GeForce GT 645M and GeForce RTX 3090 - video card comparison
Passmark - benchmark score GeForce GT 645M vs GeForce RTX 3090
GeForce GT 645M
957
GeForce RTX 3090
27597
GeForce GT 645M
GeForce RTX 3090
Architecture
Kepler (2012−2018)
Ampere (2020−2022)
GPU code name
N13P-GS
Ampere GA102
Market segment
Laptop
Desktop
Release date
March 2012
September 2020
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 4.0 x16
Supplementary power connectors
-
1x 12-pin
Boost clock speed
-
1700 MHz
Core clock speed
Up to 710 MHz
1400 MHz
CUDA cores
384
-
Floating-point performance
544.5 gflops
-
Manufacturing process technology
28 nm
8 nm
Number of transistors
1,270 million
28,300 million
Pipelines / CUDA cores
384
10496
Power consumption (TDP)
32 Watt
350 Watt
Texture fill rate
22.7 billion/sec
556.0
Memory type
DDR3\GDDR5
GDDR6X
Maximum RAM amount
2 GB
24 GB
Memory bus width
128bit
384 Bit
Memory clock speed
1800 MHz
19500 MHz
Memory bandwidth
Up to 64.0 GB/s
936.2 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x HDMI, 3x DisplayPort
HDMI
+
+
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
12 Ultimate (12_2)
CUDA
+
8.5
OpenCL
1.1
2.0
OpenGL
4.5
4.6
Shader Model
5.1
6.5
Vulkan
1.1.126
1.2
3D Blu-Ray
+
-
Optimus
+
-