AMD Radeon 780M vs AMD Radeon RX 7650 GRE Comparison

The AMD Radeon 780M and the AMD Radeon RX 7650 GRE occupy very different positions in the database, despite sharing the same RDNA 3.0 architecture. The 780M is an integrated graphics processor built into the Phoenix chip, while the RX 7650 GRE is a discrete, dual-slot add-in card from the Radeon RX 7000 series. The recorded data shows a clear separation in performance, power, and physical requirements, and the benchmark results consistently favor the discrete solution.

Where Each One Wins

The performance split between these two GPUs is not subtle. In the head-to-head benchmark data, the RX 7650 GRE wins both recorded tests, giving it two wins out of two. The 780M records zero wins. The average benchmark score for the RX 7650 GRE is 42,723, while the 780M averages 17,588. This places the RX 7650 GRE in the 83rd percentile of all GPUs in the database, whereas the 780M sits in the 61st percentile.

The 780M has a clear advantage in one specific area: power draw. Its thermal design power is 15 W, compared to 170 W for the RX 7650 GRE. This makes the 780M suitable for compact systems with no dedicated power connectors, as it draws power from the system memory interface. The RX 7650 GRE requires a single 8-pin power connector and a suggested power supply of 450 W.

The RX 7650 GRE wins on memory characteristics. It has 8 GB of dedicated GDDR6 memory on a 128-bit bus, delivering 288.0 GB/s of bandwidth. The 780M uses system shared memory, with bandwidth listed as system dependent. In applications where memory bandwidth is the limiting factor, the discrete card has a substantial structural advantage.

The RX 7650 GRE also wins on raw compute resources. It has 2,048 shading units, 128 texture mapping units, 64 render output units, and 32 ray tracing cores. The 780M has 768 shading units, 48 texture mapping units, 32 render output units, and 12 ray tracing cores. These differences translate directly into the measured performance gap.

Architecture Differences

Both GPUs use the RDNA 3.0 architecture from AMD, but they are built on different manufacturing processes and use different chips. The 780M uses the Phoenix chip on a 4 nm process at TSMC, with 25,390 million transistors on a 178 mm² die. The RX 7650 GRE uses the Navi 33 chip on a 6 nm process at TSMC, with 13,300 million transistors on a 204 mm² die.

The transistor density difference is notable. The 780M packs 142.6 million transistors per square millimeter, while the RX 7650 GRE has 65.2 million per square millimeter. The 780M achieves higher density by using the more advanced 4 nm node. Despite having fewer total transistors, the RX 7650 GRE still delivers much higher performance due to its larger allocation of shading units, texture units, and render output units.

Clock behavior differs significantly. The 780M has a base clock of 800 MHz and a boost clock of 2900 MHz. The RX 7650 GRE has a base clock of 1720 MHz, a game clock of 2350 MHz, and a boost clock of 2695 MHz. The 780M has a higher maximum boost clock, but the RX 7650 GRE has a much higher base clock and a specified game clock that the integrated part lacks.

The memory architecture is another major distinction. The 780M has no dedicated memory; it uses system shared memory for both capacity and bandwidth. The RX 7650 GRE has 8 GB of GDDR6 at 2250 MHz with 18 Gbps effective speed, on a 128-bit bus. This gives the discrete card a fixed 288.0 GB/s bandwidth, while the integrated part's bandwidth is entirely dependent on the host system.

The RX 7650 GRE is part of the Radeon RX 7000 series with the codename Hotpink Bonefish, and its generation is listed as Navi III (RX 7000). The 780M is in the Navi III IGP (Phoenix) generation. The RX 7650 GRE has a predecessor of Navi II and a successor of Navi IV. The 780M has a predecessor of Navi II IGP and a successor of Navi III IGP.

Both support the same API set: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Both use a PCIe 4.0 x8 bus interface. The display outputs differ, with the 780M being motherboard dependent and the RX 7650 GRE offering 1x HDMI 2.1a and 3x DisplayPort 2.1.

Head-to-Head Benchmarks

The database contains two head-to-head tests between these GPUs, and the RX 7650 GRE wins both by a wide margin. In the 3DMark Steel Nomad DX12 test, the RX 7650 GRE scores 2,336 while the 780M scores 480. The performance difference is 79.5 percent in favor of the discrete card. This means the RX 7650 GRE delivers roughly five times the score of the 780M in this DirectX 12 workload.

In the Geekbench OpenCL test, the RX 7650 GRE scores 83,109 while the 780M scores 18,602. The difference is 77.6 percent in favor of the RX 7650 GRE. This test measures general compute performance through the OpenCL API, and the discrete card's larger shading unit count and dedicated memory contribute to its dominance.

The average benchmark score difference reinforces these results. The RX 7650 GRE averages 42,723, which is more than double the 780M's 17,588. The RX 7650 GRE sits near the NVIDIA GeForce RTX 4070 SUPER in the database, with a performance difference of only 1.2 percent. The 780M sits near the AMD Radeon Pro 560, with a 0.2 percent difference.

The 780M has one additional benchmark in its record: a Geekbench Vulkan score of 33,683. The RX 7650 GRE does not have a corresponding Vulkan entry in the database, so no direct comparison is possible for that test. The 780M's Vulkan score is higher than its OpenCL score, suggesting the integrated GPU handles the Vulkan API efficiently relative to its own OpenCL performance.

The percentile data places the RX 7650 GRE in the 83rd percentile of all GPUs, which is well above the 780M's 61st percentile. This gap in percentile ranking aligns with the raw score differences and indicates that the discrete card competes with much higher-tier hardware overall.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The AMD Radeon RX 7650 GRE has an average benchmark score of 42,723, while the AMD Radeon 780M has an average of 17,588.

Q: How much faster is the RX 7650 GRE in the 3DMark Steel Nomad DX12 test?

A: The RX 7650 GRE scores 2,336 compared to 480 for the 780M, a difference of 79.5 percent in favor of the discrete card.

Q: Do both GPUs use the same architecture?

A: Yes, both use RDNA 3.0, but they are built on different processes. The 780M uses a 4 nm process, and the RX 7650 GRE uses a 6 nm process.

Q: What is the memory configuration difference?

A: The RX 7650 GRE has 8 GB of GDDR6 on a 128-bit bus with 288.0 GB/s bandwidth. The 780M uses system shared memory with system dependent bandwidth.

Q: Which GPU has more shading units?

A: The RX 7650 GRE has 2,048 shading units, while the 780M has 768.

Q: What is the power consumption difference?

A: The 780M has a thermal design power of 15 W, while the RX 7650 GRE has a thermal design power of 170 W.

The Verdict

The data makes the performance hierarchy clear. The RX 7650 GRE is the stronger GPU in every recorded benchmark, with an average score of 42,723 versus 17,588 for the 780M. The discrete card wins both head-to-head tests, and its 83rd percentile ranking confirms its position well above the 780M's 61st percentile.

The 780M's role is defined by its integration and efficiency. At 15 W, it fits into systems with no dedicated power connectors and no expansion slot. Its performance is sufficient for light graphics workloads, and its Vulkan score of 33,683 shows it handles modern APIs reasonably well for an integrated part. The 780M is the appropriate choice for compact, low-power systems where the motherboard provides display outputs.

The RX 7650 GRE is the choice for users who need dedicated graphics performance. Its 8 GB of GDDR6 memory, 288.0 GB/s bandwidth, and 22.08 TFLOPS of FP32 compute make it suitable for demanding applications. It requires a dual-slot expansion card layout, a single 8-pin power connector, and a suggested 450 W power supply. The card measures 204 mm in length and 115 mm in height.

The architecture relationship is interesting. Both GPUs use RDNA 3.0, and the 780M achieves a higher transistor density at 142.6 million per square millimeter due to its 4 nm process. The RX 7650 GRE uses a larger 204 mm² die but with a lower density of 65.2 million per square millimeter. The discrete card compensates with far more execution resources, which explains its benchmark dominance.

The RX 7650 GRE's position near the NVIDIA GeForce RTX 4070 SUPER, with a performance difference of only 1.2 percent, places it in a competitive segment of the database. The 780M sits near the AMD Radeon Pro 560 and AMD Radeon Pro 460, with differences of 0.2 percent and 0.5 percent respectively. These comparisons show that the integrated part performs at a level similar to older discrete mobile GPUs, while the RX 7650 GRE operates at a much higher tier.

The choice between these two is dictated by system constraints and performance needs. The 780M offers integrated graphics with no discrete memory and no power connector requirement. The RX 7650 GRE offers dedicated memory, higher compute throughput, and a much higher average benchmark score, at the cost of 170 W of power draw and a physical expansion card footprint.

Specification Differences

The two GPUs differ in nearly every major specification category. The 780M uses the Phoenix chip on a 4 nm process with 25,390 million transistors on a 178 mm² die. The RX 7650 GRE uses the Navi 33 chip on a 6 nm process with 13,300 million transistors on a 204 mm² die. Transistor density is 142.6 million per square millimeter for the 780M and 65.2 million for the RX 7650 GRE.

Clock speeds differ in structure. The 780M has a base clock of 800 MHz and a boost clock of 2900 MHz. The RX 7650 GRE has a base clock of 1720 MHz, a game clock of 2350 MHz, and a boost clock of 2695 MHz. Memory clocks are listed as system shared for the 780M, while the RX 7650 GRE runs at 2250 MHz with 18 Gbps effective.

Memory capacity, type, bus width, and bandwidth all differ. The 780M uses system shared memory with system dependent bandwidth. The RX 7650 GRE has 8 GB of GDDR6, a 128-bit bus, and 288.0 GB/s bandwidth.

Execution resources are substantially different. The 780M has 768 shading units, 48 TMUs, 32 ROPs, and 12 ray tracing cores. The RX 7650 GRE has 2,048 shading units, 128 TMUs, 64 ROPs, and 32 ray tracing cores.

Pixel and texture rates favor the discrete card. The 780M delivers 92.80 GPixel/s and 139.2 GTexel/s. The RX 7650 GRE delivers 172.5 GPixel/s and 345.0 GTexel/s. FP32 compute is 8.909 TFLOPS for the 780M and 22.08 TFLOPS for the RX 7650 GRE. FP16 is 8.909 TFLOPS (1:1) for the 780M and 22.08 TFLOPS (1:1) for the RX 7650 GRE.

Power and physical specifications differ sharply. The 780M has a TDP of 15 W, is an IGP with no slot width, and has no power connectors. The RX 7650 GRE has a TDP of 170 W, is dual-slot, uses one 8-pin connector, and has a suggested power supply of 450 W. The RX 7650 GRE measures 204 mm in length and 115 mm in height.

Display outputs differ. The 780M is motherboard dependent. The RX 7650 GRE has 1x HDMI 2.1a and 3x DisplayPort 2.1. Both use PCIe 4.0 x8 and support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RX 7650 GRE has a launch MSRP of 279 USD.