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
GEFORCE
RTX 4000 SFF Ada Generation
CORE STATE
AD104
VRAM
20 GB
CLOCK SPEED
1560 MHz
TDP
70 W
BUS WIDTH
160 bit
ARCHITECTURE
Ada Lovelace
PROCESS
5 nm
LAUNCH DATE
2023
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
660M
RTX 4000 SFF Ada Generation
Core Specs
Shading Units
384
6,144
+1500.0%
Shaders
384
6,144
+1500.0%
TMUs
24
192
+700.0%
ROPs
16
64
+300.0%
Compute Units
6
—
SM Count
—
48
Clocks
Base Clock
1500 MHz
720 MHz
Boost Clock
1900 MHz
1560 MHz
Memory Clock
System Shared
1750 MHz
14 Gbps effective
Memory
Memory Size
System Shared
20 GB
VRAM (MB)
—
20,480
Memory Type
System Shared
GDDR6
Memory Bus
System Shared
160 bit
Bandwidth
System Dependent
280.0 GB/s
Cache
L1 Cache
128 KB per Array
128 KB (per SM)
L2 Cache
2 MB
48 MB
L0 Cache
32 KB per WGP
—
Performance
Pixel Rate
30.40 GPixel/s
99.84 GPixel/s
Texture Rate
45.60 GTexel/s
299.5 GTexel/s
FP32 (TFLOPS)
1,459.2 GFLOPS
19.17 TFLOPS
FP64 (TFLOPS)
91.20 GFLOPS (1:16)
299.5 GFLOPS (1:64)
FP16 (TFLOPS)
2.918 TFLOPS (2:1)
19.17 TFLOPS (1:1)
AI/RT
RT Cores
6
48
+700.0%
Tensor Cores
—
192
Power
TDP
40 W
70 W
TDP (W)
40
70
+75.0%
Suggested PSU
—
250 W
Power Connectors
None
None
Architecture
Architecture
RDNA 2.0
Ada Lovelace
GPU Name
Rembrandt
AD104
Generation
Navi II IGP
(Rembrandt Mobile)
Workstation Ada
(x000A)
Process Size
6 nm
5 nm
Transistors
13,100 million
35,800 million
Die Size
208 mm²
294 mm²
Foundry
TSMC
TSMC
Density
63.0M / mm²
121.8M / 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
3.0
CUDA
—
8.9
Shader Model
6.8
6.8
Physical
Slot Width
IGP
Dual-slot
Length
—
168 mm
6.6 inches
Height
—
69 mm
2.7 inches
Outputs
Portable Device Dependent
4x mini-DisplayPort 1.4a
Bus Interface
PCIe 4.0 x8
PCIe 4.0 x16
Other
Production
End-of-life
Active
Predecessor
Vega II IGP
Workstation Ampere
Successor
Navi III IGP
Blackwell PRO W