NVIDIA GeForce RTX 2080 Ti 12 GB vs NVIDIA GeForce GT 640 OEM Rebrand
We compared two Desktop platform GPUs: 12GB VRAM GeForce RTX 2080 Ti 12 GB and 1536MB VRAM GeForce GT 640 OEM Rebrand to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce RTX 2080 Ti 12 GB 's Advantages
Boost Clock1635MHz
More VRAM (12GB vs 1536GB)
Larger VRAM bandwidth (768.0GB/s vs 38.40GB/s)
4464 additional rendering cores
NVIDIA GeForce GT 640 OEM Rebrand 's Advantages
Lower TDP (75W vs 250W)
Score
Benchmark
FP32 (float)
GeForce RTX 2080 Ti 12 GB
+3531%
15.07 TFLOPS
GeForce GT 640 OEM Rebrand
0.415 TFLOPS
Graphics Card
Unknown
Release Date
Apr 2012
GeForce 20
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1350 MHz
Base Clock
-
1635 MHz
Boost Clock
-
2000 MHz
Memory Clock
800 MHz
Memory
12GB
Memory Size
1536MB
GDDR6
Memory Type
DDR3
384bit
Memory Bus
192bit
768.0GB/s
Bandwidth
38.40GB/s
Render Config
-
-
-
72
SM Count
3
4608
Shading Units
144
288
TMUs
24
96
ROPs
24
576
Tensor Cores
-
72
RT Cores
-
64 KB (per SM)
L1 Cache
64 KB (per SM)
6 MB
L2 Cache
384 KB
-
-
-
Theoretical Performance
157.0 GPixel/s
Pixel Rate
4.320 GPixel/s
470.9 GTexel/s
Texture Rate
17.28 GTexel/s
30.14 TFLOPS
FP16 (half)
-
15.07 TFLOPS
FP32 (float)
414.7 GFLOPS
470.9 GFLOPS
FP64 (double)
34.56 GFLOPS
Board Design
250W
TDP
75W
600 W
Suggested PSU
250 W
1x HDMI 2.03x DisplayPort 1.4a1x USB Type-C
Outputs
2x DVI
1x mini-HDMI 1.3a
2x 8-pin
Power Connectors
None
Graphics Processor
TU102
GPU Name
GF116
TU102-350-A1
GPU Variant
GF116-150-A1
Turing
Architecture
Fermi 2.0
TSMC
Foundry
TSMC
12 nm
Process Size
40 nm
18.6 billion
Transistors
1.17 billion
754 mm²
Die Size
238 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
6.8
Shader Model
5.1
