AMD Radeon 840M vs AMD Radeon PRO W7700 Comparison

The Verdict

The data presents a stark performance hierarchy. The AMD Radeon PRO W7700 occupies the 95th percentile of all GPUs in the database, while the AMD Radeon 840M sits at the 50th percentile. This is a discrete workstation-class graphics card facing an integrated processor. The PRO W7700 is the clear choice for any workload requiring substantial compute throughput, professional visualization, or high-bandwidth memory. The 840M is the option for ultra-portable systems where power draw is the primary constraint. There is no scenario in the recorded data where the 840M outperforms the PRO W7700 in raw compute. The PRO W7700's average benchmark score of 118,976 against the 840M's recorded average of 0 confirms the latter has no standard benchmark entries in the database, making direct numerical comparison impossible. The verdict is straightforward: the PRO W7700 for performance, the 840M for integration.

Architecture Differences

The two GPUs come from different generations of AMD's RDNA architecture. The Radeon 840M uses RDNA 3.5, fabricated on a 4 nm process at TSMC, and is part of the Krackan Point chip. It belongs to the Navi III IGP generation for Strix Point Mobile. In contrast, the Radeon PRO W7700 uses RDNA 3.0, fabricated on a 5 nm process, with a die size of 346 mm² and 28,100 million transistors. The transistor density for the PRO W7700 is recorded as 81.2M per mm², while the 840M's transistor count and die size are listed as unknown.

The architectural scale differs enormously. The 840M has 256 shading units, 16 texture mapping units, and 8 raster operation pipelines. The PRO W7700 has 3,072 shading units, 192 TMUs, and 96 ROPs. Ray tracing hardware shows a similar disparity: 4 RT cores on the 840M versus 48 on the PRO W7700. Neither GPU lists tensor cores in the database. The PRO W7700's memory subsystem is dedicated GDDR6, 16 GB on a 256-bit bus, delivering 576.0 GB/s of bandwidth. The 840M uses system-shared memory with bandwidth described as system dependent. Clock behavior also differs: the 840M has a base clock of 400 MHz and a boost of 2900 MHz, while the PRO W7700 operates at 1900 MHz base and 2600 MHz boost. The PRO W7700's higher base clock and massive execution resource pool yield far higher fill rates and compute figures. The 840M is a 15 W integrated part; the PRO W7700 is a 190 W dual-slot card requiring a single 8-pin power connector and a 450 W suggested power supply.

Where Each One Wins

The Radeon PRO W7700 wins in every measurable performance category present in the database. Its pixel rate is 249.6 GPixel/s versus 23.20 GPixel/s for the 840M. Texture rate is 499.2 GTexel/s versus 46.40 GTexel/s. FP32 compute is 31.95 TFLOPS versus 1,484.8 GFLOPS. FP16 performance is 63.90 TFLOPS on the PRO W7700, while the 840M delivers 1,484.8 GFLOPS with a 1:1 ratio. The PRO W7700's FP16 figure uses a 2:1 ratio, indicating a different execution path for half-precision work. In practical terms, the PRO W7700 is suited for tasks like GPU-accelerated rendering, large dataset visualization, and compute-heavy professional applications. The 840M, with its system-shared memory and 15 W TDP, is positioned for basic graphics output in mobile devices. Its boost clock of 2900 MHz is higher than the PRO W7700's 2600 MHz, but the core count difference overwhelms any clock advantage. The PRO W7700's 16 GB of dedicated GDDR6 memory with 576.0 GB/s bandwidth is critical for professional workloads; the 840M's memory performance is entirely dependent on the host system.

The database records two benchmark scores for the PRO W7700: 108,245 in Geekbench OpenCL and 129,706 in Geekbench Vulkan. No benchmark scores are recorded for the 840M. The PRO W7700's nearest rivals in the database include the NVIDIA GB10 with an average score of 117,393 (1.3% difference), the NVIDIA RTX 4000 SFF Ada Generation at 117,088 (1.6% difference), the NVIDIA Tesla V100 SXM2 16 GB at 114,395 (4% difference), and the NVIDIA RTX A5500 Mobile at 113,944 (4.4% difference). These deltas show the PRO W7700 leading its closest competitors by a narrow margin, between 1.3% and 4.4%. The 840M has no nearest rivals listed.

FAQ

Q: Which GPU has the higher boost clock?

A: The AMD Radeon 840M has a boost clock of 2900 MHz, while the AMD Radeon PRO W7700 boosts to 2600 MHz.

Q: How much memory does each GPU have?

A: The Radeon PRO W7700 has 16 GB of GDDR6 memory on a 256-bit bus with 576.0 GB/s bandwidth. The Radeon 840M uses system-shared memory with no dedicated capacity, bus width, or bandwidth specified in the database.

Q: What is the power consumption difference?

A: The Radeon 840M has a TDP of 15 W. The Radeon PRO W7700 has a TDP of 190 W, requires a single 8-pin power connector, and has a suggested power supply of 450 W.

Q: Are there benchmark scores for the Radeon 840M?

A: The database lists no benchmark entries for the 840M. Its average benchmark score is recorded as 0, and its percentile ranking among all GPUs is 50. The PRO W7700 has an average benchmark score of 118,976 and sits in the 95th percentile.

Q: What are the nearest rivals to the PRO W7700?

A: The nearest rivals are the NVIDIA GB10 (average score 117,393, 1.3% behind), NVIDIA RTX 4000 SFF Ada Generation (117,088, 1.6% behind), NVIDIA Tesla V100 SXM2 16 GB (114,395, 4% behind), and NVIDIA RTX A5500 Mobile (113,944, 4.4% behind).

Q: What memory clock does the PRO W7700 use?

A: The PRO W7700 memory operates at 2250 MHz with 18 Gbps effective speed.

Head-to-Head Benchmarks

The database includes no direct head-to-head benchmark results between the Radeon 840M and the Radeon PRO W7700. The wins count shows 0 for the 840M and 0 for the PRO W7700 in this pairing. However, the PRO W7700's standalone scores provide context for its standing. In Geekbench OpenCL, it scores 108,245. In Geekbench Vulkan, it scores 129,706. The average of these two results is 118,976.

The PRO W7700's nearest rival data places its performance in a competitive field. The NVIDIA GB10 averages 117,393, which is 1.3% lower. The NVIDIA RTX 4000 SFF Ada Generation averages 117,088, 1.6% lower. The NVIDIA Tesla V100 SXM2 16 GB averages 114,395, 4% lower. The NVIDIA RTX A5500 Mobile averages 113,944, 4.4% lower. These margins are small, indicating the PRO W7700 is tightly clustered with these high-end parts. The 840M has no comparable data points. Its absence from the benchmark table means the database cannot substantiate any performance claim for it beyond its architectural specifications. The FP32 compute difference is illustrative: the PRO W7700 delivers 31.95 TFLOPS, more than 21 times the 840M's 1,484.8 GFLOPS. Texture rate differs by a factor of roughly 10.8, and pixel rate by a factor of roughly 10.8 as well. These ratios come directly from the recorded figures.

Specification Differences

The two GPUs differ in nearly every recorded specification. The Radeon 840M uses the Krackan Point chip on a 4 nm process, while the PRO W7700 uses Navi 32 on a 5 nm process. The PRO W7700's die is 346 mm² with 28,100 million transistors; the 840M's die size and transistor count are unknown. The 840M has a base clock of 400 MHz and a boost clock of 2900 MHz. The PRO W7700 has a base clock of 1900 MHz and a boost clock of 2600 MHz. Memory configurations are entirely different: the 840M relies on system-shared memory, while the PRO W7700 has 16 GB GDDR6, a 256-bit bus, and 576.0 GB/s bandwidth. The memory clock for the PRO W7700 is 2250 MHz with 18 Gbps effective speed. The 840M has no discrete memory clock.

Execution resources differ by an order of magnitude. The 840M has 256 shading units, 16 TMUs, 8 ROPs, and 4 RT cores. The PRO W7700 has 3,072 shading units, 192 TMUs, 96 ROPs, and 48 RT cores. Pixel rate is 23.20 GPixel/s for the 840M and 249.6 GPixel/s for the PRO W7700. Texture rate is 46.40 GTexel/s versus 499.2 GTexel/s. FP32 compute is 1,484.8 GFLOPS versus 31.95 TFLOPS. FP16 compute is 1,484.8 GFLOPS (1:1) for the 840M and 63.90 TFLOPS (2:1) for the PRO W7700. Power consumption is 15 W versus 190 W. The 840M is an IGP with no power connectors and a PCIe 4.0 x8 interface. The PRO W7700 is a dual-slot card, 241 mm long and 111 mm high, with one 8-pin connector, a 450 W suggested PSU, and a PCIe 4.0 x16 interface. Display outputs are portable-device dependent on the 840M, while the PRO W7700 has four DisplayPort 2.1 outputs. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The 840M was released on 2025-02-28. The PRO W7700 was released on 2023-11-12, has a launch MSRP of 999 USD, and succeeds the Radeon Pro Vega. The 840M's predecessor is listed as Navi II IGP.