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 M40
CORE STATE
GM200
VRAM
12 GB
CLOCK SPEED
1112 MHz
TDP
250 W
BUS WIDTH
384 bit
ARCHITECTURE
Maxwell 2.0
PROCESS
28 nm
LAUNCH DATE
2015
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
660M
Tesla M40
Core Specs
Shading Units
384
3,072
+700.0%
Shaders
384
3,072
+700.0%
TMUs
24
192
+700.0%
ROPs
16
96
+500.0%
Compute Units
6
—
Clocks
Base Clock
1500 MHz
948 MHz
Boost Clock
1900 MHz
1112 MHz
Memory Clock
System Shared
1502 MHz
6 Gbps effective
Memory
Memory Size
System Shared
12 GB
VRAM (MB)
—
12,288
Memory Type
System Shared
GDDR5
Memory Bus
System Shared
384 bit
Bandwidth
System Dependent
288.4 GB/s
Cache
L1 Cache
128 KB per Array
48 KB (per SMM)
L2 Cache
2 MB
3 MB
L0 Cache
32 KB per WGP
—
Performance
Pixel Rate
30.40 GPixel/s
106.8 GPixel/s
Texture Rate
45.60 GTexel/s
213.5 GTexel/s
FP32 (TFLOPS)
1,459.2 GFLOPS
6.832 TFLOPS
FP64 (TFLOPS)
91.20 GFLOPS (1:16)
213.5 GFLOPS (1:32)
FP16 (TFLOPS)
2.918 TFLOPS (2:1)
—
AI/RT
RT Cores
6
—
Power
TDP
40 W
250 W
TDP (W)
40
250
+525.0%
Suggested PSU
—
600 W
Power Connectors
None
8-pin EPS
Architecture
Architecture
RDNA 2.0
Maxwell 2.0
GPU Name
Rembrandt
GM200
Generation
Navi II IGP
(Rembrandt Mobile)
Tesla Maxwell
(Mxx)
Process Size
6 nm
28 nm
Transistors
13,100 million
8,000 million
Die Size
208 mm²
601 mm²
Foundry
TSMC
TSMC
Density
63.0M / mm²
13.3M / 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
—
5.2
Shader Model
6.8
6.8
Physical
Slot Width
IGP
Dual-slot
Length
—
267 mm
10.5 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 Kepler
Successor
Navi III IGP
Tesla Pascal