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
H200 NVL
CORE STATE
GH100
VRAM
141 GB
CLOCK SPEED
1785 MHz
TDP
600 W
BUS WIDTH
6144 bit
ARCHITECTURE
Hopper
PROCESS
5 nm
LAUNCH DATE
2024
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
660M
H200 NVL
Core Specs
Shading Units
384
16,896
+4300.0%
Shaders
384
16,896
+4300.0%
TMUs
24
528
+2100.0%
ROPs
16
24
+50.0%
Compute Units
6
—
SM Count
—
132
Clocks
Base Clock
1500 MHz
1365 MHz
Boost Clock
1900 MHz
1785 MHz
Memory Clock
System Shared
1593 MHz
6.4 Gbps effective
Memory
Memory Size
System Shared
141 GB
VRAM (MB)
—
144,384
Memory Type
System Shared
HBM3e
Memory Bus
System Shared
6144 bit
Bandwidth
System Dependent
4.89 TB/s
Cache
L1 Cache
128 KB per Array
256 KB (per SM)
L2 Cache
2 MB
50 MB
L0 Cache
32 KB per WGP
—
Performance
Pixel Rate
30.40 GPixel/s
42.84 GPixel/s
Texture Rate
45.60 GTexel/s
942.5 GTexel/s
FP32 (TFLOPS)
1,459.2 GFLOPS
60.32 TFLOPS
FP64 (TFLOPS)
91.20 GFLOPS (1:16)
30.16 TFLOPS (1:2)
FP16 (TFLOPS)
2.918 TFLOPS (2:1)
241.3 TFLOPS (4:1)
AI/RT
RT Cores
6
—
Tensor Cores
—
528
Power
TDP
40 W
600 W
TDP (W)
40
600
+1400.0%
Suggested PSU
—
1000 W
Power Connectors
None
8-pin EPS
Architecture
Architecture
RDNA 2.0
Hopper
GPU Name
Rembrandt
GH100
Generation
Navi II IGP
(Rembrandt Mobile)
Server Hopper
(Hxx)
Process Size
6 nm
5 nm
Transistors
13,100 million
80,000 million
Die Size
208 mm²
814 mm²
Foundry
TSMC
TSMC
Density
63.0M / mm²
98.3M / mm²
API Support
DirectX
12 Ultimate (12_2)
—
OpenGL
4.6
—
Vulkan
1.4
—
OpenCL
2.0
3.0
CUDA
—
9.0
Shader Model
6.8
—
Physical
Slot Width
IGP
Dual-slot
Length
—
267 mm
10.5 inches
Height
—
111 mm
4.4 inches
Outputs
Portable Device Dependent
No outputs
Bus Interface
PCIe 4.0 x8
PCIe 5.0 x16
Other
Production
End-of-life
Active
Predecessor
Vega II IGP
Server Ada
Successor
Navi III IGP
Server Blackwell