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AMD Radeon 660M

AMD Radeon 660M

The AMD Radeon 660M is an integrated GPU in the entry level Ryzen 6000 series for laptops (Rembrandt, e.g. Ryzen 5 6600U). The GPU is based on the RDNA2 architecture and has 6 of the 12 CUs (= 384 shaders) clocked at up to 1,900 MHz (depending on the CPU model). The 680M and 660M iGPUs are the first integrated graphics card with hardware raytracing support, although the performance is too slow to use it in current games.

Due to the halved CU count and lower core clock, the Radeon 660M is clearly slower than the Radeon 680M and most likely only on par with the old Radeon Vega 8 iGPUs

Thanks to the modern 6nm process and clever power-saving features, the power consumption is comparatively low (according to AMD), so the graphics card can also be used for slim and light notebooks (depending on the CPU model).

AMD Radeon 600M Series

Radeon 680M compare 768 @ 2.4 GHz
Radeon 660M 384 @ 1.9 GHz
Radeon Graphics (Ryzen 7000) compare 128 @ 2.2 GHz
Radeon 610M compare 128
CodenameRDNA 2 Rembrandt
ArchitectureRDNA 2
Pipelines384 - unified
Core Speed1900 (Boost) MHz
Shared Memoryno
APIDirectX 12_1
Power Consumption45 Watt
FeaturesTiled Rasterization, Shared Memory (up to Dual-Channel DDR4-3200)
Date of Announcement04.01.2022
CPU in Radeon 660MGPU Base SpeedGPU Boost / Turbo
AMD Ryzen 5 PRO 6650H6 x 3300 MHz, 45 W? MHz1900 MHz
AMD Ryzen 5 6600H6 x 3300 MHz, 45 W? MHz1900 MHz
AMD Ryzen 5 PRO 6650HS6 x 3300 MHz, 35 W? MHz1900 MHz
min. - max.? MHz1800 - 1900 MHz

Benchmarks

Performance Rating - 3DMark 11 + Fire Strike + Time Spy
14 pt (14%)
3DMark Vantage
3DM Vant. Perf. total +
3DM Vant. Perf. GPU no PhysX +
3DMark 06 3DMark 06 - Standard 1280x1024 +
Blender - Blender 3.3 Classroom HIP *
min: 527     avg: 617     median: 569 (61%)     max: 755 Seconds
Cinebench R10 Cinebench R10 Shading (32bit) +
Cinebench R11.5 Cinebench R11.5 OpenGL 64 Bit +
Cinebench R15
Cinebench R15 OpenGL 64 Bit +
Cinebench R15 OpenGL Ref. Match 64 Bit +
Power Consumption - Furmark Stress Test Power Consumption - external Monitor *
min: 28.3     avg: 35.7     median: 36.9 (5%)     max: 40.7 Watt
05101520253035404550Tooltip
Power Consumption - The Witcher 3 Power Consumption - external Monitor *
min: 24.8     avg: 32.7     median: 33.9 (5%)     max: 38.4 Watt
051015202530354045505560657075Tooltip