AMD Radeon 780M vs AMD Radeon 680M: Integrated GPU Comparison and Performance

Here’s everything you need to know about gaming performance, frame rates, and benchmarks on Radeon 780M and 680M.

Both the Radeon 780M and 680M are high-performance integrated GPUs for laptops and handheld devices. These offer incredible performance and are extremely energy efficient. The 780M is based on RDNA 3, while the 680M is based on RDNA 2. The guide below compares the two and highlights which is better.

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AMD Radeon 780M vs Radeon 680M: Detailed Comparison

AMD Radeon 780M vs Radeon 680M: Detailed Comparison

Handheld with the Radeon 780M iGPU (Image via ASUS)

The 780M is the flagship RDNA 3 iGPU; it comes integrated within the Phoenix-based Ryzen 8040/7000 series APUs, such as the Ryzen 7 8840Hs. The 680M is the RDNA 2-powered flagship APU and is incorporated into Rembrandt-based Ryzen 6000 series APUs, such as the Ryzen 7 6800H. Below is a detailed comparison of the two.

Specs Comparison

Specifications	AMD Radeon 780M	AMD Radeon 680M
Architecture	RDNA 3 (Phoenix)	RDNA 2 (Rembrandt)
Shaders / Cores	768 (12 Compute Units)	768 (12 Compute Units)
Clock Speed (Base/Boost)	800-2900 MHz	2000-2200 MHz
Texture Mapping Units	48	48
Render Output Units	32	32
Ray Tracing Cores	12 (2nd Gen)	12 (1st Gen)
Manufacturing Process	4nm (TSMC)	6nm (TSMC)
Theoretical Performance	8.9 TFLOPS (FP32)	3.4 TFLOPS (FP32)
Memory Support	LPDDR5X-7500 / DDR5-5600 (Shared)	DDR5-4800 / LPDDR5-6400 (Shared)
Power Consumption (TDP)	15-54W (Configurable)	15-50W (Configurable)
API Support	DirectX 12 Ultimate, Vulkan 1.3, OpenCL 2.1	DirectX 12 Ultimate, Vulkan 1.3, OpenCL 2.1

Spec-wise, both are similar, as the number of compute units (CU) remains the same. However, when we look at claimed theoretical performance, the difference is enormous: the RDNA 3-based 780M iGPU has around 8.9 TFLOPS of FP32 compute, whereas the RDNA 2-powered 680M has 3.4 TFLOPS.

Synthetic Performance Comparison

Benchmark	Radeon 780M	Radeon 680M
3DMark Time Spy (Graphics)	2800	2200
3DMark Steel Nomad Lite	1900	1450
Geekbench 6 OpenCL	30500	28500
SPECviewperf 2020 (Overall)	42	38

When looking at synthetic performance, the massive jump in FP32 compute is not noticeable. Yes, the 780M is faster, but not astronomically so —around 5-10% at best.

Gaming Performance Comparison

These FPS numbers are sourced from publicly available information across the internet. Most of the settings were low and implemented upscaling, meaning. Games were running at 900p internally and then were outputting a 1080p image.

Game	Radeon 780M	Radeon 680M
Cyberpunk 2077	19 FPS	15 FPS
Forza Horizon 5	51 FPS	42 FPS
The Witcher 3	27 FPS	20 FPS
Counter-Strike 2	44 FPS	37 FPS
Far Cry 6	37 FPS	34 FPS
Hogwarts Legacy	18 FPS	16 FPS
Shadow of the Tomb Raider	35 FPS	29 FPS

We can see a generational gaming performance uplift of around 25-30% over here. RDNA 3’s improvements, at a similar power budget and with identical specs, are clearly visible, as it’s faster in every scene.

Final Verdict on AMD Radeon 780M vs Radeon 680M

The Radeon 780M is the clear winner for both handhelds and laptops, offering incredible gaming performance within a limited power budget. There are many handhelds, such as the GPD Win 4, that provide a 780M-enabled Ryzen 7 8840U.

If you are going for either a mini PC or a handheld, buying the better 780M one makes more sense because it will be more efficient and deliver much higher frame rates than previous-generation parts.

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AMD Radeon 780M vs AMD Radeon 680M: Integrated GPU Comparison and Performance