NVIDIA GB10 vs NVIDIA H20 Comparison

Head-to-Head Benchmarks

The recorded data reveals an unusual comparison scenario. The NVIDIA GB10 has two benchmark entries in the database: a Geekbench OpenCL score of 120,137 and a Geekbench Vulkan score of 114,648. These produce an average benchmark score of 117,393 and place the GB10 in the 95th percentile among all GPUs. The NVIDIA H20, by contrast, has no benchmark entries at all. Its average benchmark score is recorded as 0, and its percentile ranking sits at 50. The absence of recorded measurements for the H20 means no direct head-to-head benchmark scores exist for these two server accelerators.

Without paired test scores, the nearest-rival comparisons for the GB10 provide useful context. The GB10's average score of 117,393 places it 0.3% ahead of the NVIDIA RTX 4000 SFF Ada Generation, which averages 117,088. Against the AMD Radeon PRO W7700, the GB10 trails by 1.3%, as that card averages 118,976. The GB10 leads the NVIDIA Tesla V100 SXM2 16 GB by 2.6% (114,395 average) and the NVIDIA RTX A5500 Mobile by 3% (113,944 average). These deltas are modest, indicating the GB10 sits in a competitive performance band, slightly above older server parts and slightly below a recent workstation card.

The H20's database entry contains no nearest rivals, no benchmark scores, and no percentile context beyond the 50th percentile baseline. The data indicates that the H20's performance characteristics cannot be quantified through the same benchmark suite. The FP32 compute rating for the H20 is 39.54 TFLOPS, while the GB10 delivers 29.71 TFLOPS. For FP16, the H20 reaches 79.07 TFLOPS with a 2:1 ratio, whereas the GB10 delivers 29.71 TFLOPS with a 1:1 ratio. These specification-level figures suggest the H20 has higher peak compute throughput, but no measured benchmark confirms how that translates into real-world application performance.

The GB10's pixel rate is 116.1 GPixel/s compared to the H20's 47.52 GPixel/s. The texture rates differ similarly: 928.5 GTexel/s for the GB10 versus 617.8 GTexel/s for the H20. These rasterization metrics favor the GB10, but both parts are server-oriented accelerators with no display outputs typical of their class. The H20 has no display outputs at all, while the GB10 includes one HDMI port. The absence of benchmark data for the H20 means the analysis must rely on architectural and specification differences rather than direct measured performance.

FAQ

Q: Does the NVIDIA GB10 have any recorded benchmark scores?

A: Yes. The GB10 scores 120,137 in Geekbench OpenCL and 114,648 in Geekbench Vulkan, producing an average benchmark score of 117,393.

Q: Does the NVIDIA H20 have any recorded benchmark scores?

A: No. The H20 has an empty benchmarks array, an average benchmark score of 0, and a 50th percentile ranking among all GPUs.

Q: How does the GB10 compare to its nearest rivals?

A: The GB10's average score of 117,393 is 0.3% higher than the RTX 4000 SFF Ada Generation, 1.3% lower than the Radeon PRO W7700, 2.6% higher than the Tesla V100 SXM2 16 GB, and 3% higher than the RTX A5500 Mobile.

Q: What is the memory configuration difference between the two?

A: The GB10 uses 128 GB of LPDDR5X on a 256-bit bus with 273.2 GB/s bandwidth. The H20 uses 96 GB of HBM3 on a 6144-bit bus with 4.03 TB/s bandwidth.

Q: Which GPU has more shading units?

A: The H20 has 9,984 shading units, while the GB10 has 6,144. The H20 also has 312 tensor cores and 312 texture mapping units, versus 384 tensor cores and 384 TMUs for the GB10.

Q: What are the power requirements listed for each?

A: The GB10 has a TDP of 140 W with a suggested PSU of 300 W. The H20 has a TDP of 500 W with a suggested PSU of 900 W.

Where Each One Wins

The GB10 wins in rasterization-related specifications. Its pixel rate of 116.1 GPixel/s more than doubles the H20's 47.52 GPixel/s. The GB10's texture rate of 928.5 GTexel/s exceeds the H20's 617.8 GTexel/s. The GB10 also has more ROPs (48 versus 24) and more TMUs (384 versus 312). These figures indicate the GB10 is better equipped for workloads that depend on pixel and texture throughput, such as graphics rendering or framebuffer operations.

The GB10 also wins on memory capacity, offering 128 GB versus the H20's 96 GB. Its memory type is LPDDR5X, which operates at 1067 MHz with 8.5 Gbps effective speed. The GB10 includes one HDMI output, while the H20 has no display outputs. For systems requiring a video output, the GB10 provides that capability directly.

The H20 wins in compute throughput. Its FP32 rating of 39.54 TFLOPS surpasses the GB10's 29.71 TFLOPS by roughly one-third. In FP16, the H20's 79.07 TFLOPS more than doubles the GB10's 29.71 TFLOPS. The H20's memory bandwidth of 4.03 TB/s is dramatically higher than the GB10's 273.2 GB/s, a difference driven by the HBM3 memory type and the 6144-bit bus width. The H20 also has more shading units (9,984 versus 6,144).

The H20 wins on clock speeds. Its base clock is 1830 MHz and boost clock is 1980 MHz, compared to the GB10's 1665 MHz base and 2418 MHz boost. The GB10 has a higher boost clock, but the H20's base clock is higher. The H20's memory clock of 1313 MHz exceeds the GB10's 1067 MHz.

The GB10 launches with a smaller physical footprint. Its die size is 382 mm², less than half the H20's 814 mm². The GB10's dimensions are 150 mm by 51 mm by 150 mm, and it uses an IGP slot width. The H20 uses an SXM Module slot width with no recorded dimensions.

Specification Differences

The two accelerators differ across nearly every specification field. The GB10 uses the GB20B chip with Blackwell 2.0 architecture and belongs to the Server Blackwell (Bxx) generation. The H20 uses the GH100 chip with Hopper architecture and belongs to the Server Hopper (Hxx) generation. Both are built on a 5 nm process at TSMC, but the H20's transistor count is recorded as 80,000 million with a density of 98.3M per mm², while the GB10's transistor count is unknown.

Memory configurations diverge sharply. The GB10 has 128 GB of LPDDR5X on a 256-bit bus with 273.2 GB/s bandwidth. The H20 has 96 GB of HBM3 on a 6144-bit bus with 4.03 TB/s bandwidth. The GB10's memory clock is 1067 MHz (8.5 Gbps effective), and the H20's is 1313 MHz (5.3 Gbps effective).

Core counts differ in every category. The GB10 has 6,144 shading units, 384 TMUs, 48 ROPs, 48 RT cores, and 384 tensor cores. The H20 has 9,984 shading units, 312 TMUs, 24 ROPs, no recorded RT cores, and 312 tensor cores. The GB10's pixel rate is 116.1 GPixel/s and texture rate is 928.5 GTexel/s. The H20's pixel rate is 47.52 GPixel/s and texture rate is 617.8 GTexel/s.

Power and physical specifications also differ. The GB10 has a TDP of 140 W, a suggested PSU of 300 W, an IGP slot width, no power connectors, and a 150 mm length, 51 mm height, and 150 mm width. The H20 has a TDP of 500 W, a suggested PSU of 900 W, an SXM Module slot width, no recorded power connectors, and no recorded dimensions. Both use PCIe 5.0 x16 bus interfaces.

The GB10 has a launch MSRP of 3,999 USD. The H20 has no recorded launch MSRP. The GB10's release date is October 14, 2025, while the H20's is January 31, 2024. The GB10 lists Server Hopper as its predecessor and Server Rubin as its successor. The H20 lists Server Ada as its predecessor and Server Blackwell as its successor.

Architecture Differences

The architectural split is clear. The GB10 is built on Blackwell 2.0, the newest architecture in this comparison, and belongs to the Server Blackwell generation. The H20 is built on Hopper, the previous generation, and belongs to the Server Hopper generation. The GB10's successor is Server Rubin, meaning it represents the current Blackwell server line. The H20's successor is Server Blackwell, which is the generation the GB10 belongs to.

The chip designs reflect different priorities. The GB10 uses the GB20B chip with a 382 mm² die size. The H20 uses the GH100 chip with an 814 mm² die size. The H20's larger die accommodates 80,000 million transistors at a density of 98.3M per mm². The GB10's transistor count is unknown, but its smaller die suggests a more integrated, lower-power design.

Compute ratios differ fundamentally. The GB10's FP16 performance is 29.71 TFLOPS at a 1:1 ratio with FP32, meaning it treats FP16 and FP32 with equal throughput. The H20's FP16 performance is 79.07 TFLOPS at a 2:1 ratio, meaning it doubles FP16 throughput relative to FP32. This indicates the H20's tensor and compute pipelines are optimized for reduced-precision workloads, while the GB10 maintains symmetric precision handling.

Memory architecture reflects different design goals. The H20's HBM3 memory with a 6144-bit bus is engineered for massive bandwidth, reaching 4.03 TB/s. The GB10's LPDDR5X on a 256-bit bus delivers 273.2 GB/s, a fraction of the H20's throughput. The H20's memory clock of 1313 MHz is higher than the GB10's 1067 MHz, but the effective data rates differ (5.3 Gbps versus 8.5 Gbps), indicating different signaling technologies.

The GB10 includes 48 RT cores, while the H20 has no recorded RT core count. This suggests the GB10 carries dedicated ray tracing hardware, whereas the H20's architecture does not emphasize that feature. Both parts list no DirectX, OpenGL, or Vulkan API support, consistent with server accelerators that rely on compute APIs rather than graphics APIs.

The Verdict

The database shows a clear split between the two accelerators. The GB10 is the only one with measured benchmark results. Its average score of 117,393 places it in the 95th percentile of all GPUs, and its nearest rivals are all within a 3% performance band. The H20 has no benchmark data, so its actual performance cannot be compared directly. This absence of measurements is itself a significant finding: the H20's database entry lacks the verification that benchmark scores provide.

For workloads that depend on rasterization throughput, the GB10 is the stronger choice. Its pixel rate of 116.1 GPixel/s and texture rate of 928.5 GTexel/s far exceed the H20's corresponding rates of 47.52 GPixel/s and 617.8 GTexel/s. The GB10's 48 ROPs and 384 TMUs provide more fixed-function graphics hardware. Its 128 GB memory capacity also exceeds the H20's 96 GB, which matters for data sets that require large resident working sets.

For compute-heavy workloads that rely on FP16 or FP32 throughput, the H20 has the specification advantage. Its FP32 rating of 39.54 TFLOPS and FP16 rating of 79.07 TFLOPS exceed the GB10's 29.71 TFLOPS in both categories. The H20's memory bandwidth of 4.03 TB/s is an order of magnitude higher than the GB10's 273.2 GB/s, which is critical for bandwidth-bound operations. The H20's 9,984 shading units provide more parallel processing lanes.

The H20's higher power envelope, 500 W TDP with a 900 W suggested PSU, indicates it is designed for dense compute environments with adequate cooling and power delivery. The GB10's 140 W TDP with a 300 W suggested PSU fits a more constrained power budget, and its IGP slot width and compact dimensions (150 mm by 51 mm by 150 mm) enable installation in smaller chassis. The GB10's single HDMI output provides a display option that the H20 lacks entirely.

The release timeline positions these as successive generations. The H20 launched January 31, 2024, with the H20's successor being Server Blackwell, the generation the GB10 belongs to. The GB10 launched October 14, 2025, and lists Server Rubin as its successor. The GB10's launch MSRP is 3,999 USD, while the H20 has no recorded launch price.

The verdict depends on the workload profile. The GB10 delivers measured performance in the 95th percentile with a balanced set of graphics and compute features, a large 128 GB memory pool, and a low 140 W power draw. The H20 offers higher peak compute specifications and vastly superior memory bandwidth, but its complete lack of benchmark data means those specifications remain unverified in the database. Users requiring confirmed performance should rely on the GB10's recorded scores. Users prioritizing raw compute specifications and memory bandwidth, and who can accommodate a 500 W power draw, will find the H20's profile compelling despite the missing measurements.