while the A100 is an SXM module with no connectors. Bus interface is PCIe 5.0 x16 versus PCIe 4.0 x16. The RTX 6000D has 4x DisplayPort 2.1b outputs; the A100 has none. Dimensions: the RTX 6000D measures 304 mm x 137 mm x 40 mm; the A100 has no listed dimensions. Production status is Active versus End-of-life. Release dates are July 2025 versus May 2020. The RTX 6000D's predecessor is Workstation Ada; the A100's is Tesla Turing, with a successor of Server Ada.

Head-to-Head Benchmarks

The only shared benchmark between the two cards is Geekbench OpenCL, where the RTX 6000D scores 388,405 against the A100 SXM4 40 GB's 201,096. This translates to a 93.1% delta in favor of the RTX 6000D, meaning the newer card nearly doubles the A100's OpenCL performance. This massive gap is consistent with the architectural differences: the RTX 6000D's 97.04 TFLOPS FP32 throughput is 4.98x higher, and its shading unit count of 19,968 is 2.89x greater than the A100's 6,912. The A100's only published benchmark victory is in Geekbench Vulkan, where it scores 173,198—a test the RTX 6000D does not appear in. In aggregate, the RTX 6000D's average benchmark score of 195,964 is 4.7% higher than the A100's 187,147, per nearestRivals data. However, the A100's closest rival comparison shows it beating the RTX 5000 Ada Generation by 1.3% and the RTX PRO 5000 Blackwell by 2.8%, while the RTX 6000D leads the same RTX 5000 Ada by 6.1% and trails the A100 PCIe 80 GB by 5.4%. The RTX 6000D also holds a 0.8% edge over the Tesla V100S PCIe 32 GB, whereas the A100 trails that same card by 3.7%. These deltas place the RTX 6000D firmly ahead in raw compute, though the A100's higher memory bandwidth (1.56 TB/s vs 1.40 TB/s) suggests it retains an edge in bandwidth-sensitive applications.