AMD Radeon 820M vs NVIDIA RTX PRO 4000 Blackwell Comparison
AMD Radeon 820M
RTX PRO 4000 Blackwell
PERFORMANCE BENCHMARKS
Analysis: AMD Radeon 820M vs NVIDIA RTX PRO 4000 Blackwell
Head-to-Head Benchmarks
The database contains no overlapping benchmark scores for the AMD Radeon 820M and the NVIDIA RTX PRO 4000 Blackwell, which makes a direct per-test comparison impossible. The Radeon 820M has no recorded benchmark entries in the database, while the RTX PRO 4000 Blackwell has nine recorded scores across 3DMark, Geekbench, and Passmark suites. The RTX PRO 4000 Blackwell posts a Passmark G3D score of 28,427 and a Passmark GPU Compute score of 14,805. Its 3DMark Steel Nomad DX12 result sits at 4,648, and its Geekbench Vulkan score reaches 194,168. The Radeon 820M, by contrast, carries an average benchmark score of 0 with no individual test data recorded.
The RTX PRO 4000 Blackwell achieves an average benchmark score of 27,135, placing it at the 72nd percentile of all GPUs in the database. Its nearest rivals show a tight cluster: the AMD Radeon RX 6700 XT averages 27,425 (1.1% higher), the NVIDIA GeForce RTX 4070 Mobile averages 27,435 (1.1% higher), and the NVIDIA GeForce RTX 3090 averages 27,565 (1.6% higher). The NVIDIA RTX A4000 trails at 26,683, which is 1.7% lower than the RTX PRO 4000 Blackwell. This places the RTX PRO 4000 Blackwell in a performance band essentially equivalent to the RTX 3090 and RX 6700 XT, despite being a workstation-oriented card.
The Radeon 820M, with no recorded benchmarks and a 50th percentile ranking, cannot be positioned against those scores through measured data. The percentile field suggests a midpoint ranking across all GPUs, but the absence of any actual benchmark entries means the 50th percentile reflects a default or unmeasured placement rather than a tested result. The RTX PRO 4000 Blackwell, in contrast, has concrete measurements across multiple APIs including DirectX 9, 10, 11, 12, Vulkan, and compute workloads. Its Passmark DirectX 11 score of 276 and DirectX 12 score of 97 show API-level variation, while its Passmark G2D score of 1,265 indicates 2D performance. The Radeon 820M offers no comparable figures in the database.
FAQ
Q: Which GPU has a higher average benchmark score in the database?
A: The NVIDIA RTX PRO 4000 Blackwell has an average benchmark score of 27,135, while the AMD Radeon 820M has an average benchmark score of 0 with no recorded benchmark entries.
Q: How does the RTX PRO 4000 Blackwell compare to its nearest rivals?
A: The RTX PRO 4000 Blackwell sits 1.1% below the AMD Radeon RX 6700 XT and the NVIDIA GeForce RTX 4070 Mobile, 1.6% below the NVIDIA GeForce RTX 3090, and 1.7% above the NVIDIA RTX A4000.
Q: What is the memory configuration of each GPU?
A: The RTX PRO 4000 Blackwell uses 24 GB of GDDR7 memory on a 192-bit bus with 672.0 GB/s bandwidth. The Radeon 820M uses system-shared memory with system-dependent bandwidth and a system shared bus width.
Q: What are the power requirements for each card?
A: The RTX PRO 4000 Blackwell has a TDP of 140 W, uses a single 16-pin power connector, and has a suggested PSU of 300 W. The Radeon 820M has a TDP of 15 W and requires no power connectors.
Q: Which GPU has more shading units and ray tracing cores?
A: The RTX PRO 4000 Blackwell has 8,960 shading units and 70 ray tracing cores. The Radeon 820M has 128 shading units and 2 ray tracing cores.
Q: What is the production status and release timing for each?
A: Both GPUs are listed as Active in production. The Radeon 820M was released on 2025-02-28, and the RTX PRO 4000 Blackwell was released on 2025-03-17.
Where Each One Wins
The RTX PRO 4000 Blackwell wins decisively in every measurable performance category, based on the database records. Its FP32 compute of 36.83 TFLOPS dwarfs the Radeon 820M's 716.8 GFLOPS, a 51.4x advantage in raw floating-point throughput. Texture rate follows the same pattern: the RTX PRO 4000 Blackwell delivers 575.4 GTexel/s versus 22.40 GTexel/s for the Radeon 820M. Pixel rate shows 197.3 GPixel/s for the NVIDIA card versus 11.20 GPixel/s for the AMD part. The RTX PRO 4000 Blackwell also carries 280 tensor cores and 280 texture mapping units, while the Radeon 820M has no tensor cores and only 8 TMUs. For ray tracing workloads, the NVIDIA card's 70 RT cores provide a substantial structural advantage over the AMD part's 2 RT cores.
The Radeon 820M wins on power efficiency and physical footprint. Its 15 W TDP is drastically lower than the RTX PRO 4000 Blackwell's 140 W, and it requires no power connectors versus the NVIDIA card's single 16-pin connector. The Radeon 820M is an integrated graphics processor (IGP) with zero slot width, while the RTX PRO 4000 Blackwell occupies a single slot and measures 241 mm in length, 111 mm in height, and 20 mm in width. The Radeon 820M also has a higher boost clock at 2800 MHz versus 2055 MHz for the NVIDIA card, though its base clock of 400 MHz is far below the NVIDIA card's 1230 MHz. The Radeon 820M uses a PCIe 4.0 x8 interface, while the RTX PRO 4000 Blackwell uses PCIe 5.0 x16.
For use-case segmentation, the RTX PRO 4000 Blackwell targets workstation-class workloads requiring high compute throughput, large memory capacity, and professional display outputs. Its 4x DisplayPort 2.1b outputs and 24 GB GDDR7 memory suit multi-display and memory-intensive tasks. The Radeon 820M targets portable devices where its system-shared memory and 15 W power envelope integrate into a laptop or compact platform, with display outputs listed as portable device dependent.
Specification Differences
The two GPUs differ across nearly every specification field in the database. The Radeon 820M uses a 4 nm process node, while the RTX PRO 4000 Blackwell uses 5 nm, both fabricated by TSMC. The NVIDIA chip, GB203, contains 45,600 million transistors on a 378 mm² die with a transistor density of 120.6M per mm². The AMD chip, Krackan Point 2, has unknown transistor count and die size. Clock speeds diverge sharply: the Radeon 820M boosts to 2800 MHz from a 400 MHz base, while the RTX PRO 4000 Blackwell boosts to 2055 MHz from a 1230 MHz base. The NVIDIA card's memory clock is listed as 1750 MHz with 28 Gbps effective, while the AMD part uses system-shared memory with no dedicated memory clock.
Memory capacity, type, bus width, and bandwidth are completely different: 24 GB GDDR7 on a 192-bit bus with 672.0 GB/s versus system-shared memory with no fixed size, type, or bus width and system-dependent bandwidth. Compute resources show 8,960 shading units, 280 TMUs, 96 ROPs, 70 RT cores, and 280 tensor cores for the NVIDIA card, versus 128 shading units, 8 TMUs, 4 ROPs, 2 RT cores, and no tensor cores for the AMD part. Pixel rate, texture rate, and FP32/FP16 throughput all favor the RTX PRO 4000 Blackwell by orders of magnitude, as detailed in the prior section.
Physical and power characteristics differ as well: the RTX PRO 4000 Blackwell is a single-slot card with a 16-pin connector, 140 W TDP, and a 300 W suggested PSU, while the Radeon 820M is an IGP with no power connectors and a 15 W TDP. The NVIDIA card uses PCIe 5.0 x16, the AMD part uses PCIe 4.0 x8. Display outputs are 4x DisplayPort 2.1b for NVIDIA versus portable device dependent for AMD. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RTX PRO 4000 Blackwell measures 241 mm by 111 mm by 20 mm; the Radeon 820M has no listed dimensions.
Architecture Differences
The architectural divide is fundamental. The Radeon 820M is built on RDNA 3.5, part of the Navi III IGP generation for Strix Point Mobile platforms, with a 4 nm process. The RTX PRO 4000 Blackwell uses Blackwell 2.0 architecture from the Blackwell PRO W (x000) generation, fabricated on a 5 nm process. The AMD chip, Krackan Point 2, represents an integrated graphics solution with 2 ray tracing cores and no tensor cores, reflecting its focus on general graphics within a mobile APU. The NVIDIA GB203 chip is a discrete workstation GPU with 70 RT cores and 280 tensor cores, enabling dedicated hardware acceleration for ray tracing and AI workloads.
The Radeon 820M's memory architecture relies entirely on system-shared memory, meaning bandwidth and capacity depend on the host platform's memory configuration. The RTX PRO 4000 Blackwell uses dedicated GDDR7 memory with a fixed 192-bit bus and 672.0 GB/s of bandwidth, providing predictable and high-throughput memory access. The NVIDIA card's 45,600 million transistors on a 378 mm² die give it a transistor density of 120.6M per mm², whereas the AMD part's transistor count and die size are unknown in the database.
The FP16 to FP32 ratio is 1:1 on both cards, indicating similar mixed-precision handling for each architecture, but the absolute magnitudes differ enormously: 36.83 TFLOPS for NVIDIA versus 716.8 GFLOPS for AMD. The Radeon 820M's predecessor is listed as Navi II IGP, while the RTX PRO 4000 Blackwell's predecessor is Workstation Ada, showing lineage from previous integrated and workstation generations respectively. The RTX PRO 4000 Blackwell supports PCIe 5.0 x16, doubling the interface bandwidth of the Radeon 820M's PCIe 4.0 x8 connection, which matters for data transfer between the GPU and host system. The Radeon 820M's 2800 MHz boost clock exceeds the NVIDIA card's 2055 MHz boost, but the lower shader count and memory bandwidth limit its practical throughput compared to the RTX PRO 4000 Blackwell's massive compute resource pool.