NVIDIA A100 SXM4 80 GB vs NVIDIA RTX A4500 Mobile Comparison

Head-to-Head Benchmarks

The database contains one directly comparable benchmark between these two accelerators, and the result is decisive. In the Geekbench Vulkan test, the NVIDIA A100 SXM4 80 GB records a score of 183,725, while the NVIDIA RTX A4500 Mobile reaches 76,960. The A100 SXM4 80 GB leads by 138.7%, more than double the mobile workstation GPU's output. This is the only head-to-head measurement available, and it sets the tone for the entire comparison: the server-class accelerator is in a different performance tier altogether.

Looking at the A100 SXM4 80 GB's position in the broader database, its average benchmark score of 183,725 places it in the 98th percentile of all GPUs tracked. Its nearest rivals in the database are the NVIDIA RTX 5000 Ada Generation at 184,664 (a 0.5% gap in favor of the rival), the NVIDIA RTX PRO 5000 Blackwell at 182,109 (0.9% ahead of that card), the NVIDIA A100 SXM4 40 GB at 187,147 (1.8% behind the 40 GB variant), and the NVIDIA GeForce RTX 4090 D at 178,050 (3.2% ahead of that consumer card). These deltas are all small, indicating the A100 SXM4 80 GB sits in a tightly contested cluster at the very top of the performance spectrum.

The RTX A4500 Mobile, by contrast, holds an average benchmark score of 91,134 across its two recorded tests (Geekbench OpenCL at 105,307 and Geekbench Vulkan at 76,960), which places it in the 93rd percentile of all GPUs. Its nearest rivals include the desktop NVIDIA RTX A4500 at 91,671 (0.6% ahead), the AMD Radeon Instinct MI60 at 92,466 (1.4% ahead), the NVIDIA Quadro GP100 at 87,445 (4.2% behind the mobile card), and the AMD Radeon PRO W7600 at 87,108 (4.6% behind). The mobile GPU is competitive with its immediate peers, but the gap to the A100 SXM4 80 GB is enormous: the server part leads by roughly 101.6% in average benchmark score when comparing the two products directly.

The Vulkan-specific head-to-head delta of 138.7% is the single most informative number in this comparison. It shows that in a cross-platform graphics API workload, the A100 SXM4 80 GB does not merely edge out the RTX A4500 Mobile; it nearly doubles the mobile part's throughput. This is not a marginal generational improvement or a clock-speed advantage; it is a fundamental difference in compute capability.

Where Each One Wins

From the recorded data, the NVIDIA A100 SXM4 80 GB wins the only shared benchmark category outright. In Geekbench Vulkan, it scores 183,725 against 76,960 for the RTX A4500 Mobile. That is a clean sweep in the only head-to-head test available, and it aligns with the A100's positioning as a server accelerator designed for maximum throughput. The A100 SXM4 80 GB also demonstrates consistency: its Vulkan score is identical to its average benchmark score (183,725), meaning the single recorded test is representative of its overall performance profile. The RTX A4500 Mobile, however, shows a split personality across its two recorded tests. Its OpenCL score of 105,307 is substantially higher than its Vulkan score of 76,960, suggesting the mobile part is more optimized for compute-oriented APIs than for graphics-oriented ones, at least within the limits of the database measurements.

For the RTX A4500 Mobile, the wins are not in raw performance but in relative positioning within its own peer group. Its average score of 91,134 puts it ahead of the NVIDIA Quadro GP100 by 4.2% and ahead of the AMD Radeon PRO W7600 by 4.6%. It trails the desktop RTX A4500 by only 0.6% and the AMD Radeon Instinct MI60 by 1.4%. For a mobile part, staying within a few percent of desktop-class rivals is a meaningful achievement, though the database does not contain any workload where the mobile GPU beats the A100 SXM4 80 GB.

The use-case split is therefore straightforward. The A100 SXM4 80 GB is the clear choice for any workload that demands maximum Vulkan throughput or general compute performance at the top of the database's percentile rankings. The RTX A4500 Mobile is the choice for scenarios where the A100's form factor, power envelope, or lack of display outputs makes it unsuitable, and where the workload is within the mobile part's capability range. The data does not support any scenario where the RTX A4500 Mobile outperforms the A100 SXM4 80 GB.

The Verdict

The benchmark data is unambiguous: the NVIDIA A100 SXM4 80 GB is the overwhelmingly faster part in the one shared test. Its Vulkan score of 183,725 is 138.7% higher than the RTX A4500 Mobile's 76,960, and its average benchmark score of 183,725 places it in the 98th percentile of all GPUs, versus the 93rd percentile for the mobile part. The A100 SXM4 80 GB also sits in a tighter, higher-performing cluster of rivals: it is within 3.2% of the GeForce RTX 4090 D and within 1.8% of the A100 SXM4 40 GB, while the RTX A4500 Mobile's nearest rivals span a 5.2% range from the AMD Radeon PRO W7600 below it to the AMD Radeon Instinct MI60 above it.

Who should pick the A100 SXM4 80 GB? Anyone whose workload is dominated by Vulkan-based rendering or compute, and who can accommodate a 400 W server module with no display outputs. The data shows it is a top-tier performer, and its end-of-life production status does not diminish its recorded capabilities. Who should pick the RTX A4500 Mobile? Anyone who needs a portable, 140 W solution with display outputs (portable device dependent) and who can accept roughly half the average benchmark performance. The mobile part is still competitive within its own class, trailing the desktop RTX A4500 by only 0.6% and leading the Quadro GP100 by 4.2%. But the verdict from the data is clear: for raw performance, the A100 SXM4 80 GB wins decisively, and the RTX A4500 Mobile wins only in portability and integration flexibility, neither of which is measured in the benchmark scores.

FAQ

Q: Which GPU has the higher Geekbench Vulkan score?

A: The NVIDIA A100 SXM4 80 GB scores 183,725, which is 138.7% higher than the RTX A4500 Mobile's 76,960.

Q: How do the two GPUs compare in average benchmark score?

A: The A100 SXM4 80 GB has an average benchmark score of 183,725 (98th percentile), while the RTX A4500 Mobile averages 91,134 across its two tests (93rd percentile).

Q: What are the nearest rivals for each GPU in the database?

A: For the A100 SXM4 80 GB, the nearest rivals are the RTX 5000 Ada Generation (delta -0.5%), RTX PRO 5000 Blackwell (0.9%), A100 SXM4 40 GB (-1.8%), and GeForce RTX 4090 D (3.2%). For the RTX A4500 Mobile, they are the desktop RTX A4500 (-0.6%), AMD Radeon Instinct MI60 (-1.4%), Quadro GP100 (4.2%), and AMD Radeon PRO W7600 (4.6%).

Q: Does the RTX A4500 Mobile have any benchmark where it wins?

A: No. In the single head-to-head benchmark (Geekbench Vulkan), the A100 SXM4 80 GB wins. The RTX A4500 Mobile has no recorded wins in the head-to-head comparison.

Q: What is the production status of each GPU?

A: Both are end-of-life. The A100 SXM4 80 GB was released in November 2020, and the RTX A4500 Mobile was released in March 2022.

Q: Which GPU has display outputs?

A: The RTX A4500 Mobile has display outputs described as "Portable Device Dependent," while the A100 SXM4 80 GB has no outputs at all.

Architecture Differences

The two GPUs share the Ampere architecture but are built on different chips and processes. The A100 SXM4 80 GB uses the GA100 chip fabricated on a 7 nm process at TSMC, while the RTX A4500 Mobile uses the GA104 chip fabricated on an 8 nm process at Samsung. The A100's die is 826 mm² with 54,200 million transistors, yielding a transistor density of 65.6 million per mm². The RTX A4500 Mobile's die is 392 mm² with 17,400 million transistors, for a density of 44.4 million per mm². The A100 is a massive server-class die, while the GA104 is a mid-range mobile chip.

In terms of compute resources, the A100 SXM4 80 GB has 6,912 shading units, 432 texture mapping units, 160 raster output units, and 432 tensor cores. The RTX A4500 Mobile has 5,888 shading units, 184 TMUs, 96 ROPs, 46 ray tracing cores, and 184 tensor cores. The A100 has no dedicated ray tracing cores, while the RTX A4500 Mobile includes 46 of them, reflecting its intended use in graphics workloads. The A100's FP32 throughput is 19.49 TFLOPS, while its FP16 throughput is 77.97 TFLOPS with a 4:1 ratio, indicating heavy tensor-core acceleration for mixed-precision work. The RTX A4500 Mobile delivers 17.66 TFLOPS for both FP32 and FP16 with a 1:1 ratio, showing no such acceleration advantage.

The memory subsystems differ fundamentally. The A100 uses 80 GB of HBM2e on a 5120-bit bus, delivering 2.04 TB/s of bandwidth. The RTX A4500 Mobile uses 16 GB of GDDR6 on a 256-bit bus, delivering 512.0 GB/s. The A100's memory bandwidth is exactly four times that of the mobile part. Pixel rate for the A100 is 225.6 GPixel/s versus 144.0 GPixel/s for the RTX A4500 Mobile. Texture rate is 609.1 GTexel/s versus 276.0 GTexel/s. Both use a PCIe 4.0 x16 bus interface.

Specification Differences

The two parts differ across nearly every measurable specification. Process node: 7 nm for the A100 versus 8 nm for the RTX A4500 Mobile. Foundry: TSMC versus Samsung. Transistor count: 54,200 million versus 17,400 million. Die size: 826 mm² versus 392 mm². Transistor density: 65.6M per mm² versus 44.4M per mm².

Clock speeds: the A100 has a base clock of 1275 MHz and a boost clock of 1410 MHz, while the RTX A4500 Mobile has a base of 930 MHz and a boost of 1500 MHz. The mobile part boosts higher, but the A100's superior architecture and resources compensate. Memory clocks: 1593 MHz (3.2 Gbps effective) for the A100 versus 2000 MHz (16 Gbps effective) for the RTX A4500 Mobile.

Memory: 80 GB HBM2e with a 5120-bit bus and 2.04 TB/s bandwidth versus 16 GB GDDR6 with a 256-bit bus and 512.0 GB/s bandwidth. Shading units: 6,912 versus 5,888. TMUs: 432 versus 184. ROPs: 160 versus 96. Tensor cores: 432 versus 184. The RTX A4500 Mobile has 46 ray tracing cores; the A100 has none. FP32: 19.49 TFLOPS versus 17.66 TFLOPS. FP16: 77.97 TFLOPS (4:1) versus 17.66 TFLOPS (1:1). Pixel rate: 225.6 GPixel/s versus 144.0 GPixel/s. Texture rate: 609.1 GTexel/s versus 276.0 GTexel/s. TDP: 400 W versus 140 W. Slot width: OAM Module for the A100, null for the RTX A4500 Mobile. Power connectors: none for both, but the A100 has a suggested PSU of 800 W while the mobile part has none. Display outputs: none for the A100, portable device dependent for the RTX A4500 Mobile. API support: the RTX A4500 Mobile lists DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4; the A100's API fields are all null. Release dates: November 2020 for the A100, March 2022 for the RTX A4500 Mobile. Predecessors: Tesla Turing for the A100, Quadro Turing-M for the RTX A4500 Mobile. Successors: Server Ada for the A100, Ada-MW for the RTX A4500 Mobile.