AMD Radeon 820M vs NVIDIA RTX PRO 4500 Blackwell Server Comparison

The Verdict

The database records two graphics processors that occupy opposite ends of the computational spectrum. The AMD Radeon 820M is an integrated graphics processor (IGP) built for portable devices, drawing 15 W and sharing system memory. The NVIDIA RTX PRO 4500 Blackwell Server is a single-slot, 165 W discrete accelerator with 32 GB of dedicated GDDR7 memory and no display outputs. The recorded data shows zero shared benchmark entries, zero head-to-head wins for either part, and both sit at the 50th percentile versus all GPUs with an average benchmark score of zero. Because no measured performance data exists in the database, the verdict rests entirely on architectural and specification differences.

System builders with power-constrained, portable designs would select the AMD Radeon 820M. Its 15 W TDP, integrated form factor, and lack of power connectors make it suitable for thin-and-light notebooks where physical space and thermal capacity are minimal. Its PCIe 4.0 x8 interface and portable-device-dependent display outputs further align it with mobile platforms. The NVIDIA RTX PRO 4500 Blackwell Server, by contrast, is a rack-oriented accelerator. Its 267 mm length, 111 mm height, 40 mm width, single-slot profile, 1x 16-pin power connector, and 450 W suggested PSU indicate a server environment with dedicated power delivery and cooling. No display outputs mean it is not intended for direct monitor connection. The data indicates a workload split: the AMD part serves client-side integrated graphics, while the NVIDIA part targets compute and rendering tasks in server chassis.

FAQ

Q: Which GPU has more shading units?

A: The NVIDIA RTX PRO 4500 Blackwell Server has 10,496 shading units. The AMD Radeon 820M has 128.

Q: What memory configurations do these parts use?

A: The AMD Radeon 820M uses System Shared memory with system-dependent bandwidth. The NVIDIA RTX PRO 4500 Blackwell Server has 32 GB of GDDR7 on a 256-bit bus with 800.3 GB/s bandwidth.

Q: Which part supports ray tracing?

A: Both support ray tracing. The AMD Radeon 820M has 2 RT cores, and the NVIDIA RTX PRO 4500 Blackwell Server has 82 RT cores.

Q: What is the process node for each chip?

A: The AMD Radeon 820M uses a 4 nm TSMC process. The NVIDIA RTX PRO 4500 Blackwell Server uses a 5 nm TSMC process.

Q: Are these parts currently in production?

A: Yes, the database lists both as Active production status.

Q: What API support do they share?

A: Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Architecture Differences

The AMD Radeon 820M is built on the RDNA 3.5 architecture, fabricated on a 4 nm TSMC process. Its chip is designated Krackan Point 2, and it belongs to the Navi III IGP generation for Strix Point Mobile. The part is an integrated GPU with 128 shading units, 8 texture mapping units, 4 render output units, and 2 ray tracing cores. Its FP32 throughput is 716.8 GFLOPS, and its FP16 throughput matches at 716.8 GFLOPS with a 1:1 ratio. Pixel rate is 11.20 GPixel/s, and texture rate is 22.40 GTexel/s. The GPU relies on System Shared memory, so the bus width and bandwidth are system dependent rather than fixed properties of the chip. The 15 W TDP and IGP slot width confirm that this is a processor integrated into a mobile platform rather than a discrete card.

The NVIDIA RTX PRO 4500 Blackwell Server is built on the Blackwell 2.0 architecture, fabricated on a 5 nm TSMC process. Its chip is the GB203, with 45,600 million transistors on a 378 mm² die, yielding a transistor density of 120.6 million per mm². The part belongs to the Server Blackwell (Bxx) generation and is the successor to Server Hopper, with Server Rubin listed as its successor. It carries 10,496 shading units, 328 texture mapping units, 112 render output units, 82 ray tracing cores, and 328 tensor cores. FP32 performance is 50.70 TFLOPS, and FP16 is also 50.70 TFLOPS with a 1:1 ratio. Pixel rate is 270.5 GPixel/s, and texture rate is 792.1 GTexel/s. Memory is 32 GB of GDDR7 on a 256-bit bus with 800.3 GB/s bandwidth. The 165 W TDP, single-slot design, and 1x 16-pin power connector mark it as a discrete server accelerator. The transistor count for the AMD chip is listed as unknown, and its die size is unknown, so direct density comparisons are not possible from the recorded data.

Both architectures share the same API feature set: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The AMD part uses RDNA 3.5, a graphics-first architecture, while the NVIDIA part uses Blackwell 2.0 with a separate tensor core array (328 tensor cores) that the AMD IGP lacks entirely. The NVIDIA part also differs in having no display outputs, reinforcing its role as a compute-oriented server component.

Specification Differences

The two parts differ across nearly every measurable specification field. The AMD Radeon 820M clocks at a base of 400 MHz and a boost of 2800 MHz, with system-shared memory. The NVIDIA RTX PRO 4500 Blackwell Server clocks at a base of 1215 MHz and a boost of 2415 MHz, with memory clocked at 1563 MHz and 25 Gbps effective. The AMD part has no dedicated memory size, type, bus width, or bandwidth values; all are listed as System Shared or System Dependent. The NVIDIA part has 32 GB GDDR7, a 256-bit bus, and 800.3 GB/s bandwidth.

Shading units differ by a factor of roughly 82: 128 on the AMD part versus 10,496 on the NVIDIA part. Texture mapping units are 8 versus 328, and render output units are 4 versus 112. Ray tracing cores are 2 versus 82. Tensor cores exist only on the NVIDIA part at 328. FP32 output is 716.8 GFLOPS versus 50.70 TFLOPS, a difference of roughly 70 times. FP16 follows the same ratio at 716.8 GFLOPS versus 50.70 TFLOPS. Pixel rate is 11.20 GPixel/s versus 270.5 GPixel/s. Texture rate is 22.40 GTexel/s versus 792.1 GTexel/s.

Power and physical specifications differ sharply. The AMD part has a 15 W TDP, IGP slot width, no power connectors, and no suggested PSU. The NVIDIA part has a 165 W TDP, single-slot width, a 1x 16-pin power connector, and a 450 W suggested PSU. The AMD part uses PCIe 4.0 x8, while the NVIDIA part uses PCIe 5.0 x16. Display outputs are Portable Device Dependent on the AMD part and absent on the NVIDIA part. Dimensions are null for the AMD IGP, while the NVIDIA card measures 267 mm by 111 mm by 40 mm (10.5 by 4.4 by 1.6 inches). Release dates differ as well: the AMD part is dated 2025-02-28, and the NVIDIA part is dated 2026-03-16. The AMD part lists Navi II IGP as its predecessor, and the NVIDIA part lists Server Hopper as its predecessor and Server Rubin as its successor.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries between the AMD Radeon 820M and the NVIDIA RTX PRO 4500 Blackwell Server. The winsA and winsB fields are both zero, and the headToHeadBenchmarks array is empty. Neither part has individual benchmark scores recorded, and both carry an average benchmark score of zero. The percentileVsAllGpus field is 50 for both, which places them at the median of all GPUs in the database, but with no underlying benchmark data, this percentile cannot be interpreted as a performance measure.

Without measured scores, the comparison must rely on the specification deltas. The NVIDIA part delivers 50.70 TFLOPS of FP32 performance versus 716.8 GFLOPS on the AMD part. That is a 70.7 times advantage in raw floating-point throughput. Texture rate favors the NVIDIA part at 792.1 GTexel/s versus 22.40 GTexel/s, a 35.4 times advantage. Pixel rate favors the NVIDIA part at 270.5 GPixel/s versus 11.20 GPixel/s, a 24.2 times advantage. Memory bandwidth is 800.3 GB/s on the NVIDIA part, while the AMD part is system dependent and cannot be quantified from the recorded data. The NVIDIA part also carries 82 RT cores and 328 tensor cores, while the AMD part has 2 RT cores and no tensor cores. These deltas indicate that any compute workload heavy enough to engage the full NVIDIA pipeline would run orders of magnitude faster on the discrete server part, but the absence of benchmark scores means no empirical confirmation exists in the database.

Where Each One Wins

The AMD Radeon 820M wins in integration and power efficiency. Its 15 W TDP is 150 W lower than the NVIDIA part's 165 W TDP. It requires no power connectors and no suggested PSU, making it compatible with existing mobile power delivery. Its IGP slot width and PCIe 4.0 x8 interface fit within laptop motherboards. Display outputs are portable-device dependent, meaning the GPU is designed to drive integrated panels or portable display connections. The 4 nm process node is smaller than the NVIDIA part's 5 nm node, which contributed to its lower power envelope. For any system where physical space, thermal limits, and power draw dominate the design constraints, the AMD part is the only viable choice between the two.

The NVIDIA RTX PRO 4500 Blackwell Server wins in every raw compute metric recorded. Its 10,496 shading units, 328 TMUs, 112 ROPs, 82 RT cores, and 328 tensor cores provide the hardware resources for large parallel workloads. Its 32 GB GDDR7 memory with 800.3 GB/s bandwidth supplies data to those cores at a rate the AMD part cannot match, since the AMD part relies on system memory with system-dependent bandwidth. The 50.70 TFLOPS FP32 and FP16 figures make it suitable for compute tasks that saturate a full GPU pipeline. The absence of display outputs indicates the intended role is headless acceleration in a server. The PCIe 5.0 x16 interface provides twice the lane width and a newer generation than the AMD part's PCIe 4.0 x8. The 450 W suggested PSU, single-slot cooler, and 267 mm length are consistent with rack-mounted server deployment where power and cooling are provisioned at the chassis level.

The data splits cleanly: the AMD part is the integrated solution for portable devices, and the NVIDIA part is the discrete accelerator for server nodes. No benchmark measurements exist to bridge that gap, so the selection between them is determined by platform type and workload requirements rather than comparative performance data.