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
Tesla P4
CORE STATE
GP104
VRAM
8 GB
CLOCK SPEED
1114 MHz
TDP
75 W
BUS WIDTH
256 bit
ARCHITECTURE
Pascal
PROCESS
16 nm
LAUNCH DATE
2016
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
660M
Tesla P4
Core Specs
Shading Units
384
2,560
+566.7%
Shaders
384
2,560
+566.7%
TMUs
24
160
+566.7%
ROPs
16
64
+300.0%
Compute Units
6
—
SM Count
—
20
Clocks
Base Clock
1500 MHz
886 MHz
Boost Clock
1900 MHz
1114 MHz
Memory Clock
System Shared
1502 MHz
6 Gbps effective
Memory
Memory Size
System Shared
8 GB
VRAM (MB)
—
8,192
Memory Type
System Shared
GDDR5
Memory Bus
System Shared
256 bit
Bandwidth
System Dependent
192.3 GB/s
Cache
L1 Cache
128 KB per Array
48 KB (per SM)
L2 Cache
2 MB
2 MB
L0 Cache
32 KB per WGP
—
Performance
Pixel Rate
30.40 GPixel/s
71.30 GPixel/s
Texture Rate
45.60 GTexel/s
178.2 GTexel/s
FP32 (TFLOPS)
1,459.2 GFLOPS
5.704 TFLOPS
FP64 (TFLOPS)
91.20 GFLOPS (1:16)
178.2 GFLOPS (1:32)
FP16 (TFLOPS)
2.918 TFLOPS (2:1)
89.12 GFLOPS (1:64)
AI/RT
RT Cores
6
—
Power
TDP
40 W
75 W
TDP (W)
40
75
+87.5%
Suggested PSU
—
250 W
Power Connectors
None
None
Architecture
Architecture
RDNA 2.0
Pascal
GPU Name
Rembrandt
GP104
Generation
Navi II IGP
(Rembrandt Mobile)
Tesla Pascal
(Pxx)
Process Size
6 nm
16 nm
Transistors
13,100 million
7,200 million
Die Size
208 mm²
314 mm²
Foundry
TSMC
TSMC
Density
63.0M / mm²
22.9M / mm²
API Support
DirectX
12 Ultimate (12_2)
12 (12_1)
OpenGL
4.6
4.6
Vulkan
1.4
1.4
OpenCL
2.0
3.0
CUDA
—
6.1
Shader Model
6.8
6.8
Physical
Slot Width
IGP
Single-slot
Length
—
168 mm
6.6 inches
Outputs
Portable Device Dependent
No outputs
Bus Interface
PCIe 4.0 x8
PCIe 3.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
Vega II IGP
Tesla Maxwell
Successor
Navi III IGP
Tesla Volta