AMD Radeon 820M vs NVIDIA GeForce RTX 4070 Mobile Comparison

# AMD Radeon 820M vs NVIDIA GeForce RTX 4070 Mobile

The AMD Radeon 820M and NVIDIA GeForce RTX 4070 Mobile occupy opposite ends of the mobile graphics spectrum. The Radeon 820M is an integrated processor graphics solution built on RDNA 3.5, while the RTX 4070 Mobile is a dedicated Ada Lovelace-based GPU. Benchmark data shows the RTX 4070 Mobile delivers dramatically higher compute and graphics performance, with the Radeon 820M serving as a low-power IGP for basic tasks.

Where Each One Wins

The RTX 4070 Mobile wins every recorded benchmark category. Its average benchmark score is 27,435, placing it in the 73rd percentile of all GPUs in the database. The Radeon 820M has an average benchmark score of 0 with a 50th percentile ranking, though the database contains no individual benchmark entries for it. This means the comparison is entirely one-sided: the NVIDIA part dominates across compute, DirectX, and general graphics workloads.

Looking at specific tests, the RTX 4070 Mobile scores 109,197 in Geekbench OpenCL and 108,367 in Geekbench Vulkan. These compute-oriented results show its strength in GPU-accelerated applications that leverage OpenCL or Vulkan compute. The Passmark suite further illustrates its range: 19587 in G3D, 8399 in GPU Compute, 763 in G2D, 223 in DirectX 9, 179 in DirectX 11, 116 in DirectX 10, and 85 in DirectX 12.

The Radeon 820M has no benchmark scores recorded in the database, so its wins are limited to architectural or specification advantages. It draws 15 W against the RTX 4070 Mobile’s 115 W, making it far more power-efficient for thin-and-light laptops. Its base clock of 400 MHz and boost clock of 2800 MHz reflect a design focused on low-power operation rather than raw throughput. The Radeon 820M also uses system shared memory, which eliminates the need for dedicated VRAM and reduces system cost and complexity.

For users who need heavy graphics performance, the RTX 4070 Mobile is the clear winner. For users who need basic display output and modest 3D acceleration in an ultraportable, the Radeon 820M provides that capability at a fraction of the power draw.

The Verdict

The data points to a simple conclusion: the RTX 4070 Mobile is a high-performance mobile GPU, while the Radeon 820M is a basic integrated solution. The RTX 4070 Mobile’s average benchmark score of 27,435 puts it roughly on par with the AMD Radeon RX 6700 XT (average score 27,425, difference 0 percent), slightly ahead of the NVIDIA GeForce RTX 3090 (27,565, 0.5 percent behind), and slightly behind the AMD Radeon Pro Vega 20 (27,839, 1.5 percent ahead). These close margins show the RTX 4070 Mobile competes with desktop-class GPUs from previous generations.

The Radeon 820M has no recorded benchmarks, no nearest rivals, and no average score. Its 50th percentile ranking appears to reflect its position among all GPUs in the database, but without test data, performance claims cannot be quantified. What the database does show is its specifications: 128 shading units, 8 texture mapping units, 4 raster output units, 2 ray tracing cores, and a 15 W TDP. These are minimal resources compared to the RTX 4070 Mobile’s 4608 shading units, 144 TMUs, 48 ROPs, 36 RT cores, and 144 tensor cores.

Who should pick which? A user who needs to run modern games, render 3D scenes, or accelerate compute workloads should choose the RTX 4070 Mobile. A user who needs a basic integrated GPU for office work, video playback, or light productivity in a low-power laptop should consider the Radeon 820M. The RTX 4070 Mobile is not a replacement for an IGP; it is a dedicated GPU for demanding tasks. The Radeon 820M is not a gaming GPU; it is an entry-level integrated solution.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries between these two GPUs. However, the RTX 4070 Mobile’s individual benchmark scores provide a clear picture of its capabilities. In Geekbench OpenCL, it scores 109,197, and in Geekbench Vulkan, it scores 108,367. These two compute tests show the GPU handles both OpenCL and Vulkan workloads at similar levels, indicating strong general-purpose compute performance.

In the Passmark suite, the RTX 4070 Mobile scores 19,587 in G3D, which represents overall 3D graphics performance. Its GPU Compute score of 8,399 shows compute throughput is roughly 43 percent of its 3D score, a typical ratio for gaming-focused GPUs. The G2D score of 763 covers 2D graphics operations, which are less demanding and show less differentiation. DirectX scores vary: DirectX 9 at 223, DirectX 11 at 179, DirectX 12 at 85, and DirectX 10 at 116. The DirectX 12 score being the lowest is notable, as modern games increasingly use DirectX 12.

Comparing these scores to the nearest rivals in the database, the RTX 4070 Mobile’s average of 27,435 sits between the RX 6700 XT (27,425) and the RTX 3090 (27,565). The difference of 0 percent against the RX 6700 XT means the two GPUs deliver essentially identical average performance. Against the RTX 3090, the RTX 4070 Mobile trails by 0.5 percent, a negligible margin. Against the Radeon Pro Vega 20 (27,839), it is 1.5 percent behind. These comparisons place the RTX 4070 Mobile in the upper tier of GPUs in the database.

The Radeon 820M has no benchmark scores, so no head-to-head comparison can be made. Its 15 W TDP and 128 shading units suggest it targets basic tasks, but the database does not quantify its performance.

FAQ

Q: What is the average benchmark score of the RTX 4070 Mobile?

A: The RTX 4070 Mobile has an average benchmark score of 27,435 across all recorded tests.

Q: Does the Radeon 820M have any recorded benchmark scores?

A: No. The database lists no benchmarks for the Radeon 820M, and its average benchmark score is 0.

Q: How does the RTX 4070 Mobile compare to the AMD Radeon RX 6700 XT?

A: The RTX 4070 Mobile scores 27,435 on average, while the RX 6700 XT scores 27,425. The difference is 0 percent, meaning they perform essentially identically.

Q: What is the power draw of each GPU?

A: The Radeon 820M has a TDP of 15 W, while the RTX 4070 Mobile has a TDP of 115 W.

Q: What memory configuration does the RTX 4070 Mobile use?

A: The RTX 4070 Mobile has 8 GB of GDDR6 memory on a 128-bit bus, with 256.0 GB/s bandwidth and a memory clock of 2000 MHz (16 Gbps effective).

Q: What is the RTX 4070 Mobile’s percentile ranking?

A: The RTX 4070 Mobile ranks in the 73rd percentile of all GPUs in the database.

Architecture Differences

The two GPUs use fundamentally different architectures. The Radeon 820M is built on RDNA 3.5, AMD’s latest graphics architecture for integrated processors. It uses a 4 nm process node from TSMC. The chip is named Krackan Point 2, and it belongs to the Navi III IGP generation for Strix Point Mobile. The RTX 4070 Mobile uses Ada Lovelace, NVIDIA’s architecture for GeForce 40-series GPUs. Its chip is AD106, manufactured on a 5 nm TSMC process. The RTX 4070 Mobile has 22,900 million transistors on a die size of 188 mm², giving a transistor density of 121.8 million per mm². The Radeon 820M’s transistor count and die size are listed as unknown in the database.

The Radeon 820M has 128 shading units, 8 texture mapping units, 4 raster output units, and 2 ray tracing cores. It has no tensor cores. The RTX 4070 Mobile has 4608 shading units, 144 TMUs, 48 ROPs, 36 RT cores, and 144 tensor cores. The NVIDIA part has 36 times more shading units, 18 times more TMUs, 12 times more ROPs, and 18 times more RT cores. These differences explain the massive performance gap.

The Radeon 820M’s pixel rate is 11.20 GPixel/s, and its texture rate is 22.40 GTexel/s. Its FP32 performance is 716.8 GFLOPS, with FP16 at 716.8 GFLOPS (1:1 ratio). The RTX 4070 Mobile delivers 81.36 GPixel/s pixel rate, 244.1 GTexel/s texture rate, and 15.62 TFLOPS FP32, with FP16 at 15.62 TFLOPS (1:1). The RTX 4070 Mobile is roughly 7 times faster in pixel rate, 11 times faster in texture rate, and 22 times faster in FP32 compute.

Both GPUs support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Both use PCIe 4.0 x8 interfaces and have no power connectors, as they are designed for mobile systems. Both have display outputs described as portable device dependent.

Specification Differences

The key specification differences between the two GPUs are substantial. The Radeon 820M uses system shared memory, with no dedicated VRAM, while the RTX 4070 Mobile has 8 GB of GDDR6 memory on a 128-bit bus with 256.0 GB/s bandwidth. The Radeon 820M’s memory bandwidth is described as system dependent, meaning it varies by laptop configuration.

Clock speeds differ significantly. The Radeon 820M has a base clock of 400 MHz and a boost clock of 2800 MHz. The RTX 4070 Mobile has a base clock of 1395 MHz and a boost clock of 1695 MHz. Despite lower boost clocks, the RTX 4070 Mobile achieves far higher performance due to its much larger execution resource pool.

Power consumption is a major differentiator. The Radeon 820M has a 15 W TDP, making it suitable for passive cooling and fanless designs. The RTX 4070 Mobile has a 115 W TDP, requiring active cooling and larger battery capacities. Both are listed as IGP slot width, and both use PCIe 4.0 x8.

The process node differs: the Radeon 820M uses 4 nm TSMC, while the RTX 4070 Mobile uses 5 nm TSMC. Despite the smaller node, the Radeon 820M’s transistor count and die size are unknown, so density comparisons are not possible. The RTX 4070 Mobile has a transistor density of 121.8 million per mm².

Release dates differ as well. The Radeon 820M was released on February 28, 2025, while the RTX 4070 Mobile was released on January 2, 2023. The Radeon 820M’s predecessor is Navi II IGP, with no successor listed. The RTX 4070 Mobile’s predecessor is GeForce 30 Mobile, and its successor is GeForce 50 Mobile. Both are currently active in production.

The Radeon 820M has no tensor cores, while the RTX 4070 Mobile has 144. This makes the NVIDIA GPU suitable for AI and machine learning workloads that rely on tensor operations. The Radeon 820M’s 2 RT cores versus the RTX 4070 Mobile’s 36 RT cores also shows a large difference in ray tracing capability. The database lists no launch MSRP for either GPU.