AMD Radeon 820M vs NVIDIA RTX 4500 Ada Generation Comparison

Head-to-Head Benchmarks

The recorded data positions these two GPUs at opposite extremes of the performance spectrum. The AMD Radeon 820M carries no benchmark scores in the database, while the NVIDIA RTX 4500 Ada Generation holds an average benchmark score of 166094 across its two recorded tests. This absence of comparative data for the AMD part means the head-to-head comparison relies entirely on the NVIDIA card's measured performance and its position relative to other workstation-class accelerators.

The RTX 4500 Ada Generation achieves a Geekbench OpenCL score of 160786 and a Geekbench Vulkan score of 171401. The Vulkan result exceeds the OpenCL result by approximately 6.6%, indicating that the architecture scales well across different compute APIs. The average of these two tests, 166094, places the card in the 97th percentile of all GPUs tracked in the database. That percentile ranking is a strong signal: only about 3% of recorded GPUs score higher, and the card sits comfortably among professional workstation accelerators rather than consumer gaming parts.

Examining the nearest rivals clarifies the competitive landscape. The NVIDIA RTX A5500 posts an average score of 165217, which is 0.5% lower than the RTX 4500 Ada Generation's 166094. The AMD Radeon PRO W7800 scores 164894, trailing by 0.7%. The AMD Radeon Pro W6900X scores 168574, which is 1.5% higher than the RTX 4500, making it the only rival in this group that beats the card. The NVIDIA A100 PCIe 40 GB scores 162504, which is 2.2% lower than the RTX 4500. These deltas are tight, all within a 3.7% band, suggesting that the RTX 4500 Ada Generation sits in a densely packed performance tier where small architectural differences determine placement.

The AMD Radeon 820M's lack of recorded benchmark scores means the database cannot confirm any performance wins for it. Its percentile ranking of 50 places it at the median of all tracked GPUs, but no measured workload data exists to substantiate that position. The wins tally shows 0 for the AMD part and 0 for the NVIDIA part in direct head-to-head tests, simply because no such tests are recorded. What the data does show is a card designed for integrated graphics in mobile processors versus a dedicated workstation GPU with substantial compute resources. The RTX 4500 Ada Generation's raw numbers, 39.63 TFLOPS of FP32 throughput and 432.0 GB/s of memory bandwidth, dwarf anything the Radeon 820M can theoretically offer, though the AMD part's exact capabilities remain unmeasured in this database.

Architecture Differences

The two GPUs come from different manufacturers and use fundamentally different architectures. The AMD Radeon 820M uses RDNA 3.5, built on a 4 nm process at TSMC, and belongs to the Navi III IGP generation for Strix Point Mobile. The NVIDIA RTX 4500 Ada Generation uses Ada Lovelace, built on a 5 nm process also at TSMC, and belongs to the Workstation Ada generation. Both use TSMC as the foundry, but the process nodes differ, with AMD using a smaller 4 nm node versus NVIDIA's 5 nm node.

The chip designs reflect their intended roles. The AMD part uses the Krackan Point 2 chip, while the NVIDIA part uses the AD103 chip. The AD103 contains 45,900 million transistors on a 379 mm² die, yielding a transistor density of 121.1M per mm². The AMD chip's transistor count and die size are listed as unknown, so no direct density comparison is possible from the recorded data. What the data does show is a massive difference in scale: the NVIDIA chip packs 7,680 shading units, 240 TMUs, 80 ROPs, 60 RT cores, and 240 tensor cores. The AMD part has 128 shading units, 8 TMUs, 4 ROPs, and 2 RT cores, with no tensor cores listed. That is a 60-fold difference in shading units and a 30-fold difference in RT cores.

The Radeon 820M's clock behavior differs markedly. Its base clock is 400 MHz with a boost of 2800 MHz, a 7x uplift from base to boost. The RTX 4500 Ada Generation runs a base clock of 2070 MHz with a boost of 2580 MHz, a much narrower 25% boost range. The AMD part relies heavily on boosting to reach its rated throughput, which is typical for power-constrained integrated graphics. The NVIDIA card's higher base clock reflects a design that can sustain heavy loads without relying on aggressive boost behavior.

Memory architecture highlights another fundamental split. The Radeon 820M uses system shared memory, with the memory size, type, bus width, and bandwidth all listed as system dependent. The RTX 4500 Ada Generation has 24 GB of dedicated GDDR6 memory on a 192-bit bus, delivering 432.0 GB/s of bandwidth. The memory clock runs at 2250 MHz with 18 Gbps effective data rate. This distinction matters for workloads that repeatedly access the same data: dedicated VRAM avoids the latency and bandwidth contention of shared system memory.

Both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API-level feature parity exists. The NVIDIA card adds tensor cores, which the AMD part lacks entirely, and those tensor cores matter for AI-accelerated workloads. The AMD part's FP16 performance is listed as 716.8 GFLOPS (1:1 ratio with FP32), while the NVIDIA card delivers 39.63 TFLOPS for both FP16 and FP32, also at a 1:1 ratio. The NVIDIA card's FP16 capability is listed as 1:1, which is a notable architectural choice. The Radeon 820M's 1:1 FP16 ratio is also notable, since many GPUs halve FP16 throughput.

Where Each One Wins

The data supports a clear split based on workload requirements. The RTX 4500 Ada Generation wins on every measurable compute metric. Its 39.63 TFLOPS FP32 throughput, 619.2 GTexel/s texture rate, and 206.4 GPixel/s pixel rate are orders of magnitude beyond the Radeon 820M's 716.8 GFLOPS, 22.40 GTexel/s, and 11.20 GPixel/s. For rendering, simulation, machine learning inference, or any GPU-accelerated compute task, the NVIDIA card is the only viable option between the two based on measured data.

The Radeon 820M's advantages are not performance-based but system-level. Its 15 W TDP versus the NVIDIA card's 210 W TDP means it requires no power connectors and no suggested PSU rating. The RTX 4500 Ada Generation lists a suggested PSU of 550 W, which implies a full desktop power supply. The AMD part runs as an IGP with no slot width, while the NVIDIA card occupies a dual-slot form factor measuring 245 mm in length and 112 mm in height. For a compact, low-power mobile system, the Radeon 820M fits where a workstation card cannot physically or thermally exist.

The memory situation reinforces this split. The Radeon 820M's system shared memory means it uses whatever RAM the host system provides, with bandwidth dependent on the system configuration. The RTX 4500 Ada Generation's 24 GB GDDR6 buffer provides 432.0 GB/s of dedicated bandwidth. Workloads that fit within 24 GB of VRAM will benefit from consistent, dedicated bandwidth. Workloads that exceed that capacity would spill to system memory, but the GPU's large buffer makes that less likely for most professional applications.

The percentile data tells a story of intended positioning. The Radeon 820M sits at the 50th percentile of all GPUs, dead center in the database's distribution. The RTX 4500 Ada Generation sits at the 97th percentile. The AMD part is a baseline integrated solution for everyday graphics and light compute. The NVIDIA card is a high-end workstation accelerator that outperforms 97% of recorded GPUs. Neither card is trying to win the other's segment.

Specification Differences

The two cards differ across nearly every recorded specification. The Radeon 820M uses a 4 nm process node; the RTX 4500 Ada Generation uses 5 nm. The AMD part's transistor count and die size are unknown, while the NVIDIA chip has 45,900 million transistors on a 379 mm² die. The Radeon 820M has 128 shading units, 8 TMUs, 4 ROPs, and 2 RT cores. The RTX 4500 has 7,680 shading units, 240 TMUs, 80 ROPs, and 60 RT cores. The NVIDIA card also has 240 tensor cores; the AMD part lists none.

Clock speeds differ substantially. The Radeon 820M runs a 400 MHz base and 2800 MHz boost. The RTX 4500 runs a 2070 MHz base and 2580 MHz boost. Memory configuration is entirely different: the AMD part uses system shared memory with system-dependent bandwidth, while the NVIDIA card has 24 GB GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth and a 2250 MHz memory clock at 18 Gbps effective.

Power and physical specifications diverge sharply. The Radeon 820M has a 15 W TDP, no power connectors, an IGP slot width, and a PCIe 4.0 x8 interface. The RTX 4500 has a 210 W TDP, no power connectors listed, a dual-slot form factor, and a PCIe 4.0 x16 interface. The NVIDIA card lists a suggested PSU of 550 W and measures 245 mm by 112 mm. The AMD part's dimensions are not listed. Display outputs differ: the AMD part is portable-device dependent, while the NVIDIA card provides 4x DisplayPort 1.4a.

Compute throughput numbers show the scale of the gap. The Radeon 820M delivers 11.20 GPixel/s, 22.40 GTexel/s, and 716.8 GFLOPS FP32. The RTX 4500 delivers 206.4 GPixel/s, 619.2 GTexel/s, and 39.63 TFLOPS FP32. Both list FP16 at 1:1 ratios with their FP32 figures. Release dates differ by roughly 18 months: the Radeon 820M launched on 2025-02-28, while the RTX 4500 Ada Generation launched on 2023-08-08. The AMD part's predecessor is Navi II IGP; the NVIDIA card's predecessor is Workstation Ampere, and its successor is Blackwell PRO W.

FAQ

Q: How much faster is the RTX 4500 Ada Generation than the Radeon 820M in FP32 compute?

A: The RTX 4500 Ada Generation delivers 39.63 TFLOPS of FP32 throughput, while the Radeon 820M delivers 716.8 GFLOPS. That is roughly 55 times higher on the NVIDIA card.

Q: Does the Radeon 820M have ray tracing support?

A: Yes, it includes 2 RT cores and supports DirectX 12 Ultimate (12_2), which includes ray tracing features. The RTX 4500 Ada Generation has 60 RT cores for comparison.

Q: What memory does the Radeon 820M use?

A: It uses system shared memory, with the memory size, type, bus width, and bandwidth all dependent on the host system. The RTX 4500 Ada Generation has 24 GB of dedicated GDDR6 memory with 432.0 GB/s bandwidth.

Q: How does the RTX 4500 Ada Generation compare to the NVIDIA RTX A5500?

A: The RTX 4500 Ada Generation scores 166094 on average, which is 0.5% higher than the RTX A5500's 165217 average score.

Q: What is the power requirement difference between these two cards?

A: The Radeon 820M has a 15 W TDP and no power connectors. The RTX 4500 Ada Generation has a 210 W TDP, no power connectors, and a suggested PSU of 550 W.

Q: Which card has a higher release date?

A: The Radeon 820M released on 2025-02-28, while the RTX 4500 Ada Generation released on 2023-08-08. The AMD part is newer by about 18 months.

The Verdict

The data supports a straightforward selection based on workload and system constraints. The RTX 4500 Ada Generation is the clear choice for any compute-intensive professional application. Its 97th percentile ranking, 39.63 TFLOPS FP32 throughput, 24 GB GDDR6 memory, and 432.0 GB/s bandwidth place it in a performance tier that the Radeon 820M cannot approach. The 60 RT cores and 240 tensor cores add hardware acceleration for ray tracing and AI workloads that the AMD part lacks entirely. For rendering, simulation, machine learning, or heavy GPU compute, the RTX 4500 Ada Generation is the only option between the two that the recorded data supports.

The Radeon 820M serves a different purpose. Its 15 W TDP, IGP form factor, and system shared memory make it suitable for mobile or compact systems where a dual-slot, 210 W workstation card cannot be installed. Its 50th percentile ranking places it at the median of all GPUs, adequate for general graphics and light compute but not for sustained professional workloads. The PCIe 4.0 x8 interface and portable-device-dependent display outputs reinforce its role as a mobile integrated solution.

The release timeline adds context. The Radeon 820M is the newer product, launched on 2025-02-28, while the RTX 4500 Ada Generation launched on 2023-08-08. Yet the older NVIDIA card remains dramatically more powerful. This reflects the different market segments: integrated graphics in mobile processors versus dedicated workstation accelerators. The RTX 4500 Ada Generation's nearest rivals, the RTX A5500, Radeon PRO W7800, Radeon Pro W6900X, and A100 PCIe 40 GB, are all professional-grade GPUs with similar performance levels, confirming its workstation positioning. The Radeon 820M has no recorded rivals in the database, which is consistent with its status as a baseline IGP.

Users with a desktop workstation and a 550 W PSU should select the RTX 4500 Ada Generation based on the measured data. Users building a low-power mobile system should select the Radeon 820M, since the NVIDIA card's physical dimensions, power draw, and dual-slot design preclude its use in such systems. The two GPUs do not compete for the same socket, the same power budget, or the same workload profile. The database records no direct head-to-head benchmarks between them, and the specification gap is so wide that such tests would only confirm what the architecture differences already indicate.