GPU Comparison
RADEON
AMD Radeon 660M
CORE STATE
Rembrandt
VRAM
System Shared
CLOCK SPEED
1900 MHz
TDP
40 W
BUS WIDTH
System Shared
ARCHITECTURE
RDNA 2.0
PROCESS
6 nm
LAUNCH DATE
2022
VS
RADEON
Radeon RX 6400
CORE STATE
Navi 24
VRAM
4 GB
CLOCK SPEED
2321 MHz
TDP
53 W
BUS WIDTH
64 bit
ARCHITECTURE
RDNA 2.0
PROCESS
6 nm
LAUNCH DATE
2022
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
3dmark_3dmark_steel_nomad_dx12
passmark_directx_10
passmark_directx_11
passmark_directx_12
passmark_directx_9
passmark_g2d
passmark_g3d
passmark_gpu_compute
DETAILED SPECIFICATIONS
SPECIFICATION
660M
RX 6400
Core Specs
Shading Units
384
768
+100.0%
Shaders
384
768
+100.0%
TMUs
24
48
+100.0%
ROPs
16
32
+100.0%
Compute Units
6
12
+100.0%
Clocks
Base Clock
1500 MHz
1923 MHz
Boost Clock
1900 MHz
2321 MHz
Game Clock
—
2039 MHz
Memory Clock
System Shared
2000 MHz
16 Gbps effective
Memory
Memory Size
System Shared
4 GB
VRAM (MB)
—
4,096
Memory Type
System Shared
GDDR6
Memory Bus
System Shared
64 bit
Bandwidth
System Dependent
128.0 GB/s
Cache
L1 Cache
128 KB per Array
128 KB per Array
L2 Cache
2 MB
1024 KB
L3 Cache
—
16 MB
L0 Cache
32 KB per WGP
32 KB per WGP
Performance
Pixel Rate
30.40 GPixel/s
74.27 GPixel/s
Texture Rate
45.60 GTexel/s
111.4 GTexel/s
FP32 (TFLOPS)
1,459.2 GFLOPS
3.565 TFLOPS
FP64 (TFLOPS)
91.20 GFLOPS (1:16)
222.8 GFLOPS (1:16)
FP16 (TFLOPS)
2.918 TFLOPS (2:1)
7.130 TFLOPS (2:1)
AI/RT
RT Cores
6
12
+100.0%
Power
TDP
40 W
53 W
TDP (W)
40
53
+32.5%
Suggested PSU
—
250 W
Power Connectors
None
None
Architecture
Architecture
RDNA 2.0
RDNA 2.0
GPU Name
Rembrandt
Navi 24
Generation
Navi II IGP
(Rembrandt Mobile)
Navi II
(RX 6000)
Process Size
6 nm
6 nm
Transistors
13,100 million
5,400 million
Die Size
208 mm²
107 mm²
Foundry
TSMC
TSMC
Density
63.0M / mm²
50.5M / mm²
API Support
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenGL
4.6
4.6
Vulkan
1.4
1.4
OpenCL
2.0
2.2
Shader Model
6.8
6.8
Physical
Slot Width
IGP
Single-slot
Outputs
Portable Device Dependent
1x HDMI 2.11x DisplayPort 1.4a
Bus Interface
PCIe 4.0 x8
PCIe 4.0 x4
Other
Launch Price
—
159 USD
Production
End-of-life
End-of-life
Predecessor
Vega II IGP
Navi
Successor
Navi III IGP
Navi III