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GPU Comparison
NVIDIA GeForce GTX 850M vs NVIDIA GeForce GT 645M
NVIDIA GeForce GTX 850M vs NVIDIA GeForce GT 645M
VS
NVIDIA GeForce GTX 850M
NVIDIA GeForce GT 645M
We compared two Mobile platform GPUs: 2GB VRAM GeForce GTX 850M and 2GB VRAM GeForce GT 645M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 850M 's Advantages
Released 1 years and 5 months late
Larger VRAM bandwidth (32.03GB/s vs 28.80GB/s)
256 additional rendering cores
NVIDIA GeForce GT 645M 's Advantages
Lower TDP (32W vs 45W)
Score
Benchmark
FP32 (float)
GeForce GTX 850M
+112%
1.155 TFLOPS
GeForce GT 645M
0.544 TFLOPS
GeForce GTX 850M
VS
GeForce GT 645M
Graphics Card
Mar 2014
Release Date
Oct 2012
GeForce 800M
Generation
GeForce 600M
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1001 MHz
Memory Clock
900 MHz
Memory
2GB
Memory Size
2GB
DDR3
Memory Type
DDR3
128bit
Memory Bus
128bit
32.03GB/s
Bandwidth
28.80GB/s
Render Config
-
SM Count
-
-
Compute Units
-
640
Shading Units
384
40
TMUs
32
16
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
64 KB (per SMM)
L1 Cache
16 KB (per SMX)
2 MB
L2 Cache
256 KB
Theoretical Performance
14.43 GPixel/s
Pixel Rate
5.672 GPixel/s
36.08 GTexel/s
Texture Rate
22.69 GTexel/s
-
FP16 (half)
-
1155 GFLOPS
FP32 (float)
544.5 GFLOPS
36.08 GFLOPS
FP64 (double)
22.69 GFLOPS
Graphics Processor
GM107
GPU Name
GK107
N15P-GT-A1
GPU Variant
N13P-GS
Maxwell
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.87 billion
Transistors
1.27 billion
148 mm²
Die Size
118 mm²
Board Design
45W
TDP
32W
-
Suggested PSU
-
No outputs
Outputs
No outputs
-
Power Connectors
-
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.3
Vulkan
1.1
5.0
CUDA
3.0
5.1
Shader Model
5.1
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