AMD Radeon 840M vs NVIDIA GeForce RTX 4070 Comparison

The Verdict

The recorded data places these two GPUs at opposite ends of the performance spectrum. The AMD Radeon 840M, an integrated processor graphics solution, holds a 50th percentile ranking among all GPUs in the database. The NVIDIA GeForce RTX 4070 sits at the 81st percentile. The RTX 4070 delivers an average benchmark score of 37,648, while the 840M has no recorded benchmark scores, meaning its raw performance cannot be quantified from the database. The RTX 4070 is the clear choice for any workload requiring sustained rendering throughput, dedicated VRAM, or ray tracing. The 840M is strictly a low-power integrated solution for portable devices where energy consumption of 15 W is the primary constraint. The data shows no scenario where the 840M outperforms the RTX 4070 in measured benchmarks, as the RTX 4070 has ten recorded test scores and the 840M has zero.

Architecture Differences

The two chips come from fundamentally different design philosophies. The AMD Radeon 840M uses the RDNA 3.5 architecture, built on a 4 nm process at TSMC. It is part of the Navi III IGP generation for Strix Point Mobile, specifically the Krackan Point chip. The NVIDIA GeForce RTX 4070 uses the Ada Lovelace architecture on a 5 nm process, also from TSMC, with the AD104 chip. The RTX 4070 is a discrete, dual-slot card measuring 240 mm in length, 110 mm in height, and 40 mm in width. The 840M is an IGP with no slot width, no power connectors, and no length or height dimensions, as it is integrated into a portable device.

The transistor counts differ dramatically. The RTX 4070 packs 35,800 million transistors on a 294 mm² die, yielding a transistor density of 121.8M per mm². The 840M's transistor count and die size are listed as unknown in the database. The RTX 4070 has 5,888 shading units, 184 texture mapping units, and 64 raster output pipelines. The 840M has 256 shading units, 16 TMUs, and 8 ROPs. Ray tracing hardware also differs: the RTX 4070 contains 46 RT cores and 184 tensor cores, while the 840M has only 4 RT cores and no tensor cores.

Memory architecture is another major split. The RTX 4070 uses 12 GB of GDDR6X on a 192-bit bus, delivering 504.2 GB/s of bandwidth. The 840M uses system shared memory, with the bus width and bandwidth both listed as system dependent. The RTX 4070's memory clock runs at 1313 MHz, which translates to 21 Gbps effective. The 840M's memory clock is simply marked as system shared.

Clock speeds show contrasting strategies. The 840M has a base clock of 400 MHz and a boost clock of 2900 MHz, a very wide range typical of power-adaptive integrated graphics. The RTX 4070 has a base clock of 1920 MHz and a boost clock of 2475 MHz, a narrower range for a high-power discrete part. The 840M's power envelope is 15 W, while the RTX 4070 draws 200 W and requires a 550 W suggested power supply plus a single 16-pin connector.

FAQ

Q: Which GPU has more shading units?

A: The NVIDIA GeForce RTX 4070 has 5,888 shading units, while the AMD Radeon 840M has 256. The RTX 4070 also has 184 TMUs and 64 ROPs, compared to 16 TMUs and 8 ROPs on the 840M.

Q: What is the memory configuration of each card?

A: The RTX 4070 has 12 GB of GDDR6X on a 192-bit bus with 504.2 GB/s bandwidth. The 840M uses system shared memory; its size, type, bus width, and bandwidth are all listed as system dependent.

Q: How does the RTX 4070 rank against its nearest rivals?

A: The RTX 4070's average score of 37,648 is 0.1% above the NVIDIA Tesla P4 (37,628), 0.4% above the AMD Radeon RX Vega 56 (37,507), 1.3% above the AMD Radeon PRO W6400 (37,157), and 1.3% below the NVIDIA GeForce RTX 4080 Mobile (38,135).

Q: What is the production status of each part?

A: The AMD Radeon 840M is listed as active, with a release date of February 28, 2025. The NVIDIA GeForce RTX 4070 is end-of-life, released April 11, 2023, with the GeForce 50 series as its successor.

Q: Which APIs do both GPUs support?

A: Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RTX 4070 also has tensor cores for AI workloads, while the 840M does not.

Q: What is the pixel rate difference?

A: The RTX 4070 achieves 158.4 GPixel/s, compared to 23.20 GPixel/s for the 840M. The texture rates are 455.4 GTexel/s versus 46.40 GTexel/s, respectively.

Specification Differences

The two GPUs differ in nearly every measurable specification. The RTX 4070 is a discrete dual-slot card with a 200 W TDP and a 1x 16-pin power connector, requiring a 550 W suggested PSU. The 840M is an IGP with a 15 W TDP and no power connectors. The RTX 4070 has a PCIe 4.0 x16 interface, while the 840M uses PCIe 4.0 x8. Display outputs on the RTX 4070 include 1x HDMI 2.1 and 3x DisplayPort 1.4a; the 840M's outputs are portable device dependent.

The RTX 4070 has 5,888 shading units, 184 TMUs, 64 ROPs, 46 RT cores, and 184 tensor cores. The 840M has 256 shading units, 16 TMUs, 8 ROPs, and 4 RT cores, with no tensor cores. The RTX 4070's FP32 compute is 29.15 TFLOPS, and FP16 is also 29.15 TFLOPS (1:1). The 840M's FP32 is 1,484.8 GFLOPS, with FP16 at the same 1,484.8 GFLOPS (1:1) ratio.

Process nodes differ: 4 nm for the 840M versus 5 nm for the RTX 4070, both from TSMC. The RTX 4070 has 35,800 million transistors and a 294 mm² die with a density of 121.8M per mm². The 840M's transistor count and die size are unknown. The RTX 4070's base clock is 1920 MHz with a boost of 2475 MHz; the 840M's base is 400 MHz with a boost of 2900 MHz. The RTX 4070 has 12 GB of GDDR6X on a 192-bit bus with 504.2 GB/s bandwidth, while the 840M uses system shared memory with system dependent bandwidth.

The RTX 4070 was released April 11, 2023, and is end-of-life, with a launch MSRP of 599 USD. The 840M was released February 28, 2025, and remains active. The RTX 4070's predecessor is the GeForce 30 series, and its successor is the GeForce 50 series. The 840M's predecessor is the Navi II IGP, and it has no successor listed.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries between these two GPUs. However, the RTX 4070 has a full suite of ten individual benchmark scores, while the 840M has none. This absence itself is informative: the 840M lacks any recorded performance data, making direct numerical comparison impossible.

The RTX 4070's benchmark results show a wide range of performance across different test types. In synthetic 3DMark Steel Nomad DX12, it scores 3,854. Geekbench OpenCL yields 154,858, and Geekbench Vulkan scores 174,152. Passmark tests produce varied results: DirectX 10 at 139, DirectX 11 at 244, DirectX 12 at 103, DirectX 9 at 320, G2D at 1,164, G3D at 26,927, and GPU Compute at 14,720. The average benchmark score is 37,648.

The RTX 4070 sits at the 81st percentile among all GPUs. Its nearest rivals in the database are the NVIDIA Tesla P4 (37,628 average, 0.1% behind), AMD Radeon RX Vega 56 (37,507, 0.4% behind), NVIDIA GeForce RTX 4080 Mobile (38,135, 1.3% ahead), and AMD Radeon PRO W6400 (37,157, 1.3% behind). These small deltas indicate the RTX 4070 clusters tightly with other high-end GPUs from previous generations.

For the 840M, the 50th percentile ranking places it in the middle of the database, but with zero benchmark scores, the percentile is based on specifications alone. The lack of any test results means the data cannot confirm its real-world performance. The 840M's FP32 throughput of 1,484.8 GFLOPS is roughly 5% of the RTX 4070's 29.15 TFLOPS, but this is a theoretical peak, not a measured result.

Where Each One Wins

Based strictly on the recorded data, the NVIDIA GeForce RTX 4070 wins across every measurable category. It has ten benchmark scores spanning DirectX 9 through DirectX 12, OpenCL, Vulkan, and compute workloads. Its 81st percentile ranking and 37,648 average score place it firmly in the upper tier of the database. The RTX 4070's 12 GB of dedicated GDDR6X memory with 504.2 GB/s bandwidth provides a fixed memory subsystem, unlike the 840M's system dependent shared memory. The 46 RT cores and 184 tensor cores give it dedicated hardware for ray tracing and AI acceleration, features the 840M lacks entirely.

The AMD Radeon 840M wins only in power efficiency and integration. Its 15 W TDP is 12.5% of the RTX 4070's 200 W. It requires no power connectors, no slot width, and no suggested PSU. It is designed for portable devices, with display outputs that are portable device dependent. Its 4 nm process node is smaller than the RTX 4070's 5 nm node, and its boost clock of 2900 MHz is higher than the RTX 4070's 2475 MHz. These advantages matter only in low-power, space-constrained environments where a discrete GPU cannot physically fit.

The data suggests two distinct use cases. The RTX 4070 is for desktop systems with available PCIe 4.0 x16 slots, a 550 W PSU, and workloads demanding high pixel rates (158.4 GPixel/s), high texture rates (455.4 GTexel/s), and dedicated VRAM. The 840M is for laptops or mini PCs where the 15 W power envelope and IGP form factor are mandatory, accepting much lower compute (1,484.8 GFLOPS vs 29.15 TFLOPS) and no dedicated memory. The RTX 4070's end-of-life status and the 840M's active status indicate different market positions: one is a mature desktop product nearing replacement, the other a current mobile integration. For any user requiring measured benchmark performance, the RTX 4070 is the only option with data to support it.