GeForce RTX 2080 SUPER vs GeForce GT 645 OEM
We compared two Desktop platform GPUs: 8GB VRAM GeForce RTX 2080 SUPER and 1024MB VRAM GeForce GT 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce RTX 2080 SUPER 's Advantages
Released 7 years and 3 months late
Boost Clock1815MHz
More VRAM (8GB vs 1024GB)
Larger VRAM bandwidth (495.9GB/s vs 91.87GB/s)
2784 additional rendering cores
GeForce GT 645 OEM 's Advantages
Lower TDP (102W vs 250W)
Score
Benchmark
FP32 (float)
GeForce RTX 2080 SUPER
+1147%
11150
GeForce GT 645 OEM
894
Graphics Card
Jul 2019
Release Date
Apr 2012
GeForce 20
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1650 MHz
Base Clock
-
1815 MHz
Boost Clock
-
1937 MHz
Memory Clock
957 MHz
Memory
8GB
Memory Size
1024MB
GDDR6
Memory Type
GDDR5
256bit
Memory Bus
192bit
495.9GB/s
Bandwidth
91.87GB/s
Render Config
48
SM Count
6
3072
Shading Units
288
192
TMUs
48
64
ROPs
24
384
Tensor Cores
-
48
RT Cores
-
64 KB (per SM)
L1 Cache
64 KB (per SM)
4 MB
L2 Cache
384 KB
Theoretical Performance
116.2 GPixel/s
Pixel Rate
9.312 GPixel/s
348.5 GTexel/s
Texture Rate
37.25 GTexel/s
22.30 TFLOPS
FP16 (half)
-
11.15 TFLOPS
FP32 (float)
894.0 GFLOPS
348.5 GFLOPS
FP64 (double)
74.50 GFLOPS
Board Design
250W
TDP
102W
600 W
Suggested PSU
300 W
1x HDMI 2.0
3x DisplayPort 1.4a
1x USB Type-C
Outputs
2x DVI
1x mini-HDMI 1.3a
1x 6-pin + 1x 8-pin
Power Connectors
-
Graphics Processor
TU104
GPU Name
GF114
TU104-450-A1
GPU Variant
-
Turing
Architecture
Fermi 2.0
TSMC
Foundry
TSMC
12 nm
Process Size
40 nm
13.6 billion
Transistors
1.95 billion
545 mm²
Die Size
332 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
1.1
1.3
Vulkan
N/A
7.5
CUDA
2.1
6.6
Shader Model
5.1
